三聚氰胺四羟甲基硫酸磷阻燃剂的合成及其在EPS泡沫中应用

doi:10.11901/1005.3093.2017.336

材料研究学报

2018, Vol. 32

Issue (8): 584-590 DOI: 10.11901/1005.3093.2017.336

研究论文

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三聚氰胺四羟甲基硫酸磷阻燃剂的合成及其在EPS泡沫中应用

王正洲^1,²(

), 杨婷¹, 胡立飞¹

1 同济大学材料科学与工程学院上海 200092
2 先进土木工程教育部重点实验室(同济大学) 上海 200092

Preparation and Application for EPS Foam of Melamine-Bis[Tetrakis (Hydroxymethyl) Phosphonium] Sulfate Flame Retardant

Zhengzhou WANG^1,²(

), Ting YANG¹, Lifei HU¹

1 School of Materials Science and Engineering, Tongji University, Shanghai 200092, China
2 Key laboratory Advanced Civil Engineering Materials, Ministry of Education (Tongji University), Shanghai 200092, China

引用本文:

王正洲, 杨婷, 胡立飞. 三聚氰胺四羟甲基硫酸磷阻燃剂的合成及其在EPS泡沫中应用[J]. 材料研究学报, 2018, 32(8): 584-590.
Zhengzhou WANG, Ting YANG, Lifei HU. Preparation and Application for EPS Foam of Melamine-Bis[Tetrakis (Hydroxymethyl) Phosphonium] Sulfate Flame Retardant[J]. Chinese Journal of Materials Research, 2018, 32(8): 584-590.

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摘要:

使用三聚氰胺和四羟甲基硫酸磷合成三聚氰胺四羟甲基硫酸磷(MTHPS)阻燃剂,并用红外光谱(FTIR)、核磁共振谱(NMR)等手段对其结构进行了表征。采用包覆法将含有MTHPS阻燃剂的热固性酚醛树脂胶包覆在预发泡的可发性聚苯乙烯(EPS)珠粒的表面,再通过水蒸汽发泡、模压成型工艺制备出无卤阻燃的EPS泡沫材料。研究了MTHPS用量对EPS泡沫材料的阻燃性能和力学性能影响。结果表明,MTHPS用量为50 phr的阻燃EPS泡沫材料其氧指数为34.0%,达到UL 94 V-0级;随着MTHPS用量的增加,阻燃EPS泡沫材料的压缩强度和弯曲强度提高。

关键词 ：有机高分子材料, 可发性聚苯乙烯泡沫, 三聚氰胺四羟甲基硫酸磷, 阻燃

Abstract：

The flame retardant of melamine-bis[tetrakis (hydroxymethyl) phosphonium] sulfate (MTHPS) was synthesized via reflux reaction with tetrakis hydroxymethyl phosphonium sulfate and melamine as raw materials and then characterized by FTIR and NMR. Beads of pre-expandable polystyrene (EPS) were coated with the MTHPS containing thermosetting phenolic resin, and then with which as raw material, the halogen-free flame retardant EPS foam was prepared via steam foaming and molding process. The effect of MTHPS-content on the flame retardancy, mechanical properties and thermal conductivity of the EPS foams were assessed. It is found that the flame-retardant EPS foam with 50 phr MTHPS presents a limiting oxygen index 34.0% and a V-0 rating for vertical flammability test according to the UL 94 standard. The compressive strength and flexural strength of the flame retardant foam increase with the increasing MTHPS content.

Key words： organic polymer materials expandable polystyrene foam MTHPS flame retardation

收稿日期: 2017-08-31

ZTFLH:

TB324

基金资助:资助项目国家自然科学基金(U1205114)

作者简介:

作者简介王正洲,男,1963年生,教授

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https://www.cjmr.org/CN/10.11901/1005.3093.2017.336 或 https://www.cjmr.org/CN/Y2018/V32/I8/584

表1 THPSM阻燃EPS泡沫配方

图1 三聚氰胺和三聚氰胺四羟甲基硫酸磷的红外谱图

图2 三聚氰胺四羟甲基硫酸磷核磁共振碳谱

图3 三聚氰胺四羟甲基硫酸磷的合成路线图

表2 MTHPS阻燃EPS泡沫的极限氧指数和垂直燃烧测试结果

图4 泡沫样品的热释放(HRR)曲线

图5 锥形量热测试后泡沫E0、EPR和S4样品的残炭照片

图6 MTHPS添加量对阻燃EPS泡沫弯曲强度影响

图7 MTHPS添加量对阻燃EPS泡沫压缩强度影响

图8 MTHPS的TG曲线和DTG曲线

图9 泡沫样品的TGA曲线和DTG曲线

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