CN102153820B - Preparation method of flame retarding styrene polymer composite material - Google Patents
Preparation method of flame retarding styrene polymer composite material Download PDFInfo
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- CN102153820B CN102153820B CN2011100682100A CN201110068210A CN102153820B CN 102153820 B CN102153820 B CN 102153820B CN 2011100682100 A CN2011100682100 A CN 2011100682100A CN 201110068210 A CN201110068210 A CN 201110068210A CN 102153820 B CN102153820 B CN 102153820B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion 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
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means 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
- B29C48/40—Means 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a preparation method of a flame retarding styrene polymer composite material. The raw materials of the composite material (weight) includes 100 parts of recovered styrene polymer, 10-30 parts of flame retardant, 1-5 parts of smoke inhibitor and 5-30 parts of intensifier. The preparation method includes the following steps: 1. stirring the intensifier in a high speed mixing machine to have the water content of 1-2% at the temperature of 105-150 DEG C and at the revolving speed of 600-1000r/min; 2. crushing the recovered styrene polymer product in a high speed crushing machine and then adding the crushed product in a double-screw machine to be extruded and pelletized; 3. sequentially adding the pellet, dry wood powder, flame retardant and smoke inhibitor in the high speed mixing machine for 5-10 min of premixing, and then discharging the mixture to a low speed cold mixing machine for 5-10 min of mixing to obtain premix; and 4. melting down the premix through the double-screw machine until or single-screw machine for pelleting to obtain the flame retarding styrene polymer composite material.
Description
Technical field
The present invention relates to composite technology, be specially a kind of preparation method of flame-resistant vinyl benzene polymer matrix material.It is that raw material prepares that this preparation method adopts the styrene polymer of recovery fully.
Background technology
Vinylbenzene is a kind of important synthon as the derived product of oil;, have the good transparency, dimensional stability, electrical insulation capability, processing characteristics and cheap price and be widely used in household electrical appliance, office equipment, instrument, automobile component, household utensils and wrapping material etc. through homopolymerization or copolyreaction synthetic styrenic polymer by it.Polystyrene foamed has insulation, heat insulation performance and in the insulation of building trade, lagging material, is able to widespread use.Yet because petroleum resources non-renewable, and the minimizing day by day of world oil margin, the conscious recycling that has the styrenic macromolecular material now not only meets social orientation, and is a far-reaching great engineering.
Though styrenic polymer has numerous premium propertiess; Yet the critical defect of this base polymer is inflammable, and the fusion drip phenomenon is serious in the combustion processes; And discharge a large amount of black smokes, therefore to its carry out fire-retardant, pressing down cigarette, to handle to improve the security of using be very necessary.
Document descriptions such as Chinese patent CN101353461, CN101353462, CN101353463, CN101704982A and CN101747575A Flameproof styrenic and mixture or preparation of compositions method; Mostly used fire retardant is halogen containing flame-retardant; Mainly be bromide fire retardant, also used fire retarding synergist or retardant synergist.Though above-mentioned flame-retardant styrene polymer compound or compsn have obtained flame retardant effect preferably; But because the fire retardant that adopts is a halogenated flame retardant; Especially bromide fire retardant; This based flame retardant can discharge poisonous and corrosive hydrogen halide in the combustion decomposition process, especially the polybromodiphenyl ether based flame retardant can produce carcinogenic dioxin, makes the America and Europe limit its application.Even some bromide fire retardants can not produce carcinogenic De dioxin, but still can discharge corrosive hydrogen halide in its decomposition course, in case presence of fire brings great difficulty will for personnel's evacuation and rescue operation.The addition of the fire retardant that above-mentioned patent adopted is generally bigger simultaneously, has a strong impact on original performance of styrenic polymer, and the use of halogenated flame retardant can cause prepared styrenic polymer light fastness variation, the fragility increase.
Chinese patent CN101062992 adopts halogen-free flame retardants ammonium polyphosphate pentaerythritol ester and carbon forming agent to gather 2; 6-dimethyl--1; The 4-phenyl ether prepares halogen-free flame-proof highly anti-flush polyphenylacetylene composition; Though flame retarding efficiency is higher, the fire retardant addition is bigger, can have a negative impact equally to the compsn over-all properties.
Summary of the invention
To the deficiency of prior art, the technical problem that quasi-solution of the present invention is determined provides a kind of preparation method of flame-retardant styrene polymer compound matrix material; This preparation method utilizes the styrenic polymer of recovery to prepare flame-retardant styrene polymer compound matrix material for raw material fully; Have environmental protection, resource recycling, low-carbon emission, meet the requirement of developing a circular economy and building a conservation-minded society, and it is simple to have production technique, cost is lower; Production efficiency is high, is suitable for characteristics such as industrializing implementation.
The technical scheme that the present invention solves said preparing method's technical problem is; Design a kind of preparation method of flame-retardant styrene polymer compound matrix material; The raw material of said matrix material is formed the recovery styrene polymer that comprises 100 weight parts, the fire retardant of 10～30 weight parts, the toughener that presses down fumicants and 5～30 weight parts of 1～5 weight part; Its preparation method technological process is: (1) is under the condition of 600～1000r/min at 105～150 ℃, rotating speed, and in high-speed mixer, stirring toughener to water ratio is 1～2%; (2) will reclaim the poly styrene polymer goods and in high speed disintegrator, pulverize after, join extruding pelletization in the twin screw extruder; (3) the PS pellet that will make, exsiccant wood powder, fire retardant and press down fumicants and join successively in the high mixer, premix 5～10min, in discharging to the low speed cold mixer, remix 5～10min obtains Preblend then; (4) with Preblend through twin screw extruder group or single screw extrusion machine fusion, mixing, extrude, cooling, pelletizing and drying, promptly obtain the pellet of flame-resistant vinyl benzene polymer matrix material; The Heating temperature that said screw extruder barrel is four sections is controlled at 120～140 ℃, 140～160 ℃, 160～170 ℃ and 170～180 ℃ respectively, and die temperature is controlled at 170 ℃～200 ℃.
Compare with existing fire retardant polystyrene and/or styrenic polymer technology of preparing, the present invention has the following advantages: 1. adopt the styrenic polymer that reclaims fully, realized the resource circulation utilization, meet the policy of national recycling economy; 2. adopt halogen-free flame retardants to carry out fire-retardant finish, make prepared flame-retardant styrene polymer compound matrix material non-halogen hydrogen in the burning dispose procedure discharge, have the characteristics of environmental protection reclaiming styrenic polymer; Make full use of fire retardant, fire retarding synergist simultaneously and press down the synergy between fumicants, make the fire retardant addition few, good flame retardation effect; 3. adopt the cellulose materials that to degrade fully, raw material sources are extremely abundant as toughener; In the shock resistance that improves prepared flame-retardant styrene polymer compound matrix material greatly; Has degradable characteristic again; Can realize the recycling once more of resource, greatly reduce production cost, help promoting the use of of flame-proof composite material; 4. production technique is simple, and production efficiency is high, does not pollute, and is suitable for industrializing implementation.
Embodiment
Further narrate the present invention below in conjunction with embodiment.
