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马来酸酐接枝ABS及其应用 总被引:19,自引:2,他引:17
采用熔融法研究了马来酸酐(MAH)接枝ABS。结果表明:马来酸酐接枝率随MAH添加量或引发剂过氧化二异丙苯(DCP)的添加量垢增加而提高,但是添加量过多时,接枝率增加速率变慢;ABS接枝马来酸酐后,冲击性能明显下降,但拉伸性能变化不大;马来酸酐接枝改性ABS,增容ABS/PC合金共湿物,可提高合金的缺口抗冲击强度大1.5~2.5倍。 相似文献
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马来酸酐,苯乙双单体接枝ABS及其应用 总被引:3,自引:0,他引:3
采用熔融法了马来酸酐(MAH)和苯乙烯(St)接枝ABS。结果表明,只用MAH单体时,MAH接枝率随MAH添加量增中而提高,接枝效率一般不超过60%;用St和MAH两种单体时,在MAH添加量保持不变时,MAH接枝率随St添国量的增加而提高,但达到一定量后开始下降。用MAH和St双单体接枝改性的ABS树脂增容的ABS/PC合金与未增容的相比,制品缺口冲击强度提高1.5倍。 相似文献
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相容剂对HDPE/PC共混合金性能的影响 总被引:1,自引:0,他引:1
采用熔融接枝方法制备马来酸酐接枝高密度聚乙烯(HDPE-g-MAH)和丙烯酸接枝高密度聚乙烯(HDPE-g-AA),比较了这2种相容剂对HDPE/聚碳酸酯(Pc)共混合金体系的增容效果,着重研究了接枝单体、引发剂对HDPE接枝物的接枝率和熔体流动速率的影响及HDPE接枝物用量对HDPE/PC合金力学性能的影响。结果表明:HDPE-g-MAH相容剂的增容效果较好。用量为15份时使HDPE/PC合金缺口冲击强度提高了30%。 相似文献
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PC/PA合金的研究 总被引:2,自引:0,他引:2
研究了PC/PA合金的力学性能、流变性能和耐油性能。结果表明,自制增容剂P与SMA协同使用对PC/PA共混体系有较好的增容作用,增容后合金的冲击强度大幅度提高,同时合金仍保持较高的拉伸强度和弯曲强度。PC/PA/SMA/P合金熔体的表观粘度随剪切速率提高而下降,加工流动性得到改善。PC/PA/SMA/P合金具有较好的耐油性。 相似文献
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The impact behaviors of nanoclay filled nylon 6 (nano‐nylon 6) or nylon 6 blended with poly(acrylonitrile‐butadiene‐styrene) terpolymers (ABS) were investigated here using polybutadiene grafted maleic anhydride (PB‐g‐MA) as a compatibilizer to enhance interphase interaction. It is found that impact strength increases slightly for nano‐nylon 6/ABS blend system with the addition of compatibilizer at various ABS compositions, but increases to a certain degree for nylon 6/ABS case. Similar effects are also found with decreasing test temperature, especially at a blend composition of 80/20. These discrepancies are attributed to a different degree of available reaction sites from amine group on nano‐nylon 6 and nylon 6 as well as the rigidity of clay in deteriorating toughness. As for thermal properties, the heat distortion temperature shows marginally decrease in the nano‐nylon 6/ABS blend. Through morphology observations, the etched ABS particle sizes tend to decrease with the additions of compatibilizer for both blends, but are larger with higher contents of ABS concentrations. Those observations account for impact behaviors of the investigated blends. POLYM. ENG. SCI., 45:1461–1470, 2005. © 2005 Society of Plastics Engineers 相似文献
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The impact behaviors of nanoclay‐filled nylon 6 (nano‐nylon 6) blended with poly(acrylonitrile–butadiene–styrene) terpolymers (ABS) prepared through a twin screw mixing process were investigated here using metallocene polyethylene grafted maleic anhydride (POE‐g‐MA) as a compatibilizer to enhance the interface interaction. No clear effect of compatibilizer on the dispersion of clay and crystalline structure of nano‐nylon 6 has been observed. In view of morphology and rheological behaviors, the effect of compatibilizer on the mechanical properties could be elucidated. It is found that impact strength increases with the addition of compatibilizer at various ABS compositions. Similar effects are also observed with decreasing test temperature at the nano‐nylon 6/ABS blend composition of 80/20. As for thermal properties, the heat distortion temperature shows a marginal decrease in the nano‐nylon 6/ABS blends. Rheological behavior indicates that increased viscosity is found for the investigated compatibilized systems. Through morphology observations, the etched ABS particle sizes tend to decrease with the addition of compatibilizer for the blends, but are larger with higher contents of ABS concentrations. Those observations account for impact behaviors of the investigated blends. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 1364–1371, 2006 相似文献
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Blends of acrylonitrile-butadiene-styrene (ABS) and Nylon 6 (PA6) incorporating styrene-acrylonitrile-glycidyl methacrylate
(SAGMA) copolymer as compatibilizer have been studied across five different compositions by varying the PA6 ratio from 15 wt%
to 55 wt%. The evolution of morphology from discrete dispersed PA6 particles to phase inversion to co-continuous phases effected
due to the compatibilizer have been studied vis-à-vis preliminary melt flow analysis, viscoelastic behavior, physico-mechanical
and thermal properties of the blends. Single point viscosity measurements during melt flow analyses are indicative of a significant
increase in viscosity upon initial incorporation of PA6 followed by narrow increases with content. It is observed that while
