CN103351594A - PC-ABS alloy for computer housing - Google Patents
PC-ABS alloy for computer housing Download PDFInfo
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- CN103351594A CN103351594A CN2013103065569A CN201310306556A CN103351594A CN 103351594 A CN103351594 A CN 103351594A CN 2013103065569 A CN2013103065569 A CN 2013103065569A CN 201310306556 A CN201310306556 A CN 201310306556A CN 103351594 A CN103351594 A CN 103351594A
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Abstract
A PC-ABS (Acrylonitrile Butadiene Styrene) alloy for a computer housing is characterized by comprising the following constitutes in parts by weight: 70 parts of PC polycarbonate, 15 parts of ABS copolymer, 1-20 parts of flame retardant, 1-10 parts of stress cracking resisting agent, 1-10 parts of flexibilizer, 0.1-5 parts of flowable agent, wherein the flame retardant is at least one selected from triphenyl phosphate, tricresyl phosphate, bisphenol A diphosphonate cresyl diphenyl phosphate; the stress cracking resisting agent is at least one selected from ethyl- hydrogenised nitrile-acrylate ternary co-polymerized graft, and acrylic acid grafted polyolefin elastomer copolymer; the flexibilizer is at least one selected from ethylene-octane copolymer, ethylene-butane copolymer, ethylene-propene copolymer, and phenethylene-butadiene copolymer. The PC- ABS alloy improves gap impact strength performance and reduces complexity of the operation control.
Description
Technical field
The present invention relates to a kind of high polymer alloy, be specifically related to the PC-ABS alloy that a kind of computer casing is used.
Background technology
The PC-ABS resin alloy mixture of other copolymeric material or filler also claims the PC-ABS alloy for adding with base mateiral with polycarbonate and acrylonitrile-butadiene-styrene copolymer, is a kind of thermoplastic plastic rubber.In the PC-ABS resin alloy, the content of general PC is greater than 50%, described PC-ABS resin alloy combines the excellent specific property of PC and ABS bi-material, comprised the character such as mechanicalness, shock strength and heatproof, uvioresistant (UV) of the formability of ABS material and PC, be widely used in the prior art on automotive interior parts, business machine, the communication apparatus, electrical home appliances and the set lights for this reason.The computer particularly manufacturing of the housing of notebook computer also uses the PC-ABS resin alloy in a large number, Chinese invention patent ZL201010541575.6 discloses a kind of such alloy, the PC-ABS alloy that the disclosed this computer casing of ZL201010541575.6 is used, count by weight it and consist of:
30～80 parts of polycarbonate (PC);
5～65 parts of acrylonitrile-butadiene-styrene copolymers (ABS);
5～15 parts of compatilizers;
1～15 part of fire retardant;
3～20 parts of fillers;
Hardness properties-correcting agent l～10 parts;
0.5～5 part of Antidrip agent;
Auxiliary agent 0～l part;
In the PC-ABS alloy that the disclosed this computer casing of ZL201010541575.6 is used, described hardness properties-correcting agent is polymethylmethacrylate (PMMA), polyethylene terephthalate-l, the mixture of one or more of 4-cyclohexanedimethanoester ester (PETG), styrene-acrylonitrile copolymer (SAN), polysiloxane;
In the PC-ABS alloy that the disclosed this computer casing of ZL201010541575.6 is used, described filler be particle diameter the mineral substance powder between 500 orders～5000 orders or diameter between 5 microns～25 microns mineral fibre or the mixture of the two; In the PC-ABS alloy that the disclosed this computer casing of ZL201010541575.6 is used, described polycarbonate can be the polycarbonate resin of choosing wantonly, but be preferably the polycarbonate pellet of number-average molecular weight 24000～30000, perhaps the polycarbonate powder of number-average molecular weight 30000～35000, perhaps the two compound; Described acrylonitrile-butadiene-styrene copolymer is selected from the ABS resin of substance law or emulsion method production, is preferably emulsion method production ABS resin.
In the PC-ABS alloy that the disclosed this computer casing of ZL201010541575.6 is used, described compatilizer can be selected from butadiene-acrylic acid butyl ester-methyl methacrylate-grafted polymkeric substance, maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer, acrylic acid-grafted acrylonitrile-butadiene-styrene copolymer, methacrylic acid graft phenylethene-acrylonitrile copolymer, maleic anhydride grafted polyethylene, styrene acrylonitrile copolymer (SAN), the amination styrene acrylonitrile copolymer, MBS segmented copolymer (MBS), the mixture of one or more in vinylbenzene-hydrogenation butadiene-styrene block copolymer (SEBS) etc.; But being maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer, vinylformic acid, preferred compatilizer connects one or more mixture in cane acrylonitrile-butadiene-styrene copolymer, the methacrylic acid graft phenylethene-acrylonitrile copolymer.
In the PC-ABS alloy that the disclosed this computer casing of ZL201010541575.6 is used, described fire retardant can be selected one or more the mixture in phosphate compounds, phosphonate ester compound, silicon compound, fluorochemicals, sulfonate and the borate; But preferred fire retardant is the mixture of the one or both in phosphate compounds and the fluorochemicals.
What this will particularly point out be, although ZL201010541575.6 is the patent of invention of already having authorized, but the by weight scope of meter of the PC that its claim limits and ABS is unclear, in claim 1, it limits by weight meter on the one hand, 30～80 parts of polycarbonate (PC), 5～65 parts of acrylonitrile-butadiene-styrene copolymers (ABS); Simultaneously limit again the weight ratio of described polycarbonate and acrylonitrile-butadiene-styrene copolymer between 1.8:1～3:1.Obviously there is contradiction in these two.
This case the contriver think, normally, along with the increase of ABS component, the workability of alloy, paintability etc. improve in the PC-ABS alloy, but the thermotolerance of alloy, impact resistance can be affected.Therefore in order to obtain to have the PC-ABS alloy of good over-all properties, suitable PC and ABS weight proportion are necessary, simultaneously, the common recognition of industry those of ordinary skill is, the content of general PC should be greater than 50%, the described polycarbonate that this common recognition and ZL201010541575.6 contriver mention in claim 1 and the saying of weight ratio between 1.8:1～3:1 of acrylonitrile-butadiene-styrene copolymer are basically identical, clearly ZL201010541575.6 contriver limits 30～80 parts of polycarbonate (PC) in claim 1, and 5～65 parts of acrylonitrile-butadiene-styrene copolymers (ABS) are somewhat inconceivable.
The PC-ABS alloy that the disclosed computer casing of ZL201010541575.6 is used is except foregoing problems, the greatest problem that exists with material as computer casing is the computer casing made with this PC-ABS alloy, its inlay card position is very easy to fracture, moreover be exactly that local heating's point pole is yielding, its reason is that the notched Izod impact strength of the PC-ABS alloy that the disclosed this computer casing of ZL201010541575.6 is used is very low, and heat-drawn wire is also lower simultaneously.It is comparatively complicated that the problem of another aspect that prior art exists is that it forms, used raw material is more, in order to guarantee the performance index of product, generally all needing aborning source and performance to raw material to carry out comparatively strict control, obviously composition increases, to bring complicacy to subsequent production control, in sum, obviously prior art has further improved necessity.
Summary of the invention
The object of the present invention is to provide a kind of computer casing PC-ABS alloy, the problem that exists to overcome prior art.
A kind of computer casing PC-ABS alloy of the present invention is characterized in that counting by weight it consists of:
Described fire retardant is at least a in triphenylphosphate, Tritolyl Phosphate, the dihydroxyphenyl propane bis phosphoric acid diphenyl ester;
Described anti-stress cracking agent is at least a in ethyl-hydrogenated nitrile-CALCIUM ACRYLATE terpolymer grafts, the acrylic acid-grafted polyolefin elastic precursor copolymer;
Described toughner is at least a in POE, ethylene-butylene copolymer, ethylene propylene copolymer and the styrene-butadiene-copolymer;
Described flowing agent is at least a in ethylene bis stearamide (EBS), tetramethylolmethane stearic acid (PETS), PE wax and the PP wax.
This computer casing PC-ABS alloy of the present invention can use any known plastic working method preparation, as by processing such as forcing machine, mixing machine, kneaders, can be periodical operation, also can be operate continuously.But recommendation twin screw extruder melt-blending process prepares PC-ABS alloy of the present invention, and each component mixes rear employing standard twin screw extruder and standard technology extruding pelletization, namely gets a kind of computer casing PC-ABS alloy.
This case the contriver shockingly find, aforesaid this computer casing has very outstanding flowability with the PC-ABS alloy, dimensional stability and flame retardant properties index, have simultaneously extraordinary notched Izod impact strength performance index, be fit to very much make computer casing, particularly be fit to make the computer casing of large size specification, test shows, the computer casing that adopts this computer casing of the present invention to go out with the PC-ABS alloy production, the distortion of local heating's point is under control, computer casing repeated disassembled and assembled 200 times, inlay card parts fracture rate is less than 1%, obviously these performance index are considerable, moreover this computer casing PC-ABS alloy of the present invention, the parts by weight of polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer (ABS) keep fixing ratio, this has the meaning of outbalance to follow-up production control, and it is comparatively easy that the quality control of its subsequent production becomes.In sum, obvious purpose of the present invention is achieved.
Embodiment
The invention will be further described with the PC-ABS alloy for the computer casing that provides below with reference to preferred embodiment of the present invention.
Embodiment: the prescription of each embodiment is shown in table 1 and table 2, and the prescription of described each embodiment is by weight meter.The computer casing of each embodiment gained is shown in table 3 and table 4 with the performance written instructions of PC-ABS alloy product simultaneously.
Table 1: embodiment one to embodiment three prescription
| Prescription | Embodiment one | Embodiment two | Embodiment three |
| PC | 70 parts | 70 parts | 70 parts |
| ABS | 15 parts | 15 parts | 15 parts |
| Dihydroxyphenyl propane bis phosphoric acid diphenyl ester | 10 parts | 4 parts | 15 parts |
| Ethyl-hydrogenated nitrile-CALCIUM ACRYLATE terpolymer grafts | 3 parts | 3 parts | 3 parts |
| POE | 2 parts | 2 parts | 2 parts |
| Tetramethylolmethane stearic acid (PETS) | 0.5 part | 0.5 part | 0.5 part |
Table 2: embodiment four to embodiment six prescriptions
| Prescription | Embodiment four | Embodiment five | Embodiment six |
| PC | 70 parts | 70 parts | 70 parts |
| ABS | 15 parts | 15 parts | 15 parts |
| Tritolyl Phosphate | 10 parts | 4 parts | 15 parts |
| Acrylic acid-grafted polyolefin elastic precursor copolymer | 3.5 part | 3.5 part | 3.5 part |
| Ethylene-butylene copolymer | 2 parts | 2 parts | 2 parts |
| Ethylene bis stearamide (EBS) | 0.8 | 0.6 | 0.7 |
The computer casing of table 3: embodiment one to the embodiment three gained performance index of PC-ABS alloy product
The computer casing of table 4: embodiment four to the embodiment six gained performance index of PC-ABS alloy product
Among aforementioned each embodiment, all use the twin screw extruder melt-blending process to prepare PC-ABS alloy of the present invention, use homogenizer to stir during mixing, adopt the 75# twin screw extruder when extruding, rotating speed is 450r/min, and the first district of forcing machine temperature is 270 ℃, two district's temperature are 275 ℃, three district's temperature are 275 ℃, and four district's temperature are 275 ℃, and five district's temperature are 270 ℃.
More than the present invention has been done detailed description; its purpose is to allow the personage that is familiar with this art can understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; the equivalence that all spirit according to the present invention are done changes or modifies, and all should be encompassed in protection scope of the present invention.
Claims (4)
1. computer casing PC-ABS alloy is characterized in that counting by weight it consists of:
70 parts of polycarbonate (PC)
15 parts of acrylonitrile-butadiene-styrene copolymers (ABS)
1 ~ 20 part of fire retardant
1 ~ 10 part of anti-stress cracking agent
1 ~ 10 part of toughner
0.1 ~ 5 part of flowing agent
Described fire retardant is at least a in triphenylphosphate, Tritolyl Phosphate, the dihydroxyphenyl propane bis phosphoric acid diphenyl ester;
Described anti-stress cracking agent is at least a in ethyl-hydrogenated nitrile-CALCIUM ACRYLATE terpolymer grafts, the acrylic acid-grafted polyolefin elastic precursor copolymer;
Described toughner is at least a in POE, ethylene-butylene copolymer, ethylene propylene copolymer and the styrene-butadiene-copolymer;
Described flowing agent is at least a in ethylene bis stearamide (EBS), tetramethylolmethane stearic acid (PETS), PE wax and the PP wax.
2. a kind of computer casing PC-ABS alloy according to claim 1, it is characterized in that counting by weight it consists of: 70 parts of polycarbonate (PC), 15 parts of acrylonitrile-butadiene-styrene copolymers (ABS), 10 parts of Tritolyl Phosphates, 3.5 parts of acrylic acid-grafted polyolefin elastic precursor copolymers, 2 parts of ethylene-butylene copolymers, 0.8 part of ethylene bis stearamide (EBS).
3. a kind of computer casing PC-ABS alloy according to claim 1, it is characterized in that counting by weight it consists of: 70 parts of polycarbonate (PC), 15 parts of acrylonitrile-butadiene-styrene copolymers (ABS), 4 parts of Tritolyl Phosphates, 3.5 parts of acrylic acid-grafted polyolefin elastic precursor copolymers, 2 parts of ethylene-butylene copolymers, 0.6 part of ethylene bis stearamide (EBS).
4. a kind of computer casing PC-ABS alloy according to claim 1, it is characterized in that counting by weight it consists of: 70 parts of polycarbonate (PC), 15 parts of acrylonitrile-butadiene-styrene copolymers (ABS), 15 parts of Tritolyl Phosphates, 3.5 parts of acrylic acid-grafted polyolefin elastic precursor copolymers, 2 parts of ethylene-butylene copolymers, 0.7 part of ethylene bis stearamide (EBS).
Priority Applications (1)
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| CN2013103065569A CN103351594A (en) | 2013-07-19 | 2013-07-19 | PC-ABS alloy for computer housing |
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| CN2013103065569A CN103351594A (en) | 2013-07-19 | 2013-07-19 | PC-ABS alloy for computer housing |
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Cited By (5)
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| CN103613916A (en) * | 2013-10-30 | 2014-03-05 | 东莞市卡帝德塑化科技有限公司 | PC/ABS alloy modified engineering plastic dedicated for laptop casings and production method thereof |
| CN104177804A (en) * | 2014-08-27 | 2014-12-03 | 东莞市卡尔文塑胶科技有限公司 | PC (polycarbonate) stress cracking resistant agent as well as preparation method and use thereof |
| CN104497520A (en) * | 2014-11-26 | 2015-04-08 | 苏州新区佳合塑胶有限公司 | Composite material used for cellphone shells |
| CN104530679A (en) * | 2014-12-19 | 2015-04-22 | 上虞市精亮工贸有限公司 | Low-gloss flame-retardant alloy |
| CN112694738A (en) * | 2020-12-31 | 2021-04-23 | 珠海格力新材料有限公司 | PC/ABS composite material and preparation method and application thereof |
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|---|---|---|---|---|
| CN103613916A (en) * | 2013-10-30 | 2014-03-05 | 东莞市卡帝德塑化科技有限公司 | PC/ABS alloy modified engineering plastic dedicated for laptop casings and production method thereof |
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| CN104497520A (en) * | 2014-11-26 | 2015-04-08 | 苏州新区佳合塑胶有限公司 | Composite material used for cellphone shells |
| CN104530679A (en) * | 2014-12-19 | 2015-04-22 | 上虞市精亮工贸有限公司 | Low-gloss flame-retardant alloy |
| CN104530679B (en) * | 2014-12-19 | 2015-11-18 | 上虞市精亮工贸有限公司 | A kind of flame-retardant alloy of low-luster |
| CN112694738A (en) * | 2020-12-31 | 2021-04-23 | 珠海格力新材料有限公司 | PC/ABS composite material and preparation method and application thereof |
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Application publication date: 20131016 |