CN101787174A - Low-L value inflaming retarding ABS modified resin and preparation method thereof - Google Patents
Low-L value inflaming retarding ABS modified resin and preparation method thereof Download PDFInfo
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- CN101787174A CN101787174A CN200910198336A CN200910198336A CN101787174A CN 101787174 A CN101787174 A CN 101787174A CN 200910198336 A CN200910198336 A CN 200910198336A CN 200910198336 A CN200910198336 A CN 200910198336A CN 101787174 A CN101787174 A CN 101787174A
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Abstract
The invention relates to a low-L value (less than 27) inflaming retarding ABS modified resin and a preparation method thereof. The resin comprises the components with the content (based on parts by weight): 100 parts of ABS resin, 10-25 parts of brominated flame retardant, 20-40 parts of inorganic inflaming retarding master batch, 0.1-0.5 part of anti-dripping agent, 0.2-1 part of antioxidant, 0.1-0.5 part of light stabilizer, 1-3 parts of lubricating agent and 1-4 parts of black master batch. Compared with the prior art, the invention has reasonable technique, overcomes the defect of high L value (namely, low degree of blackness) of the existing inflaming retarding ABS resin, and adopts the novel high-efficiency inflaming retarding synergistic effect technology. The invention leads the resin has higher degree of blackness by reasonably selecting the grain diameter of antimony trioxide, a carbon black lubricating dispersion system and the processing technique of a master batch method on the basis of maintaining the excellent performance of the inflaming retarding ABS resin, and has wide application prospect in the field of the requirement of high degree of blackness.
Description
Technical field
The present invention relates to technical field of polymer materials, relate in particular to fire retardant modified ABS resin of low-L value and preparation method thereof.
Background technology
Acrylonitrile-butadiene-styrene copolymer resin (ABS), have excellent comprehensive rerum naturas such as high impact, high heat-resisting and low temperature resistant, resistance to chemical attack, electrical insulation capability, and have good processing characteristics, electroplate performance and high gloss outward appearance, be consumption maximum, purposes one of engineering plastics the most widely, be widely used in fields such as electronics, Communication Equipment, automotive industry, household electrical appliance, office equipment, electric product.
But the ABS resin oxygen index is 18.3-20 only, belongs to inflammable macromolecular material, when being used to have the products such as various electronic apparatuss of fire-retardant requirement, need carry out flame-retardant modified, to satisfy the service requirements of fire safety.
At present, the flame-retardant system that ABS is commonly used is halogenated flame retardant and antimonous oxide synergistic system, and these flame-retardant systems are given ABS excellent flame-retardant and comprehensive rerum natura.Antimonous oxide is commonly called as " stibium trioxide ", and refractive index reaches 2.1, thereby has very strong opacifying power; And the heavy addition of bromide fire retardant also can influence the background color of flame-proof ABS, so the blackness of flame-proof ABS is relatively low usually, and (the L value is to weigh the index of black, its value is low more, and blackness is high more), require higher panel at blackness, when product uses, just can not reach service requirements.When for example flame-proof ABS replaces black flame-retardant PC/ABS cheaply, tend to because blackness is low excessively, the too high appearance component that makes of L value does not reach requirement.
At present, the direct effective means of blackness that increases flame-proof ABS is the amount that increases black agglomerate, when but black agglomerate adds certain content to, not obvious to the contribution that the L value reduces, and a large amount of sooty addings, the meeting first mate influences the physicals of flame-proof ABS, increases the risk that flame-proof ABS glows, promote the migration and the bloom of wax class dispersion agent in the Masterbatch, but also can increase substantially the cost of flame-proof ABS.
Summary of the invention
Purpose of the present invention is exactly to provide fire retardant modified ABS resin of a kind of excellent performance, good flame retardation effect, low-L value (less than 27) and preparation method thereof for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of fire retardant modified ABS resin of low-L value is characterized in that, this resin comprises following component and content (weight part):
ABS resinoid 100;
Bromide fire retardant 10-25;
Inorganic fire-retarded master batch 20-40;
Anti-dripping agent 0.1-0.5;
Oxidation inhibitor 0.2-1;
Photostabilizer 0.1-0.5;
Lubricant 1-3;
Black agglomerate 1-4.
Described ABS resinoid is acrylonitrile-butadiene-styrene copolymer (ABS), acrylonitrile-butadiene-acrylate copolymer (ASA), MBS (MBS) or vinyl cyanide-terpolymer EP rubber-styrol copolymer (AES).
Described bromide fire retardant is a tetrabromo-bisphenol, TDE, three (bromophenyl) triazine (FR245), bromination epoxy, decabromodiphenyl oxide, hexabromocyclododecane, PHT4, hexabromobenzene, octabromodiphenyl ether, a kind of or several mixtures in the Brominated Polystyrene; Described inorganic fire-retarded master batch is to be carrier with the ABS resin, load Sb system fire retardant 5-30wt% and zinc borate 5-30wt%.
Described Sb system fire retardant is an antimonous oxide, a kind of in antimony peroxide or the sodium antimonate.
Described anti-dripping agent is that molecular weight is 3,000,000-5,000,000 polytetrafluoroethylene (PTFE).
Described oxidation inhibitor is the refine Irganox 1010 of company of CIBA, a kind of or several mixtures of Irganox 1076 or Irganox 168; Described photostabilizer is the 2-dihydroxy benaophenonel, salicylate class, phosphorous acid diphenyl ester, triphenyl phosphite, a kind of or several mixtures in the hydroxybenzotriazole; Described lubricant is a silicone oil, white mineral oil, fatty acid amide, barium stearate, Magnesium Stearate, paraffin, polyethylene wax or ethylene bis stearic acid amide, ethylene-vinyl acetate copolymer, a kind of or several mixtures in the ethylene-acrylic acid copolymer.
Described black agglomerate is for being carrier loaded sooty complex body with polyolefine or ethylene-vinyl acetate copolymer, and described content of carbon black is 20-60wt%, and described polyolefinic molecular weight is 2000-10000.
A kind of preparation method of fire retardant modified ABS resin of low-L value is characterized in that, this method may further comprise the steps:
(1) get the raw materials ready according to following component and content (weight part):
ABS resinoid 100;
Bromide fire retardant 10-25;
Inorganic fire-retarded master batch 20-40;
Anti-dripping agent 0.1-0.5;
Oxidation inhibitor 0.2-1;
Photostabilizer 0.1-0.5;
Lubricant 1-3;
Black agglomerate 1-4;
(2) using twin screw extruder, is raw material with Sb system fire retardant and zinc borate, and preparation is the inorganic fire-retarded master batch of carrier with the ABS resin;
(3) inorganic fire-retarded master batch and the ABS resinoid that step (2) is obtained, bromide fire retardant, anti-dripping agent, oxidation inhibitor, photostabilizer, lubricant, black agglomerate stir thorough mixing in high-speed mixer after, send in the twin screw extruder through measuring apparatus, conveying, shearing and mixing following at screw rod, material melting, compound, again through extrude, tie rod, cooling, pelletizing step, obtain the fire retardant modified ABS resin of low-L value.
The weight content of Sb system fire retardant and zinc borate is 5%-30% in the described inorganic fire-retarded master batch.
The screw slenderness ratio of described twin screw extruder is 40, and has temperature control unit and vacuum extractor; The extrusion temperature of described extrusion step is between 190-230 ℃, and screw speed is 100-300 rev/min.
The anti-dripping agent that the present invention selects for use is the high-molecular weight polytetrafluoroethylene PTFE, and shell is coated by acrylonitrile styrene resin (AS) (SAN), increases the dispersiveness of PTFE.And itself and the composite use of bromine antimony flame-retardant system have improved flame retarding efficiency greatly, thereby can reduce the consumption of fire retardant, reduce the opacifying power to color.
