CN106188807B - 一种抗静电阻燃eva/pvc复合发泡材料及其制备方法 - Google Patents
一种抗静电阻燃eva/pvc复合发泡材料及其制备方法 Download PDFInfo
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Abstract
本发明公开一种抗静电阻燃EVA/PVC复合发泡材料,由如下重量份的原料制成:EVA100份、PVC50‑100份、相容剂10‑30份、增韧剂10‑30份、阻燃剂20‑30份,增塑剂30‑50份、发泡剂6‑10份、交联剂0.5‑2份、表面处理剂0‑2.5份、抗静电剂10‑40份、其他助剂为1‑10份。所得EVA/PVC复合发泡材料具有回弹性好、拉伸强度高、撕裂强度高、断裂伸长率大、耐挠曲、密度低、压缩变形量小等特点;并且具有阻燃性和抗静电性,能满足电子包装、防火领域的应用需求。
Description
技术领域
本发明属于高分子材料领域,具体涉及一种抗静电阻燃EVA/PVC复合发泡材料及其制备方法。
背景技术
EVA是乙烯-乙酸乙烯共聚物,它是由乙烯和乙酸乙烯共聚而制得,EVA由于在分子链中引入了醋酸乙烯单体,近年来发展十分迅速,广泛用于运动器材、床垫、儿童地板、救生制品、高档运动鞋等的制造。目前在电子包装市场上常见的EVA发泡材料都存在易燃性,抗静电性能差等缺陷。
PVC,由氯乙烯在引发剂作用下聚合而成的热塑性树脂。聚氯乙烯具有阻燃(阻燃值为40以上)、耐化学药品性高、机械强度及电绝缘性良好的优点。PVC是世界上产量最大的通用塑料,应用非常广泛。在建筑材料、工业制品、日用品、地板革、地板砖、人造革、管材、电线电缆、包装膜、瓶、发泡材料、密封材料、纤维等方面均有广泛应用。
发明内容
本发明的目的在于提供一种抗静电阻燃EVA/PVC复合发泡材,综合EVA和PVC树脂的优缺点,所得复合材料具有回弹性好、拉伸强度高、撕裂强度高、断裂伸长率大、耐挠曲、密度低、压缩变形量小等特点;并且具有阻燃性和抗静电性,能满足电子包装、防火领域的应用需求。
为实现上述目的,本发明采用如下技术方案:
一种抗静电阻燃EVA/PVC复合发泡材料,按重量份计,由以下原料制成:EVA100份、PVC50-100份、相容剂10-30份、增韧剂10-30份、阻燃剂20-30份,增塑剂30-50份、发泡剂6-10份、交联剂0.5-2份、表面处理剂0-2.5份、抗静电剂10-40份、其他助剂为1-10份;所述的其他助剂为硬脂酸、硬脂酸锌、氧化锌和快熟剂TAIC,其质量比为0.4~1:0.6~1:1.5~3:0.5~1.5,优选为硬脂酸、硬脂酸锌、氧化锌和快熟剂TAIC的质量比为0.5:1:1.5:1。
所述的相容剂为乙烯-丙烯酸共聚物、马来酸酐接枝丙烯腈-丁二烯-苯乙烯三元共聚物、马来酸酐接枝聚丙烯中的一种或多种的混合物;优选为乙烯-丙烯酸共聚物和马来酸酐接枝聚丙烯的混合物,其质量比为4:1;
所述的增韧剂为乙烯-辛烯共聚物、丁腈橡胶、三元乙丙胶的一种或两种的混合物;优选为丁腈橡胶和三元乙丙胶的混合物,其质量比为1:1;
所述的增塑剂为甘油、环氧大豆油、对苯二甲酸二辛酯中的一种或两种的混合物;优选为环氧大豆油和对苯二甲酸二辛酯的混合物,其质量比为1:1
所述的发泡剂为偶氮二甲酰胺;所述的交联剂为过氧化二苯甲酰;
所述的表面处理剂为硅烷偶联剂、铝酸酯偶联剂、钛酸酯偶联剂中的一种或两种的混合物;优选为铝酸酯偶联剂和钛酸酯偶联剂的混合物,其质量比为1:1
所述的阻燃剂为三氧化二锑、氢氧化铝、氢氧化镁中的一种或两种;优选为三氧化二锑和氢氧化铝的混合物,其质量比为2:1;
所述的抗静电剂为炭黑、碳纤维中的一种或两种,优选为炭黑和碳纤维的质量比为10:1。
该抗静电阻燃EVA/PVC复合发泡材料的制备方法包括以下步骤:
(1)在常温下,将PVC与增塑剂高速搅拌后,并密封状态下常温放置24h;得到增塑的PVC;
(2)将表面处理剂用丙酮或乙醇溶解后,与阻燃剂在60-80℃下高速搅拌,在常温下密封放置24h,得到混合物;
(3)将抗静电剂加入到质量分数为30-70%的硝酸中,在40-100℃下反应6-24h,得到处理后的抗静电剂;
(4)将步骤(1)增塑的PVC树脂与EVA树脂、相容剂、增韧剂、步骤(2)处理后的阻燃剂和步骤(3)处理后的抗静电剂及其他助剂加入到密炼机中在90-130℃下密炼5-15min,物料混合均匀后再加入发泡剂和交联剂密炼3-5min后倒料,用开炼机在60-90℃开炼混合出片,最后用平板硫化机在160-190℃下发泡15-30min,制得所述的抗静电阻燃EVA/PVC复合发泡材料。
本发明的显著优点:本发明配方科学合理,工艺流程简单实用,生产出的材料具有回弹性好、拉伸强度高、撕裂强度高、断裂伸长率大、耐挠曲、密度低、压缩变形量小等特点,并且产品具有阻燃性和抗静电性,能满足生活和某些特殊环境下的使用,主要在电子包装、防火领域具有广阔的应用前景。
具体实施方式
实施例1
一种抗静电阻燃EVA/PVC复合发泡材料,按重量份计,由EVA100份、PVC50份、相容剂10份、增韧剂10份、阻燃剂20份,增塑剂30份、偶氮二甲酰胺6份、过氧化二苯甲酰0.5份、抗静电剂10份、其他助剂为1份制得;其中其他助剂为硬脂酸、硬脂酸锌、氧化锌和快熟剂TAIC,其质量比为0.4:0.6:2:0.5;
相容剂为马来酸酐接枝丙烯腈-丁二烯-苯乙烯三元共聚物和马来酸酐接枝聚丙烯的混合物,其质量比为3:2;
增韧剂为乙烯-辛烯共聚物和三元乙丙胶的混合物,其质量比为1:1;
增塑剂为环氧大豆油和甘油的混合物,其质量比为1:1;
表面处理剂为铝酸酯偶联剂和硅烷偶联剂的混合物,其质量比为1:1;
阻燃剂为三氧化二锑和氢氧化镁的混合物,其质量比为2:1;
抗静电剂为处理后的炭黑和碳纤维,其质量比为10:1。
其制备过程具体如下:
(1)在常温下,将PVC与增塑剂高速搅拌后,并密封状态下常温放置24h;得到增塑的PVC;
(2)将表面处理剂用丙酮或乙醇溶解后,与阻燃剂在60℃下高速搅拌,在常温下密封放置24h,得到混合物;
(3)将抗静电剂加入到质量分数为30%的硝酸中,在40℃下反应6h,得到处理后的抗静电剂;
(4)将步骤(1)增塑的PVC树脂与EVA树脂、相容剂、增韧剂、步骤(2)处理后的阻燃剂和步骤(3)处理后的抗静电剂及其他助剂加入到密炼机中在90℃下密炼5min,物料混合均匀后再加入发泡剂和交联剂密炼3min后倒料,用开炼机在60℃开炼混合出片,最后用平板硫化机在160℃下发泡15min,制得所述的抗静电阻燃EVA/PVC复合发泡材料。
实施例2
一种抗静电阻燃EVA/PVC复合发泡材料,按重量份计,由EVA100份、PVC75份、相容剂20份、增韧剂20份、阻燃剂25份,增塑剂40份、偶氮二甲酰胺8份、过氧化二苯甲酰1.5份、表面处理剂1.0份、抗静电剂25份、其他助剂为6份制得:其中其他助剂为硬脂酸、硬脂酸锌、氧化锌和快熟剂TAIC,其质量比为0.5:1:1.5:1;
相容剂为乙烯-丙烯酸共聚物和马来酸酐接枝聚丙烯的混合物,其质量比为4:1;
增韧剂为丁腈橡胶和乙烯-辛烯共聚物的混合物,其质量比为1:1;
增塑剂为甘油和对苯二甲酸二辛酯的混合物,其质量比为1:1;
表面处理剂为硅烷偶联剂和钛酸酯偶联剂,其质量比为1:1;
阻燃剂为氢氧化镁和氢氧化铝,其质量比为2:1;
抗静电剂为处理后的炭黑和碳纤维,其质量比10:1。
其制备过程具体如下:
(1)在常温下,将PVC与增塑剂高速搅拌后,并密封状态下常温放置24h;得到增塑的PVC;
(2)将表面处理剂用丙酮或乙醇溶解后,与阻燃剂在70℃下高速搅拌,在常温下密封放置24h,得到混合物;
(3)将抗静电剂加入到质量分数为50%的硝酸中,在70℃下反应12h,得到处理后的抗静电剂;
(4)将步骤(1)增塑的PVC树脂与EVA树脂、相容剂、增韧剂、步骤(2)处理后的阻燃剂和步骤(3)处理后的抗静电剂及其他助剂加入到密炼机中在110℃下密炼10min,物料混合均匀后再加入发泡剂和交联剂密炼4min后倒料,用开炼机在70℃开炼混合出片,最后用平板硫化机在170℃下发泡20min,制得所述的抗静电阻燃EVA/PVC复合发泡材料。
实施例3
一种抗静电阻燃EVA/PVC复合发泡材料,按重量份计,由EVA100份、PVC100份、相容剂30份、增韧剂30份、阻燃剂30份,增塑剂50份、偶氮二甲酰胺10份、过氧化二苯甲酰2份、表面处理剂2.5份、抗静电剂40份、其他助剂为10份;其中其他助剂为硬脂酸、硬脂酸锌、氧化锌和快熟剂TAIC,其质量比为1:0.8:1.6:1.5;
相容剂为乙烯-丙烯酸共聚物和马来酸酐接枝丙烯腈-丁二烯-苯乙烯三元共聚物的混合物,其质量比为4:1;
增韧剂为丁腈橡胶和三元乙丙胶的混合物,其质量比为1:1;
增塑剂为环氧大豆油和对苯二甲酸二辛酯的混合物,其质量比为1:1;
表面处理剂为铝酸酯偶联剂和钛酸酯偶联剂,其质量比为1:1;
阻燃剂为三氧化二锑和氢氧化铝,其质量比为2:1;
抗静电剂为处理后的炭黑和碳纤维,其质量比10:1。
其制备过程具体如下:
(1)在常温下,将PVC与增塑剂高速搅拌后,并密封状态下常温放置24h;得到增塑的PVC;
(2)将表面处理剂用丙酮或乙醇溶解后,与阻燃剂在80℃下高速搅拌,在常温下密封放置24h,得到混合物;
(3)将抗静电剂加入到质量分数为70%的硝酸中,在100℃下反应24h,得到处理后的抗静电剂;
(4)将步骤(1)增塑的PVC树脂与EVA树脂、相容剂、增韧剂、步骤(2)处理后的阻燃剂和步骤(3)处理后的抗静电剂及其他助剂加入到密炼机中在130℃下密炼15min,物料混合均匀后再加入发泡剂和交联剂密炼5min后倒料,用开炼机在90℃开炼混合出片,最后用平板硫化机在190℃下发泡30min,制得所述的抗静电阻燃EVA/PVC复合发泡材料。
对上述实施例所得复合材料进行表面电阻率和氧指数测定,测量方法如下:
1、表面电阻率 :先确认抗静电发泡材料的100V的DC电压,再测量电流后换算为电阻率 (ASTM D257) 。
2、氧指数测定 :参照标准 GB8332-1987 泡沫塑料燃烧性能试验方法水平燃烧法。所得结果列于表1。
表1.上述实施例所得复合复合材料的机械性能、表面电阻率及氧指数。
由表1的结果可知,上述实施例所得的复合材料具有回弹性好、拉伸强度高、撕裂强度高、断裂伸长率大、耐挠曲、密度低、压缩变形量小等特点,并且具有优异的阻燃性和抗静电性。
以上所述仅为本发明的较佳实施例,凡依本发明申请专利范围所做的均等变化与修饰,皆应属本发明的涵盖范围。
Claims (1)
1.一种抗静电阻燃EVA/PVC复合发泡材料,其特征在于:按重量份计,由EVA100份、PVC75份、相容剂20份、增韧剂20份、阻燃剂25份,增塑剂40份、偶氮二甲酰胺8份、过氧化二苯甲酰1.5份、表面处理剂1.0份、抗静电剂25份、其他助剂为6份制得:其中其他助剂为硬脂酸、硬脂酸锌、氧化锌和快熟剂TAIC,其质量比为0.5:1:1.5:1;
相容剂为乙烯-丙烯酸共聚物和马来酸酐接枝聚丙烯的混合物,其质量比为4:1;
增韧剂为丁腈橡胶和乙烯-辛烯共聚物的混合物,其质量比为1:1;
增塑剂为甘油和对苯二甲酸二辛酯的混合物,其质量比为1:1;
表面处理剂为硅烷偶联剂和钛酸酯偶联剂,其质量比为1:1;
阻燃剂为氢氧化镁和氢氧化铝,其质量比为2:1;
抗静电剂为处理后的炭黑和碳纤维,其质量比10:1;
其制备过程具体如下:
(1)在常温下,将PVC与增塑剂高速搅拌后,并密封状态下常温放置24h;得到增塑的PVC;
(2)将表面处理剂用丙酮或乙醇溶解后,与阻燃剂在70℃下高速搅拌,在常温下密封放置24h,得到混合物;
(3)将抗静电剂加入到质量分数为50%的硝酸中,在70℃下反应12h,得到处理后的抗静电剂;
(4)将步骤(1)增塑的PVC树脂与EVA树脂、相容剂、增韧剂、步骤(2)处理后的阻燃剂和步骤(3)处理后的抗静电剂及其他助剂加入到密炼机中在110℃下密炼10min,物料混合均匀后再加入发泡剂和交联剂密炼4min后倒料,用开炼机在70℃开炼混合出片,最后用平板硫化机在170℃下发泡20min,制得所述的抗静电阻燃EVA/PVC复合发泡材料。
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