有机硅微球协同膨胀型阻燃剂改性HDPE复合材料的制备与性能研究

蔡安惠, 宋立新, 陆遥, 李娟

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塑料科技 ›› 2024, Vol. 52 ›› Issue (03) : 55-61. DOI: 10.15925/j.cnki.issn1005-3360.2024.03.011
加工与应用

有机硅微球协同膨胀型阻燃剂改性HDPE复合材料的制备与性能研究

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Preparation and Performance Study of HDPE Composites Modified by Organosilicon Microspheres Synergies Intumescent Flame Retardant

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摘要

采用焦磷酸哌嗪（PAPP）和三聚氰胺氰尿酸盐（MCA）组成膨胀型阻燃剂（IFR），引入有机硅微球（SRB）作为协效剂，用于提高高密度聚乙烯（HDPE）的阻燃性能。通过垂直燃烧（UL-94）和氧指数（LOI）及锥形量热（Cone）测试研究复合材料的阻燃性能，结果表明：引入1%的SRB后，只需添加18%的IFR就能使P-5复合材料实现UL-94 V-0等级，且最大热释放速率（pHRR）和总热释放量（THR）较纯HDPE分别下降77.6%和16.7%。SRB促进IFR成炭，改善了炭层的质量。IFR降低了HDPE的力学性能，但SRB提升了HDPE/IFR体系的拉伸模量。

Abstract

The intumescent flame retardant (IFR) composed of piperazine pyrophosphate (PAPP) and melamine cyanurate (MCA) was used to improve the flame retardancy of high density polyethylene (HDPE) by introducing silicone microspheres (SRB) as synergist. The flame retardant properties of the composites were studied by vertical combustion (UL-94), oxygen index (LOI) and cone calorimetry (Cone) tests. The results showed that the P-5 composite could achieve UL-94 V-0 grade by adding only 18% IFR with 1% SRB, and the maximum heat release rate (pHRR) and total heat release (THR) decreased by 77.6% and 16.7% respectively compared with pure HDPE. SRB promoted the formation of carbon in IFR and improved the quality of carbon layer. IFR decreased the mechanical properties of HDPE, but SRB increased the tensile modulus of HDPE/IFR system.

关键词

膨胀型阻燃剂 / 有机硅微球 / 高密度聚乙烯 / 高质量炭层

Key words

Intumescent flame retardant / Silicon microspheres / High density polyethylene / High-quality carbon layer

中图分类号

TB332

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蔡安惠 , 宋立新 , 陆遥 , 等. 有机硅微球协同膨胀型阻燃剂改性HDPE复合材料的制备与性能研究. 塑料科技. 2024, 52(03): 55-61 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.03.011
CAI An-hui, SONG Li-xin, LU Yao, et al. Preparation and Performance Study of HDPE Composites Modified by Organosilicon Microspheres Synergies Intumescent Flame Retardant[J]. Plastics Science and Technology. 2024, 52(03): 55-61 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.03.011

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基金

宁波市科技创新2025重大专项(2022Z113)
宁波市自然科学基金(2021J149)
辽宁省教育厅科学研究项目(LQ2020008)

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