The preparation method (abbreviation preparation method) of the flame-retardant styrene polymer compound matrix material (abbreviation matrix material) of the present invention's design; The raw material of said matrix material is formed the recovery styrene polymer that comprises 100 weight parts, the fire retardant of 10～30 weight parts, the toughener that presses down fumicants and 5～30 weight parts of 1～5 weight part; Its technological process is: (1) is under the condition of 600～1000r/min at 105～150 ℃, rotating speed, and in high-speed mixer, stirring toughener to water ratio is 1～2%; (2) will reclaim the poly styrene polymer goods and in high speed disintegrator, pulverize after, join extruding pelletization in the twin screw extruder; (3) the PS pellet that will make, exsiccant wood powder, fire retardant and press down fumicants and join successively in the high mixer, premix 5～10min, in discharging to the low speed cold mixer, remix 5～10min obtains Preblend then; (4) with Preblend through twin screw extruder group or single screw extrusion machine fusion, mixing, extrude, cooling, pelletizing and drying, promptly obtain the pellet of flame-resistant vinyl benzene polymer matrix material; The Heating temperature that said screw extruder barrel is four sections is controlled at 120～140 ℃, 140～160 ℃, 160～170 ℃ and 170～180 ℃ respectively, and die temperature is controlled at 170 ℃～200 ℃.
At least a in the high-impact polystyrene (HIPS), styrene-butadiene-styrene multipolymer (SBS), acrylonitrile-butadiene-styrene copolymer (ABS), acrylonitritrile-styrene resin (AS), MBS (MBS), styrene-isoprene-phenylethene (SIS) or the polystyrene foamed that reclaim of said styrene polymer; When adopting two or more mixing, blending ratio is any, and the add-on of styrene polymer is 100 parts;
Said fire retardant is a halogen-free flame retardants; Comprise N; N '-two (5; 5-dimethyl--2-phospha-2-sulfo--1,3-diox-2-yl) at least a in quadrol, ammonium polyphosphate, silane coated ammonium polyphosphate, trimeric cyanamide, melamine phosphoric acid salt, melamine pyrophosphate salt, tetramethylolmethane, NSC 65881, nano silicon, polynite, zeyssatite, molecular sieve, kaolin, sepiolite, carbon nanotube, nano layered silicate or the expanded polystyrene veneer graphite; Adopt two or morely when composite, blending ratio is any, and the addition of fire retardant is 10～30 parts;
But said fumicants is ammonium octamolybdate, zinc molybdate, calcium molybdate, cobalt molybdate, molybdic oxide phospho-molybdic acid calcium, phospho-molybdic acid zinc, zinc borate, zinc or zinc hydroxyl stannate. the addition that presses down fumicants is 1～5 part;
Said toughener or strongthener are wood powder, bamboo powder, wheat stalk powder, corn stalk powder, wheat bran or rice chaff, and the particle diameter of toughener is 20～200 orders, and addition is 5～30 parts.The preferred wood powder of said toughener.
Preparing method's of the present invention further characteristic is; During forming, raw material also is added with the fire retarding synergist of 0.5～3 weight part; Said fire retarding synergist is at least a in tindioxide, zinc oxide, Manganse Dioxide, titanium oxide or the bismuth oxide; When adopting two or more mixing, the blending ratio arbitrary combination.The adding method of fire retarding synergist is, when (3) step of technological process, with the PS pellet of making, exsiccant wood powder, fire retardant, fire retarding synergist with press down fumicants and join in the high mixer successively.The adding fire retarding synergist helps further to improve the usefulness of flame-retardant composition.
In order to reduce the second-order transition temperature that reclaims the PS superpolymer; Improve resin flow property; Improve mixed effect and processing characteristics; Preparing method's of the present invention further characteristic is; During forming, raw material also is added with the modification softening agent of 5～20 weight parts; Said modification softening agent is at least a in dicyclohexyl phthalate (CCHP), n-butyl phthalate (DBP), phthalic acid mixed ester (610 ester), butyl phthalic acid glycolic acid butyl ester (BPBG), dioctyl isophthalate (DOIP), dioctyl azelate (DOZ), dioctyl sebacate (DOS) or the Tritolyl Phosphate (TCP), when adopting two or more mixing, and the blending ratio arbitrary combination.The adding method of modification softening agent is when (2) step of technological process, the modification softening agent to be joined granulation in the twin screw extruder together with the recovery PS that crushes.
