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CN113583395A - Fiber-plastic composite material prepared from mixed waste textiles and preparation method and application thereof - Google Patents

Fiber-plastic composite material prepared from mixed waste textiles and preparation method and application thereof Download PDF

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Publication number
CN113583395A
CN113583395A CN202110743816.3A CN202110743816A CN113583395A CN 113583395 A CN113583395 A CN 113583395A CN 202110743816 A CN202110743816 A CN 202110743816A CN 113583395 A CN113583395 A CN 113583395A
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temperature
parts
fiber
composite material
heating section
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张慧杰
毛亚鹏
钱建华
陈少强
刘世强
陈玲
黄东伟
史善信
刘坐镇
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Huachang Polymer Co Ltd East China University Of Science & Technology
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Huachang Polymer Co Ltd East China University Of Science & Technology
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/047Reinforcing macromolecular compounds with loose or coherent fibrous material with mixed fibrous material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06Fibrous reinforcements only
    • B29C70/10Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/22Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure
    • B29C70/224Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure the structure being a net
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/045Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/046Reinforcing macromolecular compounds with loose or coherent fibrous material with synthetic macromolecular fibrous material
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2401/00Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2401/02Cellulose; Modified cellulose
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04Homopolymers or copolymers of ethene
    • C08J2423/06Polyethene
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J2423/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/10Homopolymers or copolymers of propene
    • C08J2423/12Polypropene
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/26Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
    • C08J2423/28Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
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    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2467/00Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/02Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2477/00Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers

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  • Medicinal Chemistry (AREA)
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  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Composite Materials (AREA)
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Abstract

The invention provides a fiber-plastic composite material prepared by mixing waste textiles, a preparation method and application thereof, and relates to the technical field of recycling of waste textiles, wherein the fiber-plastic composite material is prepared by sequentially crushing, extruding and granulating by a low-temperature solid phase method and extruding and molding by a cold-top method; the processing temperature of the low-temperature solid phase method extrusion and the cold top method extrusion is not more than 230 ℃. The preparation method provided by the invention is simple and convenient, has no pollution and short preparation period, and the prepared fiber-plastic composite material has high strength, excellent physical and chemical properties, is easy to process and wide in application range, and can be applied to building materials, engineering materials, furniture, artware and other industrial products.

Description

Fiber-plastic composite material prepared from mixed waste textiles and preparation method and application thereof
Technical Field
The invention relates to the technical field of recycling of waste textiles, in particular to a fiber-plastic composite material prepared by mixing waste textiles and a preparation method and application thereof.
Background
The fiber product has wide application in human production and life, can be seen in various aspects of clothes and eating habits in the fields of clothes, home furnishings, carpets, industrial felt cloth, automobiles and the like, and can bring great convenience to human life. On the one hand, however, the fiber product is cut into a specific shape when being applied, so that a large number of corners are generated; on the other hand, the fiber products have short service cycle and generate a large amount of waste after consumption.
However, at present, the waste blended textiles are difficult to be effectively recycled. Waste textiles often contain cotton, hemp and other mixed fibers, the textiles of the waste textiles which take single terylene or cotton as components are few, and most of the textiles are blended and mixed terylene-cotton textiles which take terylene as a main component and cotton as an auxiliary component. Compared with the single raw material component waste cotton and polyester textiles, the mixed waste textiles not only have complex components, but also have more complex internal structures, such as sea-island structures, core-spun structures, orange lobe structures and the like, so that the waste textiles are difficult to separate into single components by a physical method and difficult to separate when being recycled, and cannot be utilized by other regeneration technologies such as a physical method or a chemical method, but can only be treated in the most original and low-level mode of landfill or incineration.
In the prior art, in order to realize the recovery of waste blended textiles, polyester fibers which are difficult to treat are degraded or separated by a chemical method, and then different degraded or separated fibers are treated. However, the method is time-consuming and labor-consuming, and needs to use a large amount of chemical drugs for treatment, generates harmful substances such as waste fiber mud, waste liquid and the like, has serious environmental pollution and high treatment cost, and has small application market of regenerated products. The other recycling mode of the waste blended textiles is to treat the waste blended textiles by a mechanical method or a thermal energy method and the like on the basis of not separating the blended textiles, but has the problems of poor quality of prepared products, narrow application range, low recovery rate and the like. For example, Chinese patent CN109401062A selects waste textiles as main raw materials, and the waste textiles are decolored, dried and crushed to obtain fiber powder, and then the fiber powder is blended with polypropylene resin, and the mixture is melted and extruded by a double-screw extruder for granulation. However, in the recovery method, sodium hypochlorite aqueous solution is adopted for fiber decolorization, so that waste liquid is generated, and environmental pollution is caused; the particle size of the fiber powder is 0.5-1mm, and the addition amount is only 25-32 parts, so the waste textile fibers treated by the method can only play a role of a filler in the system, a complete reinforcing network cannot be formed, and the fibers have no effective reinforcing effect on the finally prepared composite material. In addition, in the process of melting and granulating by a double-screw extruder, if the selected waste textile fibers contain natural fibers such as cotton and linen, the temperature rise of the mixture caused by screw shearing and material friction can cause carbonization and degradation of the cotton and linen fibers, so that the material is foamed; however, if a screw with a weak shearing action is used to avoid carbonization of the fibers, the screw shearing action is small, which results in significant phase separation between the fibers and the matrix and poor reinforcing effect. Therefore, the method for recycling the waste textiles can cause secondary pollution to the environment on one hand, has higher requirements on fiber components on the other hand, and has small particle size of fiber powder, low addition amount, poor quality of regenerated finished products and narrow application range.
