Shanghai Daoqin Plastics Co., Ltd.

(more)磷 acid ester type as is flame retardant in polymer plastics flame retardant application in important 位. for/regarding soft 质PVC flame retardant increase agent main/primary is various 芳基磷 acid ester and 芳基一烷基磷 acid ester. has used as soft 质PVC flame retardant increase agent acid ester content versus 近, in 7．8％-8．6％ between. it used for substitute/replace soft 质PVC in separation 邻苯二甲 acid ester and other ester type increase agent, can make products flame retardant property improve/increase, other property can 恶化. has 文献报道, 三芳基磷 acid ester flame retardant PVC tool has relatively high oxygen index (LOI) and elastic property modulus, 而
烷基二芳基磷 acid ester flame retardant PVC oxygen index (LOI) and elastic property modulus relatively low, this is is more 芳基磷 acid ester flame retardant property relatively high 而柔顺 property relatively low 之故. but also, upper 烷基取代基也 for acid ester flame retardant property and property has effect/influence. acid ester plastics flame retardant PVC点燃 time relatively short, 且差别不 is very large, in 10～20S between, this is is acid ester relatively easy 挥发, in relatively low temperature degree lower hot understanding 之故. in addition, K．S．Annakutty and other research more acid ester for/regarding soft 质PVC flame retardant 效果. table/sheet 明: PVC／邻苯二甲 acid ester (DBP)／ low separation quality acid ester (包括 various more acid ester, acid ester TEP, acid 三甲苯 ester TCP)(5o／4o／lo) in, more acid ester in, can promote PVC formed 炭, formed rate its in content increase increase. is various more acid ester PVC in hot heavy data upper has large different. hot heavy experiment/testing table/sheet 明. 1EP, TCP in make PVC is and more acid ester PVC不太一样, basic promote PVC formed 炭, in 550℃时PVC会完 full heavy. another. and TEP, TCP versus ratio ．
more acid ester in can more has 效 抑 made PVC hot oxidation degradation. has Sample oxygen index (LOI) large separation in 25～27 between, and mono acid ester PVC versus ratio, more acid ester PVC has more good flame retardant property. in different more acid ester PVC comparison in, more acid ester in has 卤素时, oxygen more high. 而烷基 more acid ester for PVC flame retardant 效果也 need good 于芳基 more acid ester. another, in acid ester increase PVC in 不适于 add oxidation 二锑(Sb=03). has 文献报道, this formulation 会导致 versus 反 协同 function, reduce system flame retardant property.

pom plastics raw materials POM/807 DEL/ USA RTP