Preferred 130 ℃, 150 ℃, 165 ℃ and 170 ℃ respectively of the Heating temperatures that the said screw extruder barrel of preparation method of the present invention is four sections, preferred 180 ℃ of die temperature.
Adopt the flame-resistant vinyl benzene polymer matrix material pellet of preparing method's gained of the present invention, according to the goods designing requirement, adopt extrude, the processing mode of injection moulding or mold pressing, promptly can be made into the flame-resistant vinyl benzene polymer composite product.
The present invention does not address the technology that has that part is applicable to.
Provide specific embodiment of the present invention below.Application claim protection domain of the present invention does not receive the restriction of these specific embodiments.
Embodiment 1
The preparation raw material of present embodiment matrix material comprises: 100 weight parts (down together) reclaim polystyrene material; 5 part of 20 order toughener wood powder; 5 parts of modification plasticizer phthalic acid two cyclohexyls (CCHP); 10 parts of fire retardants specifically are by 6 parts of expanded graphites, 2 parts of ammonium polyphosphates and 2 parts of composite forming of red phosphorus, and 1 part of ammonium octamolybdate presses down fumicants.Preparing method's step is following: (1) is under the condition of 800r/min at 120 ℃, rotating speed, in high-speed mixer, stirs wood powder, to water ratio be 1%; (2) will reclaim PS (goods) and in press, carry out the physics deaeration, and again bulk PS (goods) material behind the froth breaking joined in the high speed disintegrator and pulverizes, join extruding pelletization in the twin screw extruder then; (3) the PS pellet that will make, plasticization modifier, fire retardant and press down fumicants join successively in the high-speed mixer with the good wood powder mixing 5min of drying after, in discharging to the low speed cold mixer, remix 5min obtains Preblend; (4) Preblend is promptly got by the design requirements extrusion moulding through the twin screw extruder group.In the course of processing, the Heating temperature that screw extruder barrel is four sections is controlled at 130 ℃, 150 ℃, 165 ℃ and 170 ℃ respectively, and die temperature is controlled at 180 ℃.
Embodiment 2
Present embodiment and embodiment 1 are not both: strongthener is 5 part of 200 order wood powder, and fire retardant comprises 6 parts of ammonium polyphosphates, 2 parts of tetramethylolmethanes and 2 parts of trimeric cyanamides, and other is identical with embodiment 1.
Embodiment 3
Present embodiment and embodiment 1 are not both: strongthener is 5 part of 20 order bamboo powder, and the modification softening agent is dioctyl isophthalate (DOIP), and pressing down fumicants is 2 parts of ammonium octamolybdates, and other is identical with embodiment 1.
Embodiment 4
Present embodiment and embodiment 1 are not both: strongthener is 5 part of 40 order wheat bran; Plasticization modifier is 20 parts of dioctyl isophthalates (DOIP), and pressing down fumicants is 2 parts of calcium molybdates, and fire retardant is 30 parts of silane coated ammonium polyphosphates.In addition, processing temperature and mold pressing parameter have small adjustment, and other is identical with embodiment 1.
Embodiment 5
Present embodiment and embodiment 1 are not both: strongthener is 5 part of 40 order wood powder; Plasticization modifier is 20 parts of dicyclohexyl phthalates (CCHP), and fire retardant is by 18 parts ammonium polyphosphate, 6 parts of tetramethylolmethanes and 6 parts of composite expanding fire retardants that form of trimeric cyanamide.In addition, processing temperature and mold pressing parameter have small adjustment, and other is identical with embodiment 1.
Embodiment 6
Present embodiment and embodiment 1 are not both: strongthener is 10 part of 80 order wood powder; Softening agent is 15 parts of dicyclohexyl phthalates (CCHP); Pressing down fumicants is 3 parts of ammonium octamolybdates, and fire retardant is by 12 parts of expanded graphites, 4 parts of ammonium polyphosphates and 4 parts of composite fire retardants that form of red phosphorus.In addition, processing temperature and mold pressing parameter have small adjustment, and other is identical with embodiment 1.
