阻燃热塑性弹性体加工过程中的性能变化
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摘要
通过密炼法加工含有聚酯/甲基次磷酸铝/三聚氰胺聚磷酸盐(TPEE/AMP/MPP)的热塑性弹性体,在保持体系组成恒定的条件下,考察了加工温度和加工次数对热塑性弹性体系阻燃性能、力学性能、热稳定性和结晶性的影响。结果表明:当AMP/MPP在体系中质量为22%,AMP/MPP质量比为3∶1时,225℃密炼20 min,材料垂直燃烧测试可达到UL94 V-0级;提高加工温度和密炼次数,材料的断裂伸长率增加,在225℃条件下密炼3次,每次20 min,材料的断裂伸长率可达到45. 45%。XRD以及差式扫描量热分析(DSC)结果表明,加工方式的改变并未改变材料的结晶方式,但降低了TPEE的结晶度和晶体的规整性。此外,增加加工次数与温度能提高材料的热稳定性和氧指数。
Thermoplastic elastomer composed of polyester,methyl phosphite,melamine pyrophosphate(TPEE/AMP/MPP) flame-retardant were processed by internal mixing. The influence of mixture temperature and frequency on the performance including flame retardancy,mechanical properties,thermostablity and crystallinity of formulations were investigated when the formulation of the system was kept constant. The results showed that when the total dosage of the AMP and MPP was kept at 22%,and the weight ratio of AMP and MPP was 3: 1,the best flame retardancy was achieved and the vertical combustion test of the samples passed the UL94 V-0 ratio after formulation was milled at 225 ℃ for 20 min. The elongation of the sample was improved with the milling cycles increasing. The elongation of 45. 45% was obtained after formulation was milled 3 times at 225 ℃ with 20 min per time. The results from XRD and DSC showed that milling temperature and times had no influence on the crystallization behavior of the TPEE,but the degree of the crystallization and regularity of the crystal changed with the processing mode. In addition,the thermal stability and the limited oxygen index of the sample were improved by increasing processing cycles.
Thermoplastic elastomer composed of polyester,methyl phosphite,melamine pyrophosphate(TPEE/AMP/MPP) flame-retardant were processed by internal mixing. The influence of mixture temperature and frequency on the performance including flame retardancy,mechanical properties,thermostablity and crystallinity of formulations were investigated when the formulation of the system was kept constant. The results showed that when the total dosage of the AMP and MPP was kept at 22%,and the weight ratio of AMP and MPP was 3: 1,the best flame retardancy was achieved and the vertical combustion test of the samples passed the UL94 V-0 ratio after formulation was milled at 225 ℃ for 20 min. The elongation of the sample was improved with the milling cycles increasing. The elongation of 45. 45% was obtained after formulation was milled 3 times at 225 ℃ with 20 min per time. The results from XRD and DSC showed that milling temperature and times had no influence on the crystallization behavior of the TPEE,but the degree of the crystallization and regularity of the crystal changed with the processing mode. In addition,the thermal stability and the limited oxygen index of the sample were improved by increasing processing cycles.
引文
[1]王强,梁爽,张晓东,等.浅析TPEE的性能、应用及发展趋势[J].科技创新与应用,2013(23):139.
[2]卜雅萍,王澜.热塑性弹性体发展现状[J].广东塑料,2005(8):17-21.
[3]安文秀.阻燃聚烯烃热塑性弹性体研究进展及相关阻燃法规[J].塑料科技,2014,42(4):133-134.
[4]王靖宇,许博,邱勇,等.阻燃剂次膦(磷)酸盐的研究进展[J].塑料工业,2014,42(9):5-10.
[5]林斌,张子男,张洪斌.热塑性弹性体的无卤阻燃研究进展[J].中国塑料,2013,27(4):1-5.
[6]杨尚军.阻燃热塑性聚氨醋弹性体的性能研究[J].消防科学与技术,2016,35(10):1447-1448.
[7]李桂保,张建峰.我国重载铁路使用热塑性弹性体轨下垫板的探讨[J].铁道建筑,2007(10):82-84.
[8]罗道友,朱笑初,景肃,等.高性能热塑性聚酯弹性体(TPEE)的研究开发与应用[J].化工新型材料,2007,35(s1):1-6.
[9] BARRAU S,VANMANSART C,MOREAU M,et al. Crystallization behavior of carbon nanotube-polylactide nanocomposites[J].Macromolecules,2011,44(16):6496-6502.
[10]闰明涛,李刚,郭丽洁. PTT/TPEE共混合金的热性能和结晶形态[J].高分子材料科学与工程,2011,27(11):57-60.
[11]叶盛京.复合阻燃体系在热塑性弹性体中的应用研究[J].化学工程与装备,2013(10):33-34.
