CN1580126A - Preparation of PC/ABS alloy - Google Patents
Preparation of PC/ABS alloy Download PDFInfo
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- CN1580126A CN1580126A CN 03142022 CN03142022A CN1580126A CN 1580126 A CN1580126 A CN 1580126A CN 03142022 CN03142022 CN 03142022 CN 03142022 A CN03142022 A CN 03142022A CN 1580126 A CN1580126 A CN 1580126A
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- 229920007019 PC/ABS Polymers 0.000 title claims abstract description 36
- 239000000956 alloy Substances 0.000 title claims abstract description 28
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000004417 polycarbonate Substances 0.000 claims abstract description 25
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 9
- 239000000314 lubricant Substances 0.000 claims abstract description 8
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 239000004743 Polypropylene Substances 0.000 claims description 15
- 229920001155 polypropylene Polymers 0.000 claims description 15
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 7
- 239000003999 initiator Substances 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 5
- 239000008117 stearic acid Substances 0.000 claims description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical class CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 4
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 claims description 4
- 239000003063 flame retardant Substances 0.000 claims description 3
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical group CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 claims description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 2
- 229920000402 bisphenol A polycarbonate polymer Polymers 0.000 claims description 2
- 238000012661 block copolymerization Methods 0.000 claims description 2
- 238000012662 bulk polymerization Methods 0.000 claims description 2
- 238000007334 copolymerization reaction Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000005453 pelletization Methods 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 9
- 239000003963 antioxidant agent Substances 0.000 abstract description 2
- 230000003078 antioxidant effect Effects 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 abstract description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 abstract 4
- 239000008187 granular material Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 101100015456 Litomosoides carinii GP22 gene Proteins 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 229920004313 LEXAN™ RESIN 141 Polymers 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
This invention refers to a kind of preparation method of PC/ABS alloy, adopts ABS/PP-g-MAH as the compatiblizing agent of PC/ABS and is composed of polycarbonate, acrylonitrile-styrene- butadiene copolymer (ABS), ABS/PP grafts, antioxidant, lubricant and other auxiliary agents. We mix them in double-screwed extruder, discharges, extrudes, cools, dries, granulates and gets the turnoff. The invention is characterized with good mechanical properties, processing propertyies and high thermal endurance and is adaptable to injection molding.
Description
Technical field
The present invention relates to a kind of preparation of PC/ABS alloy, can be used for automobile-used product, household electrical appliances product etc., belong to technical field of polymer materials.
Background technology
The PC transparency is good, the thermotolerance height, and good light stability, dimensional stability is good, be the best engineering plastics of toughness, but it is to the breach sensitivity, and the product internal stress is big, and the melt viscosity height is mobile poor, difficult forming.
ABS resin is a kind of interchangeable heat plastic resin with good impact resistance and good moulding processability, and it has higher P/C ratio, is easy to electroplate, mechanical workout, and dimensional stability is good, but its thermotolerance and weathering resistance are poor.
With PC and ABS resin is that the blend of main raw material is a kind of important engineering polyblend, this material has good moulding flowing property, can be used for moulding big area and complicated goods, have the good low-temperature resistance impact property, higher heat-drawn wire and good light stability.
Yet there is the shortcoming of consistency difference in the simple blend of PC/ABS.SAN solubility parameter among PC and the ABS is more approaching, and PC is 9.8 (cal/cm
3)
0.5, SAN is 9.3-9.6 (cal/cm
3)
0.5, the consistency of SAN and PC is better, however the polyhutadiene among PC and the ABS is difficult to compatible, can cause weak connection between them, and physicals is descended.Existing many bibliographical informations multiple expanding material, can improve the consistency of ABS and PC, as SMA, PMMA, MBS, ACR, the compatilizer of Chang Zuowei PC/ABS alloys such as ABS-g-MA.Contain the history of thermoplastic composition existing three more than ten years of polycarbonate and abs polymer, each major company has applied for a large amount of patents, be mainly concerned with the PC/ABS alloy increase-volume, fire-retardant, solve field such as weld mark.The good PC/ABS alloy of a kind of release property is disclosed as US5008315; CA2082983 discloses a kind of method for making of PC/ABS low gloss alloy; TW416908 discloses a kind of method that aromatic phosphoric ester can improve the PC/ABS release property that adds, and in order to improve its physical and mechanical properties, solves stain; US6583204 has introduced a kind of fire retardation PC/ABS of Heat stability is good, US5846665 has introduced a kind of PC/ABS alloy of electrodepositable, US5990208 has introduced the preparation method of a kind of anti-ultraviolet PC/ABS, US5847041 relates to the polyolefinic alloy of a kind of PC/, mentions and adopts the consistency that can improve behind the PP grafted maleic anhydride with PC.
Summary of the invention
The purpose of this invention is to provide a kind of preparation with PC/ABS alloy of favorable mechanical performance and processing characteristics.
For realizing above purpose, technical scheme of the present invention provides a kind of preparation of PC/ABS alloy, it is characterized in that adopt the compatilizer of a kind of ABS/PP grafted maleic anhydride (ABS/PP-g-MAH) as PC/ABS, it is made by following materials of weight proportions: (%)
Polycarbonate 50～80
Acrylonitrile-styrene-butadienecopolymer (ABS) 5～60
ABS/PP grafts 5～60
Oxidation inhibitor 0.2～1.0
Lubricant 0.1～0.5
Other auxiliary agent 0.1～2.0
Described polycarbonate is that molecular weight is the bisphenol A polycarbonate of 10000-30000; Described acrylonitrile-styrene-butadienecopolymer (ABS), styrene content 30-65% wherein, acrylonitrile content 20-35%, butadiene content 10-50%, ABS are that letex polymerization or mass polymerization all can; Described ABS/PP grafts is made by following materials of weight proportions: ABS 50--70, polypropylene (PP) 20-40, maleic anhydride (MAH) 1.2-1.7, initiator 0.08-1.2, stearic acid 0.3-0.6; Described polypropylene (PP) is homopolymerization PP, block copolymerization PP and random copolymerization PP; Described initiator adopts dicumyl peroxide (DCP) or 2,5-dimethyl-2, two (tert-butyl hydroperoxide) hexanes of 5-; Described oxidation inhibitor is four [β-(3,5-di-tert-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester and three (2, the 4-di-tert-butylphenol) phosphorous acid ester; Described lubricant is an ethylene bis stearamide; Described other auxiliary agent can be processing aid, fire retardant, releasing agent, photostabilizer, toughner, tinting material etc.
A kind of preparation method of PC/ABS alloy, its method is as follows:
(1) takes by weighing raw material by weight ratio;
(2) prepare the ABS/PP grafts earlier
To enter twin screw extruder behind ABS, PP, maleic anhydride (MAH), initiator, the stearic acid uniform mixing, complete processing is as follows: a district temperature 170-190 ℃, two district temperature 170-190 ℃, three district temperature 180-200 ℃, four district temperature 180-200 ℃, five district temperature 180-200 ℃, six district temperature 170-190 ℃; The residence time is 1-3 minute, and engine speed is 300 rev/mins, and pressure is 12-18Mpa.
(3) will enter twin screw extruder behind polycarbonate, acrylonitrile-styrene-butadienecopolymer (ABS), ABS/PP grafts, oxidation inhibitor, lubricant and other auxiliary agent uniform mixing, complete processing is as follows: a district temperature 220-240 ℃, two district temperature 240-250 ℃, three district temperature 240-260 ℃, four district temperature 240-260 ℃, five district temperature 240-260 ℃, six district temperature 230-250 ℃; The residence time is 1.5-2.5 minute, and engine speed 300-450 rev/min, pressure is 12-18Mpa.
(4) discharging is extruded postcooling, drying, pelletizing and is got product.
The present invention adopts the compatilizer of ABS/PP-g-MAH as PC/ABS, even directly replace the ABS component, the PC/ABS alloy of preparation has favorable mechanical performance and processing characteristics, cause PC/ABS alloy tensile property, bending property and impact property all to be improved significantly, and Drawing abillity improves, and can improve the internal stress of jet flow, raising melt strength, reduction goods.
Advantage of the present invention is to have favorable mechanical performance and processing characteristics, and the thermotolerance height is suitable for injection molding.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail:
The Lexan 141 that polycarbonate is produced for GE company, ABS are that the trade mark that BASF AG produces is GP22, compatilizer ABS/PP-g-MAH self-control.
It is four [β-(3 that oxidation inhibitor is selected chemical name for use, 5-di-tert-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester, trade(brand)name Irganox 1010, Switzerland Ciba company produces, auxiliary antioxidant is selected three (2, the 4-di-tert-butylphenol) phosphorous acid ester for use, and trade(brand)name Irganox 168, Switzerland Ciba company produces, and consumption is 1010/168=0.1/0.2
Lubricant is N, and N '-ethylene bis stearamide (EBS) is commercially available.