Embodiment 7
Present embodiment and embodiment 6 are not both: pressing down fumicants is 5 parts of calcium molybdates, and fire retardant is by 12 parts ammonium polyphosphate, 4 parts of tetramethylolmethanes and 4 parts of composite expanding fire retardants that form of trimeric cyanamide.Other is identical with embodiment 6.
Embodiment 8
Present embodiment and embodiment 6 are not both: strongthener is 20 part of 80 order wood powder; Softening agent is 10 parts of dicyclohexyl phthalates (CCHP), and fire retardant is by 9 parts ammonium polyphosphate, 3 parts of tetramethylolmethanes, 3 parts of trimeric cyanamides and 2 parts of composite fire retardants that form of expanded graphite, and pressing down fumicants is 2 parts of ammonium octamolybdates, fire retarding synergist is 3 parts of bismuth oxides.In addition, processing temperature and mold pressing parameter have small adjustment, and other is identical with embodiment 6.
Embodiment 9
Present embodiment and embodiment 8 are not both: add fire retarding synergist tindioxide 2.5 weight parts.Other is identical with embodiment 8.
Embodiment 10
Present embodiment and embodiment 8 are not both: add fire retarding synergist zinc oxide 2 weight parts.Other and embodiment, 8 is identical.
Embodiment 11
Present embodiment and embodiment 8 are not both: add fire retarding synergist titanium oxide 1 weight part.Other is identical with embodiment 8.
Embodiment 12
Present embodiment and embodiment 8 are not both: add fire retarding synergist Manganse Dioxide 0.5 weight part.Other is identical with embodiment 8.
Embodiment 13
Present embodiment and embodiment 8 are not both: strongthener is 30 part of 80 order wood powder, adds 1 part of bismuth oxide of fire retarding synergist and 2 parts of zinc oxide.Other is identical with embodiment 8.
Embodiment 14
Present embodiment and embodiment 8 are not both: strongthener is 30 part of 80 order wood powder, adds 1 part of bismuth oxide of fire retarding synergist and 2 parts of tindioxide.Other is identical with embodiment 8.
Take by weighing each component according to embodiment raw material compositing formula (referring to table 1).Each embodiment except that the kind of additive in the table 1 with addition is different, the preparation processing conditions is identical.
Table 1 preparation method embodiment matrix material of the present invention raw material compositing formula
The matrix material appearance material that each embodiment of preparation method of the present invention makes, (1. Mechanics Performance Testing: the stretching of matrix material of the present invention, bending, impact property are carried out according to GB/T 1040-92, GB/T 9341-2000 and GB/T 1043-93 standard respectively according to relevant mechanical property and the standard testing of flame retardant properties; 2. flame retardant properties test: the fire-retardant performance of matrix material of the present invention is carried out limiting oxygen index determination according to GB/T 2406-93 standard, carries out the vertical combustion experiment according to GB/T 4609-96 standard), promptly obtain the relevant parameter (referring to table 2) of this kind material.
Table 2 performance of composites parameter list
Performance perameter through specific embodiment can find out, the matrix material that preparation method of the present invention makes has all reached relevant national standard, and its mechanical property and flame retardant properties are good.Reduce (mechanical property of the PS goods of non-recovery is treated as a constant) though its tensile property and impact property are slightly done some, bending property is greatly improved; Simultaneously, because the adding of suitable fire retardant and fire retarding synergist, the oxygen index of material has all had bigger lifting with the burning remaining carbon; The more important thing is that PS discharges the dark smoke mist in combustion processes phenomenon has obtained good solution, smoke density reduces greatly.Realize the target of fire protection flame retarding, environmental protection, low-carbon economy, resource circulation utilization.
