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CN101787185B - Heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material and preparation method thereof - Google Patents

Heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material and preparation method thereof Download PDF

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Publication number
CN101787185B
CN101787185B CN200910105326XA CN200910105326A CN101787185B CN 101787185 B CN101787185 B CN 101787185B CN 200910105326X A CN200910105326X A CN 200910105326XA CN 200910105326 A CN200910105326 A CN 200910105326A CN 101787185 B CN101787185 B CN 101787185B
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free flame
resin
composite material
retardant
halogen
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CN101787185A (en
Inventor
谢建达
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Polymer Science Shenzhen New Materials Co Ltd
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Polymer Science Shenzhen New Materials Co Ltd
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    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/88Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/918Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
    • B29C48/9185Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling in the direction of the stream of the 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04Particle-shaped
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/405Intermeshing co-rotating screws
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • 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
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92514Pressure
    • 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
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • B29C2948/9259Angular velocity
    • 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
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • 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
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885Screw or gear
    • 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
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895Barrel or housing
    • 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
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92904Die; Nozzle zone

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Biological Depolymerization Polymers (AREA)

Abstract

The invention discloses a heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material and a preparation method thereof. The composite material is prepared from the following raw materials: modified polylactic resin, aromatic polycarbonate resin, aliphatic polyster resin, a cross-linking agent, a halogen-free flame retardant, white oil, a dispersing agent, an antioxygen, and a processing aid. The preparation method comprises the following steps: a, drying the modified polylactic resin; b, uniformly mixing the dried modified polylactic resin and the white oil; c, uniformly mixing the cross-linking agent and the dispersing agent; d, continuously mixing the halogen-free flame retardant, the antioxygen, the processing aid and the mixed materials in step b and step c; and e, putting the mixed material in step d into a twin-screw extruder, and performing melt extrusion for granulation. The invention provides a composite material having the advantages of heat resistance, flame retardancy and good impact resistance, and a method for preparing the composite material, which has the advantages of simple production process, convenient operation and low cost.

