CN102585261B - Hard composite particle material made from waste textile fabrics and application thereof - Google Patents

Abstract

The invention discloses a hard composite particle material made from waste textile fabrics and an application thereof. The hard composite particle material is a particle matter obtained by the method that waste textile fabrics are firstly soaked by a vinyl reaction monomer mixture containing a radical thermal initiator, then polymerized by a thermal initiation monomer to be hardened, and finally punched. The hard composite particle material made from the waste textile fabrics disclosed by the invention can be used for filling thermoplastic plastics of which the melting temperature is below 200 DEG C, partially or completely replaces the conventional mineral filler, and further reduces product cost under the condition of not damaging product properties. Economic benefits are brought, and at the same time the waste textile fabrics are recycled, which is conductive to environmental protection.

Description

A kind of hard composite granular material produced by using waste textiles and its application

technical field

The invention relates to the technical field of fiber waste recycling, in particular to a hard composite granular material produced by using waste textiles and its application.

Background technique

Since the founding of New China 60 years ago, with the continuous improvement of people's living standards, clothing materials have also gone through several major stages of natural fibers, recycled fibers, synthetic fibers and blended materials of the three types of fibers. People's pursuit of the beauty and comfort of clothes has led to faster and faster elimination of clothes. my country has a population of more than 1.3 billion, and millions of tons of waste textile fibers are produced every year. The diversity of clothing components and the high elimination frequency of clothing bring great difficulties to the recycling of waste textile fibers. The recovery and utilization of waste textile fibers in western developed countries is still in its infancy, and my country’s normative standards for textile fiber components and regulations on the treatment of waste textile fibers are still blank. At present, most of waste textile fibers can only be used for incineration, stacking and Landfill treatment has caused great pressure on the ecological environment of our country; and caused a great waste of resources. Therefore, the recycling and resource utilization of waste textile fibers is an important issue to be solved urgently for the sustainable development of our society, energy saving and emission reduction, and low-carbon economy.

Waste textiles contain cellulose fibers, polyester fibers and nylon fibers and other fiber materials used as filling reinforcements for plastics. If these waste textile fibers are kept in the form of fibers and dispersed in plastics evenly, the plastics can be protected. To fill reinforcement, to realize the recycling of waste textiles. If these fibers are to be uniformly dispersed in thermoplastics, it is generally necessary to use an extruder melt blending process to bond and disperse the fibers. Macroscopically, waste textiles exist in the form of large sheets, which are difficult to be added to the extruder for processing; microscopically, the fibers in waste textiles mostly exist in an entangled weaving state. If the fiber length is too long If it is too large, it will be difficult to untangle and disperse under the melt shear of the extruder, which will only damage the performance of the filled plastic product. Therefore, the key to applying waste textiles in the field of thermoplastic filling reinforcement is to turn waste textiles into small pieces whose fiber length can satisfy the shearing action of the extruder. However, waste textiles are soft and have a large deformation rate, and it is difficult to find a mechanized method for turning waste textiles into small pieces in the prior art.

Chinese Patent Application No. 201010179914.0 discloses a modified engineering plastic produced from fiber waste, including the following components: 60-90 parts of fiber waste, 10-40 parts of resin raw materials, and 5-30 parts of special compatibilizer , 0.1-3 parts of additives. The fibrous waste includes textile waste. The invention realizes the green and environment-friendly recycling of fibrous wastes, and since more than 60% of the raw materials of this material are the most common wastes, its cost is lower than that of similar products. Moreover, the new preparation process of the modified engineering plastics of the present invention can also avoid the damage to the material performance caused by thermal degradation of the polymer material due to repeated processing.

Contents of the invention

The object of the present invention is to provide a hard composite granular material produced by using waste textiles.

Another object of the present invention is to provide an application path for the above-mentioned hard composite granular material produced from waste textiles.

The present invention realizes above-mentioned object through following technical scheme:

The present invention uses soft waste textiles as raw materials to prepare hard composite granular materials suitable for filling thermoplastics. Composed of free radical thermal polymerization products of vinyl monomers, with a particle size of 4 to 12 mm, it is made of waste textiles that are first impregnated with a vinyl reaction monomer mixture containing a free radical thermal initiator, and then hardened by thermally initiating monomer polymerization , Finally, the pellets obtained by die-cutting have a thermal polymerization time of 0.5 to 3 hours, which is convenient for mechanized continuous production.

The specific preparation steps of the hard composite granular material produced from waste textiles are as follows:

(1) Preparation of impregnation solution: disperse the free radical thermal initiator in the vinyl monomer to prepare an impregnation solution with a mass percentage of 0.3-2%;

(2) Impregnation: The exhausted textiles are soaked and extruded in the impregnating liquid to obtain the treated waste textiles, and the mass percentage of the impregnating liquid is 10%~30%;

(3) Curing: heating and curing the treated waste textiles in a thermal environment above the decomposition temperature of the free radical thermal initiator for 0.5 to 3 hours to obtain hardened waste textiles;

(4) Punching: Die hardened waste textiles into granules by pressure to obtain hardened granules of waste textiles.

Wherein, the free radical thermal initiator in step (1) is benzoyl peroxide. The vinyl monomer is one or more mixtures of styrene, acrylic acid, methyl methacrylate, butyl methacrylate or vinyl acetate; the most preferred mixture of styrene and methyl methacrylate as a monomer for hardening waste textiles.

The reason why the mass percentage of the impregnation solution in step (2) is controlled at 10% to 30% is: when the percentage is lower than 10%, the hardened waste textiles are too soft and not suitable for punching processing; when the percentage is higher than 30% , the cost of the prepared hard composite particles is too high.

The thermal polymerization (curing) time in step (3) is 0.5-3 hours, because the time is too short, the polymerization of monomers is incomplete, and the obtained copolymer product has low molecular weight and poor performance; if the time is too long, the cost will increase.

The application of the hard composite granular material produced by using waste textiles in filling thermoplastics whose melting temperature is below 200°C. When the processing temperature is higher than 200°C, the fibers of some waste textiles may decompose or melt, and the shape of the fibers cannot be maintained.

Wherein the thermoplastic with melting temperature below 200°C is preferably polyethylene, polypropylene, polystyrene, polyvinyl chloride, polymethyl methacrylate, polyoxymethylene, acrylonitrile-butadiene-styrene resin (ABS ) or styrene-butadiene-styrene block copolymer (SBS).

The weight ratio of hard composite granular materials produced from waste textiles to thermoplastics with a melting temperature below 200°C is 3:7.

When applied to filling thermoplastics, the dimension (particle size) of the hard composite granular material of the present invention is preferably controlled within 4-12 mm. If the dimension is too small, it is not only difficult to die-cut, but also the fiber with too small size is difficult to achieve the reinforcing effect; if the size is too large, it is difficult for the fibers of waste textiles to be uniformly dispersed in the plastic during the melt blending process.

Compared with the prior art, the present invention has the following beneficial effects:

The hard composite particle material produced by the waste textiles in the present invention is not only simple and convenient in operation, but also after the obtained hard particles enter the plastic melt, there is a polymer spacer between the threads of the waste clothes in the weaving state, which can be easily sheared by the screw In addition, these polymers with special functional groups also play a role in compatibilization between plastics and clothing fibers, so that waste clothing can play the final effect of reinforcing plastics.

The hard composite granular material of the present invention is mainly supplied to modified plastics enterprises to partially or completely replace traditional mineral fillers, so as to further reduce product costs without compromising product performance. With the current scale of most factories, the annual processing of waste textiles can reach 5,000 tons, which can bring considerable economic benefits, and its environmental protection value is far greater than the sales profit.

Description of drawings

FIG. 1 is a scanning electron microscope image of hardened particles obtained in Example 1.

Fig. 2 is a scanning electron micrograph of the impact section of the hardened particle-filled polypropylene obtained in Example 6.

Fig. 3 is a scanning electron micrograph of hardened particles obtained in Example 11.

