Enhanced flame retardancy, smoke suppression, and acid resistance of polypropylene/magnesium hydroxide composite by expandable graphite and microencapsulated red phosphorus

被引：14
作者：
Wang, Sen [1 ,2 ]
Liang, Shitong [1 ,2 ]
Wang, Kesong [2 ]
Liu, Jichun [2 ,4 ]
Luo, Jie [1 ,5 ]
Peng, Shuge [1 ,2 ,3 ,5 ]
机构：
[1] Henan Univ Sci & Technol, Sch Chem & Chem Engn, Luoyang, Henan, Peoples R China
[2] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang, Henan, Peoples R China
[3] Henan Univ Sci & Technol, Key Lab Ind Waste Resource Utilizat, Luoyang, Peoples R China
[4] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Henan, Peoples R China
[5] Henan Univ Sci & Technol, Sch Chem & Chem Engn, Luoyang 471023, Henan, Peoples R China
来源：
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY | 2023年 / 29卷 / 02期
基金：
中国国家自然科学基金;
关键词：
acid resistivity; flame retardancy; intumescent char; magnesium hydroxide; polypropylene; MAGNESIUM-HYDROXIDE; MECHANICAL-PROPERTIES; NANOCOMPOSITES; NANOPARTICLES; FLAMMABILITY;
D O I：
10.1002/vnl.21994
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Low flame retardant efficiency and poor acid resistance of filled polymer composites are two main drawbacks of magnesium hydroxide (MH) as a flame retardant (FR). To solve these problems, expandable graphite (EG) and microencapsulated red phosphorus (MRP) were introduced into polypropylene/magnesium hydroxide (PP/MH) composite by melt compounding. The obtained PP/MH/EG/MRP quadruple composite was studied regarding its fire behavior as well as acid resistance. Obvious flame retardant synergism among MH, EG, and MRP is found in PP, which diminishes the loading of FR from 63.0 to 37.5 wt% to obtain V-0 rating in UL-94 test and low smoke release. Compact intumescent char with high thermo-oxidative stability was generated on composite surface, which plays a vital role in flame retardancy. The removal of MH by acid erosion on PP/MH/EG/MRP composite surface does not affect production of intumescent char and fire behavior of this composite. The composite displays good fire retardancy, smoke inhibition, and acid resistivity concurrently. This article renders an easy and cheap route to overcome the main faults of MH.
引用
收藏
页码：395 / 409
页数：15
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