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巯基乙酸钡的合成及其应用性能研究 总被引:1,自引:1,他引:0
以巯基乙酸和氢氧化钡为原料,合成了巯基乙酸钡[简称Ba(TG)]。对产品进行了红外光谱分析及其物化常数检测,并将它与硫醇锑Sb(IOTG)3)复配添加到聚氯乙烯(PVC)中,通过热老化箱实验法,刚果红试纸法及热重法等多种方法对其PVC复配系统的热稳定性能进行了综合评价,结果表明,巯基乙酸钡与硫醇锑之间有着显著的协同作用,它不仅能降低硫醇锑在PVC热稳定剂中的用量,而且大大提高了硫醇锑的长期耐热性。 相似文献
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二(巯基乙酸异辛酯)钡的合成及应用 总被引:4,自引:0,他引:4
以巯基乙酸异辛酯和氢氧化钡等为原料合成了二(巯基乙酸异辛酯)钡[简称Ba(IOTG)2],对产品进行了红外光谱分析及熔点、热分解温度、钡含量等物化常数分析;并将它与硫醇锑复配添加到聚氯乙烯(PVC)中,通过热老化箱实验法、刚果红试纸法及热重法等多种方法对产品及其PVC复配系统的热稳定性能进行了研究。 相似文献
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二(巯基乙酸)钡的合成及其应用性能研究 总被引:4,自引:0,他引:4
以巯基乙酸和氢氧化钡等为原料合成了二(巯基乙酸)钡,试验选择了其优惠工艺条件。对产品进行了红外光谱分析及其物化常数的检测,并研究了它与有机锑复配时的聚氯乙烯(PVC)塑料中的热稳定性能。 相似文献
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金属皂类热稳定剂对软质PVC脱氯化氢反应的影响 总被引:5,自引:0,他引:5
本实验通过刚果红法研究金属皂类热稳定剂硬脂酸钙、硬脂脂锌、硬脂酸钡在软质PVC体系中单独使用、两两混合、三者混合使用时的热管理性能以及协同稳定性能.重点研究热稳定剂的用量对软质PVC刚果红试纸初始变色时间和初始变色温度的影响.结果表明:在软质PVC体系中单独使用金属皂类热稳定剂时软质PVC的热稳定性能不好;两两混合时硬脂酸锌/硬脂酸钡按1:2混合和硬脂酸锌/硬脂酸钙按1:2混合时软质PVC体系热稳定性能比硬脂酸锌/硬脂酸钡按1:1和2:1以及硬脂酸锌/硬脂酸钙按1:1、2:1、1:3、3:1混合时要好;三者混合时硬脂酸钙/硬脂酸锌/硬脂酸钡按1:1:1混合时软质PVC体系热稳定性能较好,比两两混合使用时好,同时能有效的抑制软质PVC体系初期着色现象,是软质PVC体系的较佳热稳定剂. 相似文献
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制备了新型稳定剂,比较了新型稳定剂对PVC试样的力学性能和热稳定性能的影响,与Ca/Zn体系和Pb/Ba体系稳定体系相比,新型稳定剂具有优异的热稳定性,对PVC的力学性能影响不大,能取代铅、镉、钡等金属盐类稳定剂,应用前景良好. 相似文献
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通过系列配方试验,对乙酰丙酮镁与钙/锌稳定体系的配合效应以及某些抗氧剂、W—二元醇、有机锡对PVC钙/锌体系的热稳定性能的影响进行了研究,并与PVC钡/镉稳定体系进行了比较,同时获得了高热稳定性的PVC钙/锌/镁稳定体系的配方。 相似文献
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An effective stabilizing system for poly (vinyl chloride) (PVC)/clay composites was established. Different types of stabilizers, i.e., organotin, calcium/zinc, barium/zinc, and an epoxy costabilizer, were investigated. The combination of the organotin stabilizer and the epoxy costabilizer was the most effective stabilizing system. Different grades of Cloisite nanoclays were investigated. Cloisite Na did not cause premature degradation of PVC. Cloisite 10A strongly accelerated the degradation of PVC because of the presence of excess surfactant, while a PVC/Cloisite 30B system showed much better thermal stability because there was less organic impurity in the Cloisite 30B. Phosphonium‐modified clays were also prepared. They showed better thermal stability than ammonium‐modified clays, but the drying conditions still need to be optimized in order to produce a dispersible clay powder. J. VINYL ADDIT. TECHNOL., 2011. © 2011 Society of Plastics Engineers 相似文献
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Thermal degradation of poly(vinyl chloride) (PVC) was studied in nitrogen atmosphere in the presence of rubber seed oil and epoxidized rubber seed oil, barium and lead soaps of rubber seed oil, and epoxidized seed oil at various temperatures. The rate of dehydrochlorination at 1% degradation and the time required to attain 1% degradation were used to assess the effect of the thermal susceptibility of PVC to dehydrochlorination. It was found that epoxidized rubber seed oil, the metal soaps of rubber seed oil, and epoxidized rubber seed oil markedly enhance the thermal stability of PVC. The order of increasing stabilizing influence was metal soaps of epoxidized rubber seed oil > metal soaps of rubber seed oil > epoxidized rubber seed oil > rubber seed oil. © 1993 John Wiley & Sons, Inc. 相似文献
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Hiroshi Sakai Michael J. Cima Wendell E. Rhine 《Journal of the American Ceramic Society》1993,76(12):3136-3140
Adsorption of sulfonic acid doped poly(vinyl chloride) (PVC–SO3 H) and poly(vinyl chloride) (PVC) on barium ferrite particles is described. The maximum surface adsorption of PVC–SO3 H on barium ferrite was twice that of PVC. Surface chemical interaction between the sulfonic acid groups and barium ferrite surfaces was examined by adsorption of toluene-4-sulfonic acid. Sulfonic acid groups were found to adsorb selectively on both Ba–OH and Fe–OH sites by an acid–base interaction. Increasing the hydroxyl content on the barium ferrite surface creates increased dispersion stability in the presence of sulfonic acid doped PVC. 相似文献
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龙旭芬 《现代塑料加工应用》1992,(3):45-48
有机锡是所有聚氯乙烯(PVC)热稳定剂中性能最好的一种,硫醇锡是有机锡热稳定性能最好和透明度最高的一类。本文所阐述的就是无毒型——酯基硫醇锡的工艺流程及其优缺点,并对酯基硫醇锡的原材料要求及其研制的工艺过程和技术指标作了说明。经天津、杭州、福建三明等厂家试用和测试,该产品在加工性和产品质量方面均能满足PVC透明硬片的生产要求。 相似文献
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合成了一种用于PVC的新型的Ca-Zn热稳定剂。通过刚果红法、混炼机研究了新型液体Ca—Zn热稳定剂对PVC的静、动态热稳定性的影响,并研究了其用于PVC制品时的透明性能。结果表明,新型液体Ca—Zn热稳定剂应用于PVC的动态、静态热稳定性及透明性均好于市售的液体Ca—Zn热稳定剂。 相似文献