CN104629296A

CN104629296A - Low-warp high impact resistance flame retardant modified PC / ABS alloy

Info

Publication number: CN104629296A
Application number: CN201310543792.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-06
Filing date: 2013-11-06
Publication date: 2015-05-20

Abstract

The invention discloses a low-warp high impact resistance flame retardant modified PC / ABS alloy and belongs to the technical field of polymer materials The alloy provided by the invention comprises the following components by weight: 40%-60% of PC, 20%-30% of ABS, 5%-15% of alkali-free glass fiber, 5%-10% of an impact modifier, 5%-10%of a flame retardant, 0.1%-1% of an anti-dripping agent, 0.5%-3% of a compatibilizer, 0.1%-1% of an anti glass exposure agent, 0.1%-0.5 of an antioxidant%, and 0.1 wt%-1% of a silicon ketone powder. The invention has the beneficial effect that the PC / ABS alloy provided by the invention has the advantages of both PC and ABS, also has good low warp, high impact resistance, good gloss, easy processing, low cost, flame retardant performance of UL 94V-0 grade, high flame retardant efficiency, no halogen, environment-friendliness and no droplet.

Description

The PC/ABS alloy that a kind of low warpage high-impact is flame-retardant modified

Technical field

The present invention relates to technical field of polymer materials, the PC/ABS alloy that specifically a kind of low warpage high-impact is flame-retardant modified.

Background technology

PC/ABS alloy (polycarbonate/acrylonitrile-butadiene-phenylethene copolymer) is a kind of engineering plastics of excellent performance, it is with the advantage of PC and ABS, the melt viscosity of PC can be reduced on the one hand, improve thermotolerance and the tensile strength of ABS on the other hand, minimizing goods internal stress and shock strength are to the susceptibility of products thickness, there is excellent thermotolerance and mechanical property, achieved in automotive industry and the field such as electric, office machinery, household electrical appliances, communication at present and applied more and more widely.Along with the expansion of PC/ABS alloy material range of application, PC/ABS alloy system is also proposed to the requirement of functionalization, high performance, therefore, usually in PC/ABS alloy system, add three components, to play the effect improving its performance, consummating function and broadened application scope.

Summary of the invention

The object of the present invention is to provide the PC/ABS alloy that a kind of low warpage high-impact is flame-retardant modified.

The technical solution adopted for the present invention to solve the technical problems is: the PC/ABS alloy that a kind of low warpage high-impact is flame-retardant modified, and its component by mass percent proportioning is: PC 40% ~ 60%, ABS 20% ~ 30%, alkali free glass fibre 5% ~ 15%, impact modifier 5% ~ 10%, fire retardant 5% ~ 10%, Antidrip agent 0.1% ~ 1%, expanding material 0.5% ~ 3%, anti-glass emergence on the surface agent 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 0.5%, silicone powder 0.1% ~ 1%.

Described PC is bisphenol A polycarbonate, and its molecular weight is 18000 ~ 40000.

Described ABS is acrylonitrile-butadiene-styrene copolymer, and its molecular weight is 80000 ~ 150000.

Described impact modifier is the MBS (MBS) with nucleocapsid structure.

Described fire retardant is dihydroxyphenyl propane-bis-(diphenyl phosphate) (BDP).

Described Antidrip agent is the coated tetrafluoroethylene of styrene-acrylonitrile copolymer (AS) or polybutylene terephthalate (PBT).

Described expanding material is the one in maleic anhydride grafted ABS (ABS-g-MAH), maleic anhydride grafted polyethylene (PE-g-MAH), maleic anhydride inoculated polypropylene (PP-g-MAH).

Described anti-glass emergence on the surface agent is modification ethylene bis-fatty acid amides (TAF).

Described oxidation inhibitor is one or more in antioxidant 1010, antioxidant 1076, oxidation inhibitor 2921, irgasfos 168.

The preparation method of the PC/ABS alloy that above-mentioned a kind of low warpage high-impact is flame-retardant modified, comprises the following steps:

(1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, ABS at 80 DEG C ~ 90 DEG C dry 2 ~ 4 hours, fire retardant at 60 DEG C ~ 80 DEG C dry 30 ~ 45 minutes, stand-by;

(2), the ABS and fire retardant that take drying are by weight ratio added in high-speed mixer, then the Antidrip agent, oxidation inhibitor, the silicone powder that take by weight ratio is added, after making to stir together 3 ~ 10 minutes and reaching and mix, discharging add carry out melt blending in twin screw extruder after extrude, cooling granulation, and stand-by after drying;

(3), the product taking dry PC and step (2) is by weight ratio added in high-speed mixer, then add take by weight ratio impact modifier, expanding material, anti-glass emergence on the surface agent, after making to stir together 5 ~ 15 minutes and reaching and mix, discharging adds the main spout of twin screw extruder, add from the side spout of twin screw extruder the alkali free glass fibre that will take by weight ratio simultaneously, extrude after 230 DEG C ~ 270 DEG C melt blendings, cooling granulation, obtain the PC/ABS alloy that a kind of low warpage high-impact of the present invention is flame-retardant modified.