The present invention selects bromine content height (bromine content is greater than 60%) for use, and rerum natura is influenced little bromide fire retardant, thereby reduces the consumption of bromide fire retardant as much as possible, reduces the influence to color, as selects FR245 for use, decabromodiphenyl oxide etc.
It is 2-10 μ m that the present invention selects the particle diameter of Sb system fire retardant for use, rather than the particle diameter about 1 conventional μ m.Its purpose is to reduce to reduce the specific surface area of Sb system fire retardant, thereby reduces the opacifying power of color.Excessive particle diameter then can worsen the fire-retardant and impact property of ABS material.The zinc borate that adopts 3-8 μ m is as fire-retardant compound system, and on the one hand, the refractive index of zinc borate only is 1.58, and is less to the opacifying power of color; On the other hand, zinc borate can produce certain fire-retardant synergy with halogenated flame retardant, and flame retarding efficiency is higher.
The present invention adopts the master batch method complete processing of Sb system fire retardant and zinc borate, improves the dispersiveness of Sb system fire retardant and zinc borate, improves flame retarding efficiency.
The present invention selects excellent lubricated composite dispersion system for use, can effectively promote the dispersion of black agglomerate, strengthens its tinting strength.Color with polyethylene wax and polarity macromolecule wax compound system among the present invention is good, as polyethylene wax and ethylene-acrylic acid copolymer compound system, and polyethylene wax and ethylene-vinyl acetate copolymer compound system.
The present invention prepares the method for the flame-proof ABS resin of low-L value, adopts the twin screw extrusion technique device, and it is simple to have a technical process, continuously, the production efficiency height, characteristics such as constant product quality can be widely used in having the household electrical appliances of higher blackness requirement, industries such as automobile industry.
In sum, the innovation part of the fire retardant modified ABS resin of low-L value of the present invention is:
1. adopt the fire-retardant collaboration system of halogen-antimony-boron-PTFE efficiently, the complete processing of master batch method is guaranteeing to have reduced fire retardant on the basis of flame retardant resistance, the consumption of Sb system fire retardant especially, thus reduced its influence to blackness.
2. adopt the Sb system fire retardant of big particle diameter and the compound system of zinc borate, further reduced influence the flame-proof ABS blackness.
3. adopt carbon black dispersion lubricating system efficiently, increase its tinting strength greatly, thus the fire retardant modified ABS resin of the higher blackness of preparation.
Compared with prior art, technology of the present invention is reasonable, overcome existing flame-proof ABS blackness shortcoming on the low side relatively, adopted the fire-retardant collaboration system of halogen-antimony-boron-PTFE efficiently, the particle diameter of choose reasonable antimonous oxide, carbon black lubricates dispersion system, and the complete processing of master batch method, improving on the former premium properties of the ABS resin basis, give resin higher blackness, the L value is reached below 27, have broad prospect of application.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
The embodiment preparation method of following master batch method is as follows:
At first using prepared in twin-screw extruder is 3: 2 the inorganic fire-retarded master batch of 25% content with ABS as the ratio of the antimonous oxide of carrier and zinc borate, gets the raw materials ready according to the proportioning in the corresponding form then, and the component of getting ready stirs through high-speed mixer, uniform mixing; At last, the said mixture accurate measurement is sent in the forcing machine, in the shearing of twin screw, carried, mixing fully fusing is compound down, extrude through head again, and tie rod, pelletizing, drying is packaged as finished product at last.
The length-to-diameter ratio of twin screw extruder screw rod is 40, and front-end temperature is 180-190 ℃, and the stage casing temperature is 220-230 ℃, and the head extrusion temperature is 230 ℃, and screw speed is 100 rev/mins.
The fire retardant modified ABS resin of each embodiment and Comparative Examples preparation is injection molded into various standard Mechanics Performance Testing battens and colour table by the ASTM standard, and wherein the L value is used the test of COLOR-EYE 7000A spectrophotometer, and is as shown in table 1.
Table 1 physicals and testing method correspondence table
| Physicals | Testing method |
| Tensile strength (50mm/min) | ??ASTM?D638 |
| Flexural strength (3mm/min) | ??ASTM?D790 |
| Modulus in flexure (3mm/min) | ??ASTM?D790 |
| IZOD notched Izod impact strength (3.2mm) | ??ASTM?D256 |
| Incendivity (vertical combustion 1.6mm) | ??UL?94 |
| The L value |
Embodiment 1
Embodiment 1 comprises embodiment 1-1 and 1-2, and its prescription is as shown in table 2; The prescription of Comparative Examples 1,2,3 is also as shown in table 2;
In the table 2:
ABS resin is PA757, Taiwan CHIMEI company;
The bromination epoxy, bromine content 52%-55% opens and beautifies;
FR245, bromine content 67%, Shouguang, Shandong Wei Dong;
Antimonous oxide 1,0.8 μ m, the Hunan flash star;
Antimonous oxide 2,3.2 μ m, the Hunan flash star;
Zinc borate, 7 μ m, chemical industry is bored in east, Zibo;
Oxidation inhibitor is Irganox 1076, Ciba;
Photostabilizer is UVP, Ciba;
Anti-dripping agent is PTFE, Guangzhou entropy energy Polymer Company;
Lubricant EBS (ethylene bis stearic acid amide), commercially available;
Black agglomerate: content of carbon black is 50%, and polyethylene wax is carrier, and is commercially available.
The performance test of embodiment 1-1,1-2 and Comparative Examples 1,2,3 is as shown in table 3.
The formula table of table 2 embodiment 1-1,1-2 and Comparative Examples 1,2,3
| Embodiment 1-1 | Embodiment 1-2 | Comparative Examples 1 | Comparative Examples 2 | Comparative Examples 3 | |
| ??ABS | ??100 | ??100 | ??100 | ??100 | ??100 |
| The bromination epoxy | ??21 | ??/ | ??21 | ??20 | |
| ??FR245 | ??/ | ??20 | ??20 | ??/ | ??/ |
| Antimonous oxide 1 | ??/ | ??/ | ??7 | ??7 | ??7 |
| Antimonous oxide 2 | ??5 | ??5 | ??/ | ??/ | ??/ |
| Zinc borate | ??3 | ??3 | ??/ | ??/ | ??/ |
| ??Irganox?1076 | ??0.5 | ??0.5 | ??0.5 | ??0.5 | ??0.5 |
| ??UVP | ??0.3 | ??0.3 | ??0.3 | ??0.3 | ??0.3 |
| ??PTFE | ??0.3 | ??0.3 | ??0.3 | ??0.3 | ??0.3 |
| Black agglomerate | ??3 | ??3 | ??3 | ??3 | ??3 |
| ??EBS | ??1.0 | ??1.0 | ??1.0 | ??1.0 | ??1.0 |
The performance test table of table 3 embodiment 1-1,1-2 and Comparative Examples 1,2,3
| Embodiment 1-1 | Embodiment 1-2 | Comparative Examples 1 | Comparative Examples 2 | Comparative Examples 3 | |
| Tensile strength (MPa) | ??39 | ??41 | ??42 | ??41 | ??44 |
| Flexural strength (MPa) | ??52 | ??53 | ??54 | ??53 | ??53 |
| Modulus in flexure (MPa) | ??1910 | ??2050 | ??2080 | ??2020 | ??2040 |
| IZOD notched Izod impact strength (J/M) | ??135 | ??170 | ??190 | ??150 | ??155 |
| Flame retardant rating (1.6mm) | ??V-0 | ??V-0 | ??V-0 | ??V-0 | ??V-1 |
| The L value | ??27.6 | ??27.3 | ??28.2 | ??28.6 | ??28.3 |
Embodiment 2
Embodiment 2 comprises embodiment 2-1,2-2, and the prescription of itself and Comparative Examples 4 is as shown in table 4;
Raw and auxiliary material is with embodiment 1, but the preparation method is the two step master batch methods of the above, but not the one-step technology among the embodiment.Wherein inorganic fire-retarded master batch is the ABS carrier, and antimonous oxide 2 is respectively 15%, 10% with the content of zinc borate.
