共查询到20条相似文献,搜索用时 125 毫秒
1.
文中介绍了几种阻燃耐候ABS树脂的制备方法,提出了用ASA树脂与ABS树脂做基体树脂掺混改性制备阻燃耐候合金材料,通过添加一定量的阻燃剂、光稳定剂、紫外线吸收剂及其他助剂制备出了阻燃性优良,耐候性好的ABS/ASA合金树脂. 相似文献
2.
3.
通过考察老化前后色差的变化,研究了耐候剂、色粉、橡胶种类对ASA树脂耐候性的影响。结果表明,受阻胺光稳定剂的加入明显提高了ASA树脂的耐候性,复配苯并三唑类紫外线吸收剂,耐候性可进一步提升。黑色和白色ASA耐候性相对更好,而红色的ASA则由于有机色粉的迁移析出,耐候性较差。AES高胶粉的加入对ASA改性材料的耐候性影响很小,ABS高胶粉的加入在短期内对ASA改性材料的耐候性影响不大,但对其中长期耐候性影响较明显。通过对比表面显微IR谱图,发现ASA树脂老化变色主要是由于生成了含羰基的芳酮等有色基团所致。 相似文献
4.
5.
通过一年的自然大气曝露试验和1000小时氙灯人工加速老化试验,对经稳定的ABS、ABS/PVC合金、耐候ASA老化前后的颜色变化和悬臂梁缺口冲击强度保持率进行比较,可以得出结论:ABS/PVC合金的耐候性能与经稳定ABS相比有大幅度提高;在一定时间内,颜色稳定性和悬臂梁缺口冲击强度保持率与ASA相近。 相似文献
6.
7.
8.
介绍改性塑料AES,ASA,耐候PP的耐性性能和其它性能,以及应用于空调器室外机壳的可行性与经济性。 相似文献
9.
10.
ASA/PVC共混改性技术在PVC彩色共挤型材加工中应用研究 总被引:1,自引:0,他引:1
本文概述了ASA/PVC共混改性彩色共挤型材的制备工艺,分析讨论了不同配比共混体系对共挤加工性能、材料力学性能以及材料耐候性能的影响。 相似文献
11.
研究了改性剂种类及其含量对(丙烯腈/苯乙烯/丁二烯)共聚物(ABS)力学性能的影响.结果表明,ABS/(丙烯腈/苯乙烯/丙烯酸酯)共聚物(ASA)共混体系的冲击强度最高;ABS/ABS胶粉共混体系的缺口冲击强度最高;ASA和ABS胶粉对ABS拉伸强度的影响最小.(苯乙烯/丁二烯/苯乙烯)嵌段共聚物(SBS)的质量分数为25%时,ABS的断裂伸长率最高.扫描电子显微镜观察发现,ABS/ABS胶粉共混试样断面发生的屈服程度较大.加入少量相容剂,ABS的力学性能并不能得到明显改善. 相似文献
12.
In order to improve the weatherability of acryonitrile—styrene—butadiene rubber graft polymer (ABS resin), an attempt was made to develop a resin (AAS resin) in which acrylic rubber of good weatherability was used instead of butadiene rubber. First, by copolymerizing dicyclopentenyl-methacrylate (DCP-MA,3%) with butyl acrylate, crosslinked acrylic rubber was obtained. This also introduced grafting sites into the rubber. Next, methods of graft copolymerizing styrene and acrylonitrile with this rubber were examined. An emulsion–suspension polymerization method was developed in which the initial stage of the polymerization, emulsion polymerization, changed into suspension polymerization during the process. By this method of polymerization, rubber particles were combined and enlarged, bringing about a graft-type resin with high impact resistance. This polymerization method is industrially useful because particle-shaped resins are obtained without the need of a salting-out process. The AAS resin, obtained in this way, has much improved weatherability over ABS resin and shows strength equal to that of ABS resin. © 1992 John Wiley & Sons, Inc. 相似文献
13.