Description

Heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material and preparation method thereof
Technical field
The invention belongs to technical field of polymer materials, relate to a kind of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material and preparation method thereof.The formed product of this matrix material can be widely used in fields such as clothes, weaving, packing, eagroforestry, health care, life are daily.
Background technology
At the petroleum resources growing tension; The 21 century that environmental stress highlights; Many countries will build the resource recycling society of Sustainable development as one of state basic policy, and development environment has good biodegradated polymer materal just to become a megatrend of 21 century material development energetically.
Polylactic resin (PLA) be unique be the chemosynthetic organism degraded macromolecular material of raw material with the renewable biological source; Renewable raw materials such as W-Gum; Yam starch, straw etc., so PLA has broken away from the dependence to petroleum resources; And the common petroleum base polymer of its manufacturing process ability loss-rate is low, is a kind of macromolecular material of low-resource carrying capacity of environment.PLA has good processibility, can equally carry out various forming process with common polymer, as extrude, injection moulding, blown film, fiberizing etc.Various sheet materials, fiber and the film products obtained therefrom after secondary processing such as thermoforming, spinning of preparation can be widely used in fields such as clothes, weaving, packing, eagroforestry, health care, life are daily.But because PLA itself is heat-resisting poor, shock resistance is low, and forming stability deficiency etc. has influenced its application as engineering plastics.Therefore, the modification that is necessary PLA is carried out aspect such as heat-resisting, durable, toughness reinforcing is to widen its Application Areas.
In order to make PLA be applied to all trades and professions as engineering plastics more widely; Forefathers have done a large amount of work; Comprising with heat-resisting and toughness all excellent aromatic copolycarbonate and PLA making matrix material, improving its thermal property and mechanical property, and obtained effect.But this wherein also has many weak points.For example, because co-mixing system consistency shortcoming or disperse unequal problem to cause production process expanded, tie rod to occur extruding to have some setbacks, bad phenomenon such as injection moulding article surface peeling has pearliness, and shock resistance is not up to standard etc.
Summary of the invention
The technical problem that the present invention will solve is, to the above-mentioned defective of prior art, a kind of heat-resisting, fire-retardant, heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material that erosion-resisting characteristics is good is provided.
The technical problem that the present invention further will solve is, the preparation method of the heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material that a kind of production technique is simple, easy to operate, cost is low is provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of heat-resistant halogen-free flame-retardant polylactic acid is many
Unit's matrix material, process by the raw material of following parts by weight:
Modified polylactic resin 25~40;
Aromatic polycarbonate resin 20~45;
Aliphatic polyester resin 10~25;
Linking agent 0.5~2;
Halogen-free flame retardants 5~20;
White oil 0.1~0.5;
Dispersion agent 0.1~1;
Oxidation inhibitor 0.2~0.6;
Processing aid 0.1~1.
Said modified polylactic resin is the poly (l-lactic acid) resin of capacity increasing modifying, and its molecular weight is 30000-200000.
Said aromatic copolycarbonate is a bisphenol A polycarbonate.
Said aliphatic polyester is to be selected from poly butylene succinate, polyethylene glycol adipate, polyethylene glycol succinate, polycaprolactone, the poly adipate succinic acid ester any.
Said linking agent is at least a in organo-peroxide, acid anhydrides, epoxy compounds and the isocyanic ester; Said halogen-free flame retardants is the mixture of at least two kinds of composite formation in phosphorus flame retardant, nitrogen flame retardant, the silicon-series five-retardant; Said oxidation inhibitor is the composite mixture of four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters and tricresyl phosphite (2,4-di-t-butyl phenyl ester).
Said dispersion agent is a fatty acyl amide compound.
Said fatty acyl amide compound is any in amine hydroxybenzene, stearic amide, the mustard acid amides.
Said processing aid is at least a in hydrolysis inhibitor, the UV light absorber.
The preparation method of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material may further comprise the steps:
A: earlier with the modified polylactic resin drying treatment;
B: modified polylactic resin, the white oil that will pass through drying treatment mix;
C: linking agent and dispersant is even;
D: mixed raw materials among aromatic polycarbonate resin, aliphatic polyester resin, halogen-free flame retardants, oxidation inhibitor, processing aid and step b and the step c is continued to be mixed to evenly;
E: the steps d mixed raw materials is put into twin screw extruder, through melt extruding granulation.
The preparation method of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material preferably includes following steps:
A: earlier with modified polylactic resin dry 3-4 hour of 45 ℃ of vacuum drying ovens;
B: modified polylactic resin, the white oil that will pass through drying treatment mix in super mixer;
C: linking agent and dispersion agent are mixed in super mixer;
D: mixed raw materials among aromatic polycarbonate resin, aliphatic polyester resin, halogen-free flame retardants, oxidation inhibitor, processing aid and step b and the step c is continued to be mixed to evenly;
D: mixed raw materials in the steps d is put in the loading hopper of twin screw extruder, through melt extruding granulation; Its processing condition are: twin screw extruder one district temperature 200-230 ℃, two district temperature 200-230 ℃, three district temperature 200-230 ℃, four district temperature 200-230 ℃, head 200-220 ℃, engine speed is 450 rev/mins, and pressure is 12-18MPa.