[12]张莉琼,涂志刚,刘晓艳,等. DB-Mg O交联体系对PVC/CR共混型热塑性弹性体性能的影响[J].塑料,2013,42(3):59-60.
[13]吴唯,钟宇华,吴仁,等.磷-氮阻燃剂与酚醛成炭剂复配阻燃热塑性聚醚醋弹性体[J].高分子材料科学与工程,2015,31(1):153-155.
[14]奚溪,张群朝,赵辉,等.卤锑阻燃体系对热塑性聚酯弹性体性能的影响[J].工程塑料应用,2013,41(5):82-83.
[15]韩新宇,杨丽,毕成良,等.烷基次膦酸盐作为阻燃剂的应用研究[J].天津化工,2009,23(2):12-15.
[16]陈海婷,冯震,周赞斌.无卤阻燃苯乙烯类热塑性弹性体研究应用进展[J].化工新型材料,2011,39(4):43-45.
[17]崔锦峰,王心远,郭永亮,等. P元素杂化本征阻燃热塑性聚氨酯弹性体的制备及其性能研究[J].功能材料,2015,46(8):8050-8053.
[18]谭逸伦,彭治汉.阻燃SEBS热塑性弹性体研究进展[J].弹性体,2013,23(4):68-72.
[19]戴坤添,安瑛,王强,等.微纳层叠共挤对EPDM/PP热塑性弹性体力学性能的影响[J].塑料,2016,45(3):36-38.
[20]王路.聚合物结晶行为影响因素的研究[J].陕西科技大学学报:自然科学版,2008,26(5):76-79.
[2]卜雅萍,王澜.热塑性弹性体发展现状[J].广东塑料,2005(8):17-21.
[3]安文秀.阻燃聚烯烃热塑性弹性体研究进展及相关阻燃法规[J].塑料科技,2014,42(4):133-134.
[4]王靖宇,许博,邱勇,等.阻燃剂次膦(磷)酸盐的研究进展[J].塑料工业,2014,42(9):5-10.
[5]林斌,张子男,张洪斌.热塑性弹性体的无卤阻燃研究进展[J].中国塑料,2013,27(4):1-5.
[6]杨尚军.阻燃热塑性聚氨醋弹性体的性能研究[J].消防科学与技术,2016,35(10):1447-1448.
[7]李桂保,张建峰.我国重载铁路使用热塑性弹性体轨下垫板的探讨[J].铁道建筑,2007(10):82-84.
[8]罗道友,朱笑初,景肃,等.高性能热塑性聚酯弹性体(TPEE)的研究开发与应用[J].化工新型材料,2007,35(s1):1-6.
[9] BARRAU S,VANMANSART C,MOREAU M,et al. Crystallization behavior of carbon nanotube-polylactide nanocomposites[J].Macromolecules,2011,44(16):6496-6502.
[10]闰明涛,李刚,郭丽洁. PTT/TPEE共混合金的热性能和结晶形态[J].高分子材料科学与工程,2011,27(11):57-60.
[11]叶盛京.复合阻燃体系在热塑性弹性体中的应用研究[J].化学工程与装备,2013(10):33-34.
[12]张莉琼,涂志刚,刘晓艳,等. DB-Mg O交联体系对PVC/CR共混型热塑性弹性体性能的影响[J].塑料,2013,42(3):59-60.
[13]吴唯,钟宇华,吴仁,等.磷-氮阻燃剂与酚醛成炭剂复配阻燃热塑性聚醚醋弹性体[J].高分子材料科学与工程,2015,31(1):153-155.
[14]奚溪,张群朝,赵辉,等.卤锑阻燃体系对热塑性聚酯弹性体性能的影响[J].工程塑料应用,2013,41(5):82-83.
[15]韩新宇,杨丽,毕成良,等.烷基次膦酸盐作为阻燃剂的应用研究[J].天津化工,2009,23(2):12-15.
[16]陈海婷,冯震,周赞斌.无卤阻燃苯乙烯类热塑性弹性体研究应用进展[J].化工新型材料,2011,39(4):43-45.
[17]崔锦峰,王心远,郭永亮,等. P元素杂化本征阻燃热塑性聚氨酯弹性体的制备及其性能研究[J].功能材料,2015,46(8):8050-8053.
[18]谭逸伦,彭治汉.阻燃SEBS热塑性弹性体研究进展[J].弹性体,2013,23(4):68-72.
[19]戴坤添,安瑛,王强,等.微纳层叠共挤对EPDM/PP热塑性弹性体力学性能的影响[J].塑料,2016,45(3):36-38.
[20]王路.聚合物结晶行为影响因素的研究[J].陕西科技大学学报:自然科学版,2008,26(5):76-79.