CN104629325A

CN104629325A - Low-gloss impact-resistant flame-resistant modified PC/ABS blending alloy

Info

Publication number: CN104629325A
Application number: CN201310546606.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-07
Filing date: 2013-11-07
Publication date: 2015-05-20

Abstract

The invention discloses a low-gloss impact-resistant flame-resistant modified PC/ABS blending alloy. The low-gloss impact-resistant flame-resistant modified PC/ABS blending alloy comprises, by mass, 40 to 60% of PC, 20 to 30% of ABS, 2 to 8% of a flexibilizer, 5 to 10% of a flame resistance, 1 to 3% of a delustering agent, 2 to 5% of a compatibilizer, 0.1 to 0.5% of an antioxidant, and 0.1 to 1% of a lubricant. Beneficial effects of the low-gloss impact-resistant flame-resistant modified PC/ABS blending alloy are that: the low-gloss impact-resistant flame-resistant modified PC/ABS blending alloy possesses advantages of PC and ABS, and excellent mechanical properties; impact strength, rigidity, heat resistance, and flame resistance are improved greatly; glossiness is low, and fluidity is high; processing is convenient; cost is low; and the low-gloss impact-resistant flame-resistant modified PC/ABS blending alloy is extremely suitable to be used as an automotive interior trim and exterior trim material.

Description

Shock-resistant flame-retardant modified PC and the ABS blend alloy of a kind of low gloss

Technical field

The present invention relates to technical field of polymer materials, specifically shock-resistant flame-retardant modified PC and the ABS blend alloy of a kind of low gloss.

Background technology

PC(polycarbonate) and ABS(acrylonitrile-butadiene-styrene copolymer) blend alloy is a kind of alloy plastic 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, and product surface good luster, attractive in appearance, obtain in fields such as automobile, electronics, electrical equipment, office machinery, household electrical appliances, communications at present and applied more and more widely.Along with the expansion of PC and ABS alloy material range of application, to the requirement which proposing functionalization, high performance, the PC especially applied on inner and outer decorative parts of automobile and ABS, require that it has low gloss, shock-resistant, high flame retardant and high performance-price ratio etc.

Summary of the invention

The object of the present invention is to provide shock-resistant flame-retardant modified PC and the ABS blend alloy of low gloss that a kind of cost performance is high.

The technical solution adopted for the present invention to solve the technical problems is: shock-resistant flame-retardant modified PC and the ABS blend alloy of a kind of low gloss, its component by mass percent proportioning is: PC 40% ~ 60%, ABS 20% ~ 30%, toughner 2% ~ 8%, fire retardant 5% ~ 10%, matting agent 1% ~ 3%, expanding material 2% ~ 5%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 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 ~ 250000, and the mass percentage content of its each component is vinyl cyanide 15% ~ 30%, divinyl 5% ~ 20%, vinylbenzene 50% ~ 75%.

Described toughner is the nano-calcium carbonate composite particles of surface grafting vinyl cyanide and methyl methacrylate dual MCU system.

Described fire retardant by dihydroxyphenyl propane-bis-(diphenyl phosphate) (BDP), ammonium polyphosphate (APP) and tetrafluoroethylene (PTEE) three in mass ratio 6:3:1 mix the composite flame-retardant agent formed.

Described matting agent is crosslinking butadiene-acrylonitrile polymer or cross-linking type SAN.

Described expanding material is styrene-maleic anhydride copolymer (SMA), and the mass percent content of its maleic anhydride contained is 10% ~ 20%.

Described oxidation inhibitor is the compound of antioxidant 1010 and irgasfos 168 1:2 in mass ratio.

Described lubricant is pentaerythritol stearate (PETS).

The preparation method of shock-resistant flame-retardant modified PC and the ABS blend alloy of above-mentioned a kind of low gloss, 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, stand-by;

(2), using nano-calcium carbonate composite particles as the preparation technology of toughner: nano-calcium carbonate 75wt% deionized water is mixed with 10%(weight) suspension, add CH-1A hyper-dispersant 2wt% again, after stirring 30 ~ 45 minutes with homogenizer, with dilute hydrochloric acid, its pH value is adjusted to 6.5 ~ 7.0, then add in the reactor with nitrogen protection, temperature of reaction 60 DEG C ~ 80 DEG C, under rotating speed 500 ~ 800r/min, add initiator ammonium persulfate 3wt%, and after stirring 5 ~ 15 minutes, start to add monomers acrylonitrile 10wt%, then monomers methyl methacrylate 10wt% is added, under continuing to stir and keep 60 DEG C ~ 80 DEG C temperature, reaction stopped heating after 2 ~ 4 hours, question response liquid cooling is final vacuum suction filtration but, use vacuum drying oven again at 75 DEG C ~ 90 DEG C dry 15 ~ 20 hours, obtain described nano-calcium carbonate composite particles, stand-by,

(3), add in high-speed mixer by taking dry ABS by weight ratio, then the fire retardant, matting agent, oxidation inhibitor, the lubricant that take by weight ratio is added, after making to stir together 3 ~ 15 minutes and reaching and mix, discharging add carry out melt blending in twin screw extruder after extrude, cooling granulation, and stand-by after drying;

(4), the product taking dry PC and step (3) is by weight ratio added in high-speed mixer, then the product taking step (2) is by weight ratio added, add the expanding material taken by weight ratio again, make to stir 3 ~ 15 minutes together, to be mixed evenly after, discharging adds in twin screw extruder, extrudes, cooling granulation after 230 DEG C ~ 270 DEG C melting blendings, gets product.

