CN117565526B - 一种高强度tpo防水卷材及其制备方法 - Google Patents
一种高强度tpo防水卷材及其制备方法 Download PDFInfo
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- CN117565526B CN117565526B CN202311520956.XA CN202311520956A CN117565526B CN 117565526 B CN117565526 B CN 117565526B CN 202311520956 A CN202311520956 A CN 202311520956A CN 117565526 B CN117565526 B CN 117565526B
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Abstract
本发明涉及防水卷材技术领域,具体为一种高强度TPO防水卷材及其制备方法,包括以下工艺:步骤1、TPO卷材的制备:取TPO、改性POE、四羟甲基甘脲、填料和助剂共挤,得到TPO卷材;步骤2、TPO防水卷材的制备:将步骤1中得到的TPO卷材的表面叠加涤纶布、网格布,形成结构由上至下依次为涤纶布、TPO卷材、网格布和TPO卷材的胚体,复合,得到TPO防水卷材。本发明通过POE‑g‑GMA与蓖麻油酸反应得到多羟基POE、γ‑氨丙基三乙氧基硅烷与4‑羧基‑1,8‑萘二酸酐反应得到酰亚胺硅氧烷,将二者反应得到的改性POE与TPO、填料等共混,使得所制TPO卷材具有更优的耐热、耐水和力学性能。
Description
技术领域
本发明涉及防水卷材技术领域,具体为一种高强度TPO防水卷材及其制备方法。
背景技术
防水卷材作为一种具有较好柔韧性,可弯曲的防水产品,能够抵挡室内外界中的雨水和空气渗透的建筑地下水以及室内空气中的水分,对建筑物防水有着至关重要的应用地位。作为防水卷材种类之一,TPO防水卷材为热塑性聚烯烃类防水卷材,是一种乙烯与丙烯共聚形成的聚合物,具有更加优异的综合特性。但现有的TPO防水卷材,其强度仍具有提升空间。因此,我们提出一种高强度TPO防水卷材及其制备方法。
发明内容
本发明的目的在于提供一种高强度TPO防水卷材及其制备方法,以解决上述背景技术中提出的问题。
为了解决上述技术问题,本发明提供如下技术方案:一种高强度TPO防水卷材,由上至下依次包括以下结构:涤纶布、TPO卷材、网格布和TPO卷材;
进一步的,所述TPO卷材包括以下质量组分:70~85份热塑性聚烯烃TPO、25~30份聚烯烃弹性体POE、10~20份填料、2.1~5.0份助剂;
聚烯烃弹性体POE:来源于陶氏化学有限公司。
进一步的,所述涤纶布为防水涤纶无纺布,厚度为0.8~1.2mm,来源于河间市峥涂鸿泰防水材料有限公司。
进一步的,所述网格布为玻璃纤维网格布,规格为80~100g/m2,来源于安平县川航丝网制品有限公司。
一种高强度TPO防水卷材的制备方法,包括以下工艺:
步骤1、TPO卷材的制备:取TPO、POE、填料和助剂共挤,得到TPO卷材;
步骤2、TPO防水卷材的制备:在步骤1中得到的TPO卷材的表面叠加涤纶布、网格布,形成结构由上至下依次为涤纶布、TPO卷材、网格布和TPO卷材的胚体,复合,得到TPO防水卷材。
进一步的,所述复合的工艺条件为:热压:温度165~200℃,压力2~5MPa,时间1~15min;
冷压:温度4~6℃,压力1~2MPa,时间12~20min。
进一步的,所述TPO卷材由以下工艺制得:
将TPO、改性POE、四羟甲基甘脲、填料和助剂混合,通过挤出机共混挤出,共混挤出的工艺条件为:加料段160~180℃,塑化段180~200℃,计量段190~210℃,模口温度180~200℃,螺杆转速40~50r/min,得到TPO卷材。
进一步的,所述TPO卷材包括以下质量组分:70~85份热塑性聚烯烃TPO、15~30份改性POE、3.0~5.4份四羟甲基甘脲、10~20份填料、2.1~5.0份助剂;
TPO卷材的厚度为1.2~2.0mm;
热塑性聚烯烃TPO:CA10A,来源于利安德巴赛尔工业公司;
填料为纳米活性碳酸钙,来源于武汉兴众诚科技有限公司;
进一步的,所述助剂包括1~3份钛白粉、0.3~0.5份抗氧剂、0.3~0.5份光稳定剂、0.5~1.0份润滑剂。
钛白粉:DR-2589,来源于江苏泛华化学科技有限公司;
抗氧剂为抗氧剂1010和抗氧剂168的混合物,来源于国药集团化学试剂有限公司;
光稳定剂为TINUVIN 770、TINUVIN7622、TINUVIN 765中的一种或多种混合,来源于德国巴斯夫股份公司;
润滑剂为硬脂酸、硬脂酸钙中的一种或两种混合,来源于国药集团化学试剂有限公司。
进一步的,所述改性POE有以下工艺制得:
步骤1.1多元醇的制备:
取POE-g-GMA,加入蓖麻油酸混合,在氮气气氛中静置100~150min;置于流变仪中,在温度170~180℃、转速50~100r/min条件下,反应5~10min;洗涤,干燥,得到多羟基POE;
步骤1.2.酰亚胺硅氧烷的制备:
将γ-氨丙基三乙氧基硅烷、4-羧基-1,8-萘二酸酐混合,升温至80~85℃,搅拌反应15~20min,得到酰胺酸硅氧烷;
加入碳酸钠、乙酸酐混合,搅拌,加热至100~105℃,反应60~75min;冷却,洗涤,干燥,得到酰亚胺硅氧烷;
步骤1.3.改性POE的制备:
将多羟基POE、酰亚胺硅氧烷混合,加入催化剂,置于流变仪中,在温度170~180℃、转速50~100r/min条件下,反应12~20min;洗涤,干燥,得到改性POE。
进一步的,步骤1.1中,POE-g-GMA、蓖麻油酸的质量比为100:(16~30);
POE-g-GMA:甲基丙烯酸缩水甘油酯接枝乙烯-辛烯共聚物,SOG-02,GMA含量为2.0wt%,来源于佳易容聚合物(上海)有限公司。
进一步的,步骤1.2中,所述4-羧基-1,8-萘二酸酐经过羧基保护处理,具体工艺为:
取4-羧基-1,8-萘二酸酐、1,4-二氧六环混合,加入异丁烯、三氟化硼***,于20~25℃温度下,搅拌反应150~200min;
4-羧基-1,8-萘二酸酐、异丁烯、三氟化硼***、1,4-二氧六环的比例为24g:(5.6~6.1)g:(4.2~4.7)g:100mL;
在改性POE使用前,即步骤1制备TPO卷材前,将其置于50%三氟乙酸的二氯甲烷溶液中,45~50℃温度下,搅拌反应60~75min,以脱除异丁烯基团;而后洗涤,干燥。
在上述技术方案中,异丁烯与4-羧基-1,8-萘二酸酐中的羧基反应,形成叔丁基酯,因其空间位阻效应,对碱的稳定性较高,能够避免羧基在上述改性POE的制备工艺中反应,使得4-羧基-1,8-萘二酸酐结构中的羧基得以保留,并在使用前脱除,利于所制改性POE在后续工艺中发挥应有作用。
进一步的,步骤1.2中,γ-氨丙基三乙氧基硅烷、4-羧基-1,8-萘二酸酐、碳酸钠的摩尔比为1:1:(0.15~0.17);
碳酸钠、乙酸酐的比例为0.6g/100mL。
进一步的,步骤1.3中,多羟基POE、酰亚胺硅氧烷、催化剂对甲苯磺酸的质量比为10:(23~33):(0.02~0.04)。
与现有技术相比,本发明的有益效果如下:
在上述技术方案中,选择碳酸钙作为填料与TPO、POE共混,能够降低TPO卷材的收缩性,提高其稳定性;具有较好的增韧效果,能够有效改善TPO的抗冲击强度,促进改善所制TPO卷材的力学性能。改性POE由POE-g-GMA为原料制备,与TPO共混后,能够有效改善所制TPO卷材的耐热性、耐水能力和韧性,降低其对缺口强度的敏感性;提高填料在TPO中的相容性,改善TPO卷材的加工性能;且其反应活性较高,利于后续工艺的进行。
将POE-g-GMA与蓖麻油酸混合,受亲电影响,POE-g-GMA中的环氧基团优先与蓖麻油酸中的羧基反应,形成酯基和羟基,协同蓖麻油酸中的羟基,得到接枝有多羟基-蓖麻油酸的乙烯-辛烯共聚物POE,记为多羟基POE;其中蓖麻油酸将长链不饱和烷基引入POE分子链中,形成梳状结构,其侧链之间出现分子斥力,使得POE主链被迫伸直,呈现棒状构象,分子无序程度降低,晶体规整性提高,在不影响其加工性能的同时,其侧链还能够在TPO卷材中作为TPO的结晶成核点,提高结晶速率和结晶度,促进结晶,有效改善了所制TPO卷材的拉伸强度和冲击强度。
γ-氨丙基三乙氧基硅烷与经过羧基保护后的4-羧基-1,8-萘二酸酐混合,使得氨基与酸酐反应,生成酰胺酸后亚胺化,得到具有酰亚胺基团的硅氧烷,记为酰亚胺硅氧烷。利用改性POE中的羟基与酰亚胺硅氧烷中的硅氧键反应,得到具有支化结构的聚硅氧烷改性POE,提高所制改性POE的韧性,实现对TPO的进一步增韧,能够促进所制TPO卷材的良好刚韧平衡。而萘、酰亚胺结构的引入,能够对分子链进行挤压,促进分子结构的有序化,并能够阻碍晶体的生长,从而细化晶粒,提高TPO卷材的耐热性和力学性能,并能够使得TPO卷材表面趋向粗糙化,结合基团和分子结构影响,提高TPO卷材的耐水能力。
在TPO卷材的制备中,四羟甲基甘脲能够作为交联剂,将其羟甲基与体系中的羧基(来源于改性POE、润滑剂)反应,使得分子链发生交联,形成三维互穿网络结构,进一步改善了TPO卷材及其所制TPO防水卷材的耐热、耐水、力学性能等综合性能。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
在以下具体实施方式中:
热塑性聚烯烃TPO:CA10A,来源于利安德巴赛尔工业公司;
POE-g-GMA:甲基丙烯酸缩水甘油酯接枝乙烯-辛烯共聚物,SOG-02,GMA含量为2.0wt%,来源于佳易容聚合物(上海)有限公司;
填料为纳米活性碳酸钙,来源于武汉兴众诚科技有限公司;
钛白粉:DR-2589,来源于江苏泛华化学科技有限公司;
抗氧剂为抗氧剂1010和抗氧剂168的混合物,来源于国药集团化学试剂有限公司;
光稳定剂为TINUVIN 770,来源于德国巴斯夫股份公司;
润滑剂为硬脂酸、硬脂酸钙的混合物,来源于国药集团化学试剂有限公司;
涤纶布为防水涤纶无纺布,厚度为1.0mm,来源于河间市峥涂鸿泰防水材料有限公司;
网格布为玻璃纤维网格布,规格为100g/m2,来源于安平县川航丝网制品有限公司;
聚烯烃弹性体POE:来源于陶氏化学有限公司;
POE-g-MAH:DF610,来源于沈阳四维塑胶有限公司。
实施例1:一种高强度TPO防水卷材的制备方法,包括以下工艺:
步骤1、TPO卷材的制备:
步骤1.1多元醇的制备:
取POE-g-GMA,加入蓖麻油酸混合,在氮气气氛中静置100min;置于流变仪中,在温度170℃、转速100r/min条件下,反应10min;洗涤,干燥,得到多羟基POE;POE-g-GMA、蓖麻油酸的质量比为100:16;
步骤1.2.酰亚胺硅氧烷的制备:
将γ-氨丙基三乙氧基硅烷、4-羧基-1,8-萘二酸酐混合,升温至80℃,搅拌反应20min,得到酰胺酸硅氧烷;加入碳酸钠、乙酸酐混合,搅拌,加热至100℃,反应75min;冷却,洗涤,干燥,得到酰亚胺硅氧烷;γ-氨丙基三乙氧基硅烷、4-羧基-1,8-萘二酸酐、碳酸钠的摩尔比为1:1:0.15;碳酸钠、乙酸酐的比例为0.6g/100mL;
4-羧基-1,8-萘二酸酐经过羧基保护处理,具体工艺为:
取4-羧基-1,8-萘二酸酐、1,4-二氧六环混合,加入异丁烯、三氟化硼***,于20℃温度下,搅拌反应200min;4-羧基-1,8-萘二酸酐、异丁烯、三氟化硼***、1,4-二氧六环的比例为24g:5.6g:4.2g:100mL;
在改性POE使用前,即步骤1.4.制备TPO卷材前,将改性POE置于50%三氟乙酸的二氯甲烷溶液中,45℃温度下,搅拌反应75min,催化水解,以脱除异丁烯基团;而后洗涤,干燥;
步骤1.3.改性POE的制备:
将多羟基POE、酰亚胺硅氧烷混合,加入催化剂,置于流变仪中,在温度170℃、转速100r/min条件下,反应20min;洗涤,干燥,得到改性POE;多羟基POE、酰亚胺硅氧烷、催化剂对甲苯磺酸的质量比为10:23:0.02;
步骤1.4.TPO卷材的制备:
将TPO、改性POE、四羟甲基甘脲、填料和助剂混合,通过挤出机共混挤出,共混挤出的工艺条件为:加料段170℃,塑化段190℃,计量段200℃,模口温度190℃,螺杆转速40r/min,得到厚度为1.6mm的TPO卷材;TPO卷材包括以下质量组分:85份热塑性聚烯烃TPO、15份改性POE、3.0份四羟甲基甘脲、10份填料、2.1份助剂;助剂包括1份钛白粉、0.3份抗氧剂、0.3份光稳定剂、0.5份润滑剂;
步骤2、TPO防水卷材的制备:
将步骤1中得到的TPO卷材的表面叠加涤纶布、网格布,形成结构由上至下依次为涤纶布、TPO卷材、网格布和TPO卷材的胚体,复合,复合的工艺条件为:热压:温度165℃,压力2MPa,时间15min;冷压:温度4℃,压力2MPa,时间20min,得到TPO防水卷材。
实施例2:一种高强度TPO防水卷材的制备方法,包括以下工艺:
步骤1、TPO卷材的制备:
步骤1.1多元醇的制备:
取POE-g-GMA,加入蓖麻油酸混合,在氮气气氛中静置100~150min;置于流变仪中,在温度175℃、转速75r/min条件下,反应8min;洗涤,干燥,得到多羟基POE;POE-g-GMA、蓖麻油酸的质量比为100:23;
步骤1.2.酰亚胺硅氧烷的制备:
将γ-氨丙基三乙氧基硅烷、4-羧基-1,8-萘二酸酐混合,升温至82℃,搅拌反应18min,得到酰胺酸硅氧烷;加入碳酸钠、乙酸酐混合,搅拌,加热至102℃,反应68min;冷却,洗涤,干燥,得到酰亚胺硅氧烷;γ-氨丙基三乙氧基硅烷、4-羧基-1,8-萘二酸酐、碳酸钠的摩尔比为1:1:0.16;碳酸钠、乙酸酐的比例为0.6g/100mL;
4-羧基-1,8-萘二酸酐经过羧基保护处理,具体工艺为:
取4-羧基-1,8-萘二酸酐、1,4-二氧六环混合,加入异丁烯、三氟化硼***,于22℃温度下,搅拌反应180min;4-羧基-1,8-萘二酸酐、异丁烯、三氟化硼***、1,4-二氧六环的比例为24g:5.8g:4.5g:100mL;
在改性POE使用前,即步骤1.4.制备TPO卷材前,将改性POE置于50%三氟乙酸的二氯甲烷溶液中,48℃温度下,搅拌反应68min,催化水解,以脱除异丁烯基团;而后洗涤,干燥;
步骤1.3.改性POE的制备:
将多羟基POE、酰亚胺硅氧烷混合,加入催化剂,置于流变仪中,在温度175℃、转速75r/min条件下,反应16min;洗涤,干燥,得到改性POE;多羟基POE、酰亚胺硅氧烷、催化剂对甲苯磺酸的质量比为10:28:0.03;
步骤1.4.TPO卷材的制备:
将TPO、改性POE、四羟甲基甘脲、填料和助剂混合,通过挤出机共混挤出,共混挤出的工艺条件为:加料段170℃,塑化段190℃,计量段200℃,模口温度190℃,螺杆转速45r/min,得到厚度为1.6mm的TPO卷材;TPO卷材包括以下质量组分:78份热塑性聚烯烃TPO、23份改性POE、4.2份四羟甲基甘脲、15份填料、3.6份助剂;助剂包括2份钛白粉、0.4份抗氧剂、0.4份光稳定剂、0.8份润滑剂;
步骤2、TPO防水卷材的制备:
将步骤1中得到的TPO卷材的表面叠加涤纶布、网格布,形成结构由上至下依次为涤纶布、TPO卷材、网格布和TPO卷材的胚体,复合,复合的工艺条件为:热压:温度190℃,压力3MPa,时间8min;冷压:温度5℃,压力1.5MPa,时间16min,得到TPO防水卷材。
实施例3:一种高强度TPO防水卷材的制备方法,包括以下工艺:
步骤1、TPO卷材的制备:
步骤1.1多元醇的制备:
取POE-g-GMA,加入蓖麻油酸混合,在氮气气氛中静置150min;置于流变仪中,在温度180℃、转速50r/min条件下,反应5min;洗涤,干燥,得到多羟基POE;POE-g-GMA、蓖麻油酸的质量比为100:30;
步骤1.2.酰亚胺硅氧烷的制备:
将γ-氨丙基三乙氧基硅烷、4-羧基-1,8-萘二酸酐混合,升温至85℃,搅拌反应15~min,得到酰胺酸硅氧烷;加入碳酸钠、乙酸酐混合,搅拌,加热至105℃,反应60min;冷却,洗涤,干燥,得到酰亚胺硅氧烷;γ-氨丙基三乙氧基硅烷、4-羧基-1,8-萘二酸酐、碳酸钠的摩尔比为1:1:0.17;碳酸钠、乙酸酐的比例为0.6g/100mL;
4-羧基-1,8-萘二酸酐经过羧基保护处理,具体工艺为:
取4-羧基-1,8-萘二酸酐、1,4-二氧六环混合,加入异丁烯、三氟化硼***,于25℃温度下,搅拌反应150min;4-羧基-1,8-萘二酸酐、异丁烯、三氟化硼***、1,4-二氧六环的比例为24g:6.1g:4.7g:100mL;
在改性POE使用前,即步骤1.4.制备TPO卷材前,将改性POE置于50%三氟乙酸的二氯甲烷溶液中,50℃温度下,搅拌反应60min,催化水解,以脱除异丁烯基团;而后洗涤,干燥;
步骤1.3.改性POE的制备:
将多羟基POE、酰亚胺硅氧烷混合,加入催化剂,置于流变仪中,在温度180℃、转速50r/min条件下,反应12min;洗涤,干燥,得到改性POE;多羟基POE、酰亚胺硅氧烷、催化剂对甲苯磺酸的质量比为10:33:0.04;
步骤1.4.TPO卷材的制备:
将TPO、改性POE、四羟甲基甘脲、填料和助剂混合,通过挤出机共混挤出,共混挤出的工艺条件为:加料段170℃,塑化段190℃,计量段200℃,模口温度190℃,螺杆转速50r/min,得到厚度为1.6mm的TPO卷材;TPO卷材包括以下质量组分:70份热塑性聚烯烃TPO、30份改性POE、5.4份四羟甲基甘脲、20份填料、5.0份助剂;助剂包括3份钛白粉、0.5份抗氧剂、0.5份光稳定剂、1.0份润滑剂;
步骤2、TPO防水卷材的制备:
将步骤1中得到的TPO卷材的表面叠加涤纶布、网格布,形成结构由上至下依次为涤纶布、TPO卷材、网格布和TPO卷材的胚体,复合,复合的工艺条件为:热压:温度200℃,压力2MPa,时间1min;冷压:温度6℃,压力1MPa,时间20min,得到TPO防水卷材。
对比例1:一种高强度TPO防水卷材的制备方法,包括以下工艺:
步骤1、TPO卷材的制备:
步骤1.1多元醇的制备:
取POE-g-GMA,加入蓖麻油酸混合,在氮气气氛中静置100min;置于流变仪中,在温度170℃、转速100r/min条件下,反应10min;洗涤,干燥,得到多羟基POE;POE-g-GMA、蓖麻油酸的质量比为100:16;
步骤1.2.改性POE的制备:
将多羟基POE、γ-氨丙基三乙氧基硅烷混合,加入催化剂,置于流变仪中,在温度170℃、转速100r/min条件下,反应20min;洗涤,干燥,得到改性POE;多羟基POE、酰亚胺硅氧烷、催化剂对甲苯磺酸的质量比为10:23:0.02;
步骤1.3和步骤2与实施例1中的步骤1.4、步骤2相同,得到TPO防水卷材。
对比例2:一种高强度TPO防水卷材的制备方法,包括以下工艺:
步骤1、TPO卷材的制备:
将TPO、POE-g-MAH、四羟甲基甘脲、填料和助剂混合,通过挤出机共混挤出,共混挤出的工艺条件为:加料段170℃,塑化段190℃,计量段200℃,模口温度190℃,螺杆转速40r/min,得到厚度为1.6mm的TPO卷材;TPO卷材包括以下质量组分:85份热塑性聚烯烃TPO、15份POE-g-MAH、3.0份四羟甲基甘脲、10份填料、2.1份助剂;助剂包括1份钛白粉、0.3份抗氧剂、0.3份光稳定剂、0.5份润滑剂;
步骤2与实施例1中的步骤2相同,得到TPO防水卷材。
对比例3:一种高强度TPO防水卷材的制备方法,包括以下工艺:
步骤1、TPO卷材的制备:
将TPO、POE、填料和助剂混合,通过挤出机共混挤出,共混挤出的工艺条件为:加料段170℃,塑化段190℃,计量段200℃,模口温度190℃,螺杆转速40r/min,得到厚度为1.6mm的TPO卷材;TPO卷材包括以下质量组分:85份热塑性聚烯烃TPO、15份POE、10份填料、2.1份助剂;助剂包括1份钛白粉、0.3份抗氧剂、0.3份光稳定剂、0.5份润滑剂;
步骤2与实施例1中的步骤2相同,得到TPO防水卷材。
实验:取实施例1-3、对比例1-3中得到的TPO防水卷材,制得试样,分别对其性能进行检测并记录检测结果:
力学性能测试:以GB/T 328.9为参考标准,对TPO卷材试样的拉伸性能进行测试,拉伸速率200mm/min;
抗冲击性能测试:以GB/T 1843为参考标准,对TPO卷材试样进行悬臂梁缺口冲击测试,实验温度-20℃;
耐水性能测试:将TPO卷材试样置于70℃热水中,浸没168h取出,擦干水分,记录并计算实验前后试样的质量变化率,记为吸水率;
在耐水性能测试后,再次对试样进行力学性能测试,得到耐热水老化性能数据。
拉伸强度(MPa) | 缺口冲击强度(kJ/m2) | 吸水率(%) | 老化后拉伸强度(MPa) | |
实施例1 | 18.7 | 80.7 | 1.2 | 16.5 |
实施例2 | 20.4 | 84.5 | 0.7 | 18.2 |
实施例3 | 21.3 | 87.1 | 0.3 | 19.4 |
对比例1 | 15.2 | 74.8 | 2.4 | 12.1 |
对比例2 | 14.7 | 70.0 | 7.6 | 10.0 |
对比例3 | 12.8 | 62.7 | 4.7 | 8.9 |
根据上表中的数据,可以清楚得到以下结论:
实施例1-3中得到的TPO卷材与对比例1-3中得到的TPO卷材形成对比,检测结果可知,与对比例相比,实施例1-3中得到的TPO卷材,其拉伸强度、缺口冲击强度、吸水率和老化后拉伸强度数据更优,这充分说明了本发明实现了对TPO卷材及其所制TPO防水卷材耐热、耐水、力学性能等综合性能的提高。
与实施例1相比,对比例1将酰亚胺硅氧烷替换为等质量的γ-氨丙基三乙氧基硅烷;对比例2将改性POE替换为等质量的POE-g-MAH;对比例3中的TPO卷材由热塑性聚烯烃TPO、POE、填料和助剂制得;对比例1-3中得到的TPO卷材,其拉伸强度、缺口冲击强度、吸水率和老化后拉伸强度数据变差,可知本发明对POE改性工艺及其所使用组分的设置,能够促进TPO卷材及其所制TPO防水卷材耐热、耐水、力学性能等综合性能的改善。
需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程方法物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程方法物品或者设备所固有的要素。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改等同替换改进等,均应包含在本发明的保护范围之内。
Claims (8)
1.一种高强度TPO防水卷材的制备方法,其特征在于:包括以下工艺:
步骤1、TPO卷材的制备:取TPO、改性POE、四羟甲基甘脲、填料和助剂共挤,得到TPO卷材;
步骤2、TPO防水卷材的制备:在步骤1中得到的TPO卷材的表面叠加涤纶布、网格布,形成结构由上至下依次为涤纶布、TPO卷材、网格布和TPO卷材的胚体;复合,得到TPO防水卷材;
所述TPO卷材包括以下质量组分:70~85份热塑性聚烯烃TPO、15~30份改性POE、3.0~5.4份四羟甲基甘脲、10~20份填料、2.1~5.0份助剂;
所述改性POE有以下工艺制得:
步骤1.1多元醇的制备:
取POE-g-GMA,加入蓖麻油酸混合,在氮气气氛中静置100~150min;置于流变仪中,在温度170~180℃、转速50~100r/min条件下,反应5~10min,得到多羟基POE;
步骤1.2.酰亚胺硅氧烷的制备:
将γ-氨丙基三乙氧基硅烷、4-羧基-1,8-萘二酸酐混合,升温至80~85℃,搅拌反应15~20min,得到酰胺酸硅氧烷;
加入碳酸钠、乙酸酐混合,搅拌,加热至100~105℃,反应60~75min,得到酰亚胺硅氧烷;
步骤1.3.改性POE的制备:
将多羟基POE、酰亚胺硅氧烷混合,加入催化剂,置于流变仪中,在温度170~180℃、转速50~100r/min条件下,反应12~20min,得到改性POE。
2.根据权利要求1所述的一种高强度TPO防水卷材的制备方法,其特征在于:步骤1.1中,POE-g-GMA、蓖麻油酸的质量比为100:(16~30)。
3.根据权利要求1所述的一种高强度TPO防水卷材的制备方法,其特征在于:步骤1.2中,4-羧基-1,8-萘二酸酐经过羧基保护处理;
γ-氨丙基三乙氧基硅烷、4-羧基-1,8-萘二酸酐、碳酸钠的摩尔比为1:1:(0.15~0.17)。
4.根据权利要求1所述的一种高强度TPO防水卷材的制备方法,其特征在于:步骤1.3中,多羟基POE、酰亚胺硅氧烷、催化剂对甲苯磺酸的质量比为10:(23~33):(0.02~0.04)。
5.根据权利要求1所述的一种高强度TPO防水卷材的制备方法,其特征在于:所述复合的工艺条件为:热压:温度165~200℃,压力2~5MPa,时间1~15min;
冷压:温度4~6℃,压力1~2MPa,时间12~20min。
6.根据权利要求1所述的一种高强度TPO防水卷材的制备方法,其特征在于:所述步骤1中,共挤的工艺条件为:加料段160~180℃,塑化段180~200℃,计量段190~210℃,模口温度180~200℃,螺杆转速40~50r/min。
7.根据权利要求1所述的一种高强度TPO防水卷材的制备方法,其特征在于:所述助剂包括1~3份钛白粉、0.3~0.5份抗氧剂、0.3~0.5份光稳定剂、0.5~1.0份润滑剂。
8.根据权利要求1-7任一项所述制备方法制得的一种高强度TPO防水卷材。
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