The performance test of embodiment 2-1,2-2 and Comparative Examples 4 is as shown in table 5.
The formula table of table 4 embodiment 2-1,2-2 and Comparative Examples 4
| Embodiment 2-1 | Embodiment 2-2 | Comparative Examples 4 | |
| ??ABS | ??78.5 | ??78.5 | ??100 |
| ??FR245 | ??20 | ??19 | ??19 |
| Inorganic fire-retarded master batch | ??30 | ??30 | ??/ |
| Antimonous oxide 2 | ??/ | ??/ | ??4.5 |
| Zinc borate | ??/ | ??/ | ??3 |
| ??Irganox?1076 | ??0.5 | ??0.5 | ??0.5 |
| ??UVP | ??0.3 | ??0.3 | ??0.3 |
| ??PTFE | ??0.3 | ??0.3 | ??0.3 |
| Black agglomerate | ??3 | ??3 | ??3 |
| ??EBS | ??1 | ??1 | ??1 |
The performance test table of table 5 embodiment 2-1,2-2,2-3 and Comparative Examples 4
| Embodiment 2-1 | Embodiment 2-2 | Comparative Examples 4 | |
| Tensile strength (MPa) | ??42 | ??42 | ??41 |
| Flexural strength (MPa) | ??53 | ??54 | ??52 |
| Modulus in flexure (MPa) | ??2060 | ??2080 | ??2050 |
| IZOD notched Izod impact strength (J/M) | ??175 | ??180 | ??172 |
| Flame retardant rating (1.6mm) | ??V-0 | ??V-0 | ??V-1 |
| The L value | ??27.1 | ??26.9 | ??27.1 |
Embodiment 3
Embodiment 3 comprises embodiment 3-1,3-2,3-3 and 3-4, and its prescription is as shown in table 6; Its preparation method such as embodiment 2.
Wherein:
Polyethylene wax, the Honeywell;
Oxidized polyethlene wax, the Honeywell;
Ethylene-vinyl acetate copolymer wax, the Honeywell;
Ethylene-acrylic acid copolymer wax; The Honeywell;
All the other supplementary materials are with embodiment 1.
The performance test of embodiment 3-1,3-2,3-3 and 3-4 is as shown in table 7.
The formula table of table 6 embodiment 3-1,3-2,3-3 and 3-4
| Embodiment 3-1 | Embodiment 3-2 | Embodiment 3-3 | Embodiment 3-4 | |
| ??ABS | ??78.5 | ??78.5 | ??78.5 | ??78.5 |
| ??FR245 | ??19 | ??19 | ??19 | ??19 |
| Inorganic fire-retarded master batch | ??30 | ??30 | ??30 | ??30 |
| ??Irganox?1076 | ??0.5 | ??0.5 | ??0.5 | ??0.5 |
| ??UVP | ??0.3 | ??0.3 | ??0.3 | ??0.3 |
| ??PTFE | ??0.3 | ??0.3 | ??0.3 | ??0.3 |
| Black agglomerate | ??3 | ??3 | ??3 | ??3 |
| Polyethylene wax | ??0.6 | ??0.4 | ??0.6 | ??/ |
| Oxidized polyethlene wax | ??/ | ??/ | ??/ | ??0.6 |
| Ethylene-vinyl acetate copolymer wax | ??0.2 | ??0.4 | ??/ | ??0.2 |
| Ethylene-acrylic acid copolymer wax | ??/ | ??/ | ??0.2 | ??/ |
The performance test table of table 7 embodiment 3-1,3-2,3-3 and 3-4
| Embodiment 3-1 | Embodiment 3-2 | Embodiment 3-3 | Embodiment 3-4 | |
| Tensile strength (MPa) | ??42 | ??42 | ??42 | ??42 |
| Flexural strength (MPa) | ??53 | ??52 | ??52 | ??53 |
| Modulus in flexure (MPa) | ??2060 | ??2045 | ??2060 | ??2075 |
| IZOD notched Izod impact strength (J/M) | ??182 | ??176 | ??190 | ??184 |
| Flame retardant rating (1.6mm) | ??V-0 | ??V-0 | ??V-0 | ??V-0 |
| The L value | ??26.2 | ??26.5 | ??26.4 | ??26.5 |
Embodiment 4-7
A kind of fire retardant modified ABS resin of low-L value comprises following component and content (weight part):
Table 8, the component of the fire retardant modified ABS resin of low-L value and content (weight part)
| Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | |
| ??ABS | ??100 | ??100 | ??100 | ??100 |
| Bromide fire retardant | Tetrabromo-bisphenol 10 | TDE 12 | Octabromodiphenyl ether 15 | Bromination epoxy 10/ hexabromobenzene 5/ PHT4 10 |
| Inorganic fire-retarded master batch | ??20 | ??30 | ??35 | ??40 |
| ??Irganox?168 | ??1 | ??0.8 | ??0.5 | ??0.2 |
| Photostabilizer | 2-dihydroxy benaophenonel 0.1 | Phosphorous acid diphenyl ester 0.3 | Triphenyl phosphite 0.4 | Hydroxybenzotriazole 0.5 |
| ??PTFE | ??0.5 | ??0.3 | ??0.2 | ??0.1 |
| Black agglomerate | ??4 | ??3 | ??3 | ??1 |
| Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | |
| Lubricant | Silicone oil 1/ paraffin 2 | White mineral oil 1.5 | Magnesium Stearate 2.5 | Fatty acid amide 1 |
Described inorganic fire-retarded master batch is to be carrier with the ABS resin, load Sb system fire retardant and zinc borate, and wherein the weight in inorganic fire-retarded master batch is 100%, the component of Sb system fire retardant and zinc borate and the weight percentage that accounts for inorganic fire-retarded master batch see Table 9; Black agglomerate is for being carrier loaded sooty complex body with polyolefine or ethylene-vinyl acetate copolymer, and described content of carbon black is 20-60wt%, and described polyolefinic molecular weight is 2000-10000.
Table 9
The preparation method of the fire retardant modified ABS resin of above-mentioned low-L value may further comprise the steps:
(1) get the raw materials ready according to last table 9 component and content:
(2) using twin screw extruder, is raw material with Sb system fire retardant and zinc borate, and preparation is the inorganic fire-retarded master batch of carrier with the ABS resin;
(3) inorganic fire-retarded master batch and the ABS resinoid that step (2) is obtained, bromide fire retardant, anti-dripping agent, oxidation inhibitor, photostabilizer, lubricant, black agglomerate stir thorough mixing in high-speed mixer after, send in the twin screw extruder through measuring apparatus, conveying, shearing and mixing following at screw rod, material melting, compound, again through extrude, tie rod, cooling, pelletizing step, obtain the fire retardant modified ABS resin of low-L value.
The screw slenderness ratio of described twin screw extruder is 40, and has temperature control unit and vacuum extractor; The extrusion temperature of described extrusion step is between 190-230 ℃, and screw speed is 100-300 rev/min.
Claims (10)
1. the fire retardant modified ABS resin of a low-L value is characterized in that, this resin comprises following component and content (weight part):
ABS resinoid 100;
Bromide fire retardant 10-25;
Inorganic fire-retarded master batch 20-40;
Anti-dripping agent 0.1-0.5;
Oxidation inhibitor 0.2-1;
Photostabilizer 0.1-0.5;
Lubricant 1-3;
Black agglomerate 1-4.
2. the fire retardant modified ABS resin of low-L value according to claim 1, it is characterized in that, described ABS resinoid is acrylonitrile-butadiene-styrene copolymer (ABS), acrylonitrile-butadiene-acrylate copolymer (ASA), MBS (MBS) or vinyl cyanide-terpolymer EP rubber-styrol copolymer (AES).