Disclosure of Invention
The invention provides a fiber-plastic composite material prepared by mixing waste textiles and a preparation method and application thereof, aiming at overcoming the problems of complex pretreatment and easy secondary environmental pollution in the recycling of the waste blended textiles in the prior art, and poor fiber reinforcement effect and low mechanical property of the prepared regenerated material.
In order to achieve the above object, the present invention provides the following technical solutions:
the present invention provides a first aspect comprising:
a fiber-plastic composite material is prepared by sequentially crushing raw materials for preparing mixed waste textiles and thermoplastic resin, performing low-temperature solid-phase extrusion granulation, and performing cold-top extrusion molding;
the processing temperature of the low-temperature solid phase method extrusion and the cold top method extrusion is not more than 230 ℃.
Preferably, the preparation raw materials comprise the following substances in parts by mass: 40-80 parts of mixed waste textiles, 10-40 parts of thermoplastic resin, 0.1-24 parts of auxiliary materials and 5-30 parts of fillers.
Preferably, the mixed waste textile is selected from one or more of terylene and polyethylene compound, terylene and polypropylene compound, terylene and cotton compound, terylene and hemp compound and terylene and nylon compound.
Preferably, the thermoplastic resin is a waste thermoplastic resin.
Further preferably, the thermoplastic resin is selected from one or more of polyethylene, polypropylene, copolymerized PET, and chlorinated polyethylene.
Preferably, the auxiliary materials comprise one or more of a light stabilizer, a lubricant and an antioxidant.
Preferably, the preparation raw materials comprise the following auxiliary materials in parts by mass: 0.1-1 part of light stabilizer, 0.5-5 parts of lubricant and 0.5-3 parts of antioxidant.
Further preferably, the light stabilizer is a hindered amine light stabilizer.
Further preferably, the lubricant is selected from one or more of a stearic acid-based lubricant, a polyethylene wax-based lubricant, and a silicone-based lubricant.
More preferably, the antioxidant is one or more of antioxidant 1010, antioxidant 330 and antioxidant AO-80.
Further preferably, the filler is selected from one or more of talcum powder, calcium powder, wood powder and bamboo powder.
The second aspect provided by the present invention includes:
the preparation method of the fiber-plastic composite material in the technical scheme comprises the following steps:
(1) crushing the mixed waste textiles to below 50mm, and mixing with other crushed preparation raw materials to obtain a mixed material;
(2) extruding the mixed material by a low-temperature solid phase method for granulation to obtain a primary treatment material;
(3) extruding by a cold top method, and sequentially processing and molding the primary processing materials according to the following heating temperature to obtain a fiber-plastic composite material;
the treatment temperature of the low-temperature solid phase method and the cold top method is not more than 230 ℃.
Preferably, the processing procedure of the low-temperature solid-phase extrusion in step (2) comprises:
the temperature of the first heating section is 100-120 ℃, the temperature of the second heating section is 130-180 ℃, the temperature of the third heating section is 160-210 ℃, the temperature of the fourth heating section is 160-230 ℃, the temperature of the fifth heating section is 160-230 ℃, the temperature of the sixth heating section is 140-210 ℃, and the temperature of the seventh heating section is 140-210 ℃.
Further preferably, in the fourth heating stage of the low-temperature solid-phase method in the step (2), the heating is performed while exhausting is performed.
Preferably, the processing procedure of the cold-top extrusion in the step (3) comprises the following steps:
the temperature of the first heating section is 60-100 ℃, the temperature of the second heating section is 120-.
Further preferably, the steps (2) and (3) are performed by using a single-screw extruder.
Further preferably, the preparation raw materials are respectively dried to a water content of less than 0.3 wt% before the mixing in step (1).
The present invention provides a third aspect comprising:
the fiber-plastic composite material according to the first aspect or the fiber-plastic composite material prepared by the method according to the second aspect is applied to building materials, engineering materials, furniture, artware and other industrial products.
Compared with the prior art, the invention has the beneficial effects that:
1. the fiber-plastic composite material provided by the invention is prepared by taking mixed waste textiles and thermoplastic resin as main raw materials, in the process, the mixed waste textile fibers taking terylene as a main component and the thermoplastic resin form a fiber reinforced network in the preparation process, and the strength is improved by more than 30% compared with that of the thermoplastic resin used as a matrix, and the fiber-plastic composite material at least has the following characteristics:
(1) the strength is high, and the pressure resistance and the deformation resistance are realized;
(2) no damage of worm or fungus, acid and alkali resistance and corrosion resistance;
(3) the processing performance is good, and the tool can be processed by tools such as saws, nails and planes;
(4) no toxicity, no pollution and no radiation;
(5) the product has good toughness and elasticity, and has no visible cracks, broken lines and damages when horizontally dropped;
(6) good weather resistance, low dimensional change rate of expansion with heat and contraction with cold, and difficult deformation.
2. The preparation method of the fiber-plastic composite material is simple and pollution-free: the fiber and the plastic in the raw materials form a fiber reinforced network by two times of extrusion through a low-temperature solid phase method and a cold top method, and the recovery treatment of the mixed waste textile products can be realized. The problems of complex treatment and low product quality of mixed waste textiles with different fiber strength, complex substances and complex structures are effectively solved.
