Preparation and properties of flame⁃retarded anti⁃static polyolefin plates

doi:10.19491/j.issn.1001-9278.2022.08.004

Abstract

Abstract:

A flame⁃retarded anti⁃static polyolefin material was prepared using halogen⁃free retardant （MRP⁃1400）， carbon black， and polyethylene elastomer （POE） as additives， and the effects of these three additives on the mechanical properties of the flame⁃retarded anti⁃static material were investigated. The results indicated that the addition of MRP⁃1400 enhanced the flame⁃retardant properties of the material significantly. When 20 wt% MRP⁃1400 （corresponding to 8 wt% phosphorus）， the material reached a UL 94 V⁃0 classification in the vertical burning test and passed the alcohol blow lamp examination according to Standard MT 113⁃1995. Moreover， when 6 wt% carbon black was incorporated， the anti⁃static properties of the material fulfilled the requirements specified in Standard MT 113⁃1995. The mechanical properties of the material increased with the addition of POE. The material achieved optimal overall performance when 5 wt% POE was added， achieving notched Izod impact strength of 35 kJ/m² and elongation at break of 315 %. The material exhibited good fatigue resistance with a dynamic fatigue life over 1.2 million times.

Key words: polyolefin, flame retardant, anti?static performance, fatigue lifetime

CLC Number:

TQ325.1

LI Yafei, SUN Xiaojie, REN Yueqing, ZHANG Yinling. Preparation and properties of flame⁃retarded anti⁃static polyolefin plates[J]. China Plastics, 2022, 36(8): 23-27.

Figures/Tables 8

样品	聚烯烃^*	磷	炭黑	POE	PE⁃g⁃MAH	加工助剂^**
1^#	94	0	0	0	3	3
2^#	90	4	0	0	3	3
3^#	88	6	0	0	3	3
4^#	86	8	0	0	3	3
5^#	84	10	0	0	3	3
6^#	83	8	3	0	3	3
7^#	82	8	4	0	3	3
8^#	81	8	5	0	3	3
9^#	80	8	6	0	3	3
10^#	78	8	8	0	3	3
11^#	77	8	6	3	3	3
12^#	75	8	6	5	3	3
13^#	72	8	6	8	3	3
14^#	70	8	6	10	3	3

Tab.1. Content of each component in the samples

样品	UL 94 级别	有焰燃烧时间/s	无焰燃烧时间/s	有无熔滴现象	极限氧指数/%
1^#	—	>60	—	有	17.4
2^#	—	>60	—	有	17.7
3^#	—	>30	—	有	19.8
4^#	V⁃0	12	0	无	21.8
5^#	V⁃0	10	0	无	21.3

Tab.2. Combustion properties of composites with different flame retardant contents

Fig.1. Relationship between surface resistivity of the samples and conductive carbon black content

Fig.2. Relationship between mechanical properties of the samples and conductive carbon black content

Fig.3. Effect of POE content on mechanical properties of the samples

Fig.4. EDS microscopy， SEM image and energy spectrum of sample 12#

Fig.5. Deflection⁃number of cycles curve of the sample

Fig.6. SEM images of the samples

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