3. the fire retardant modified ABS resin of low-L value according to claim 1, it is characterized in that described bromide fire retardant is a tetrabromo-bisphenol, TDE, three (bromophenyl) triazine (FR245), the bromination epoxy, decabromodiphenyl oxide, hexabromocyclododecane, PHT4, hexabromobenzene, octabromodiphenyl ether, a kind of or several mixtures in the Brominated Polystyrene; Described inorganic fire-retarded master batch is to be carrier with the ABS resin, load Sb system fire retardant 5-30wt% and zinc borate 5-30wt%.
4. the fire retardant modified ABS resin of low-L value according to claim 3 is characterized in that, described Sb system fire retardant is an antimonous oxide, a kind of in antimony peroxide or the sodium antimonate.
5. the fire retardant modified ABS resin of low-L value according to claim 1 is characterized in that, described anti-dripping agent is that molecular weight is 3,000,000-5,000,000 polytetrafluoroethylene (PTFE).
6. the fire retardant modified ABS resin of low-L value according to claim 1 is characterized in that, described oxidation inhibitor is the refine Irganox 1010 of company of CIBA, a kind of or several mixtures of Irganox 1076 or Irganox 168; Described photostabilizer is the 2-dihydroxy benaophenonel, salicylate class, phosphorous acid diphenyl ester, triphenyl phosphite, a kind of or several mixtures in the hydroxybenzotriazole; Described lubricant is a silicone oil, white mineral oil, fatty acid amide, barium stearate, Magnesium Stearate, paraffin, polyethylene wax or ethylene bis stearic acid amide, ethylene-vinyl acetate copolymer, a kind of or several mixtures in the ethylene-acrylic acid copolymer.
7. the fire retardant modified ABS resin of low-L value according to claim 1, it is characterized in that, described black agglomerate is for being carrier loaded sooty complex body with polyolefine or ethylene-vinyl acetate copolymer, described content of carbon black is 20-60wt%, and described polyolefinic molecular weight is 2000-10000.
8. the preparation method of the fire retardant modified ABS resin of a low-L value as claimed in claim 1 is characterized in that, this method may further comprise the steps:
(1) get the raw materials ready according to following component and content (weight part):
ABS resinoid 100;
Bromide fire retardant 10-25;
Inorganic fire-retarded master batch 20-40;
Anti-dripping agent 0.1-0.5;
Oxidation inhibitor 0.2-1;
Photostabilizer 0.1-0.5;
Lubricant 1-3;
Black agglomerate 1-4;
(2) using twin screw extruder, is raw material with Sb system fire retardant and zinc borate, and preparation is the inorganic fire-retarded master batch of carrier with the ABS resin;
(3) inorganic fire-retarded master batch and the ABS resinoid that step (2) is obtained, bromide fire retardant, anti-dripping agent, oxidation inhibitor, photostabilizer, lubricant, black agglomerate stir thorough mixing in high-speed mixer after, send in the twin screw extruder through measuring apparatus, conveying, shearing and mixing following at screw rod, material melting, compound, again through extrude, tie rod, cooling, pelletizing step, obtain the fire retardant modified ABS resin of low-L value.
9. the preparation method of the fire retardant modified ABS resin of low-L value according to claim 8 is characterized in that, the weight content of Sb system fire retardant and zinc borate is 5%-30% in the described inorganic fire-retarded master batch.
10. the preparation method of the fire retardant modified ABS resin of low-L value according to claim 8 is characterized in that, the screw slenderness ratio of described twin screw extruder is 40, and has temperature control unit and vacuum extractor; The extrusion temperature of described extrusion step is between 190-230 ℃, and screw speed is 100-300 rev/min.
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| CN102604251A (en) * | 2012-03-13 | 2012-07-25 | 金发科技股份有限公司 | Flame-retardant AES (acrylonitrile ethylene styrene) material, preparation method for same and application thereof |
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