Detailed ways

The present invention is further illustrated by the following examples, and the present invention is not therefore limited to the scope of the examples.

Example 1

Mix styrene monomer and methyl methacrylate monomer in a molar ratio of 3:1 to obtain a monomer mixture, add thermal initiator benzoyl peroxide to the monomer mixture, and prepare the mass of benzoyl peroxide The monomer mixture with a percentage concentration of 0.5% is stirred and mixed uniformly to obtain an impregnation solution. The waste textiles are subjected to repeated soaking and extrusion cycles in the soaking solution, so that the treated waste textiles contain 30% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90° C. for 1.5 hours to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 8mm×8mm through a blade die to obtain the hardened granules of the waste textiles of the present invention. The microscopic morphology of the hardened particles is shown in Figure 1, and the relevant physical properties are shown in Table 1.

Example 2

Mix styrene monomer and methyl methacrylate monomer according to the molar ratio of 2:1 to obtain a monomer mixture, add thermal initiator benzoyl peroxide to the monomer mixture, and prepare the mass of benzoyl peroxide The monomer mixture with a percentage concentration of 0.5% is stirred and mixed uniformly to obtain an impregnation solution. The waste textiles are subjected to repeated soaking and extrusion cycles in the soaking solution, so that the treated waste textiles contain 30% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90°C for 1 hour to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 8mm×8mm through a blade die to obtain the hardened granules of the waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 3

Mix styrene monomer and methyl methacrylate monomer at a molar ratio of 1:1 to obtain a monomer mixture, add thermal initiator benzoyl peroxide to the monomer mixture, and prepare the mass of benzoyl peroxide The monomer mixture with a percentage concentration of 0.5% is stirred and mixed uniformly to obtain an impregnation solution. The waste textiles are subjected to repeated soaking and extrusion cycles in the soaking solution, so that the treated waste textiles contain 30% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90°C for 1 hour to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 8mm×8mm through a blade die to obtain the hardened granules of the waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 4

Mix styrene monomer and methyl methacrylate monomer according to the molar ratio of 1:2 to obtain a monomer mixture, add thermal initiator benzoyl peroxide to the monomer mixture, and prepare the mass of benzoyl peroxide The monomer mixture with a percentage concentration of 0.5% is stirred and mixed uniformly to obtain an impregnation solution. The waste textiles are subjected to repeated soaking and extrusion cycles in the soaking solution, so that the treated waste textiles contain 30% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90°C for 1 hour to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 8mm×8mm through a blade die to obtain the hardened granules of the waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 5

Mix styrene monomer and methyl methacrylate monomer at a molar ratio of 1:3 to obtain a monomer mixture, add thermal initiator benzoyl peroxide to the monomer mixture, and prepare the mass of benzoyl peroxide The monomer mixture with a percentage concentration of 0.5% is stirred and mixed uniformly to obtain an impregnation solution. The waste textiles are subjected to repeated soaking and extrusion cycles in the soaking solution, so that the treated waste textiles contain 30% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90°C for 1 hour to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 8mm×8mm through a blade die to obtain the hardened granules of the waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 6

Mix the hardened waste textile granules obtained in Example 1 with polypropylene at a mass ratio of 30:70, and then melt and extrude them at a temperature of 200° C., so that the obtained hardened waste textile granules are filled with polypropylene composite materials. Figure 3 is the microscopic topography of the material. It can be seen that the fabric fibers have dissociated into monofilaments during processing and are evenly dispersed in the polypropylene plastic. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 7

Mix the hardened waste textile granules obtained in Example 2 with polypropylene at a mass ratio of 30:70, and then melt and extrude them at a temperature of 200° C. to fill the polypropylene composite material with the hardened waste textile granules. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 8

After uniformly mixing the hardened waste textile granules obtained in Example 3 and polypropylene at a mass ratio of 30:70, they were melt-extruded at a temperature of 200° C., and the obtained hardened waste textile granules were filled with polypropylene composite materials. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 9