The invention has the beneficial effects as follows, the present invention is with the advantage of both PC, ABS, while maintenance excellent mechanical performances, significantly improve the shock strength of alloy material, rigidity, thermotolerance and flame retardant resistance, and there is lower glossiness and high workability, be easy to processing, cost is also low, is highly suitable for making inner and outer decorative parts of automobile material.

Embodiment

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

Shock-resistant flame-retardant modified PC and the ABS blend alloy of low gloss, its component by mass percent proportioning is: compound 0.3%, the pentaerythritol stearate (PETS) 0.7% of PC 51%, ABS 30%, toughner 5%, fire retardant 8%, crosslinking butadiene-acrylonitrile polymer 2%, expanding material 3%, antioxidant 1010 and irgasfos 168 1:2 in mass ratio.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 ~ 250000, and the mass percentage content of its each component is vinyl cyanide 15% ~ 30%, divinyl 5% ~ 20%, vinylbenzene 50% ~ 75%; Described toughner is the nano-calcium carbonate composite particles of surface grafting vinyl cyanide and methyl methacrylate dual MCU system; Described fire retardant by dihydroxyphenyl propane-bis-(diphenyl phosphate) (BDP), ammonium polyphosphate (APP) and tetrafluoroethylene (PTEE) three in mass ratio 6:3:1 mix the composite flame-retardant agent formed; Described expanding material is styrene-maleic anhydride copolymer (SMA), and the mass percent content of its maleic anhydride contained is 10% ~ 20%.

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, stand-by, (2), using nano-calcium carbonate composite particles as the preparation technology of toughner: nano-calcium carbonate 75wt% deionized water is mixed with 10%(weight) suspension, add CH-1A hyper-dispersant 2wt% again, after stirring 30 ~ 45 minutes with homogenizer, with dilute hydrochloric acid, its pH value is adjusted to 6.5 ~ 7.0, then add in the reactor with nitrogen protection, temperature of reaction 60 DEG C ~ 80 DEG C, under rotating speed 500 ~ 800r/min, add initiator ammonium persulfate 3wt%, and after stirring 5 ~ 15 minutes, start to add monomers acrylonitrile 10wt%, then monomers methyl methacrylate 10wt% is added, under continuing to stir and keep 60 DEG C ~ 80 DEG C temperature, reaction stopped heating after 2 ~ 4 hours, question response liquid cooling is final vacuum suction filtration but, use vacuum drying oven again at 75 DEG C ~ 90 DEG C dry 15 ~ 20 hours, obtain described nano-calcium carbonate composite particles, stand-by, (3), add in high-speed mixer by taking dry ABS by weight ratio, then the fire retardant, crosslinking butadiene-acrylonitrile polymer, oxidation inhibitor, the pentaerythritol stearate (PETS) that take by weight ratio is added, after making to stir together 3 ~ 15 minutes and reaching and mix, discharging add carry out melt blending in twin screw extruder after extrude, cooling granulation, and stand-by after drying, (4), the product taking dry PC and step (3) is by weight ratio added in high-speed mixer, then the product taking step (2) is by weight ratio added, add the expanding material taken by weight ratio again, make to stir 3 ~ 15 minutes together, to be mixed evenly after, discharging adds in twin screw extruder, extrudes, cooling granulation after 230 DEG C ~ 270 DEG C melting blendings, gets product.

Claims

1. shock-resistant flame-retardant modified PC and the ABS blend alloy of low gloss, it is characterized in that, its component by mass percent proportioning is: PC 40% ~ 60%, ABS 20% ~ 30%, toughner 2% ~ 8%, fire retardant 5% ~ 10%, matting agent 1% ~ 3%, expanding material 2% ~ 5%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

2. shock-resistant flame-retardant modified PC and the ABS blend alloy of a kind of low gloss according to claim 1, is characterized in that, described toughner is the nano-calcium carbonate composite particles of surface grafting vinyl cyanide and methyl methacrylate dual MCU system.

3. shock-resistant flame-retardant modified PC and the ABS blend alloy of a kind of low gloss according to claim 1, it is characterized in that, described fire retardant by dihydroxyphenyl propane-bis-(diphenyl phosphate) (BDP), ammonium polyphosphate (APP) and tetrafluoroethylene (PTEE) three in mass ratio 6:3:1 mix the composite flame-retardant agent formed.

4. shock-resistant flame-retardant modified PC and the ABS blend alloy of a kind of low gloss according to claim 1, is characterized in that, described matting agent is crosslinking butadiene-acrylonitrile polymer or cross-linking type SAN.

5. shock-resistant flame-retardant modified PC and the ABS blend alloy of a kind of low gloss according to claim 1, is characterized in that, described expanding material is styrene-maleic anhydride copolymer (SMA), and the mass percent content of its maleic anhydride contained is 10% ~ 20%.

6. the preparation method of shock-resistant flame-retardant modified PC and the ABS blend alloy of a kind of low gloss according to claim 1, is characterized in that, comprise the following steps: