聚(环三磷腈-间苯三酚)微球的制备及其在聚酯阻燃中的应用  

Synthesis and application of poly(cyclotriphosphazene-phloroglucinol)microspheres for enhancing flame retardancy of poly(ethylene terephthalate)

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作  者:魏一 徐红[1,2,3] 钟毅 张琳萍[1,2,3] 毛志平 WEI Yi;XU Hong;ZHONG Yi;ZHANG Linping;MAO Zhiping(Key Laboratory of Science&Technology of Eco-Textile,Ministry of Education,Donghua University,Shanghai 201620,China;Shanghai Belt and Road Joint Laboratory of Textile Intelligent Manufacturing,Shanghai 201620,China;Shandong Zhongkang Guochuang Research Institute of Advanced Dyeing&Finishing Technology Co.,Ltd.,National Innovation Center of Advanced Dyeing&Finishing Technology,Taian,Shandong 271000,China)

机构地区:[1]东华大学生态纺织教育部重点实验室,上海201620 [2]上海市纺织智能制造与工程一带一路国际联合实验室,上海201620 [3]国家先进印染技术创新中心山东中康国创先进印染技术研究院有限公司,山东泰安271000

出  处:《纺织学报》2025年第1期119-129,共11页Journal of Textile Research

基  金:山东省重点研发计划(重大科技创新工程)项目(2021ZDPT03)。

摘  要:为提高聚对苯二甲酸乙二醇酯(PET)的阻燃性能,以六氯环三磷腈(HCCP)和间苯三酚为原料制备聚(环三磷腈-间苯三酚)(PCTP)微球,将PCTP微球作为阻燃剂通过物理共混方式添加到PET中制备PET/PCTP复合材料,并借助热重分析仪、锥形量热仪、热重-红外联用仪、极限氧指数仪和万能材料试验机等对PET/PCTP体系的热稳定性、阻燃性能、力学性能和阻燃机制进行分析。结果表明:向PET中添加质量分数为2%的PCTP微球所制备的PET/PCTP2.0复合材料,其极限氧指数(LOI)从24.4%增加到31.1%,且UL-94达到V-0水平;相较于PET,PET/PCTP2.0复合材料的峰值热释放速率和总热释放量均显著降低(分别下降28.7%和17.7%),断裂强力下降13.3%,仍保持较好的力学性能;PET/PCTP复合材料在燃烧过程中可快速生成致密连续的炭层,隔绝可燃物内外的热量交换,同时释放出CO 2等不燃气体,稀释PET基材周围的氧气从而实现阻燃。Objective Poly(ethylene terephthalate)(PET)is a semi-aromatic polyester known for its high performance and low cost.When considering fire safety requirements,the high flammability and serious melt-dripping behaviors during PET combustion restrict its application in many fields.In order to overcome these shortcomings,various types of flame retardants are added to PET.In recent years,various non-halogen flame retardants and high-temperature resistant materials have been developed using hexachlorocyclotriphosphazene(HCCP).The proposed method is put forward for addressing the issues of flammability and droplet melting of PET.Methods HCCP and phloroglucinol as monomers were selected to synthesize highly crosslinked poly(cyclotriphosphazene-phloroglucinol)(PCTP)microspheres through the precipitation polymerization method.PCTP microspheres containing flame retardant elements P and N were incorporated into the PET matrix through melt blending.The influences on flame retardancy,mechanical properties,and the flame retardancy mechanism of PCTP/PET composite were investigated.Results The synthesized PCTP microspheres was characterized.For PET,its temperature of initial decomposition(T 5%)is 402℃.After incorporating various components of PCTP microspheres into PET,the T 5%of the compos ites decreased to 390.9,384.8,379.2 and 365.6℃,respectively,indicating that PCTP microspheres can catalyze the thermal degradation of PET.PET has the lowest limit oxygen index(LOI value),and the UL-94 grade is the worst,with 24.4%and V-2,respectively.A significant phenomenon of melt dripping can be observed during combustion.After adding PCTP microsphere flame retardant,the flame retardant performance of the material was enhanced.Starting from PET/PCTP2.0(adding 2%of PCTP),all flame retardant composites with UL-94 grade achieved V-0,and the droplet phenomenon during combustion was minimized.By incorporating 2%PCTP microspheres into PET,the LOI value of the composite was rapidly increased to 31.1%,which is higher than that of PET(24.4%),and

关 键 词:阻燃剂 熔融共混 聚对苯二甲酸乙二醇酯 聚磷腈 聚(环三磷腈-间苯三酚)微球 

分 类 号:TS195.2[轻工技术与工程—纺织化学与染整工程]

 

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