CN106751165A - 一种钛硅介孔分子筛改性的耐热老化的pvc‑nbr复合发泡板及其制备方法 - Google Patents
一种钛硅介孔分子筛改性的耐热老化的pvc‑nbr复合发泡板及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种钛硅介孔分子筛改性的耐热老化的PVC‑NBR复合发泡板及其制备方法,该复合发泡板以PVC与NBR、聚氨酯弹性体共混作为树脂发泡基料,同时加入了表面改性后的钛硅介孔分子筛微粉作为改性补强填料,再结合硼砂、8‑羟基喹啉等原料,最终制得了具有高耐热、高强度、高发泡均匀度、高抗老化复合发泡板,极大地改善了传统PVC/NBR共混发泡料的使用性能,其应用范围进一步拓宽。
Description
技术领域
本发明涉及PVC发泡板技术领域,尤其涉及一种钛硅介孔分子筛改性的耐热老化的PVC-NBR复合发泡板及其制备方法。
背景技术
PVC发泡板具有防水、阻燃、耐酸碱、防蛀、质轻、保温、隔音、减震等特性,是木材、铝材、复合板材的理想替代品,广泛的应用于客车、火车车厢顶棚、箱体芯层、内部装潢用板、建筑物外墙板、内装饰用板、办公室、住宅、公共场所建筑物隔间,商用装饰架、无尘室用板、吊顶板等方面。
尽管PVC发泡板具有如此广泛的应用空间,然而其实际市场占有率却偏低,尤其在家装材料方面,主要的制约因素是产品良莠不齐,产品在强度、刚性、热稳定性等方面不尽如人意,使用时存在安全隐患,为了提高PVC板材的综合性能,使用高分子材料和无机填料共混改性是最常用的方法。《阻燃型NBR/PVC发泡材料的研究》一文将NBR与PVC共混发泡,获得了力学性能较为优良的产品,但是其耐热性差,需添加阻燃剂达到阻燃效果,但是对材料的力学性能影响较大,使用受到限制。
发明内容
本发明目的就是为了弥补已有技术的缺陷,提供一种钛硅介孔分子筛改性的耐热老化的PVC-NBR复合发泡板及其制备方法。
本发明是通过以下技术方案实现的:
一种钛硅介孔分子筛改性的耐热老化的PVC-NBR复合发泡板,该复合发泡板由以下重量份的原料制得:PVC 40-50、NBR 25-30、聚氨酯弹性体12-15、钛硅介孔分子筛微粉5-6、8-羟基喹啉0.4-0.5、AC发泡剂2-5、硼酸三乙酯1-2、光稳定剂0.5-1、大豆油3-5、硼砂0.2-0.5、促进剂TMTD 0.4-0.5、云母粉2-3、硬脂酸0.5-1、硫化剂PDM 1-1.5、钙锌稳定剂4-5、硅烷偶联剂kh560 0.5-1、环氧脂肪酸甲酯5-8、甲基丙烯酸锌2-4。
所述的一种钛硅介孔分子筛改性的耐热老化的PVC-NBR复合发泡板的制备方法包括以下步骤:
(1)先将硅烷偶联剂kh560与钛硅介孔分子筛微粉混合研磨分散30-40min,得改性钛硅介孔分子筛微粉备用;
(2)先将NBR投入160℃密炼机中密炼15-20min,随后依次加入PVC、聚氨酯弹性体、硼砂、大豆油、8-羟基喹啉、改性钛硅介孔分子筛微粉、环氧脂肪酸甲酯、光稳定剂、钙锌稳定剂、甲基丙烯酸锌,继续密炼30-40min后得复合基料,基料自然冷却至室温备用;
(3)将步骤(2)制备的基料与其它剩余成分投入炼胶机中,在50℃条件下混炼10-15min后薄通三次后出料;
(4)将步骤(3)所得片材在模具中,在160-163℃、10-12MPa条件下热压发泡14-16min,随后卸压冷却,即得所述复合发泡板。
本发明以PVC与NBR、聚氨酯弹性体共混作为树脂发泡基料,同时加入了表面改性后的钛硅介孔分子筛微粉作为改性补强填料,再结合硼砂、8-羟基喹啉等原料,最终制得了具有高耐热、高强度、高发泡均匀度、高抗老化复合发泡板,极大地改善了传统PVC/NBR共混发泡料的使用性能,其应用范围进一步拓宽。