Claims (5)
1. the preparation method of a flame-retardant styrene polymer compound matrix material; The raw material of said matrix material is formed the recovery styrene polymer that comprises 100 weight parts, the fire retardant of 10～30 weight parts, the toughener that presses down fumicants and 5～30 weight parts of 1～5 weight part; Described toughener is wood powder, bamboo powder, wheat stalk powder, corn stalk powder, wheat bran or rice chaff; The particle diameter of toughener is 20～200 orders; Its preparation method technological process is: (1) is under the condition of 600～1000r/min at 105～150 ℃, rotating speed, and in high-speed mixer, stirring toughener to water ratio is 1～2%; (2) will reclaim the poly styrene polymer goods and in high speed disintegrator, pulverize after, join extruding pelletization in the twin screw extruder; (3) the PS pellet that will make, exsiccant toughener, fire retardant and press down fumicants and join successively in the high mixer, premix 5～10min, in discharging to the low speed cold mixer, remix 5～10min obtains Preblend then; (4) with Preblend through twin screw extruder group or single screw extrusion machine fusion, mixing, extrude, cooling, pelletizing and drying, promptly obtain the pellet of flame-resistant vinyl benzene polymer matrix material; The Heating temperature that said screw extruder barrel is four sections is controlled at 120～140 ℃, 140～160 ℃, 160～170 ℃ and 170～180 ℃ respectively, and die temperature is controlled at 170 ℃～200 ℃.
2. according to the preparation method of the said flame-retardant styrene polymer compound of claim 1 matrix material; During forming, the raw material that it is characterized in that said matrix material also is added with the fire retarding synergist of 0.1～3 weight part; Said fire retarding synergist is at least a in tindioxide, zinc oxide, Manganse Dioxide, titanium oxide or the bismuth oxide; When adopting two or more mixing, the blending ratio arbitrary combination; The adding method of fire retarding synergist is, when (3) step of said technological process, with the PS pellet of making, exsiccant toughener, fire retardant, fire retarding synergist with press down fumicants and join in the high mixer successively.
3. according to the preparation method of the said flame-retardant styrene polymer compound of claim 1 matrix material; During forming, the raw material that it is characterized in that said matrix material also is added with the modification softening agent of 5～20 weight parts; Said modification softening agent is at least a in dicyclohexyl phthalate, n-butyl phthalate, phthalic acid mixed ester, butyl phthalic acid glycolic acid butyl ester, dioctyl isophthalate, dioctyl azelate, dioctyl sebacate or the Tritolyl Phosphate; When adopting two or more mixing, the blending ratio arbitrary combination; The adding method of modification softening agent is when (2) step of said technological process, the modification softening agent to be joined granulation in the twin screw extruder together with the recovery PS that crushes.
4. according to the preparation method of the said flame-retardant styrene polymer compound of claim 1 matrix material, it is characterized in that the Heating temperature of four sections of said screw extruder barrels is respectively 130 ℃, 150 ℃, 165 ℃ and 170 ℃, die temperature is 180 ℃.
5. the pellet of each resulting flame-resistant vinyl benzene polymer matrix material of claim 1-4, according to the goods designing requirement, adopt extrude, the processing mode of injection moulding or mold pressing, process the flame-resistant vinyl benzene polymer composite product.
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| CN2011100682100A CN102153820B (en) | 2011-03-22 | 2011-03-22 | Preparation method of flame retarding styrene polymer composite material |
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| CN2011100682100A CN102153820B (en) | 2011-03-22 | 2011-03-22 | Preparation method of flame retarding styrene polymer composite material |
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| CN102383211B (en) * | 2011-08-30 | 2013-12-25 | 成都丽雅纤维股份有限公司 | Production technology of environmentally friendly composite flame-retardant viscose |
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| CN101570639A (en) * | 2009-06-10 | 2009-11-04 | 东北林业大学 | Flame-retardant wood-plastic composite and preparation method thereof |
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| US20030032702A1 (en) * | 1997-09-02 | 2003-02-13 | Marshall Medoff | Compositions and composites of cellulosic and lignocellulosic materials and resins, and methods of making the same |
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