首页|多阻燃剂协同实现PP泡沫的高效阻燃改性

多阻燃剂协同实现PP泡沫的高效阻燃改性

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为提高聚丙烯(PP)泡沫的阻燃性能,以偶氮二甲酰胺(AC)为发泡剂,聚磷酸铵(APP)、双季戊四醇(PER)、三嗪大分子成炭剂(CFA)和有机倍半硅氧烷(POSS)为协同阻燃剂,通过双螺杆挤出造粒和平板硫化仪热压工艺,制备未发泡PP塑料样条以及发泡后的PP泡沫样条.通过对燃烧过程、残炭量与碳层结构分析等方面评估不同配比的PP泡沫复合材料的阻燃性能.结果表明,当AC添加质量分数为2%时,APP催化CFA和POSS来提高PER的炭层质量,形成致密碳层,提高了阻燃性能.当阻燃剂总添加质量分数为30%且APP,PER,CFA和POSS的质量比为15∶5∶8∶2时,PP泡沫复合材料的极限氧指数为32.6%,达到最高阻燃级别HF-1,形成的炭层具有优异的抑烟、隔热效果.
Multi-flame retardants synergistically achieve efficient flame retardant modification of PP foams
To improve the flame retardancy of polypropylene(PP)foam efficiently,azodicarbonamide(AC)was utilized as a blowing agent,flame retardants such as ammonium polyphosphate(APP),pentaerythritol(PER),triazine-based carbon-forming agent(CFA),and organic polyhedral oligomeric silsesquioxane(POSS)were employed to prepare unfoamed samples and foamed samples of polypropylene(PP)foam by twin-screw extrusion and pelletizing,and hot pressing with a plate vulcanizer.The combus-tion process,the amount of residual carbon,and the carbon layer structure were analyzed to evaluate the flame retardancy of PP composite foams with different ratios.The results indicate that when the AC addition is 2%,APP catalyzes CFA and POSS to improve the quality of the carbon layer of PER,forming a dense carbon layer and improving the flame retardant performance.When the total addition of flame retardant is 30%and the mass ratio of APP,PER,CFA,and POSS is 15∶5∶8∶2,the PP foam's limit oxygen index is 32.6%,the formed charcoal layer has excellent smoke suppression and heat insulation.

ammonium polyphosphatetriazine-based carbon-forming agentorganic polyhedral oligomeric silsesquiox-aneazodicarbonamidepolypropylene foamflame retardant property

王凌峰、徐百平、谈灵操

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五邑大学机械与自动化工程学院高分子材料智能制造重点实验室,广东江门 529020

聚磷酸铵 三嗪大分子成炭剂 有机倍半硅氧烷 偶氮二甲酰胺 聚丙烯泡沫 阻燃性能

国家自然科学基金国家自然科学基金广东省教育厅重点领域专项广东省教育厅重点领域专项广东省重点建设学科科研能力提升项目江门市科技计划

11972023121023062020ZDZX20512023ZDZX30392021ZDJS0962023JC01026

2024

10.3969/j.issn.1001-3539.2024.04.001

工程塑料应用
中国兵器工业集团第五三研究所 中国兵工学会非金属专业委员会　兵器工业非金属材料专业情报网

工程塑料应用

CSTPCD北大核心
影响因子：0.371
ISSN：1001-3539
年,卷(期)：2024.52(4)
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