具体实施方式
一种钛硅介孔分子筛改性的耐热老化的PVC-NBR复合发泡板,该复合发泡板由以下重量份的原料制得:PVC 40、NBR 25、聚氨酯弹性体12、钛硅介孔分子筛微粉5、8羟基喹啉0.4、AC发泡剂2、硼酸三乙酯1、光稳定剂0.5、大豆油3、硼砂0.2、促进剂TMTD 0.4、云母粉2、硬脂酸0.5、硫化剂PDM 1、钙锌稳定剂4、硅烷偶联剂kh560 0.5、环氧脂肪酸甲酯5、甲基丙烯酸锌2。
该实施例复合发泡板的制备方法包括以下步骤:
(1)先将硅烷偶联剂kh560与钛硅介孔分子筛微粉混合研磨分散30min,得改性钛硅介孔分子筛微粉备用;
(2)先将NBR投入160℃密炼机中密炼15min,随后依次加入PVC、聚氨酯弹性体、硼砂、大豆油、8羟基喹啉、改性钛硅介孔分子筛微粉、环氧脂肪酸甲酯、光稳定剂、钙锌稳定剂、甲基丙烯酸锌,继续密炼30min后得复合基料,基料自然冷却至室温备用;
(3)将步骤(2)制备的基料与其它剩余成分投入炼胶机中,在50℃条件下混炼10min后薄通三次后出料;
(4)将步骤(3)所得片材在模具中,在160℃、10MPa条件下热压发泡14min,随后卸压冷却,即得所述复合发泡板。
制得的发泡板遵循相关标准进行性能测试,性能测试结果为:
表观密度:0.52g/cm3;拉伸强度:44.5MPa;断裂伸长率:206.5%;撕裂强度:4.2N/m;氧指数≥30%;耐热性:在80℃条件下放置8h无变化。
Claims (2)
1.一种钛硅介孔分子筛改性的耐热老化的PVC-NBR复合发泡板,其特征在于,该复合发泡板由以下重量份的原料制得:PVC 40-50、NBR 25-30、聚氨酯弹性体12-15、钛硅介孔分子筛微粉5-6、8-羟基喹啉0.4-0.5、AC发泡剂2-5、硼酸三乙酯1-2、光稳定剂0.5-1、大豆油3-5、硼砂0.2-0.5、促进剂TMTD 0.4-0.5、云母粉2-3、硬脂酸0.5-1、硫化剂PDM 1-1.5、钙锌稳定剂4-5、硅烷偶联剂kh560 0.5-1、环氧脂肪酸甲酯5-8、甲基丙烯酸锌2-4。
2.如权利要求1所述的一种钛硅介孔分子筛改性的耐热老化的PVC-NBR复合发泡板的制备方法,其特征在于,所述的制备方法包括以下步骤:
(1)先将硅烷偶联剂kh560与钛硅介孔分子筛微粉混合研磨分散30-40min,得改性钛硅介孔分子筛微粉备用;
(2)先将NBR投入160℃密炼机中密炼15-20min,随后依次加入PVC、聚氨酯弹性体、硼砂、大豆油、8-羟基喹啉、改性钛硅介孔分子筛微粉、环氧脂肪酸甲酯、光稳定剂、钙锌稳定剂、甲基丙烯酸锌,继续密炼30-40min后得复合基料,基料自然冷却至室温备用;
(3)将步骤(2)制备的基料与其它剩余成分投入炼胶机中,在50℃条件下混炼10-15min后薄通三次后出料;
(4)将步骤(3)所得片材在模具中,在160-163℃、10-12MPa条件下热压发泡14-16min,随后卸压冷却,即得所述复合发泡板。
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CN106117912A (zh) * | 2016-08-12 | 2016-11-16 | 滁州市宏源喷涂有限公司 | 一种抗静电高耐热pvc‑nbr复合发泡板及其制备方法 |
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