After uniformly mixing the hardened waste textile granules obtained in Example 4 with polypropylene at a mass ratio of 30:70, they were melt-extruded at a temperature of 200° C., and the obtained hardened waste textile granules were filled with polypropylene composite materials. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 10

After uniformly mixing the waste textile hardened particles obtained in Example 5 with polypropylene at a mass ratio of 30:70, they were melt-extruded at a temperature of 200° C., and the obtained waste textile hardened particles were filled with polypropylene composite materials. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 11

Styrene monomer and methyl methacrylate monomer are mixed according to the molar ratio of 2:1 to obtain a monomer mixture, and a thermal initiator benzoyl peroxide is added to the monomer mixture to prepare the mass of benzoyl peroxide The monomer mixture with a percentage concentration of 0.3% is stirred and mixed uniformly to obtain an impregnation solution. The waste textiles are subjected to repeated dipping and extrusion cycles in the soaking solution, so that the treated waste textiles contain 10% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90°C for 2 hours to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 8mm×8mm through a blade die to obtain the hardened granules of the waste textiles of the present invention. The microscopic morphology of the hardened particles is shown in Figure 3, and the relevant physical properties are shown in Table 1.

Example 12

Styrene monomer and methyl methacrylate monomer are mixed according to the molar ratio of 2:1 to obtain a monomer mixture, and a thermal initiator benzoyl peroxide is added to the monomer mixture to prepare the mass of benzoyl peroxide The monomer mixture with a percentage concentration of 1% is stirred and mixed uniformly to obtain an impregnation solution. The waste textiles are subjected to repeated dipping and extrusion cycles in the soaking solution, so that the treated waste textiles contain 20% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90°C for 45 minutes to obtain hardened waste textiles. The hardened waste textiles were cut into granules with a size of 8mm×8mm through a blade die to obtain the hardened granules of waste textiles of the present invention, and the relevant physical properties are shown in Table 1.

Example 13

Styrene monomer and methyl methacrylate monomer are mixed according to the molar ratio of 2:1 to obtain a monomer mixture, and a thermal initiator benzoyl peroxide is added to the monomer mixture to prepare the mass of benzoyl peroxide The monomer mixture with a percentage concentration of 2% is stirred and mixed uniformly to obtain an impregnation solution. The waste textiles are subjected to repeated soaking and extrusion cycles in the soaking solution, so that the treated waste textiles contain 30% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90° C. for 0.5 hour to obtain hardened waste textiles. The hardened waste textiles were cut into granules with a size of 4mm×4mm through a blade die to obtain the hardened granules of waste textiles of the present invention. The relevant physical properties are shown in Table 1.

Example 14

Styrene monomer and methyl methacrylate monomer are mixed according to the molar ratio of 2:1 to obtain a monomer mixture, and a thermal initiator benzoyl peroxide is added to the monomer mixture to prepare the mass of benzoyl peroxide The monomer mixture with a percentage concentration of 0.5% is stirred and mixed uniformly to obtain an impregnation solution. The waste textiles are subjected to repeated dipping and extrusion cycles in the soaking solution, so that the treated waste textiles contain 20% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90° C. for 1.5 hours to obtain hardened waste textiles. The hardened waste textiles were cut into granules with a size of 12mm×12mm by a blade die to obtain the hardened granules of waste textiles of the present invention, and the relevant physical properties are shown in Table 1.

Example 15

The waste textile hardened particles obtained in Example 11 were uniformly mixed with polypropylene at a mass ratio of 30:70, and then melt-extruded at a temperature of 200° C., and the obtained waste textile hardened particles were filled with polypropylene composite materials. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 16

After uniformly mixing the waste textile hardened particles obtained in Example 12 with polypropylene at a mass ratio of 20:80, they were melt-extruded at a temperature of 200° C., and the obtained waste textile hardened particles were filled with polypropylene composite materials. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 17

After uniformly mixing the waste textile hardened particles obtained in Example 13 with polypropylene at a mass ratio of 10:90, they were melt-extruded at a temperature of 200° C., and the obtained waste textile hardened particles were filled with polypropylene composite materials. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 18

After uniformly mixing the waste textile hardened particles obtained in Example 14 with polypropylene at a mass ratio of 30:70, they were melt-extruded at a temperature of 200° C., and the obtained waste textile hardened particles were filled with polypropylene composite materials. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 19

The thermal initiator benzoyl peroxide is added to the acrylic acid monomer to prepare a monomer mixture with a mass percent concentration of benzoyl peroxide of 0.3%, and the impregnating liquid is obtained after stirring and mixing evenly. The waste textiles are subjected to repeated dipping and extrusion cycles in the soaking solution, so that the treated waste textiles contain 20% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90°C for 2 hours to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 4mm×4mm through a blade die to obtain the hardened granules of waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 20

Add thermal initiator benzoyl peroxide to styrene monomer to prepare a monomer mixture with benzoyl peroxide concentration of 0.5% by mass, stir and mix evenly to obtain impregnating liquid. The waste textiles are subjected to repeated dipping and extrusion cycles in the soaking solution, so that the treated waste textiles contain 20% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90° C. for 1.5 hours to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 4mm×4mm through a blade die to obtain the hardened granules of waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 21

Add thermal initiator benzoyl peroxide to vinyl acetate monomer to prepare monomer mixture with benzoyl peroxide concentration of 1% by mass, stir and mix evenly to obtain impregnating liquid. The waste textiles are subjected to repeated dipping and extrusion cycles in the soaking solution, so that the treated waste textiles contain 20% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90°C for 1 hour to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 4mm×4mm through a blade die to obtain the hardened granules of waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 22

Add thermal initiator benzoyl peroxide to methyl methacrylate monomer to prepare 1.5% monomer mixture with benzoyl peroxide concentration of 0.5% by mass, stir and mix evenly to obtain impregnation solution. The waste textiles are subjected to repeated dipping and extrusion cycles in the soaking solution, so that the treated waste textiles contain 20% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90°C for 45 minutes to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 4mm×4mm through a blade die to obtain the hardened granules of waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 23

Add thermal initiator benzoyl peroxide to butyl methacrylate monomer to prepare monomer mixture with benzoyl peroxide concentration of 2% by mass, stir and mix evenly to obtain impregnating liquid. The waste textiles are subjected to repeated dipping and extrusion cycles in the soaking solution, so that the treated waste textiles contain 20% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90° C. for 0.5 hour to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 4mm×4mm through a blade die to obtain the hardened granules of waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 24

Mix styrene monomer and acrylic acid monomer according to the molar ratio of 2:1 to obtain monomer mixture, add thermal initiator benzoyl peroxide to the monomer mixture, and prepare the mass percent concentration of benzoyl peroxide as 0.5% monomer mixture, stir and mix evenly to obtain impregnating liquid. The waste textiles are subjected to repeated dipping and extrusion cycles in the soaking solution, so that the treated waste textiles contain 20% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90° C. for 1.5 hours to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 4mm×4mm through a blade die to obtain the hardened granules of waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 25

Styrene monomer and vinyl acetate monomer are mixed according to the molar ratio of 2:1 to obtain a monomer mixture, and thermal initiator benzoyl peroxide is added to the monomer mixture to prepare the mass percentage of benzoyl peroxide A monomer mixture with a concentration of 0.5% is stirred and mixed uniformly to obtain an impregnation solution. The waste textiles are subjected to repeated soaking and extrusion cycles in the soaking solution, so that the treated waste textiles contain 30% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90° C. for 1.5 hours to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 4mm×4mm through a blade die to obtain the hardened granules of waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 26

Styrene monomer and butyl methacrylate monomer are mixed according to the molar ratio of 2:1 to obtain monomer mixture, and thermal initiator benzoyl peroxide is added in monomer mixture to prepare the quality of benzoyl peroxide The monomer mixture with a percentage concentration of 0.5% is stirred and mixed uniformly to obtain an impregnation solution. The waste textiles are subjected to repeated soaking and extrusion cycles in the soaking solution, so that the treated waste textiles contain 30% by mass of the soaking solution. The treated waste textiles were heated in a sealed box at 90° C. for 1.5 hours to obtain hardened waste textiles. The hardened waste textiles are cut into granules with a size of 4mm×4mm through a blade die to obtain the hardened granules of waste textiles of the present invention. The relevant physical properties of the hardened particles are shown in Table 1.

Example 27

After uniformly mixing the waste textile hardened particles obtained in Example 19 with polyethylene at a mass ratio of 30:70, they were melt-extruded at a temperature of 160° C., and the obtained waste textile hardened particles were filled with polyethylene composite materials. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 28

After uniformly mixing the waste textile hardened particles obtained in Example 20 with polypropylene at a mass ratio of 30:70, they were melt-extruded at a temperature of 200° C., and the obtained waste textile hardened particles were filled with polypropylene composite materials. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 29

After uniformly mixing the waste textile hardened granules obtained in Example 21 with general-purpose polystyrene at a mass ratio of 30:70, they were melt-extruded at a temperature of 180° C., and the obtained waste textile hardened granules were filled with polystyrene The composites, tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 30

After uniformly mixing the hardened waste textile granules obtained in Example 22 with polyvinyl chloride at a mass ratio of 30:70, they were melt-extruded at a temperature of 170° C., and the obtained hardened waste textile granules were filled with polyvinyl chloride composite The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 31

The waste textile hardened particles obtained in Example 23 were uniformly mixed with polymethyl methacrylate at a mass ratio of 30:70, and then melted and extruded at a temperature of 195°C, and the obtained waste textile hardened particles were filled with polymethyl methacrylate. MMA composites, tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 32

After uniformly mixing the hardened waste textile granules obtained in Example 24 with polyoxymethylene at a mass ratio of 30:70, they were melt-extruded at a temperature of 200° C., and the obtained hardened waste textile granules were filled with polyoxymethylene composite materials. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 33

After uniformly mixing the waste textile hardened particles obtained in Example 25 with acrylonitrile-butadiene-styrene resin (ABS) at a mass ratio of 30:70, melt extrusion at a temperature of 200°C, the obtained The waste textile hardened particles were filled with acrylonitrile-butadiene-styrene resin composites. The tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

Example 34

Mix the waste textile hardened particles obtained in Example 26 with styrene-butadiene-styrene block copolymer (SBS) at a mass ratio of 30:70, and then melt-extrude them at a temperature of 270°C , the obtained waste textile hardened particles filled styrene-butadiene-styrene block copolymer composites, the tensile strength, flexural strength and notched impact strength of the composites are shown in Table 2.

The relevant physical properties of the waste textile hardened particles obtained in each embodiment of Table 1

serial number Monomer type and molar ratio Initiator dosage (wt%) Particle size (mm×mm) Monomer polymerization product content (wt%) Tensile Young's modulus (MPa) Example 1 n (styrene): n (methyl methacrylate) = 3:1 0.5 8×8 30 452 Example 2 n (styrene): n (methyl methacrylate) = 2:1 0.5 8×8 30 448 Example 3 n (styrene): n (methyl methacrylate) = 1:1 0.5 8×8 30 437 Example 4 n (styrene): n (methyl methacrylate) = 1:2 0.5 8×8 30 438 Example 5 n (styrene): n (methyl methacrylate) = 1:3 0.5 8×8 30 412 Example 11 n (styrene): n (methyl methacrylate) = 2:1 0.3 8×8 30 457 Example 12 n (styrene): n (methyl methacrylate) = 2:1 1 8×8 10 251 Example 13 n (styrene): n (methyl methacrylate) = 2:1 2 4×4 30 392 Example 14 n (styrene): n (methyl methacrylate) = 2:1 0.5 12×12 20 285 Example 19 acrylic acid 0.3 4×4 20 231 Example 20 Styrene 0.5 4×4 20 248 Example 21 vinyl acetate 1 4×4 20 242 Example 22 Methyl methacrylate 1.5 4×4 20 255 Example 23 Butyl methacrylate 2 4×4 20 272 Example 24 n (styrene): n (acrylic acid) = 2:1 0.5 4×4 20 257 Example 25 n (styrene): n (vinyl acetate) = 2:1 0.5 4×4 30 297 Example 26 n (styrene): n (butyl methacrylate) = 2:1 0.5 4×4 30 409