The specific principle of the formation of the fiber reinforced network is as follows: the fiber and resin structure obtained by mixing the mixed waste textiles in the preparation raw materials with the hot-melt resin is shown in figure 1, and the structures of the fiber and the resin are distinct. The warp-weft interweaving structure of the waste textile is opened through direct friction of the thermoplastic resin, the charging barrel and the textile in the low-temperature solid-phase extrusion process, the fibers are coated by the thermoplastic resin while being dissociated into yarns, the interface acting force between the fibers and the fibers after the fibers are coated by the thermoplastic resin is enhanced, the fibers are dispersed along the flowing direction of a molten matrix, the fibers initially form orientation in the fiber reinforced structure, and the fiber and thermoplastic resin structure in the material subjected to primary treatment and shown in figure 2 are initially fused and the fibers initially form orientation. Because the temperature in the whole processing process is lower and the mixture has poor fluidity, the fiber of the mixture which forms the preliminary fiber reinforced network in the low-temperature solid-phase method extrusion process conforms to the flow direction of the thermoplastic resin to gradually form a highly oriented structure in the cold-top method extrusion process, and the fiber-plastic composite material with the highly oriented fiber reinforced network shown in figure 3 is obtained, so that the performance of the fiber-plastic composite material is greatly improved.
3. The preparation method disclosed by the invention does not need to separate mixed waste textiles and use chemical reagents, simplifies the preparation process, shortens the preparation period, reduces the regeneration cost of the mixed waste textiles, and is cleaner and more environment-friendly.
4. The preparation method of the invention controls the temperature of the processes of low-temperature solid-phase extrusion and cold-top extrusion, so that the polyester fiber easy to plasticize and the cotton-flax fiber easy to carbonize are uniformly dispersed in the matrix, and the fiber reinforced structure is formed through ordered arrangement, and meanwhile, the carbonization and degradation rate of the fibers such as cotton-flax and the like is effectively reduced through the protection action of the thermoplastic resin matrix coating and the low-temperature protection action in the extrusion process, and the obtained fiber-plastic composite material has no obvious bubbles on the surface and inside and provides guarantee for the strength of the fiber-plastic composite material.
5. The fiber-plastic composite material provided by the invention has excellent physical and chemical properties, can be applied to building materials, engineering materials, furniture, artware and other industrial products, has lower cost compared with steel products, wood-plastic materials and the like, and has wider application prospect compared with a regenerated material obtained by a traditional treatment method.
Drawings
FIG. 1 is a photograph of the structure of fibers and resin when untreated after mixing the preparation raw materials according to the present invention;
FIG. 2 is a photograph showing the structure of fibers and resins in a material extruded by a low-temperature solid-phase method from the raw materials for preparation according to the present invention;
FIG. 3 is a photograph of the fiber and resin structure of the fiber-plastic composite material after the raw materials are extruded by the low-temperature solid phase method and the cold-top method;
FIG. 4 is an embossed floor made of the fiber-plastic composite material of the present invention;
FIG. 5 is a co-extruded embossed floor made of the fiber-plastic composite material of the present invention;
FIG. 6 is a workshop partition made of the fiber-plastic composite material according to the present invention;
FIG. 7 is a tray made of fiber-plastic composite material according to the present invention;
FIG. 8 is a toilet made of fiber-plastic composite material according to the present invention;
FIG. 9 is a table and chair made of fiber-plastic composite material according to the present invention;
FIG. 10 is a view of a refuse sorting kiosk made of fiber-plastic composite material according to the present invention;
FIG. 11 is a hollow pipe made of the fiber-plastic composite material of the present invention.
Detailed Description
The invention provides a fiber-plastic composite material, which is prepared by sequentially crushing raw materials for preparing mixed waste textiles and thermoplastic resin, performing low-temperature solid-phase extrusion granulation and performing cold-top extrusion molding; the processing temperature of the low-temperature solid phase method extrusion and the cold-top method extrusion is not more than 230 ℃.
Preferably, the preparation raw materials comprise the following substances in parts by mass: 40-80 parts of mixed waste textiles, 10-40 parts of thermoplastic resin, 0.1-24 parts of auxiliary materials and 5-15 parts of fillers.
The mixed waste textile can be prepared from 40 parts, 50 parts, 60 parts, 70 parts, 80 parts and the like in parts by mass. The mixed waste textile comprises leftover materials of clothing factories, recycled clothes, part of industrial garbage, recycled textile materials and other multiple sources, and mainly becomes a terylene compound, including one or more of terylene and polyethylene compounds, terylene and polypropylene compounds, terylene and cotton compounds, terylene and hemp compounds and terylene and nylon compounds. In the invention, the mixed waste textile can be used as the raw material for preparation of the invention only by removing the metal in the mixed waste textile and without precise separation. In the actual production process, the mixed waste textile waste after harmless treatment can be directly selected as a raw material. The addition amount of the mixed waste textile accounts for 40-80% of the total mass of the raw materials, and is the basis of forming an effective fiber reinforced network by the method.