TE-35 (L/D=48) the twin screw extruder production that PC/ABS alloy of the present invention adopts Nanjing Ke Ya company to produce, complete processing is as follows: a district temperature 220-240 ℃, two district temperature 240-250 ℃, three district temperature 240-260 ℃, four district temperature 240-260 ℃, five district temperature 240-260 ℃, six district temperature 230-250 ℃, the residence time is 1.5-2.5 minute, and engine speed 300-450 rev/min, pressure is 12-18Mpa.The preparation of ABS/PP-g-MAH.
The present invention at first relates to the preparation of ABS/PP-g-MAH compatilizer, and it is composed as follows to fill a prescription: ABS (GP22, German BASF AG product) 69, PP (F401, Yangzi Petrochemical Co., Ltd's product) 28.9, maleic anhydride (MAH) 1.5, initiator DCP 0.1, stearic acid 0.5
TE-35 (L/D=48) the twin screw extruder production of adopting Nanjing Ke Ya company to produce, complete processing is as follows: 180 ℃ of district's temperature, 180 ℃ of two district's temperature, 190 ℃ of three district's temperature, 190 ℃ of four district's temperature, 190 ℃ of five district's temperature, 180 ℃ of six district's temperature; The residence time is 2 minutes, and engine speed is 300 rev/mins, and pressure is 15Mpa.The about 10kg/ of output hour, the percentage of grafting by the examination of infrared spectrum material was 0.5%.
Embodiment 1:
With the PC weight ratio is 44.2%, and the ABS weight ratio is 50%, and the ABS/PP-g-MAH weight ratio is 5%, 1010/168 weight ratio is 0.1/0.2%, the EBS weight ratio is 0.5%, in super mixer with said components mixing at room temperature, afterwards in twin screw extruder production, processing conditions is: 235 ℃ of district's temperature, 245 ℃ of two district's temperature, 250 ℃ of three district's temperature, 250 ℃ of four district's temperature, 250 ℃ of five district's temperature, 245 ℃ of six district's temperature; The residence time is 2 minutes, and 450 rev/mins of engine speeds, pressure are 15Mpa.
Embodiment 2
With the PC weight ratio is 54.2%, and the ABS weight ratio is 40%, and the ABS/PP-g-MAH weight ratio is that 5%, 1010/168 weight ratio is 0.1/0.2%, and the EBS weight ratio is 0.5%.Mix with super mixer is at room temperature dried, afterwards in twin screw extruder production, processing conditions is: 235 ℃ of district's temperature, 245 ℃ of two district's temperature, 250 ℃ of three district's temperature, 250 ℃ of four district's temperature, 250 ℃ of five district's temperature, 245 ℃ of six district's temperature; The residence time is 2 minutes, and 450 rev/mins of engine speeds, pressure are 15Mpa.
Embodiment 3
With the PC weight ratio is 64.2%, and the ABS weight ratio is 30%, and the ABS/PP-g-MAH weight ratio is that 5%, 1010/168 weight ratio is 0.1/0.2%, and the EBS weight ratio is 0.5%.Mix with super mixer is at room temperature dried, afterwards in twin screw extruder production, processing conditions is: 235 ℃ of district's temperature, 245 ℃ of two district's temperature, 250 ℃ of three district's temperature, 250 ℃ of four district's temperature, 250 ℃ of five district's temperature, 245 ℃ of six district's temperature; The residence time is 2 minutes, and 450 rev/mins of engine speeds, pressure are 15Mpa.
Embodiment 4
With the PC weight ratio is 54.2%, the ABS/PP-g-MAH weight ratio is 45%, 1010/168 weight ratio is 0.1/0.2%, and the EBS weight ratio is that 0.5%. mixes with super mixer is at room temperature dried, afterwards in twin screw extruder production, processing conditions is: 235 ℃ of district's temperature, 245 ℃ of two district's temperature, 250 ℃ of three district's temperature, 250 ℃ of four district's temperature, 250 ℃ of five district's temperature, 245 ℃ of six district's temperature; The residence time is 2 minutes, and 450 rev/mins of engine speeds, pressure are 15Mpa.
Comparative Examples 1
With the PC weight ratio is 44.2%, and the ABS weight ratio is that 55%, 1010/168 weight ratio is 0.1/0.2%, and the EBS weight ratio is 0.5%.Mix with super mixer is at room temperature dried, afterwards in twin screw extruder production, processing conditions is: processing conditions is: 235 ℃ of district's temperature, 245 ℃ of two district's temperature, 250 ℃ of three district's temperature, 250 ℃ of four district's temperature, 250 ℃ of five district's temperature, 245 ℃ of six district's temperature; The residence time is 2 minutes, and 450 rev/mins of engine speeds, pressure are 15Mpa.
Comparative Examples 2
With the PC weight ratio is 54.2%, and the ABS weight ratio is that 45%, 1010/168 weight ratio is 0.1/0.2%, and the EBS weight ratio is 0.5%.Mix with super mixer is at room temperature dried, afterwards in twin screw extruder production, processing conditions is: processing conditions is: 235 ℃ of district's temperature, 245 ℃ of two district's temperature, 250 ℃ of three district's temperature, 250 ℃ of four district's temperature, 250 ℃ of five district's temperature, 245 ℃ of six district's temperature; The residence time is 2 minutes, and 450 rev/mins of engine speeds, pressure are 15Mpa.
Comparative Examples 3
With the PC weight ratio is 64.2%, and the ABS weight ratio is that 35%, 1010/168 weight ratio is 0.1/0.2%, and the EBS weight ratio is 0.5%.Mix with super mixer is at room temperature dried, afterwards in twin screw extruder production, processing conditions is: processing conditions is: 235 ℃ of district's temperature, 245 ℃ of two district's temperature, 250 ℃ of three district's temperature, 250 ℃ of four district's temperature, 250 ℃ of five district's temperature, 245 ℃ of six district's temperature; The residence time is 2 minutes, and 450 rev/mins of engine speeds, pressure are 15Mpa.
Performance test
Breach and unnotched impact strength are pressed DIN 53453 and are carried out, and batten is of a size of 50*6*4, and testing apparatus is German Zwick B5102.202 shock-testing machine.
The tensile property test is pressed DIN 53455 and is carried out, and batten is 1B, and testing apparatus is German Zwick Z010 electronic tensile machine, and draw speed is 50mm/min.
The test of bending property is pressed DIN 53452 and is carried out, and batten is of a size of 50*6*4, and testing apparatus is the ZwickZ010 electronic tensile machine, and span is 40mm, and speed is 14mm/min.
The test of melt flow rate (MFR) (MFR) is pressed DIN 53735 and is carried out, and test condition is 265 ℃ of 5kg.Density is tested by DIN 53479.
Ball indentation hardness is carried out by testing standard DIN 53456, and batten is of a size of Φ 50*6, and testing apparatus is the Zwick sclerometer, loads to be 358N 30 seconds readings.
Vicat softening temperature is carried out by testing standard DIN 53460, and testing apparatus is the dimension card heat-drawn wire tester of Italian CEAST company.
Embodiment and Comparative Examples prescription and performance are relatively
| Embodiment | ??1 | ??2 | ???3 | ????4 | |||
| Comparative Examples | ???1 | ???2 | ???3 | ||||
| ?PC-110 | ??44.2 | ??54.2 | ???64.2 | ???54.2 | ???44.2 | ???54.2 | ???64.2 |
| ?ABS?GP?22 | ??50 | ??40 | ???30 | ???- | ???55 | ???45 | ???35 |
| ?ABS/PP-g-MAH | ??5 | ??5 | ???10 | ???45 | ???- | ||
| ?1010/168 | ??0.1/0.2 | ??0.1/0.2 | ???0.1/0 ???.2 | ???0.1/0 ???.2 | ???0.1/0 ???.2 | ???0.1/0 ???.2 | ???0.1/0 ???.2 |
| ?EBS | ??0.5 | ??0.5 | ???0.5 | ???0.5 | ???0.5 | ???0.5 | ???0.5 |
| Charpy notched Izod impact strength (kJ/m 2) | ??46.7 | ??44.7 | ???52.1 | ???48.9 | ???25.9 | ???28.6 | ???31.2 |
| Charpy unnotched impact strength (kJ/m 2) | Not disconnected | Not disconnected | Not disconnected | Not disconnected | Not disconnected | Not disconnected | Not disconnected |
| Tensile strength (MPa) | ??56.25 | ??55.76 | ??58.2 | ????56.9 ????8 | ????47.3 ????6 | ????48.2 | ????50.1 |
| Flexural strength (MPa) | ??79.1 | ??84 | ??82.5 | ????80.6 ????1 | ????72.7 ????7 | ????74.4 | ????75.5 |
| Modulus in flexure (MPa) | ??2308 | ??2384 | ??2300 | ????2248 | ????2199 | ????2240 | ????2287 |
| MFR(g/10min) | ??25.5 | ??26 | ??23.5 | ????24.9 | ????26 | ????24.5 | ????24.5 |
| Density (g/cm 3) | ??1.110 | ??1.128 | ??1.14 ??9 | ????1.13 ????2 | ????1.10 ????8 | ????1.12 ????8 | ????1.14 ????5 |
| Ball indentation hardness (MPa) | ??118 | ??120 | ??121. ??2 | ????117. ????8 | ????113. ????8 | ????116. ????7 | ????116. ????7 |
| Vicat softening temperature (5kg) (℃) | ??109.8 | ??114.4 | ??120. ??5 | ????116. ????7 | ????106. ????3 | ????110. ????6 | ????114. ????5 |
As can be seen from the above table, under the situation of identical PC/ABS proportioning, the impact property, bending property, ball indentation hardness and the vicat softening temperature that contain the system PC/ABS alloy of ABS/PP-g-MAH expanding material are all improved in various degree, particularly notched Izod impact strength has a more substantial increase, and illustrates that ABS/PP-g-MAH is the good compatilizer of PC/ABS alloy.
Claims (10)
1. the preparation of a PC/ABS alloy is characterized in that, adopts the compatilizer of a kind of ABS/PP grafted maleic anhydride (ABS/PP-g-MAH) as PC/ABS, and it is made by following materials of weight proportions: (%)
Polycarbonate 50～80
Acrylonitrile-styrene-butadienecopolymer (ABS) 5～60
ABS/PP grafts 5～60
Oxidation inhibitor 0.2～1.0
Lubricant 0.1～0.5
Other auxiliary agent 0.1～2.0
2. the preparation of a kind of PC/ABS alloy according to claim 1 is characterized in that, described polycarbonate is that molecular weight is the bisphenol A polycarbonate of 10000-30000.
3. the preparation of a kind of PC/ABS alloy according to claim 1 is characterized in that, acrylonitrile-styrene-butadienecopolymer (ABS), styrene content 30-65% wherein, acrylonitrile content 20-35%, butadiene content 10-50%, ABS are that letex polymerization or mass polymerization all can.
4. the preparation of a kind of PC/ABS alloy according to claim 1 is characterized in that, described ABS/PP grafts is made by following materials of weight proportions: ABS 50-70, polypropylene (PP) 20-40, maleic anhydride (MAH) 1.2-1.7, initiator 0.08-1.2, stearic acid 0.3-0.6.
5. according to the preparation of claim 1 or 4 described a kind of PC/ABS alloys, it is characterized in that described polypropylene (PP) is homopolymerization PP, block copolymerization PP and random copolymerization PP.
6. according to the preparation of claim 1 or 4 described a kind of PC/ABS alloys, it is characterized in that described initiator adopts dicumyl peroxide (DCP) or 2,5-dimethyl-2, two (tert-butyl hydroperoxide) hexanes of 5-.
7. the preparation of a kind of PC/ABS alloy according to claim 1 is characterized in that, described oxidation inhibitor is four [β-(3,5-di-tert-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester and three (2, the 4-di-tert-butylphenol) phosphorous acid ester.
8. the preparation of a kind of PC/ABS alloy according to claim 1 is characterized in that, described lubricant is an ethylene bis stearamide.
9. the preparation of a kind of PC/ABS alloy according to claim 1 is characterized in that, described other auxiliary agent can be processing aid, fire retardant, releasing agent, photostabilizer, toughner, tinting material etc.
10. the preparation method of a kind of PC/ABS alloy according to claim 1, its method is as follows:
(1) takes by weighing raw material by weight ratio;
(2) prepare the ABS/PP grafts earlier
To enter twin screw extruder behind ABS, PP, maleic anhydride (MAH), initiator, the stearic acid uniform mixing, complete processing is as follows: a district temperature 170-190 ℃, two district temperature 170-190 ℃, three district temperature 180-200 ℃, four district temperature 180-200 ℃, five district temperature 180-200 ℃, six district temperature 170-190 ℃; The residence time is 1-3 minute, and engine speed is 300 rev/mins, and pressure is 12-18Mpa.
(3) will enter twin screw extruder behind polycarbonate, acrylonitrile-styrene-butadienecopolymer (ABS), ABS/PP grafts, oxidation inhibitor, lubricant and other auxiliary agent uniform mixing, complete processing is as follows: a district temperature 220-240 ℃, two district temperature 240-250 ℃, three district temperature 240-260 ℃, four district temperature 240-260 ℃, five district temperature 240-260 ℃, six district temperature 230-250 ℃; The residence time is 1.5-2.5 minute, and engine speed 300-450 rev/min, pressure is 12-18Mpa.
(4) discharging is extruded postcooling, drying, pelletizing and is got product.
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