CN101486825B - Preparation of weather resistant PC and ASA copolymer alloy - Google Patents
Preparation of weather resistant PC and ASA copolymer alloy Download PDFInfo
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- CN101486825B CN101486825B CN2008100659121A CN200810065912A CN101486825B CN 101486825 B CN101486825 B CN 101486825B CN 2008100659121 A CN2008100659121 A CN 2008100659121A CN 200810065912 A CN200810065912 A CN 200810065912A CN 101486825 B CN101486825 B CN 101486825B
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Abstract
A method for preparing weather resistance polycarbonate/acrylonitrile-styrene-acrylic ester copolymer alloy (PC/ASA alloy) is to prepare the PC/ASA alloy by adopting PC resin, ASA resin, SMA resin, E-EA-MAH, antioxidizer, lubricant, antiultraviolet absorbent and the like which are treated with blending and extrusion in a double screw extruder. The manufactured PC/ASA alloy has greatly increased weather resistance, high impact strength, good fluidity, good heat resistance, excellent comprehensive performance, with the poor weather resistance of original PC/ABS being improved, and the PC/ABS alloy is applicable to the places with higher requirement on weather resistance.
Description
The present invention relates to thermoplastic resin composition field in the high polymer material technology, be specifically related to the prescription and the preparation method of weathering resistance PC and ASA copolymer alloy.
Technical background:
PC/ABS is that a kind of physical strength is good, shock strength is good, the superior alloy of a kind of over-all properties of good fluidity, good heat resistance, and it has reduced the viscosity of PC, has better processed-type, has reduced the breach sensitivity of PC, has improved the stress cracking resistance of PC.Yet owing to contain undersaturated pair of key among the ABS, make the PC/ABS alloy make be subjected to the uviolizing in the daylight easily and flavescence rapidly is unfavorable for requiring life-time service under the higher environment in outdoor or the inferior weathering resistance of photoenvironment.We have developed the PC/ASA alloy of weathering resistance based on this, and ASA is that propylene is fine, vinylbenzene, its structure of acrylate terpolymer are similar to ABS, and splendid physical and mechanical properties is arranged.
In the high molecular polymer if contain two keys, then two keys are opened by the ultraviolet ray in the bigger sunlight of energy intensity easily, cause the ageing-resistant performance of high molecular polymer to descend thus, and ASA has substituted the divinyl rubber that contains unsaturated double-bond among the ABS with the acrylic rubber that does not contain unsaturated double-bond just, therefore, not only can resist degraded that uviolizing causes, wear out, fade, decomposition or variable color that the high temperature in the oxidation course of processing in the atmosphere is caused have had strong guarantee.According to test result, the ageing resistance of ASA is more than 10 times of ABS.Add an amount of photostabilizer and UV light absorber simultaneously and just can play good protective effect, promoted the anti-aging of material and weather resisteant energy thus greatly.Therefore the weathering resistance of the PC/ASA alloy of being made by PC and ASA and other additive is greatly improved.
Summary of the invention:
The preparation method who the purpose of this invention is to provide a kind of weathering resistance PC/ASA alloy.Replace ABS by the ASA that does not contain unsaturated double-bond, made weathering resistance be greatly improved.The SMA resin is a kind of multipolymer of phenylethylene-maleic anhydride, and the content of maleic anhydride is up to 18%, and the styryl among styryl and the ASA is compatible, and polar maleic anhydride base combines with PC, makes that the PC/ASA alloy phase capacitive of making is good.The adding of acrylate copolymer makes alloy keep good toughness.The adding of anti-outer uv-absorbing agent guarantees the weathering resistance of alloy.By PC/ASA good weatherability, shock strength height, good fluidity, good heat resistance that this method provides, over-all properties is superior, has improved the characteristics of PC/ABS weathering resistance difference, is adapted at weathering resistance and requires higher occasion to use.
The preparation method of a kind of weathering resistance PC/ASA alloy provided by the invention is as follows: 30-40 part PC resin, 60-70 part ASA resin, 3-8 part SMA resin, 5-10 part acrylic acid esters co-polymer, 0.1-0.5 part oxidation inhibitor, 0.2-0.5 part antiultraviolet absorption agent, lubricant 0.2-0.5 part are added twin screw extruder after high speed agitator stirs, the processing temperature of twin screw extruder is the 220-240 degree, and engine speed is 200-300 rev/min; Promptly get the PC/ASA copolymer alloy through extruding postcooling, drying, pelletizing.
The preparation method of a kind of weathering resistance PC/ASA alloy of the present invention is owing to adopt not double bond containing ASA resin, PC resin, SMA resin, acrylic acid esters co-polymer, oxidation inhibitor, lubricant, antiultraviolet absorption agent etc. to extrude preparation PC/ASA alloy by blend in twin screw extruder.The PC/ASA good weatherability of making, shock strength height, good fluidity, good heat resistance, over-all properties is superior, has improved the characteristics of PC/ABS weathering resistance difference, is adapted at weathering resistance and requires higher occasion to use.
Embodiment
Below in conjunction with embodiment, the present invention is described in more detail, but the present invention is not limited to each example of following enforcement:
PC is the PC201-15 that LG DOW chemical company produces, molecular weight 23000; ASA is the Luran S 778T that BASF AG produces; SMA is a last maritime affairs Bi Da High-tech company, acrylate toughner is the Lotader of ARKEMA company 4700, acrylate toughner is the logical KT-15 of plastic cement company of Shenyang section, oxidation inhibitor is Switzerland Ciba company 1010,168, the antiultraviolet absorption agent is the Songsorb3600 of Japanese Songyuan City company, the UV327 of Switzerland Ciba company, lubricant are that the Zhejiang brother montanic acid lubricant E of chemical company is cured.
The iso standard test is mainly pressed in main test of the present invention, melt flow rate (MFR) is by ISO1133 requirement test 260 degree/2.16Kg, tensile property is tested 50mm/min by the ISO527 requirement, and bending property ISO178 requires to test 2mm/min, and impact property is tested by the ISO179 requirement.Ultraviolet (UV) aging test is to use the auspicious detecting instrument of Shenzhen Xiang XR-QUV of company ultraviolet (UV) aging test machine, tests to be equivalent to outdoor Exposure to Sunlight one month in one day.
Embodiment 1
It is as follows to fill a prescription:
(a) PC 201-15 is 35 parts
(b) ASALuran S 778T is 57 parts
(c) SMA is 3 parts
(d) KT-15 is 5 parts
(e) antioxidant 1010 is 0.1 part
(f) oxidation inhibitor is 168 0.2 parts
(g) E wax is 0.5 part
(h) Songsorb is 3,600 0.2 parts
(i) UV327 is 0.3 part
After stirring, high speed agitator adds twin screw extruder by the prescription among the embodiment 1, the processing temperature condition of twin screw extruder is as follows: 220 ℃ of district's temperature, two district's temperature are 230 ℃, three district's temperature are 240 ℃, and four district's temperature are 240 ℃, and five district's temperature are 230 ℃, six district's temperature are 230 ℃, seven district's temperature are 230 ℃, and eight district's temperature are 230 ℃ and are the 220-240 degree that engine speed is 200-300 rev/min; Promptly get the PC/ASA copolymer alloy through extruding postcooling, drying, pelletizing.Yellowing factor is tested in the colour table and is added the adularescent toner in the ultraviolet (UV) aging test, tests to be equivalent to outdoor Exposure to Sunlight one month in one day.Performance is as shown in table 1
Table 1 embodiment 1 salient features and apparent
| The irradiation fate | 0 day | 2 days | 4 days | 6 days |
| Melt flow rate (MFR) g/10min | 12 | |||
| Tensile strength MPa | 45.21 | 45.01 | 44.21 | 43.59 |
| Flexural strength MPa | 62.37 | 62.30 | 61.37 | 59.75 |