The present invention adopts modified polylactic resin, aromatic polycarbonate resin, aliphatic polyester resin as blended material; Wherein, Modified polylactic resin is the polylactic resin through capacity increasing modifying; Improved the system consistency, improved the phenomenon of phase separation that blend such as pure property polylactic resin and aromatic polycarbonate resin occur greatly, and in co-mixing system, added aliphatic polyester and improve toughness of products; Aliphatic polyester is a Biodegradable resin, has not only improved the toughness of matrix material but also increased the ratio of matrix material degradable part.In above-mentioned blend composition, added the halogen-free flame retardants of highly efficiency compositional, use be that phosphorus system is a compound flame retardant with silicon, realized the purpose of halogen-free environmental, guaranteed this matrix material when having the halogen-free flameproof function, its each item physical and mechanical property excellence; Finally obtain the biodegradable based composites of each item excellent property.Also used a small amount of linking agent of organo-peroxide efficiently in the raw material, made the resin in the system slight crosslinked phenomenon occur, to improve the thermotolerance of matrix material.
The process for producing of matrix material of the present invention is simple, and cost is moderate.
Embodiment
For ease of the present invention is further understood, combine specific embodiment to describe the present invention at present:
In the matrix material raw material of the following example,
Oxidation inhibitor is four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester or tricresyl phosphites (2,4-di-t-butyl phenyl ester), the product of selecting for use Ciba company to produce, and trade names are respectively Irganox1010, and Irganox168.
Fire retardant is Resorcinol-two (two-2,6-3,5-dimethylphenyl SULPHOSUCCINIC ACID ESTER) PX-200 of big eight chemical prodn, and the silicone powder is the MDL-100 that Yunlong, Yin state, Ningbo City Man Deer plastics factory produces.Composite halogen-free flame retardants is that Resorcinol-two (two-2,6-3,5-dimethylphenyl SULPHOSUCCINIC ACID ESTER) and silicone powder are composite, and wherein the SULPHOSUCCINIC ACID ESTER consumption is 4.9-18 part by weight, and silicone powder consumption is 0.1-2 part;
Aliphatic polyester is poly butylene succinate PBS, general commercially available getting final product.
Polycarbonate is that molecular weight is the bisphenol A-type PC of 20000-30000;
Linking agent is an organo-peroxide, selects Di Cumyl Peroxide 99 (DCP) for use;
Dispersion agent is the stearic amide compounds, is specially ethylene bis stearic acid amide EBS;
The mixture of oxidation inhibitor phenolic antioxidant 1010 and phosphite antioxidant class 168.
Other auxiliary agent comprises hydrolysis inhibitor, uv-absorbing agent.
The preparation of modified polylactic resin:
With polylactic resin in dry 3-4 hour of 45 ℃ of vacuum drying ovens; Take by weighing dry good PLA resin, maleic anhydride and initiator Di Cumyl Peroxide 99 DCP; Three's part by weight is 100: 5: 0.5, mixes then, by the parallel dual-screw extruding machine extruding pelletization.The complete processing of parallel dual-screw extruding machine is following: 150~180 ℃ of district's temperature, and 150~180 ℃ of two district's temperature, 150~180 ℃ of three district's temperature, 150~180 ℃ of four district's temperature, head temperature 170, engine speed are 400 rev/mins.
Embodiment 1
A kind of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material, process by the raw material of following parts by weight:
37.6 parts of modified polylactic resin; 45.0 parts of bisphenol A polycarbonate resins; 10.0 parts of poly butylene succinates; 0.5 part of Di Cumyl Peroxide 99; 0.1 part of white oil; PX-2004.9 part; 0.1 part in silicone powder; 1 part of ethylene bis stearic acid amide; Four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.2 part of pentaerythritol ester, 0.1 part of tricresyl phosphite (2, the 4-di-tert-butyl) ester; 0.7 part of hydrolysis inhibitor (ADR-4370), 0.3 part of uv-absorbing agent (UV-5411).
The preparation of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material may further comprise the steps
A: earlier with modified polylactic resin dry 3 hours of 45 ℃ of vacuum drying ovens;
B: modified polylactic resin, the white oil that will pass through drying treatment mix in super mixer;
C: linking agent and dispersion agent are mixed in super mixer;
D: mixed raw materials among aromatic polycarbonate resin, aliphatic polyester resin, halogen-free flame retardants, oxidation inhibitor, processing aid and step b and the step c is put in the super mixer, continued under room temperature state, to mix 5min.
E: mixed raw materials in the steps d is put in the loading hopper of twin screw extruder, through melt extruding granulation; Its processing condition are: 200 ℃ of twin screw extruder one district's temperature, and 200 ℃ of two district's temperature, 200 ℃ of three district's temperature, 200 ℃ of four district's temperature, 200 ℃ of heads, engine speed are 450 rev/mins, pressure is 12MPa.
Embodiment 2, and a kind of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material is processed by the raw material of following parts by weight: 32.7 parts of modified polylactic resin; 28.0 parts of bisphenol A polycarbonate resins; 25.0 parts of poly butylene succinates; 0.2 part of Di Cumyl Peroxide 99; 0.2 part of white oil; PX-20010 part; 1 part in silicone powder; 0.1 part of ethylene bis stearic acid amide; Four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.1 part of pentaerythritol ester, tricresyl phosphite (2,0.1 part of 4-di-t-butyl phenyl ester; 0.6 part of hydrolysis inhibitor (ADR-4370), 0.2 part of uv-absorbing agent (UV-5411).
The preparation of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material may further comprise the steps:
A: earlier with modified polylactic resin dry 4 hours of 45 ℃ of vacuum drying ovens;
B: modified polylactic resin, the white oil that will pass through drying treatment mix in super mixer;
C: linking agent and dispersion agent are mixed in super mixer;
D: mixed raw materials among aromatic polycarbonate resin, aliphatic polyester resin, halogen-free flame retardants, oxidation inhibitor, processing aid and step b and the step c is put in the super mixer, continued under room temperature state, to mix 5min.
E: mixed raw materials in the steps d is put in the loading hopper of twin screw extruder, through melt extruding granulation; Its processing condition are: 220 ℃ of twin screw extruder one district's temperature, and 220 ℃ of two district's temperature, 220 ℃ of three district's temperature, 220 ℃ of four district's temperature, 210 ℃ of heads, engine speed are 450 rev/mins, pressure is 15MPa.
Embodiment 3, and a kind of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material is processed by the raw material of following parts by weight: 25.0 parts of modified polylactic resin; 35.9 parts of bisphenol A polycarbonate resins; 20.0 parts of poly butylene succinates; 1 part of Di Cumyl Peroxide 99; 0.4 part of white oil; PX-20015 part; 1.5 parts in silicone powder; 0.5 part of ethylene bis stearic acid amide; Four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3 part of pentaerythritol ester, tricresyl phosphite (2,0.3 part of 4-di-t-butyl phenyl ester; 0.1 part of uv-absorbing agent (UV-5411).
The preparation of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material may further comprise the steps:
A: earlier with modified polylactic resin dry 3.5 hours of 45 ℃ of vacuum drying ovens;
B: modified polylactic resin, the white oil that will pass through drying treatment mix in super mixer;
C: linking agent and dispersion agent are mixed in super mixer;
D: mixed raw materials among aromatic polycarbonate resin, aliphatic polyester resin, halogen-free flame retardants, oxidation inhibitor, processing aid and step b and the step c is put in the super mixer, continued under room temperature state, to mix 5min.
E: mixed raw materials in the steps d is put in the loading hopper of twin screw extruder, through melt extruding granulation; Its processing condition are: 230 ℃ of twin screw extruder one district's temperature, and 230 ℃ of two district's temperature, 230 ℃ of three district's temperature, 230 ℃ of four district's temperature, 220 ℃ of heads, engine speed are 450 rev/mins, pressure is 18MPa.
Embodiment 4, and a kind of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material is processed by the raw material of following parts by weight: 40.0 parts of modified polylactic resin; 20.0 parts of bisphenol A polycarbonate resins; 16.2 parts of poly butylene succinates; 1.5 parts of Di Cumyl Peroxide 99s; 0.5 part of white oil; PX-20018 part; 2 parts in silicone powder; 0.8 part of ethylene bis stearic acid amide; Four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3 part of pentaerythritol ester, 0.2 part of tricresyl phosphite (2, the 4-di-tert-butyl) ester; 0.3 part of hydrolysis inhibitor (ADR-4370), 0.2 part of uv-absorbing agent (UV-5411).
The preparation method repeats no more at this with embodiment 1.
Embodiment 5, and a kind of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material is processed by the raw material of following parts by weight: 30 parts of modified polylactic resin; 35 parts of bisphenol A polycarbonate resins; 22 parts of polyethylene glycol adipates; 1.5 parts of maleic anhydrides; 0.5 part of white oil; 12 parts of melamine cyanurates; 1 part in silicone powder; 0.8 part of amine hydroxybenzene; Four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3 part of pentaerythritol ester, 0.2 part of tricresyl phosphite (2, the 4-di-tert-butyl) ester; 0.3 part of hydrolysis inhibitor (quicklime), 0.2 part of uv-absorbing agent (UV-3346).
The preparation method repeats no more at this with embodiment 1.
Embodiment 6, and a kind of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material is processed by the raw material of following parts by weight: 40.0 parts of modified polylactic resin; 20.0 parts of bisphenol A polycarbonate resins; 15 parts of polycaprolactones; 43701.5 parts of ADR; 0.5 part of white oil; PX-20018 part; 2 parts of melamine cyanurates; 0.4 part of mustard acid amides; Four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3 part of pentaerythritol ester, 0.2 part of tricresyl phosphite (2, the 4-di-tert-butyl) ester; 0.2 part of hydrolysis inhibitor (quicklime), 0.3 part of uv-absorbing agent (UV-3346).
The preparation method repeats no more at this with embodiment 1.
Embodiment 7, and a kind of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material is processed by the raw material of following parts by weight: 37.0 parts of modified polylactic resin; 30.0 parts of bisphenol A polycarbonate resins; 23 parts of poly adipate succinic acid esters; 0.4 part of isocyanic ester MDI; 0.2 part of white oil; PX-2003 part; 6 parts of trimeric cyanamides; 0.7 part of mustard acid amides; Four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.25 part of pentaerythritol ester, 0.2 part of tricresyl phosphite (2, the 4-di-tert-butyl) ester; 0.3 part of hydrolysis inhibitor (ADR-4370), 0.2 part of uv-absorbing agent (UV-5411).
The preparation method repeats no more at this with embodiment 1.
Performance test:
Tensile strength is tested by ASTM D-638 standard.Batten size (mm): 165 (length) * 19 (end width) * 3.05 (thickness), draw speed is 50mm/min;
Flexural strength and modulus in flexure are tested by standard A STM D-790.Specimen size (mm): 127 * 12.67 * 3.67, span is 48, rate of bending is 20mm/min;
Notched Izod impact strength is tested by ASTM D-256 standard.Specimen size (mm): 63.5 * 12.45 * 3.1; The breach residual thickness is 1.9mm;
Heat-drawn wire is tested by ASTM-648.Specimen size (mm): 128 * 13 * 6.4, maximum deformation quantity is 0.25;
Fire-retardantly test vertical combustion by the UL-94 standard.Specimen size (mm): 127 * 13 * 2.86,1.67,0.8.
Embodiment 1~4 prescription and material property are seen table 1:
Table 1 embodiment 1~4 raw material and detected result table thereof
Form Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4
Modification PLA 37.6 32.7 25.0 40.0
PC 45.0 28.0 35.9 20.0
PBS 10.0 25.0 20.0 16.2
White oil 0.1 0.2 0.4 0.5
DCP 0.5 2 1 1.5
EBS 1 0.1 0.5 0.8
PX-200 4.9 10 15 18
The silicone powder 0.1 1 1.5 2
1010 0.2 0.1 0.3 0.3
168 0.1 0.1 0.3 0.2
Other auxiliary agent 1 0.8 0.1 0.5
Notched Izod impact strength (KJ/m 2) 45 60 53 50
Tensile strength (MPa) 58 45 51 53
Elongation at break (%) 75 120 92 83
Flexural strength (MPa) 76 63 71 73
Modulus in flexure (MPa) 2262 1980 2510 2388
Heat-drawn wire (0.45MPa/ ℃) 90 78 82 75
Flame retardant properties (thickness 1.67) HB V0 V0 V0
Can find out that from last table phosphorus system and silicon are the flame retardant properties that compound flame retardant can effectively improve material; Increase with the ratio of PC resin in the system, the physical and mechanical property of material changes little, but thermal property especially thermotolerance increase obviously; Ratio with PBS resin in the system increases, and the toughness of material is obviously improved raising.
More than a kind of heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material provided by the present invention has been carried out detailed introduction; And can find out resulting product each item excellent property of the present invention by table 1; Can be used as engineering plastics and be used for multiple field, like OA equipment, information, communication equipment; Automotive material, fields such as material of construction and household electrical appliance.

Claims (1)

1. a heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material is characterized in that, is processed by the raw material of following parts by weight:
Modified polylactic resin 25 ~ 40;
Aromatic polycarbonate resin 20 ~ 45;
Aliphatic polyester resin 10 ~ 25;
Linking agent 0.5 ~ 2;
Halogen-free flame retardants 5 ~ 20;
White oil 0.1 ~ 0.5;
Dispersion agent 0.1 ~ 1;
Oxidation inhibitor 0.2 ~ 0.6;
Processing aid 0.1 ~ 1;
Said modified polylactic resin is the poly (l-lactic acid) resin of capacity increasing modifying, and its molecular weight is 30000-200000;
Said aliphatic polyester is to be selected from poly butylene succinate, polyethylene glycol adipate, polyethylene glycol succinate, polycaprolactone, the poly adipate succinic acid ester any;
Said dispersion agent is any in amine hydroxybenzene, stearic amide, the mustard acid amides.
2. heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material as claimed in claim 1 is characterized in that: said aromatic copolycarbonate is a bisphenol A polycarbonate.
3. heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material as claimed in claim 1 is characterized in that: said linking agent is at least a in organo-peroxide, acid anhydrides, epoxy compounds and the isocyanic ester; Said halogen-free flame retardants is the mixture of at least two kinds of composite formation in phosphorus flame retardant, nitrogen flame retardant, the silicon-series five-retardant; Said oxidation inhibitor is the composite mixture of four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters and tricresyl phosphite (2,4-di-t-butyl phenyl ester).
4. heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material as claimed in claim 1 is characterized in that: said processing aid is at least a in hydrolysis inhibitor, the UV light absorber.
5. the preparation method of the described heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material of claim 1 is characterized in that, may further comprise the steps:
A: earlier with modified polylactic resin dry 3-4 hour of 45 ℃ of vacuum drying ovens;
B: modified polylactic resin, the white oil that will pass through drying treatment mix in super mixer;
C: linking agent and dispersion agent are mixed in super mixer;
D: mixed raw materials among aromatic polycarbonate resin, aliphatic polyester resin, halogen-free flame retardants, oxidation inhibitor, processing aid and step b and the step c is continued to be mixed to evenly;
E: mixed raw materials in the steps d is put in the loading hopper of twin screw extruder, through melt extruding granulation; Its processing condition are: twin screw extruder one district temperature 200-230 ℃, two district temperature 200-230 ℃, three district temperature 200-230 ℃, four district temperature 200-230 ℃, head 200-220 ℃, engine speed is 450 rev/mins, and pressure is 12-18MPa.
CN200910105326XA 2009-02-06 2009-02-06 Heat-resistant halogen-free flame-retardant polylactic acid multi-element composite material and preparation method thereof Expired - Fee Related CN101787185B (en)