郭涛 《合成材料老化与应用》2014,(1):46-49
分别研究了玻璃纤维、AS树脂和ASA高胶粉对玻纤增强ASA材料(GFASA)性能的影响。结果表明,相对单丝直径13μm玻纤,10μm和7μm玻纤制备的GFASA材料力学性能更优异;AS树脂的AN含量越高,材料的缺口冲击强度越高;ASA高胶粉用量从20%增加至25%时,材料的韧性提高明显。氙灯老化测试表明,增强ASA材料相对增强ABS材料(GFABS)的耐候性具有明显优势。 相似文献
14.
15.
研究了聚氯乙烯/丙烯睛-丁二烯-苯乙烯三元共聚物(PVC/ABS)塑料合金的耐候性、ABS与PVC的相容性、力学性能和阻燃性能。试验结果表明,PVC的加入可有效提高ABS的耐候性,PVC/ABS合金体系在ABS与PVC不同比例时均有良好的相容性;在一定区域内合金体系力学性能会出现极大值,极值随ABS和PVC类型不同,出现位置亦不同;PVC的加入可明显提高ABS的极限氧指数(LOI),但要达到UL94V-0级阻燃性必须添加阻燃剂。 相似文献
16.
17.
18.
通过乳液聚合制备了橡胶粒子尺寸为64~420 nm的丙烯腈-丁二烯-苯乙烯(ABS)共聚物.然后将其与SAN-T树脂熔融共混制备橡胶质量分数为15%的ABS树脂.研究了橡胶粒子尺寸对ABS树脂力学性能影响和材料内部形态结构.结果表明:随着橡胶粒子尺寸的增加ABS树脂的冲击韧性提高.当橡胶粒子尺寸在320 nm时,拉伸强度达到最大,ABS树脂的综合性能达到最好.粒子尺寸在64~110 nm时,橡胶粒子在基体内部发生团聚,材料发生脆性断裂.当橡胶粒子尺寸在216~420 nm时,材料主要以韧性断裂为主,发生脆韧转变.具有双峰分布ABS-110nm/ABS-275 nm共混物大、小橡胶粒子间发生明显的协同作用. 相似文献
19.
《Polymer-Plastics Technology and Engineering》2013,52(5):815-832
ABSTRACT The effect of rubber content of poly (acrylonitrile butadiene styrene) (ABS) on compatibility and properties of polycarbonate (PC)/ABS blend systems has been investigated. The rheological, mechanical, physical, and thermal properties of PC/ABS blend systems containing ABS of different rubber content were studied. The reduced torque data on Torque Rheocord indicated improved processability of PC by addition of ABS, however, in ABS-rich compositions, higher rubber content reduces the extent of improvement. The tensile strength of PC decreased with addition of ABS to it but PC-rich compositions have a nearly additive response. The deviation form additivity for blends having higher rubber ABS was more pronounced. However, the impact strength of blends having higher rubber ABS were higher than other types and showed a positive deviation from additivity with variation in compositions. The blends containing ABS with lower rubber content showed a single glass-transition temperature (Tg) in differential scanning calorimetry studies (DSC) in the whole composition range indicating miscibility. Although two Tgs, one associated with PC phase and one with ABS phase, were observed for blends containing high rubber ABS, the shift in Tgs with respect to pure component values indicates partial miscibility. The decrease in the extent of shift with increase of ABS in these blends indicates undesirable phase separation due to poor adhesion of higher level of rubber content. 相似文献
20.
采用PB-g-SAN和SBR-g-SAN两种弹性体粒子分别与SAN树脂熔融共混,制得了一系列ABS树脂,研究了ABS树脂的形态结构和力学性能,结果发现,PB和SBR橡胶粒子均匀地分散在SAN基体中,其径分别为0.28μm和0.05μm左右。力学性能结果表明,在SAN树脂中随着PB-g-SAN含量的增加,ABS的冲击强度不断提高,而SBR小橡胶粒子不能增韧SAN树脂,但当SAN树脂中含有15%的PB-g-SAN共聚物时,随着SBR-g-SAN含量的增加,ABS树脂的冲击强度不断提高,SBR-g-SAN这种小橡胶粒子又表现出良好的增韧作用。 相似文献