| Notched Izod impact strength Kj/cm2 | 39.36 | 39.01 | 37.75 | 36.36 |
| Apparent colour | - | No change | Not flavescence | Not flavescence |
Embodiment 2
It is as follows to fill a prescription:
(a) PC 201-15 is 35 parts
(b) ASA Luran S 778T is 57 parts
(c) SMA is 3 parts
(d) Lotader470 is 05 parts
(e) antioxidant 1010 is 0.1 part
(f) oxidation inhibitor is 168 0.2 parts
(g) E wax is 0.5 part
(h) Songsorb is 3,600 0.2 parts
(i) UV327 is 0.3 part
After stirring, high speed agitator adds twin screw extruder by the prescription among the embodiment 2, the processing temperature condition of twin screw extruder is as follows: 220 ℃ of district's temperature, two district's temperature are 230 ℃, three district's temperature are 240 ℃, and four district's temperature are 240 ℃, and five district's temperature are 230 ℃, six district's temperature are 230 ℃, seven district's temperature are 230 ℃, and eight district's temperature are 230 ℃ and are the 220-240 degree that engine speed is 200-300 rev/min; Promptly get the PC/ASA copolymer alloy through extruding postcooling, drying, pelletizing.Yellowing factor is tested in the colour table and is added the adularescent toner in the ultraviolet (UV) aging test, tests to be equivalent to outdoor Exposure to Sunlight one month in one day.Performance is as shown in table 2.
Table 2 embodiment 2 salient featuress and apparent
| The irradiation fate | 0 day | 2 days | 4 days | 6 days |
| Melt flow rate (MFR) g/10min | 10 | |||
| Tensile strength MPa | 42.75 | 42.05 | 41.75 | 39.89 |
| Flexural strength MPa | 59.5 | 59.1 | 57.5 | 55.6 |
| Notched Izod impact strength Kj/cm2 | 47.22 | 46.5 | 45.1 | 43.22 |
| Apparent colour | - | No change | Not flavescence | Not flavescence |
Claims (1)
1. weathering resistance polycarbonate/acrylonitrile-copolymer in cinnamic acrylic ester alloy: it is characterized in that, calculate its component by mass parts:
(a) polycarbonate (PC) 30-40 part
(b) acrylonitrile-styrene-acrylic ester copolymer (ASA) 60-70 part
(c) compatilizer 3-8 part
(d) toughner 5-10 part
(e) oxidation inhibitor 0.2-0.5 part
(f) lubricant 0.2-0.5 part
(g) antiultraviolet absorption agent 0.2-0.5 part;
Wherein, described PC is middle viscosity PC, and molecular weight is between 18000～25000; Described compatilizer is one or more in ABS grafted maleic anhydride (ABS-g-MAH), PS grafted maleic anhydride (PS-g-MAH), the styrene-maleic anhydride copolymer (SMA); Described toughner is MBS (MBS), or methyl methacrylate butadi ene copolymer (MMB); Described oxidation inhibitor is four [β-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester (1010), β-(3, the 5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid (1076), (2,4 di-tert-butyl-phenyls) one or more in tris phosphite (168), two (2, the 4-di-tert-butyl-phenyl) pentaerythritol diphosphites (626); Described lubricant is ethylene bis stearic acid amide (EBS); The antiultraviolet absorption agent is one or more of UV531, UV329, UV327, UV360, Songsorb3600 in the described weathering resistance PC/ASA alloy.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100659121A CN101486825B (en) | 2008-01-17 | 2008-01-17 | Preparation of weather resistant PC and ASA copolymer alloy |
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| CN2008100659121A CN101486825B (en) | 2008-01-17 | 2008-01-17 | Preparation of weather resistant PC and ASA copolymer alloy |
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| CN101486825A CN101486825A (en) | 2009-07-22 |
| CN101486825B true CN101486825B (en) | 2011-09-21 |
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| CN102372915A (en) * | 2010-08-20 | 2012-03-14 | 哈尔滨鑫达高分子材料工程中心有限责任公司 | High impact high and high fluidity PC/ASA alloy material and its preparation method |
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| CN108219419A (en) * | 2017-12-06 | 2018-06-29 | 星威国际家居有限公司 | High-weatherability PC/ASA alloy materials and preparation method |
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