The invention has the beneficial effects as follows, the present invention has the advantage of PC, ABS concurrently, and has good low warpage, high-impact performance, glossiness is good, and be easy to processing, cost is low, and UL94 V-0 level flame retardant properties can be met, flame retarding efficiency is high, halogen-free environmental is good and without molten drop phenomenon.

Embodiment

Technical scheme of the present invention is further illustrated below in conjunction with concrete preferred embodiment.

The PC/ABS alloy that low warpage high-impact is flame-retardant modified, its component by mass percent proportioning is: PC 55%, ABS 25%, alkali free glass fibre 10%, the MBS (MBS) 5% with nucleocapsid structure, dihydroxyphenyl propane-bis-(diphenyl phosphate) (BDP) 10%, Antidrip agent 0.5%, maleic anhydride grafted ABS (ABS-g-MAH) 3%, modification ethylene bis-fatty acid amides (TAF) 0.5%, antioxidant 1010 0.2%, silicone powder 0.8%.Wherein, described PC is bisphenol A polycarbonate, and its molecular weight is 18000 ~ 40000; Described ABS is acrylonitrile-butadiene-styrene copolymer, and its molecular weight is 80000 ~ 150000; Described Antidrip agent is the coated tetrafluoroethylene of styrene-acrylonitrile copolymer (AS) or polybutylene terephthalate (PBT).

Preparation method: (1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, ABS at 80 DEG C ~ 90 DEG C dry 2 ~ 4 hours, dihydroxyphenyl propane-bis-(diphenyl phosphate) (BDP) at 60 DEG C ~ 80 DEG C dry 30 ~ 45 minutes, stand-by, (2), add in high-speed mixer by taking dry ABS and dihydroxyphenyl propane-bis-(diphenyl phosphate) (BDP) by weight ratio, then the Antidrip agent, antioxidant 1010, the silicone powder that take by weight ratio is added, after making to stir together 3 ~ 10 minutes and reaching and mix, discharging add carry out melt blending in twin screw extruder after extrude, cooling granulation, and stand-by after drying, (3), the product taking dry PC and step (2) is by weight ratio added in high-speed mixer, then the MBS (MBS) with nucleocapsid structure taken by weight ratio is added, maleic anhydride grafted ABS (ABS-g-MAH), modification ethylene bis-fatty acid amides (TAF), after making to stir together 5 ~ 15 minutes and reaching and mix, discharging adds the main spout of twin screw extruder, add from the side spout of twin screw extruder the alkali free glass fibre that will take by weight ratio simultaneously, extrude after 230 DEG C ~ 270 DEG C melt blendings, cooling granulation, obtain the PC/ABS alloy that a kind of low warpage high-impact of the present invention is flame-retardant modified.

Claims

1. the PC/ABS alloy that one kind low warpage high-impact is flame-retardant modified, it is characterized in that, its component by mass percent proportioning is: PC 40% ~ 60%, ABS 20% ~ 30%, alkali free glass fibre 5% ~ 15%, impact modifier 5% ~ 10%, fire retardant 5% ~ 10%, Antidrip agent 0.1% ~ 1%, expanding material 0.5% ~ 3%, anti-glass emergence on the surface agent 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 0.5%, silicone powder 0.1% ~ 1%.

2. the PC/ABS alloy that a kind of low warpage high-impact according to claim 1 is flame-retardant modified, is characterized in that, described impact modifier is the MBS (MBS) with nucleocapsid structure.

3. the PC/ABS alloy that a kind of low warpage high-impact according to claim 1 is flame-retardant modified, is characterized in that, described fire retardant is dihydroxyphenyl propane-bis-(diphenyl phosphate) (BDP).

4. the PC/ABS alloy that a kind of low warpage high-impact according to claim 1 is flame-retardant modified, is characterized in that, described Antidrip agent is the coated tetrafluoroethylene of styrene-acrylonitrile copolymer (AS) or polybutylene terephthalate (PBT).

5. the PC/ABS alloy that a kind of low warpage high-impact according to claim 1 is flame-retardant modified, it is characterized in that, described expanding material is the one in maleic anhydride grafted ABS (ABS-g-MAH), maleic anhydride grafted polyethylene (PE-g-MAH), maleic anhydride inoculated polypropylene (PP-g-MAH).

6. the preparation method of the PC/ABS alloy that a kind of low warpage high-impact according to claim 1 is flame-retardant modified, is characterized in that, comprise the following steps: