CN103772789A - 阻燃聚烯烃树脂组合物及其制备方法和阻燃管材 - Google Patents

阻燃聚烯烃树脂组合物及其制备方法和阻燃管材 Download PDF

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CN103772789A
CN103772789A CN201410011303.3A CN201410011303A CN103772789A CN 103772789 A CN103772789 A CN 103772789A CN 201410011303 A CN201410011303 A CN 201410011303A CN 103772789 A CN103772789 A CN 103772789A
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polyolefin resin
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李碧英
张泽江
兰彬
卢国建
张玉才
刘松林
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Sichuan Fire Research Institute of Emergency Management Department
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Abstract

本发明公开了一种阻燃聚烯烃树脂组合物及其制备方法和由该阻燃聚烯烃树脂组合物制成的阻燃管材。本发明的阻燃聚烯烃树脂组合物包括如下重量份的成分:聚烯烃树脂100份、溴锑系复合阻燃剂30~85份、树脂改性剂2~20份和加工助剂0.3~1.5份。本发明的阻燃聚烯烃树脂组合物制备的管材具有较高的耐热性(材料维卡软化温度可达到140℃以上)、较高的阻燃性能(氧指数大于32以上)、垂直燃烧达到V0级、烟密度SDR小于75及较好的耐热水性能,耐低温性能和长期静液压性能,寿命长、不结垢、可热熔连接因外力损坏后的管材等优点,可用于中央空调管道系统、工业给水排水管道等制品。

Description

阻燃聚烯烃树脂组合物及其制备方法和阻燃管材
技术领域
本发明属于消防技术领域,具体涉及一种阻燃聚烯烃树脂组合物及其制备方法和阻燃管材。
背景技术
现代人由于生活质量的提高,对其生活环境的要求也与日俱增。而与其最常接近的生活环境也就是办公室和自身住家。在办公室和家庭里皆有装潢和造景,在这些装潢和造景的背后装有中央空调管道、给排水管道等。这些中央空调管道和给排水管道的规则和种类非常繁多,有金属管材、非金属管材以及复合管材。然而金属管材易生锈腐蚀、安装不方便、成本高等缺点而不受欢迎。目前市场上90%以上的非金属管材都是PP-R(无规共聚聚丙烯)、PE(聚乙烯)管材,而PP-R和PE管材又是一种易燃性材料,其氧指数仅为17~18%,燃烧后成炭率也很低,并且燃烧时像蜡烛一样产生融滴,而这些融滴又扩散继续燃烧,从而带动其他建筑材料的燃烧。这对民用建筑的防火消防是一重大安全隐患。
专利文献CN201210023684.8公开了一种输送温泉用的耐高温塑料管材,其采用如下配方:60~69重量份的聚对苯二甲酸乙二醇酯回收瓶料、6.5~10.5重量份乙烯丙烯酸乙酯共聚物、23~30重量份的乙烯-辛烯嵌段型共聚物、0.5~0.9重量份的氧化锌和0.7~1.2重量份的三(2,4-二叔丁基苯基)亚磷酸酯。该管材未经过阻燃处理,阻燃性能较差,不具有防火安全性能。
专利文献CN200610144023.5公开了一种增强增韧阻燃聚烯烃树脂组合物。以聚烯烃树脂为100重量份数计,包含有以下组份:溴锑系阻燃剂9~20重量份数、协同阻燃剂3~8重量份数、抗熔滴落剂3~12重量份数、短切玻璃纤维10~30重量份数和相容剂1~7重量份数。然而该增强增韧阻燃聚烯烃树脂组合物仅仅采用溴锑系为阻燃剂,这类阻燃剂存在发烟量大、阻燃效果差且氧指数很难达到32以上,所制备的增强增韧阻燃聚烯烃树脂组合物存在烟雾密度高,不能达到难燃材料要求,一旦着火,使火场中人员存在逃生困难等问题。
发明内容
本发明针对专利文献CN200610144023.5中所使用的阻燃剂存在发烟量大、阻燃效果差且氧指数很难达到32以上的技术问题,目的在于提供一种阻燃聚烯烃树脂组合物。本发明的阻燃聚烯烃树脂组合物包括如下重量份的成分:
聚烯烃树脂100份、溴锑系复合阻燃剂30~85份优选35~75份、树脂改性剂2~20份优选5~15份、和加工助剂0.3~1.5份优选0.5~1.2份;其中,所述的溴锑系复合阻燃剂含有25~75份优选30~65份的基本阻燃剂与0.5~20份优选2~18份的阻燃协效剂;所述的基本阻燃剂是含有15~40份优选20~35份的十溴二苯乙烷、5~20份优选6~18份的三氧化二锑和0.5~15份优选2~12份的热塑性酚醛树脂的混合物,所述的阻燃协效剂选自下列组份中的至少2种复配而成:有机二茂铁、纳米蒙脱土、铝酸锌、锡酸锌、纳米水滑石和纳米氧化铜。
在本发明中,所有成分的份数均指重量份,所有成分均以聚烯烃树脂为100份为基础进行计算。
本发明的基本阻燃剂中所选用的热塑性酚醛树脂,具有较高的耐热性和成炭性,一方面解决了聚烯烃树脂的熔融滴落问题,另一方面增加了材料的耐热性,使传统PE-RT管材的维卡软化温度由124.5℃上升到140℃以上。与此同时,本发明使用的溴锑系复合阻燃剂集多种阻燃机理于一体,具有阻燃效果好、添加量少等优点。一方面可以增加PE-RT管材的阻燃性能,使氧指数达到32以上难燃材料要求;另一方面还可以降低材料的烟密度等级,达到安全环保标准要求。
所述的聚烯烃树脂为聚乙烯和/或聚丙烯,如冷热水用耐高温非交联聚乙烯(PE-RT)等。
所述的树脂改性剂选自下列物质组中的至少一种:马来酸酐接枝聚乙烯、马来酸酐接枝聚丙烯、乙烯醋酸乙烯酯共聚物(EVA)和马来酸酐接枝乙烯-辛烯共聚物。
所述的加工助剂选自下列物质组中的至少一种:聚乙烯蜡、聚丙烯蜡、N,N'-乙撑双硬脂酰胺(EBS)、硬脂酸钙、硬脂酸锌和硬脂酸镁。
本发明的阻燃聚烯烃树脂组合物还可以包括0.1~1.5份优选0.5~1.2份的抗氧剂和/或0.1~1.5份优选0.5~1.2份的抗静电剂。所述的抗氧剂选自下列物质组中的至少一种:四(β-(3,5-二叔丁基-4-羟基苯基)丙酸)季戊四醇酯(1010)、三(2.4-二叔丁基苯基)亚磷酸酯(168)和硫代二丙酸二月桂酯(DLTP);所述的抗静电剂选自下列物质组中的至少一种:脂肪酸环氧乙烷加成物、多元醇脂肪酸酯和羟乙基脂肪胺。
本发明的另一目的在于提供一种制备本发明的阻燃聚烯烃树脂组合物的方法。本发明的方法是,将聚烯烃树脂、溴锑系复合阻燃剂、树脂改性剂和加工助剂原料混匀,倒入挤塑机的料斗中,于挤塑机90~110r/min转速下,控制挤塑机的一区至九区的温度依次为:160±2℃、170±2℃、170±2℃、175±2℃、180±2℃、185±2℃、185±2℃、180±2℃和180±2℃,熔融挤出造粒,得到阻燃聚烯烃树脂组合物。
在制备本发明的阻燃聚烯烃树脂组合物的方法中,所述的原料还可以包括抗氧剂和/或抗静电剂。
本发明的又一目的在于提供一种阻燃管材,该阻燃管材由本发明的阻燃聚烯烃树脂组合物制得。具体地是,将阻燃聚烯烃树脂组合物置于成型机的料斗中,以孔网钢带为中间增强层,控制成型机的料筒Ⅰ区~Ⅶ区的温度:Ⅰ区为180±2℃、Ⅱ区为185±2℃、Ⅲ区为190±2℃、Ⅳ区为195±2℃、Ⅴ区为195±2℃、Ⅵ区为190±2℃和Ⅶ区为185±2℃,并控制模头温度为183±2℃,挤出成型管材;然后将成型管材以1.5~2.5m/min优选2m/min的速率牵引于30~40℃优选35±2℃的冷却槽中,冷却定型得到阻燃管材。本发明的阻燃管材由于在成型过程中采用孔网钢带为增强层,具有较好的抗静液压和防破裂爆管性能。将本发明制备的阻燃PE-RT管材在试验温度95℃,静液压力3.6MPa,165小时静液压试验后,管材无破裂、无渗漏现象,满足CJ/T175-2002《冷热水用耐热聚乙烯(PE-RT)管道系统》标准性能指标要求。
本发明的阻燃管材的外部还可以包覆一层保温材料,如玻璃棉、岩棉和/或橡塑保温板保温材料等,一方面防止了管道材料在高低温环境下的老化,另一方面降低管道散热,达到节约能源并同时还增加管道的防火安全性能。
本发明的阻燃聚烯烃树脂组合物制备的管材具有较高的耐热性(材料的维卡软化温度可达到140℃以上)、较高的阻燃性能(氧指数大于32以上)、较低的烟密度(SDR小于75),且具有较好的耐热水性能,耐低温性能和长期静液压性能,寿命长、不结垢、可热熔连接因外力损坏后的管材等优点,可广泛用于中央空调管道系统、工业给水排水管道等制品。还可广泛用于人员密集公共场所诸如地铁中央空调管道系统等领域。
具体实施方式
实施例1
阻燃聚烯烃树脂组合物的原料
90份高密度聚乙烯(PE-RT)、10份聚丙烯、30份溴锑系复合阻燃剂、2份EVA树脂改性剂、0.3份EBS加工助剂、0.1份1010抗氧剂和0.1份多元醇脂肪酸酯抗静电剂。
其中,溴锑系复合阻燃剂是:
基本阻燃剂(十溴二苯乙烷:三氧化二锑:酚醛树脂=15份:5份:5份)25份阻燃抑烟剂(铝酸锌1份、有机二茂铁1份、纳米蒙脱土3份)5份
称取上述原料后,于混合机中混合15min。然后,倒入双螺杆挤塑机中,控制挤塑机的螺杆转速为100r/min,并控制挤塑机上一区至九区的温度分别为160℃、170℃、170℃、175℃、180℃、185℃、185℃、180℃和180℃,熔融挤出造粒,得到阻燃聚烯烃树脂组合物。
将所制的阻燃聚烯烃树脂组合物倒入单螺杆塑料管材挤出成型机的料斗中,以孔网钢带为中间增强层,控制成型机的料筒温度,分别为Ⅰ区180℃、Ⅱ区185℃、Ⅲ区190℃、Ⅳ区195℃、Ⅴ区195℃、Ⅵ区190℃和Ⅶ区185℃,模头温度为183℃,挤出成型管材。然后将成型管材以2m/min速率牵引于35℃的冷却槽中,冷却定型并切割得到孔网钢带增强阻燃管材。在孔网钢带增强阻燃管材外包覆一层玻璃棉,并做好防水防潮处理,得到本发明的孔网钢带增强保温阻燃管材。