Table 2 is the relevant physical properties of waste textile hardened particles filled thermoplastics

serial number Types of Thermoplastics Hard particle type and filling amount (wt%) Tensile strength (MPa) Flexural modulus (MPa) Impact strength (kJ/m ² ) Example 6 Polypropylene The particle (30wt%) of embodiment 1 36.9 1723 4.22 Example 7 Polypropylene The particle (30wt%) of embodiment 2 37.7 2043 4.55 Example 8 Polypropylene The particle (30wt%) of embodiment 3 35.1 1875 3.83 Example 9 Polypropylene The particle (30wt%) of embodiment 4 34.9 1870 3.96 Example 10 Polypropylene The particle (30wt%) of embodiment 5 34.3 1840 4.53 Example 15 Polypropylene The particle (30wt%) of embodiment 11 40.2 2199 4.38 Example 16 Polypropylene The particle (20wt%) of embodiment 12 38.4 2038 4.41 Example 17 Polypropylene The particle (10wt%) of embodiment 13 40.7 2259 5.53 Example 18 Polypropylene The particle (30wt%) of embodiment 14 37.3 1847 3.92 Example 27 polyethylene The particle (30wt%) of embodiment 19 34.3 1840 4.53 Example 28 Polypropylene The particle (30wt%) of embodiment 20 36.3 1770 4.09 Example 29 polystyrene The particle (30wt%) of embodiment 21 24.3 2740 5.53 Example 30 PVC Particles of Example 22 (30wt%) 44.3 2840 2.9 Example 31 Polymethylmethacrylate Particles of Example 23 (30wt%) 51.3 3480 1.32 Example 32 POM Particles of Example 24 (30wt%) 60.9 2853 5.71 Example 33 Acrylonitrile-Butadiene-Styrene Resin The particle (30wt%) of embodiment 25 33.7 2243 8.49 Example 34 Styrene-Butadiene-Styrene Copolymer Particles (30wt%) of Example 26 29.5 761 14.53

Claims (5)

1. one kind is utilized the hard composite particulate material of discarding yarn fabric production, it is characterized in that the preparation method is as follows:

(1) steeping fluid preparation: the free radical thermal initiator is dispersed in to be mixed with mass percent in vinyl monomer be 0.3～2% steeping fluid;

(2) dipping: with waste gas yarn fabric process dipping and extrusion cycle in steeping fluid, obtain processing discarded yarn fabric, wherein the mass percent of steeping fluid is 10% ~ 30%;

(3) solidify: will process in the discarded thermal environment of yarn fabric more than the decomposition temperature of free radical thermal initiator being heating and curing 0.5 ~ 3 hour, the discarded yarn fabric that obtains hardening;

(4) die-cut: the discarded yarn fabric that will harden is die-cut into particulate state through pressure, obtains the hard composite particulate material;

Described free radical thermal initiator is benzoyl peroxide; Described vinyl monomer is the mixture of vinylbenzene and methyl methacrylate.

2. the hard composite particulate material of the discarded yarn fabric production of the described utilization of claim 1 is being filled the application of melt temperature in the thermoplastics below 200 ℃.

3. application according to claim 2 is characterized in that described melt temperature is polyethylene, polypropylene, polystyrene, polyvinyl chloride, polymethylmethacrylate, polyoxymethylene, acrylonitrile-butadiene-styrene resin or styrene-butadiene-styrene block copolymer at the thermoplastics below 200 ℃.

4. application according to claim 2 is characterized in that hard composite particulate material and the melt temperature of utilizing discarded yarn fabric to produce are 3:7 at the part by weight of the thermoplastics below 200 ℃.

5. application according to claim 2 is characterized in that utilizing the particle diameter of the hard composite particulate material of discarding yarn fabric production is 4 ~ 12mm.

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