there are gradual positive modifications in physico-mechanical properties with increasing PA6 content, the most significant
improvements are observed for room temperature izod impact strength and break elongation effected in the region of phase inversion
on to the formation of a co-continuous phase. The low temperature impact strength at −40 °C essentially remains comparable
to that of control ABS. DMTA analysis evidences partial dissolution of the blend components by the shifts of the damping peaks
(Tg) of PB rich phase, SAN and PA6. Broadening of the damping peak of PB rich phase of ABS is attributed to increasing interfacial
region due to PA6-g-SAGMA molecular layer at the interface. Thermal stability of the blends were not significantly affected
in comparison to control ABS and PA6. 相似文献
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相容剂及其在PC/ABS合金中的应用 总被引:1,自引:0,他引:1
采用水相悬浮聚合法合成了SAN-g-MAH、SAN-g-MMA、SAN-g-GMA3种相容剂,比较了3种相容剂对PC/ABS合金的增容效果,着重研究了工艺条件对接枝率的影响及相容剂用量对合金力学性能的影响。结果表明,相容剂的最大接枝率可达5.76%,添加相容剂后,PC/ABS合金的力学性能有明显提高,拉伸强度和缺口冲击强度分别可达61.91MPa和10.12kJ/m2。 相似文献
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Blends of recycled polycarbonate (PC) and acrylonitrile–butadiene–styrene (ABS) were prepared and some mechanical and morphological properties were investigated. To compatibilize these blends, ABS‐g‐(maleic anhydride) (ABS‐g‐MA) and (ethylene–vinyl acetate)‐g‐(maleic anhydride) (EVA‐g‐MA) with similar degree of grafting of 1.5% were used. To compare the effect of the type of compatibilizer on mechanical properties, blends were prepared using 3, 5 and 10 phr of each compatibilizer. A co‐rotating twin‐screw extruder was used for blending. The results showed that ABS‐g‐MA had no significant effect on the tensile strength of the blends while EVA‐g‐MA decreased the tensile strength, the maximum decrease being about 9.6% when using 10 phr of this compatibilizer. The results of notched Charpy impact strength tests showed that EVA‐g‐MA increased the impact strength of blends more than ABS‐g‐MA. The maximum value of this increase occurred when using 5 phr of each compatibilizer, it being about 54% for ABS‐g‐MA and 165% for EVA‐g‐MA. Scanning electron microscopy micrographs showed that the particle size of the dispersed phase was decreased in the continuous phase of PC by using the compatibilizers. Moreover, a blend without compatibilizer showed brittle behaviour while the blends containing compatibilizer showed ductile behaviour in fracture. © 2013 Society of Chemical Industry 相似文献
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利用(苯乙烯/丁二烯/苯乙烯)共聚物(SBS)与二烯丙基双酚A(DABPA)反应制得SBS-g-DABPA,将其用于聚碳酸酯(PC)/(丙烯腈/丁二烯/苯乙烯)共聚物(ABS)合金的增容改性。探讨了SBS-g-DABPA接枝率的影响因素及SBS-g-DABPA对PC/ABS合金力学性能的影响。结果表明,SBS-g-DABPA对PC/ABS合金具有明显的增容作用,当SBS-g-DABPA接枝率为14%、用量为3%时,PC/ABS/SBS-g-DABPA共混体系具有优异的力学性能。 相似文献
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以回收聚对苯二甲酸乙二醇(酯rPET)为基体材料,丙烯腈-丁二烯-苯乙烯共聚(物ABS)为增强材料,甲基丙烯酸缩水甘油酯接枝聚苯乙烯(PS-g-GMA)为增容剂,制备了rPET/ABS共混物。采用SEM、DSC等方法对共混物的形态结构、结晶性能和力学性能进行了表征。结果表明:与纯rPET相比,ABS增韧后的rPET缺口冲击强度和断裂伸长率分别提高了54.0%和47.2%,弯曲强度和拉伸强度略有下降,熔融温度下降了1.27℃,结晶温度升高了31.22℃,结晶速度明显加快;PS-g-GMA的加入改善了rPET/ABS共混物的两相界面结合力,细化了两相结构;与纯rPET相比,含1%PS-g-GMA的rPET/PS-g-GMA/ABS共混物的缺口冲击强度提高了72.5%断,裂伸长率提高了71.7%。 相似文献
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采用不同的橡胶种类和橡胶配比与苯乙烯、丙烯腈进行连续本体法丙烯腈丁二烯苯乙烯共聚物(ABS)中试生产,并对不同条件下的ABS产品进行微观结构和溶胶过程分析。结果表明,使用独山子低顺式聚丁二烯橡胶(50AF)制备的本体ABS产品性能全面优于上海高桥低顺式聚丁二烯橡胶(55AE)、50AF与燕山高顺式聚丁二烯橡胶(BR9004)组成的混合胶; 混合胶中,当50AF与BR9004的混合配比为7∶3时ABS产品性能更好;ABS产品冲击强度均随着胶液含量的增加而增大,熔体流动速率均随着胶液含量的增加而降低。 相似文献
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The physical properties of nylon 6/poly(acrylonitrile-butadiene-styrene) terpolymer (ABS) blends using a maleated polybutadiene
(denoted PB-g-MA) as compatibilizer were investigated. The morphology results reveal that ABS domain sizes decrease with an
increasing compatibilizer content, suggesting the good interaction between the nylon 6 matrix and the ABS dispersed phase.
Cooling conditions and compatibilizer contents strongly affect the crystalline structure of nylon 6, as determined from X-ray
diffraction and non-isothermal crystallization thermal analyses. The coexistence of α- and predominantly γ-form crystals for
the 10 phr compatibilized blends was observed. Isothermal crystallization kinetics suggests that the introduced compatibilizer
impeded the growth rate of the crystals, especially for the higher compatibilizer content. The compatibilizer was beneficial
in enhancing the thermal stability of the blends. 相似文献