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CN102399423B (en) * 2010-09-14 2013-06-12 允友成有限公司 Functional resin composition
CN102936403A (en) * 2011-08-15 2013-02-20 上海金发科技发展有限公司 Halogen-free flame-retardant polycarbonate composition and preparation method thereof
CN102627842B (en) * 2012-04-19 2013-04-24 张家港柴能生物科技有限公司 Preparation method of halogen-free and flame-retardant polylactic acid composite material
CN102838859A (en) * 2012-09-28 2012-12-26 江苏嘉铂新材料有限公司 Nanometer bentonite composite flame-retardant polylactic acid bioplastics and preparation method thereof
CN103146161B (en) * 2013-03-29 2015-08-05 浙江海正生物材料股份有限公司 A kind of modified polylactic resin composition and method of making the same and application
CN104387732A (en) * 2014-11-13 2015-03-04 中国科学院长春应用化学研究所 Transparent, tear-resistant and biodegradable polylactic acid thin film and preparation method thereof
CN107189368B (en) * 2017-06-13 2020-07-07 浙江金彩新材料有限公司 High-heat-resistance weather-resistance polyester fiber master batch and preparation method thereof
CN108164948A (en) * 2018-01-19 2018-06-15 战国昌 A kind of new energy soil matrix blown film material and production technology
CN109306161A (en) * 2018-08-14 2019-02-05 太仓金凯特新材料科技有限公司 A kind of preparation method of high performance heat resistant high molecular material
CN111378267A (en) * 2018-12-28 2020-07-07 汉达精密电子(昆山)有限公司 Halogen-free flame-retardant PC/PLA composite material and product thereof

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