The mass parts of the thermoplastic resin in the invention in the preparation raw materials can be 10 parts, 15 parts, 20 parts, 25 parts and the like. In the invention, the thermoplastic resin is preferably waste thermoplastic resin, so that the preparation cost of the fiber-plastic composite material is further reduced. The thermoplastic resin may be one or more of Polyethylene (PE), polypropylene (PP), copolymerized pet (petg), and Chlorinated Polyethylene (CPE).
In the present invention, the auxiliary material preferably includes one or more of a light stabilizer, a lubricant and an antioxidant. Further preferably, the preparation raw materials comprise the following auxiliary materials in parts by mass: 0.1-1 part of light stabilizer, 0.5-5 parts of lubricant and 0.5-3 parts of antioxidant. In the present invention, the mass parts of the light stabilizer in the raw materials for preparation may be 0.1 part, 0.3 part, 0.5 part, 0.8 part, 1.0 part, etc.; the light stabilizer is preferably a hindered amine light stabilizer which may be a light stabilizer 944 (poly { [6- [ (1,1,3, 3-tetramethylbutyl) amino ] ] -1,3, 5-triazi-2, 4- [ (2,2,6, 6-tetramethyl-piperidinyl) imino ] -1, 6-hexanediylene [ (2,2,6, 6-tetramethyl-4-piperidinyl) imino ] }), a light stabilizer 119(N, N-1, 2-ethanediylbis [ N- [3- [ [4, 6-bis [ butyl (1,2,2,6, 6-pentamethyl-4-piperidinyl) amino ] -1,3, 5-triazine-Chemi ca l book 2-yl ] amino ] propyl ] -N, N-dibutyl-N, N-bis (1,2,2,6, 6-pentamethyl-4-piperidinyl) -1,3, 5-triazine-2, 4, 6-triamine), light stabilizer 622 (poly (4-hydroxy-2, 2,6, 6-tetramethyl-1-piperidineethanol) succinate). The light stabilizer is added to prolong the service life of the material under the sunlight, and the histamine light stabilizer can inhibit the chain reaction of degradation and aging of the thermoplastic resin by capturing peroxidized free radicals caused by photoelectrons, so that the service life of the prepared material under the sunlight is greatly prolonged. In the invention, the antioxidant can be 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts and the like in parts by mass in the preparation raw materials; the antioxidant is preferably selected from one or more of antioxidant 1010 (pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) ], antioxidant 330(1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene) and antioxidant AO-80(3, 9-bis [1, 1-dimethyl-2- [ (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy ] ethyl ] -2,4,8, 10-tetraoxaspiro [5.5] undecane). The addition of an antioxidant can also prolong the service life of the prepared material. In the present invention, the mass parts of the lubricant in the preparation raw materials may be 0.5 parts, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, etc.; the lubricant is preferably selected from one or more of a stearic acid-based lubricant, a polyethylene wax-based lubricant, and a silicone-based lubricant. The lubricant is added to improve the fluidity of the mixture, thereby improving the processability of the mixture.
In the present invention, the mass parts of the filler in the preparation raw materials may be 5 parts, 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, etc.; the filler is preferably selected from one or more of talc powder, calcium powder, wood powder and bamboo powder. Calcium powder and stone powder are used as fillers, so that the strength and modulus of the prepared section can be improved; the wood powder and the bamboo powder are used as the filler, so that on one hand, the flow property of the material can be adjusted, on the other hand, the ultrafine wood powder or the bamboo powder can be added, and a small amount of cotton and hemp fibers in the mixed waste textile can be protected through partial carbonization of the wood powder or the bamboo powder, so that the local defect caused by fiber carbonization is avoided. It should be noted that in the preferred embodiment in which wood powder and/or bamboo powder is added as a filler, the wood powder and bamboo powder are used to improve the flowability of the material and do not participate in the establishment of the fiber-reinforced structure.
The invention also provides a preparation method of the fiber-plastic composite material, which comprises the following steps:
(1) crushing the mixed waste textiles to below 50mm, and mixing with other crushed preparation raw materials to obtain a mixed material;
(2) extruding the mixed material by a low-temperature solid phase method for granulation to obtain a primary treatment material;
(3) extruding by a cold top method, and sequentially processing and molding the primary processing materials according to the following heating temperature to obtain a fiber-plastic composite material;
the treatment temperature of the low-temperature solid phase method and the cold top method is not more than 230 ℃.
Specifically, the method comprises the steps of crushing the mixed waste textiles in the preparation raw materials to be less than 50mm for subsequent treatment; the pulverization is preferably 10-50mm, and may be 10mm, 30mm, 40mm, 50mm, etc. The method can treat the mixed waste textiles with a plurality of mixed crushed grain sizes, for example, the mixture of the mixed waste textiles with the crushed grain sizes of 10mm, 30mm and 50mm is adopted as a raw material in the embodiment of the invention. After obtaining the crushed mixed waste textiles, it is preferred in the present invention that the crushed mixed waste textiles and other preparation raw materials are dried separately before mixing until the water content is less than 0.3 wt%. When the thermoplastic resin is a waste thermoplastic resin, the volume reduction treatment may be performed on the waste thermoplastic resin in advance. In the present invention, the thermoplastic resin is used as a raw material, and the particle diameter after pulverization is preferably 20mm or less. Further preferably, the drying temperature of the mixed waste textile is preferably 65-75 ℃, and more preferably 70 ℃; the drying temperature of the raw materials for preparation other than the mixed waste textiles is preferably 80-95 ℃, and more preferably 90 ℃. In the invention, when the preparation raw materials are mixed, the mixed preparation raw materials are preferably stirred for 0.5-1.5h, and the stirring speed is preferably 20-50r/min, so that the mixed materials are primarily dispersed; in one embodiment of the invention, the stirring time is 1h and the stirring speed is 30 r/min. The above preferred schemes and their combination are all the pretreatment processes of the method of the invention, the treatment is simple, no chemical agent is needed for pretreatment, and no pollution is caused to the environment.
The invention gradually disperses the preparation raw materials in the process of granulating the mixed materials by low-temperature solid-phase extrusion, opens a warp-weft interweaving structure of the waste textiles through the direct friction of the matrix, the charging barrel and the textiles, dissociates the waste textiles into yarns and is coated by the matrix, and enhances the interface acting force between the fibers coated by the matrix and the matrix, thereby forming an effective fiber reinforced structure.
Preferably, in the step (2), the fourth heating section is heated and simultaneously exhausted; preferably, the exhaust is realized by arranging an exhaust port in the fourth heating section. The heating and exhausting in the fourth heating section are carried out to remove moisture in the materials and small molecular compounds generated in the preparation process.
The invention uses cold-top extrusion to process the primary processing material, and extrudes the reinforced particles in the primary processing material, and the reinforced particles are molded into fiber-plastic composite materials with different shapes through a mold. The temperature of the whole forming process is low, the fluidity of the mixture is poor, but the fabric is dissociated into yarns in the low-temperature solid-phase extrusion process and forms an organic whole with the matrix, so that the fibers flow along the matrix in the cold-top extrusion process, the flow channel is gradually narrowed in the process of passing through the screw, the confluence core and the mold flow channel, the fibers form a highly oriented structure along the flow direction of the matrix, and then the material is primarily cooled and shaped to form the fiber reinforced composite material with high orientation degree.
In the invention, the processing temperature of the low-temperature solid phase method extrusion and the cold-top method extrusion is not more than 230 ℃ so as to control the temperature of the whole processing process to be lower than the melting point (255-265 ℃) of the polyester fiber, thereby effectively maintaining the fiber shape and ensuring the formation of a fiber reinforced network. The preparation raw materials are continuously heated for more than 30s at the treatment temperature of more than 230 ℃, so that the cotton and hemp fibers and the like are melted, the carbonization rate and the degradation rate of the cotton and hemp fibers can be effectively reduced at the treatment temperature of the invention, the generation of bubbles is reduced, and the strength and the appearance of the fiber-plastic composite material are not influenced.
In the preparation process, the invention preferably selects the processing temperature of the low-temperature solid phase method extrusion within the range of 100-230 ℃; more preferably: the temperature of the first heating section is 100-120 ℃, the temperature of the second heating section is 130-160 ℃, the temperature of the third heating section is 160-210 ℃, the temperature of the fourth heating section is 160-230 ℃, the temperature of the fifth heating section is 160-230 ℃, the temperature of the sixth heating section is 140-210 ℃, and the temperature of the seventh heating section is 140-210 ℃. In some embodiments of the invention, the processing temperature for low temperature solid phase extrusion may be: the temperature of the first heating section is 100 ℃, the temperature of the second heating section is 160-180 ℃, the temperature of the third heating section is 200-210 ℃, the temperature of the fourth heating section is 220-230 ℃, the temperature of the fifth heating section is 220-230 ℃, the temperature of the sixth heating section is 190-210 ℃, and the temperature of the seventh heating section is 190-210 ℃.
Preferably, the processing temperature of the cold-top extrusion is 60-200 ℃; more preferably: the temperature of the first heating section is 60-100 ℃, the temperature of the second heating section is 120-. In some embodiments of the invention, the processing temperature of the cold-melt extrusion may be: the temperature of the first heating section is 80-100 ℃, the temperature of the second heating section is 120-.
The preparation method preferably adopts the single screw extruder to perform low-temperature solid phase method extrusion and cold-top method extrusion, because the shearing force of the single screw is not strong, and the degradation rate of the cotton and linen fibers can be reduced only by mixing materials through material thin channels caused by material friction and changes of screw pitch and screw diameter. The low temperature solid phase extrusion is chosen to reduce degradation of some of the components in the hybrid fiber by temperature control.
The invention also provides the application of the fiber-plastic composite material in the technical scheme or the fiber-plastic composite material prepared by the method in the technical scheme in building materials, engineering materials, furniture, artware and other industrial products. The building material includes a structural material and a decorative material. Specifically, the fiber-plastic composite material can be used as an embossed floor, a stand column, a keel, a hanging plate, an outdoor floor, a guardrail, a light-weight tray and the like, can be combined with a steel bar and the like to be used as a partition, a built classification pavilion, a simple house and the like, and can be used as a substitute of a wood-plastic material. Part of the application of the fiber-plastic composite material of the invention is shown in figure 4-.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
(1) Selecting the following raw materials in percentage by weight: 40 parts of mixed waste textiles, 25 parts of PE (polyethylene), 9440.3 parts of light stabilizer, 5 parts of montan wax, 3301 parts of antioxidant, 15 parts of wood powder and 15 parts of calcium carbonate.
(2) Crushing the mixed waste textiles in the preparation raw materials to 10mm to obtain crushed mixed waste textiles, and drying at 70 ℃ for 4h to obtain dried mixed waste textiles; respectively pulverizing other raw materials, pulverizing, and drying at 90 deg.C for 1 hr to obtain respectively pulverized and dried other raw materials. So that the water content of all the preparation raw materials is less than 0.3 wt%.
(3) Mixing all the dried preparation raw materials, placing the mixture into a stirring barrel, stirring the mixture for 1 hour at the speed of 30r/min, and performing primary dispersion to obtain a mixed material.
(4) Sending the mixed material into a single-screw extruder, and carrying out low-temperature solid-phase method extrusion granulation on the mixed material according to the following heating temperatures in sequence to obtain a primary treatment material:
the temperature of the first heating section is 100 ℃, the temperature of the second heating section is 160 ℃, the temperature of the third heating section is 200 ℃, the temperature of the fourth heating section is 240 ℃, the temperature of the fifth heating section is 240 ℃, the temperature of the sixth heating section is 200 ℃, and the temperature of the seventh heating section is 200 ℃.
(5) And extruding by a cold-top method, and sequentially processing and molding the once-processed materials according to the following heating temperatures to obtain the fiber-plastic composite material:
the temperature of the first heating section is 80 ℃, the temperature of the second heating section is 120 ℃, the heating temperature of the third heating section is 180 ℃, the temperature of the fourth heating section is 180 ℃, the temperature of the confluence core is 150 ℃, and the temperature of the die is 140 ℃.
Example 2
The procedure is the same as in example 1 except that in step (2) the mixed waste textile is crushed to 30 mm.
Example 3
The procedure is the same as in example 1 except that in step (2) the mixed waste textile is crushed to 50 mm.
Example 4
(1) Selecting the following raw materials in percentage by weight: 50 parts of mixed waste textiles, 20 parts of PE (polyethylene), 9440.3 parts of light stabilizer, 5 parts of montan wax, 3301 parts of antioxidant, 10 parts of bamboo powder and 15 parts of talcum powder.
(2) Crushing 30 parts of mixed waste textiles in the preparation raw materials to 10mm, 10 parts of mixed waste textiles to 30mm and 10 parts of mixed waste textiles to 50mm to obtain crushed mixed waste textiles, and drying at 70 ℃ for 4 hours to obtain dried mixed waste textiles; respectively pulverizing other raw materials, and drying at 90 deg.C for 1 hr to obtain respectively pulverized and dried other raw materials. So that the water content of all the preparation raw materials is less than 0.3 wt%.
(3) Mixing all the dried preparation raw materials, placing the mixture into a stirring barrel, stirring the mixture for 1 hour at the speed of 30r/min, and performing primary dispersion to obtain a mixed material.
(4) Sending the mixed material into a single-screw extruder, and carrying out low-temperature solid-phase method extrusion granulation on the mixed material according to the following heating temperatures in sequence to obtain a primary treatment material:
the temperature of the first heating section is 100 ℃, the temperature of the second heating section is 180 ℃, the temperature of the third heating section is 210 ℃, the temperature of the fourth heating section is 230 ℃, the temperature of the fifth heating section is 230 ℃, the temperature of the sixth heating section is 210 ℃, and the temperature of the seventh heating section is 200 ℃.
(3) The single screw extruder is used for extruding by a cold top method according to the following heating temperature to process and form the once-processed materials in sequence to obtain the fiber-plastic composite material
The temperature of the first heating section is 80 ℃, the temperature of the second heating section is 120 ℃, the heating temperature of the third heating section is 200 ℃, the temperature of the fourth heating section is 200 ℃, the temperature of the confluence core is 170 ℃, and the temperature of the die is 140 ℃.
Example 5
(1) Selecting the following raw materials in percentage by weight: 50 parts of mixed waste textile, 20 parts of PETG, 1190.3 parts of light stabilizer, 5 parts of calcium stearate, 10101 parts of antioxidant, 10 parts of wood powder and 15 parts of calcium carbonate.
(2) Crushing 30 parts of mixed waste textiles in the preparation raw materials to 10mm, 10 parts of mixed waste textiles to 30mm and 10 parts of mixed waste textiles to 50mm to obtain crushed mixed waste textiles, and drying at 70 ℃ for 4 hours to obtain dried mixed waste textiles; respectively pulverizing other raw materials, and drying at 90 deg.C for 1 hr to obtain respectively pulverized and dried other raw materials. So that the water content of all the preparation raw materials is less than 0.3 wt%.
(3) Mixing all the dried preparation raw materials, placing the mixture into a stirring barrel, stirring the mixture for 1 hour at the speed of 30r/min, and performing primary dispersion to obtain a mixed material.
(4) Sending the mixed material into a single-screw extruder, and carrying out low-temperature solid-phase method extrusion granulation on the mixed material according to the following heating temperatures in sequence to obtain a primary treatment material:
the temperature of the first heating section is 100 ℃, the temperature of the second heating section is 160 ℃, the temperature of the third heating section is 200 ℃, the temperature of the fourth heating section is 220 ℃, the temperature of the fifth heating section is 220 ℃, the temperature of the sixth heating section is 190 ℃, and the temperature of the seventh heating section is 190 ℃.
(3) The single screw extruder is used for extruding by a cold top method according to the following heating temperature to process and form the once-processed materials in sequence to obtain the fiber-plastic composite material
The temperature of the first heating section is 100 ℃, the temperature of the second heating section is 140 ℃, the temperature of the third heating section is 200 ℃, the temperature of the fourth heating section is 200 ℃, the temperature of the confluence core is 180 ℃, and the temperature of the die is 160 ℃.
Example 6
(1) Selecting the following raw materials in percentage by weight: 50 parts of mixed waste textiles, 20 parts of CPE, 1190.3 parts of light stabilizer, 5 parts of zinc stearate, AO-801 parts of antioxidant, 10 parts of bamboo powder and 15 parts of calcium carbonate.
(2) Crushing 30 parts of mixed waste textiles in the preparation raw materials to 10mm, 10 parts of mixed waste textiles to 30mm and 10 parts of mixed waste textiles to 50mm to obtain crushed mixed waste textiles, and drying at 70 ℃ for 4 hours to obtain dried mixed waste textiles; respectively pulverizing other raw materials, and drying at 90 deg.C for 1 hr to obtain respectively pulverized and dried other raw materials. So that the water content of all the preparation raw materials is less than 0.3 wt%.
(3) Mixing all the dried preparation raw materials, placing the mixture into a stirring barrel, stirring the mixture for 1 hour at the speed of 30r/min, and performing primary dispersion to obtain a mixed material.
(4) Sending the mixed material into a single-screw extruder, and carrying out low-temperature solid-phase method extrusion granulation on the mixed material according to the following heating temperatures in sequence to obtain a primary treatment material:
the temperature of the first heating section is 100 ℃, the temperature of the second heating section is 130 ℃, the temperature of the third heating section is 160 ℃, the temperature of the fourth heating section is 160 ℃, the temperature of the fifth heating section is 160 ℃, the temperature of the sixth heating section is 140 ℃ and the temperature of the seventh heating section is 140 ℃.
(3) The single screw extruder is used for extruding by a cold top method according to the following heating temperature to process and form the once-processed materials in sequence to obtain the fiber-plastic composite material
The temperature of the first heating section is 80 ℃, the temperature of the second heating section is 120 ℃, the temperature of the third heating section is 160 ℃, the temperature of the fourth heating section is 160 ℃, the temperature of the confluence core is 140 ℃, and the temperature of the die is 140 ℃.
Example 7
The conditions were the same as in example 4 except for the following steps (1) and (2):
(1) selecting the following raw materials in percentage by weight: 60 parts of mixed waste textiles, 20 parts of PE (polyethylene), 9440.3 parts of light stabilizer, 5 parts of montan wax, 3301 parts of antioxidant, 5 parts of wood powder and 10 parts of talcum powder.
(2) Crushing 30 parts of mixed waste textiles in the preparation raw materials to 10mm, 20 parts of mixed waste textiles to 30mm and 10 parts of mixed waste textiles to 50mm to obtain crushed mixed waste textiles, and drying at 70 ℃ for 4 hours to obtain dried mixed waste textiles; respectively pulverizing other raw materials, and drying at 90 deg.C for 1 hr to obtain respectively pulverized and dried other raw materials. So that the water content of all the preparation raw materials is less than 0.3 wt%.
Example 8
The conditions were the same as in example 4 except for the following step (1):
(1) selecting the following raw materials in percentage by weight: 60 parts of mixed waste textiles, 15 parts of PE (polyethylene), 5 parts of PP (polypropylene), 9440.3 parts of light stabilizer, 5 parts of montan wax, 3301 parts of antioxidant, 5 parts of bamboo powder and 10 parts of talcum powder.
Example 9
The conditions were the same as in example 4 except for the following step (1):
(1) selecting the following raw materials in percentage by weight: 60 parts of mixed waste textiles, 10 parts of PE (polyethylene), 10 parts of PP (polypropylene), 9440.3 parts of light stabilizer, 5 parts of zinc stearate, 3301 parts of antioxidant, 5 parts of bamboo powder and 10 parts of calcium carbonate.
Example 10
The conditions were the same as in example 4 except for the following steps (1) and (2):
(1) selecting the following raw materials in percentage by weight: 70 parts of mixed waste textiles, 15 parts of PE (polyethylene), 9440.3 parts of light stabilizer, 5 parts of zinc stearate, 3301 parts of antioxidant, 5 parts of bamboo powder and 5 parts of calcium carbonate.
(2) Crushing 30 parts of mixed waste textiles in the preparation raw materials to 10mm, 25 parts of mixed waste textiles to 30mm and 15 parts of mixed waste textiles to 50mm to obtain crushed mixed waste textiles, and drying at 70 ℃ for 4 hours to obtain dried mixed waste textiles; respectively pulverizing other raw materials, and drying at 90 deg.C for 1 hr to obtain respectively pulverized and dried other raw materials. So that the water content of all the preparation raw materials is less than 0.3 wt%.
Example 11
The conditions were the same as in example 6 except for the following steps (1) and (2):
(1) selecting the following raw materials in percentage by weight: 70 parts of mixed waste textile, 15 parts of CPE (chlorinated polyethylene), 1190.3 parts of light stabilizer, 5 parts of zinc stearate, AO-801 parts of antioxidant, 5 parts of bamboo powder and 5 parts of talcum powder.
(2) Crushing 30 parts of mixed waste textiles in the preparation raw materials to 10mm, 25 parts of mixed waste textiles to 30mm and 15 parts of mixed waste textiles to 50mm to obtain crushed mixed waste textiles, and drying at 70 ℃ for 4 hours to obtain dried mixed waste textiles; respectively pulverizing other raw materials, and drying at 90 deg.C for 1 hr to obtain respectively pulverized and dried other raw materials. So that the water content of all the preparation raw materials is less than 0.3 wt%.
Example 12
The conditions were the same as in example 10 except that "5 parts of bamboo powder and 5 parts of calcium carbonate" as raw materials prepared in step (1) were replaced with "10 parts of talc.
In summary, the raw material compositions for the preparations of examples 1 to 12 are shown in Table 1, the processing temperatures for low temperature solid phase extrusion are shown in Table 2, and the processing temperatures for cold top extrusion are shown in Table 3:
table 1 examples 1-12 raw material composition table (unit: parts by mass)
Figure BDA0003142209790000151
Figure BDA0003142209790000161
TABLE 2 examples 1-12 extrusion temperature Table by Low temperature solid phase method (Unit:. degree. C.)
Figure BDA0003142209790000162
TABLE 3 examples 1-12 Cold-top extrusion temperature Table (Unit:. degree. C.)
Figure BDA0003142209790000163
Example 13
The partial performance detection, detection method and results of examples 1-12 by using GB/T245708-:
table 4 results of performance measurement of some examples
Figure BDA0003142209790000171
Example 14
The fiber-plastic composite material prepared in the embodiment 5 is made into a fiber-plastic outdoor floor with the specification of 1000 × 140 × 20mm, and the fiber-plastic composite material prepared in the embodiment 5 is further detected by using a GB/T245708-:
TABLE 5 fiber-plastic outdoor floor part Performance test results
Figure BDA0003142209790000181
Figure BDA0003142209790000191
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The fiber-plastic composite material is characterized by comprising raw materials for preparing mixed waste textiles and thermoplastic resin, wherein the raw materials are prepared by crushing, low-temperature solid-phase extrusion granulation and cold-top extrusion molding in sequence;
the processing temperature of the low-temperature solid phase method extrusion and the cold top method extrusion is not more than 230 ℃.
2. The fiber-plastic composite material according to claim 1, wherein the preparation raw materials comprise the following substances in parts by mass: 40-80 parts of mixed waste textiles, 10-40 parts of thermoplastic resin, 0.1-24 parts of auxiliary materials and 5-30 parts of fillers.
3. The fiber-plastic composite material according to claim 2, wherein the mixed waste textile is selected from one or more of polyester and polyethylene composite, polyester and polypropylene composite, polyester and cotton composite, polyester and hemp composite, and polyester and nylon composite.
4. The fiber-plastic composite material according to claim 2, wherein the thermoplastic resin is a waste thermoplastic resin.
5. The fiber-plastic composite material of claim 2, wherein the auxiliary material comprises one or more of a light stabilizer, a lubricant, and an antioxidant.
6. The fiber-plastic composite material of claim 5, wherein the preparation raw materials comprise the following auxiliary materials in parts by mass: 0.1-1 part of light stabilizer, 0.5-5 parts of lubricant and 0.5-3 parts of antioxidant.
7. A method for preparing a fiber-plastic composite material according to any one of claims 1 to 6, comprising the steps of:
(1) crushing the mixed waste textiles to below 50mm, and mixing with other crushed preparation raw materials to obtain a mixed material;
(2) extruding the mixed material by a low-temperature solid phase method for granulation to obtain a primary treatment material;
(3) extruding by a cold top method, and sequentially processing and molding the primary processing materials according to the following heating temperature to obtain a fiber-plastic composite material;
the treatment temperature of the low-temperature solid phase method and the cold top method is not more than 230 ℃.
8. The method according to claim 7, wherein the step (2) of extruding by the low temperature solid phase method comprises:
the temperature of the first heating section is 100-120 ℃, the temperature of the second heating section is 130-180 ℃, the temperature of the third heating section is 160-210 ℃, the temperature of the fourth heating section is 160-230 ℃, the temperature of the fifth heating section is 160-230 ℃, the temperature of the sixth heating section is 140-210 ℃, and the temperature of the seventh heating section is 140-210 ℃.
9. The method according to claim 7 or 8, wherein the processing procedure of the cold-top extrusion of step (3) comprises:
the temperature of the first heating section is 60-100 ℃, the temperature of the second heating section is 120-.
10. Use of the fiber-plastic composite material according to any one of claims 1 to 6 or the fiber-plastic composite material prepared by the method according to any one of claims 7 to 9 in building materials, engineering materials, furniture, artware and other industrial products.
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EP4253647A1 (en) * 2022-03-29 2023-10-04 Zhejiang Tianzhen Technology Co., Ltd. Textile waste regenerated flooring and preparation method thereof
SE2250826A1 (en) * 2022-06-30 2023-12-31 Cellucircle Ab A method and products obtained by the method
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CN105818293A (en) * 2016-04-20 2016-08-03 广德天运新技术股份有限公司 Preliminary preparation technology utilizing waste textile for producing fiber-based curing panel
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EP4253647A1 (en) * 2022-03-29 2023-10-04 Zhejiang Tianzhen Technology Co., Ltd. Textile waste regenerated flooring and preparation method thereof
SE2250826A1 (en) * 2022-06-30 2023-12-31 Cellucircle Ab A method and products obtained by the method
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