经测试,本发明的阻燃PE-RT管材的氧指数为32.0,垂直燃烧V0级,烟密度等级为55,维卡软化温度142℃。然后将制备的阻燃PE-RT管材在试验温度95℃,静液压力3.6MPa,165小时静液压试验后,管材无破裂、无渗漏现象,满足CJ/T175-2002《冷热水用耐热聚乙烯(PE-RT)管道系统》标准性能指标要求。
实施例2
阻燃聚烯烃树脂组合物原料
100份冷热水用耐高温非交联聚乙烯(PE-RT)、56份溴锑系复合阻燃剂、10份马来酸酐接枝聚乙烯树脂改性剂、1.0份PE蜡加工助剂、0.5份168抗氧剂和0.5份羟乙基脂肪胺抗静电剂。
其中,溴锑系复合阻燃剂是:
基本阻燃剂(十溴二苯乙烷:三氧化二锑:酚醛树脂=30份:10份:15份)55份阻燃协效剂(铝酸锌0.2份、锡酸锌0.3份、纳米蒙脱土0.5份)1份
称取上述原料后,于混合机中混合15min。然后倒入双螺杆挤塑机中,控制挤塑机的螺杆转速为90r/min,并控制挤塑机上一区至九区的温度分别为162℃、172℃、172℃、177℃、182℃、187℃、187℃、182℃和182℃,熔融挤出造粒,得到阻燃聚烯烃树脂组合物。
将所制的阻燃聚烯烃树脂组合物倒入单螺杆塑料管材挤出成型机的料斗中,以孔网钢带为中间增强层,控制成型机的料筒温度,分别为Ⅰ区182℃、Ⅱ区187℃、Ⅲ区192℃、Ⅳ区197℃、Ⅴ区197℃、Ⅵ区192℃和Ⅶ区187℃,模头温度为185℃,挤出成型管材。然后将成型管材以2m/min速率牵引于37℃的冷却槽中,冷却定型并切割得到孔网钢带增强阻燃管材。在孔网钢带增强阻燃管材外包覆一层岩棉,并做好防水防潮处理,得到本发明的孔网钢带增强保温阻燃管材。
经测试,本发明的阻燃PE-RT管材的氧指数为33.0,垂直燃烧V0级,烟密度等级为70,维卡软化温度148℃。将制备的阻燃PE-RT管材在试验温度95℃,静液压力3.6MPa,165小时静液压试验后,管材无破裂、无渗漏现象,满足CJ/T175-2002《冷热水用耐热聚乙烯(PE-RT)管道系统》标准性能指标要求。
实施例3
本发明阻燃聚烯烃树脂组合物原料
80份冷热水用耐高温非交联聚乙烯(PE-RT)、20份聚丙烯、85份溴锑系复合阻燃剂、20份马来酸酐接枝聚丙烯树脂改性剂、1.5份(聚丙烯蜡1.0份、硬脂酸镁0.5份)加工助剂、1.5份DLTP抗氧剂和1.5份环氧乙烷加成物抗静电剂。
其中,溴锑系复合阻燃剂是:
基本阻燃剂(十溴二苯乙烷:三氧化二锑:酚醛树脂=40份:10份:15份)65份阻燃协效剂(有机二茂铁5份、纳米水滑石4份、纳米氧化铜6份、铝酸锌5份)20份
称取上述原料后,于混合机中混合15min。然后,倒入双螺杆挤塑机中,控制挤塑机的螺杆转速为100r/min,并控制挤塑机上一区至九区的温度分别为158℃、168℃、168℃、174℃、178℃、183℃、183℃、178℃和178℃,熔融挤出造粒,得到阻燃聚烯烃树脂组合物。
将所制备的阻燃聚烯烃树脂组合物倒入单螺杆塑料管材挤出成型机的料斗中,以孔网钢带为中间增强层,控制成型机的料筒温度,分别为Ⅰ区178℃、Ⅱ区184℃、Ⅲ区188℃、Ⅳ区193℃、Ⅴ区193℃、Ⅵ区188℃和Ⅶ区183℃,模头温度为181℃,挤出成型管材。然后将成型管材以2m/min速率牵引于33℃的冷却槽中,冷却定型并切割得到孔网钢带增强阻燃管材。在孔网钢带增强阻燃管材外包覆一层橡塑保温板,并做好防水防潮处理,得到本发明的孔网钢带增强保温阻燃管材。
经测试,本发明的阻燃PE-RT管材的氧指数为34.5,垂直燃烧V0级,烟密度等级为55,维卡软化温度150℃。将制备的阻燃PE-RT管材在试验温度95℃,静液压力3.6MPa,165小时静液压试验后,管材无破裂、无渗漏现象,满足CJ/T175-2002《冷热水用耐热聚乙烯(PE-RT)管道系统》标准性能指标要求。
实施例4
本发明阻燃聚烯烃树脂组合物原料
100份冷热水用耐高温非交联聚乙烯(PE-RT)、75份溴锑系复合阻燃剂、12份马来酸酐接枝聚丙烯树脂改性剂、1.0份(硬脂酸锌0.5份、硬脂酸钙0.5份)加工助剂、1.0份(0.5份DLTP、0.5份1010)抗氧剂和1.0份抗静电剂(环氧乙烷加成物0.5份、多元醇脂肪酸酯0.5份)。
其中,溴锑系复合阻燃剂是:
基本阻燃剂(十溴二苯乙烷:三氧化二锑:酚醛树脂=40份:20份:5份)65份阻燃协效剂(有机二茂铁2份、纳米氧化铜2份、纳米蒙脱土2份、纳米水滑石2份、锡酸锌2份)10份
称取上述原料后,于混合机中混合15min。然后,倒入双螺杆挤塑机中,控制挤塑机的螺杆转速为110r/min,并控制挤塑机上一区至九区的温度分别为158℃、168℃、168℃、174℃、178℃、183℃、183℃、178℃和178℃,熔融挤出造粒,得到阻燃聚烯烃树脂组合物。
将所制备的阻燃聚烯烃树脂组合物倒入单螺杆塑料管材挤出成型机的料斗中,以孔网钢带为中间增强层,控制成型机的料筒温度,分别为Ⅰ区178℃、Ⅱ区184℃、Ⅲ区188℃、Ⅳ区193℃、Ⅴ区193℃、Ⅵ区188℃和Ⅶ区183℃,模头温度为181℃,挤出成型管材。然后将成型管材以2m/min速率牵引于33℃的冷却槽中,冷却定型并切割得到孔网钢带增强阻燃管材。在孔网钢带增强阻燃管材外包覆一层橡塑保温板,并做好防水防潮处理,得到本发明的孔网钢带增强保温阻燃管材。
经测试,本发明的阻燃PE-RT管材的氧指数为32.5,垂直燃烧V0级,烟密度等级为55,维卡软化温度145℃。将制备的阻燃PE-RT管材在试验温度95℃,静液压力3.6MPa,165小时静液压试验后,管材无破裂、无渗漏现象,满足CJ/T175-2002《冷热水用耐热聚乙烯(PE-RT)管道系统》标准性能指标要求。
实施例5
阻燃聚烯烃树脂组合物原料
100份冷热水用耐高温非交联聚乙烯(PE-RT)、60份溴锑系复合阻燃剂、12份马来酸酐接枝聚乙烯树脂改性剂、1.0份(硬脂酸锌0.5份、硬脂酸钙0.5份)加工助剂、1.0份(0.5份168、0.5份1010)抗氧剂和1.0份环氧乙烷加成物抗静电剂。
其中,溴锑系复合阻燃剂是:
基本阻燃剂(十溴二苯乙烷:三氧化二锑:酚醛树脂=35份:15份:5份)55份阻燃协效剂(有机二茂铁1份、纳米氧化铜1份、纳米蒙脱土3份)5份
称取上述原料后,于混合机中混合15min。然后,倒入双螺杆挤塑剂中,控制挤塑机的螺杆转速为100r/min,并控制挤塑机上一区至九区的温度分别为158℃、168℃、168℃、174℃、178℃、183℃、183℃、178℃和178℃,熔融挤出造粒,得到阻燃聚烯烃树脂组合物。
将所制的阻燃聚烯烃树脂组合物倒入单螺杆塑料管材挤出成型机的料斗中,控制成型机的料筒温度,分别为Ⅰ区178℃、Ⅱ区184℃、Ⅲ区188℃、Ⅳ区193℃、Ⅴ区193℃、Ⅵ区188℃和Ⅶ区183℃,模头温度为181℃,挤出成型管材。然后将成型管材以2m/min速率牵引于33℃的冷却槽中,冷却定型并切割得到阻燃管材。
经测试,阻燃管材的氧指数为32.5,垂直燃烧V0级,无熔融滴落,烟密度等级为65,维卡软化温度140℃。
对比例1
阻燃聚烯烃树脂组合物原料
100份冷热水用耐高温非交联聚乙烯(PE-RT)、60份溴锑系复合阻燃剂、12份马来酸酐接枝聚乙烯树脂改性剂、1.5份(硬脂酸锌1.0份、硬脂酸钙0.5份)加工助剂、1.5份(0.5份DLTP、1.0份1010)抗氧剂和1.5份抗静电剂(环氧乙烷加成物0.5份、多元醇脂肪酸酯1.0份)。
其中,溴锑系复合阻燃剂是:
基本阻燃剂(十溴二苯乙烷:三氧化二锑=45份:15份)60份
称取上述原料后,于混合机中混合15min。然后,倒入双螺杆挤塑机中,控制挤塑机的螺杆转速为110r/min,并控制挤塑机上一区至九区的温度分别为158℃、168℃、168℃、174℃、178℃、183℃、183℃、178℃和178℃,熔融挤出造粒,得到阻燃聚烯烃树脂组合物。
将所制备的阻燃聚烯烃树脂组合物倒入单螺杆塑料管材挤出成型机的料斗中,控制成型机的料筒温度为Ⅰ区178℃、Ⅱ区184℃、Ⅲ区188℃、Ⅳ区193℃、Ⅴ区193℃、Ⅵ区188℃和Ⅶ区183℃,模头温度为181℃,挤出成型管材。然后将成型管材以2m/min速率牵引于33℃的冷却槽中,冷却定型并切割得到阻燃管材。
经测试,管材的氧指数为29.5,熔融滴落,烟密度等级大于75,维卡软化温度121℃。将制备的管材在试验温度95℃,静液压力3.6MPa,165小时静液压试验后,管材有破裂、渗漏现象,不满足CJ/T175-2002《冷热水用耐热聚乙烯(PE-RT)管道系统》标准性能指标要求。
对比例2
阻燃聚烯烃树脂组合物原料
80份冷热水用耐高温非交联聚乙烯(PE-RT)、20份聚丙烯、60份溴锑系复合阻燃剂、12份马来酸酐接枝聚乙烯树脂改性剂、1.0份(硬脂酸锌0.5份、硬脂酸钙0.5份)加工助剂、1.0份(0.5份168、0.5份1010)抗氧剂和1.0份环氧乙烷加成物抗静电剂。
其中,溴锑系复合阻燃剂是:
基本阻燃剂(十溴二苯乙烷:三氧化二锑=40份:15份)55份阻燃协效剂(有机二茂铁1份、纳米氧化铜1份、纳米蒙脱土3份)5份
称取上述原料后,于混合机中混合15min。然后,倒入双螺杆挤塑机中,控制挤塑机的螺杆转速为100r/min,并控制挤塑机上一区至九区的温度分别为158℃、168℃、168℃、174℃、178℃、183℃、183℃、178℃和178℃,熔融挤出造粒,得到阻燃聚烯烃树脂组合物。
将所制备的阻燃聚烯烃树脂组合物倒入单螺杆塑料管材挤出成型机的料斗中,控制成型机的料筒温度,分别为Ⅰ区178℃、Ⅱ区184℃、Ⅲ区188℃、Ⅳ区193℃、Ⅴ区193℃、Ⅵ区188℃和Ⅶ区183℃,模头温度为181℃,挤出成型管材。然后将成型管材以2m/min速率牵引于33℃的冷却槽中,冷却定型并切割得到阻燃管材。
经测试,管材的氧指数为31.5,垂直燃烧V0级,无熔融滴落,烟密度等级为65,维卡软化温度121℃。将管材在试验温度95℃,静液压力3.6MPa,165小时静液压试验后,管材有破裂、渗漏现象,不满足CJ/T175-2002《冷热水用耐热聚乙烯(PE-RT)管道系统》标准性能指标要求。
实施例及对比例中所用原料均为市售,酚醛树脂均为热塑性酚醛树脂。

Claims (10)

1.一种阻燃聚烯烃树脂组合物,其特征在于包括如下重量份的成分:
聚烯烃树脂100份、溴锑系复合阻燃剂30~85份优选35~75份、树脂改性剂2~20份优选5~15份、和加工助剂0.3~1.5份优选0.5~1.2份;其中,所述的溴锑系复合阻燃剂含有25~75份优选30~65份的基本阻燃剂与0.5~20份优选2~18份的阻燃协效剂;所述的基本阻燃剂是含有15~40份优选20~35份的十溴二苯乙烷、5~20份优选6~18份的三氧化二锑和0.5~15份优选2~12份的热塑性酚醛树脂的混合物,所述的阻燃协效剂选自下列组份中的至少2种复配而成:有机二茂铁、纳米蒙脱土、铝酸锌、锡酸锌、纳米水滑石和纳米氧化铜。
2.如权利要求1所述的组合物,其特征在于:
所述的聚烯烃树脂为聚乙烯和/或聚丙烯中的至少一种;
所述的树脂改性剂选自下列物质组中的至少一种:马来酸酐接枝聚乙烯、马来酸酐接枝聚丙烯、乙烯醋酸乙烯酯共聚物和马来酸酐接枝乙烯-辛烯共聚物;
所述的加工助剂选自下列物质组中的至少一种:聚乙烯蜡、聚丙烯蜡、N,N'-乙撑双硬脂酰胺、硬脂酸钙、硬脂酸锌和硬脂酸镁。
3.如权利要求1所述的组合物,其特征在于:该阻燃聚烯烃树脂组合物还包括0.1~1.5份优选0.5~1.2份的抗氧剂和/或0.1~1.5份优选0.5~1.2份的抗静电剂。
4.如权利要求3所述的组合物,其特征在于:所述的抗氧剂选自下列物质组中的至少一种:四(β-(3,5-二叔丁基-4-羟基苯基)丙酸)季戊四醇酯、三(2.4-二叔丁基苯基)亚磷酸酯和硫代二丙酸二月桂酯;所述的抗静电剂选自下列物质组中的至少一种:脂肪酸环氧乙烷加成物、多元醇脂肪酸酯和羟乙基脂肪胺。
5.一种制备权利要求1所述阻燃聚烯烃树脂组合物的方法,其特征在于:将聚烯烃树脂、溴锑系复合阻燃剂、树脂改性剂和加工助剂原料混匀,倒入挤塑机中,于90~110r/min转速下,控制挤塑机的一区至九区的温度依次为:160±2℃、170±2℃、170±2℃、175±2℃、180±2℃、185±2℃、185±2℃、180±2℃和180±2℃,熔融挤出造粒,得到阻燃聚烯烃树脂组合物。
6.如权利要求5所述的方法,其特征在于:所述的原料还包括抗氧剂和/或抗静电剂。
7.一种阻燃管材,其特征在于:该阻燃管材由权利要求1~4任一项所述的阻燃聚烯烃树脂组合物制得。
8.如权利要求7所述的阻燃管材,其特征在于:具体地是,将阻燃聚烯烃树脂组合物置于成型机的料斗中,以孔网钢带为中间增强层,控制成型机的料筒Ⅰ区~Ⅶ区的温度:Ⅰ区为180±2℃、Ⅱ区为185±2℃、Ⅲ区为190±2℃、Ⅳ区为195±2℃、Ⅴ区为195±2℃、Ⅵ区为190±2℃和Ⅶ区为185±2℃,并控制模头温度为183±2℃,挤出成型管材;然后将成型管材以1.5~2.5m/min优选2m/min的速率牵引于30~40℃优选35±2℃的冷却槽中,冷却定型得到阻燃管材。
9.如权利要求8所述的阻燃管材,其特征在于:该阻燃管材外部包覆有一层保温材料。
10.如权利要求9所述的阻燃管材,其特征在于:该保温材料为玻璃棉、岩棉和橡塑保温板中的一种。
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