CN104650501A - 一种耐高温、高韧性pvc-u双壁波纹管及制备方法 - Google Patents

一种耐高温、高韧性pvc-u双壁波纹管及制备方法 Download PDF

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CN104650501A
CN104650501A CN201510067489.9A CN201510067489A CN104650501A CN 104650501 A CN104650501 A CN 104650501A CN 201510067489 A CN201510067489 A CN 201510067489A CN 104650501 A CN104650501 A CN 104650501A
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吴小波
徐婷玉
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HANGZHOU BODA PLASTICS TECHNOLOGY Inc Co Ltd
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Abstract

本发明涉及一种耐高温、高韧性PVC-U双壁波纹管及制备方法，由下述重量份的原料组成：SG-5型PVC树脂55-75份，高聚合度聚氯乙烯20-40份，抗冲改性母粒5-16份，不锈钢纤维母粒4-5份，复配型热稳定剂4-8份，复合润滑剂0.5-1.0份。该方法的步骤如下：将原料按照上述的重量份配比进行备料；将备料放入高速混料机中共混至95℃出料，冷混至45℃，并在此温度下放料备用；将备用的料在PVC-U双壁波纹管材挤出设备上挤出成型，由切割机定长切割，送入扩口机扩口，检验入库；挤出机筒身温度150-175℃，口模温度不大于210℃。本发明的有益效果是：解决了PVC-U管材高温下力学性能降低的问题，提高了PVC-U管的韧性。

Description

一种耐高温、高韧性PVC-U双壁波纹管及制备方法
技术领域
本发明涉及双壁波纹管材领域，具体涉及一种耐高温、高韧性PVC-U双壁波纹管及制备方法。
背景技术
硬质聚氯乙烯(PVC-U)管材是目前我国应用最广的塑料管材，被广泛用于建筑给水、建筑排水、埋地给水、埋地排水、工业和农业用管等各个领域。PVC-U排水管具有较佳的物理化学性能，它内壁光滑、摩擦阻力小，因此其横管安装坡度较小，能够提高建筑的室内净高。同时，它重量较轻，方便安装及维修，有利于施工单位节省开支、降低成本，缩短工程周期，也提高了建筑物的经济性。而特有的机械物理性能使其能正常使用达50年之久。
传统的PVC-U管材虽然具有高模量、高强度且价格较低等优点，但由于PVC-U管材刚而不韧，抗冲击和抗开裂性能差，在运输、安装及使用过程中容易发生脆裂破坏。特别是在高层建筑中，由于PVC-U管材易收到水压重力流和压力流两种状态及污垢或杂质堵塞作用，极易导致PVC-U管材脆裂破坏。此外，普通PVC材料的耐热性能较差，在60℃以上环境中使用时，其力学强度有较大程度的下降降低。
发明内容
本发明的目的正是为了克服上述技术的不足，而提供一种采用多重界面增韧技术及添加不锈钢纤维的耐高温、高韧性PVC-U双壁波纹管及制备方法，该耐高温、高韧性PVC-U双壁波纹管在高温下仍能保证较高的刚度和抗压强度。
本发明的目的是通过如下技术方案来完成的。这种耐高温、高韧性PVC-U双壁波纹管，由下述重量份的原料组成：SG-5型PVC树脂55-75份，高聚合度聚氯乙烯20-40份，抗冲改性母粒5-16份，不锈钢纤维母粒4-5份，复配型热稳定剂4-8份，复合润滑剂0.5-1.0份。
作为优选，所述的高聚合度聚氯乙烯的聚合度为2500。
作为优选，所述的抗冲改性母粒，由下述重量份的原料组成：POE塑料2-10份，马来酸酐接枝聚乙烯1-2份，空心玻璃微球3-6份；所述马来酸酐接枝聚乙烯的接枝率为2.0％，空心玻璃微球的粒径为3-10微米。
本发明所述的这种耐高温、高韧性PVC-U双壁波纹管的制备方法，该方法的步骤如下：
(1)、将原料按照如下重量份配比进行备料：SG-5型PVC树脂55-75份，高聚合度聚氯乙烯20-40份，抗冲改性母粒5-16份，不锈钢纤维母粒4-5份，复配型热稳定剂4-8份，复合润滑剂0.5-1.0份；
(2)、将步骤(1)的备料放入高速混料机中共混至95℃出料，冷混至45℃，并在此温度下放料备用；
(3)、将备用的料在PVC-U双壁波纹管材挤出设备上挤出成型，由切割机定长切割，送入扩口机扩口，检验入库；挤出机筒身温度150-175℃，口模温度不大于210℃。
更进一步的，所述抗冲改性母粒的制备方法，包括如下步骤：将原料按重量份配比：POE塑料2-10份、马来酸酐接枝聚乙烯1-2份和空心玻璃微球3-6份，在室温下以100-200转/分搅拌分散5-10分钟，在120-140℃温度下进行搅拌，搅拌均匀后自动冷却，经振动筛过后，自动上料，由单螺杆挤出机挤出造粒，即得所述抗冲改性母粒。
作为优选，所述不锈钢纤维母粒为上海卡吉特化工科技有限公司的不锈钢纤维母粒MF65-3；所述复配型热稳定剂为国产CZ-601型钙/锌热稳定剂；所述复合润滑剂为复合润滑剂HB-600C。
本发明的有益效果为：解决了PVC-U管材高温下力学性能降低的问题，提高了PVC-U管的韧性；本发明采用不锈钢纤维母料及高聚合度聚氯乙烯为改性剂改善PVC-U管耐高温性能的同时可提高管材韧性，其中不锈钢纤维在应力作用下具有一定的塑性变形的能力，同时可在管材基体中引入PVC/不锈钢纤维界面，从而可提高PVC管的韧性，并作为一种纤维增强材料提高管材的耐高温性能；采用POE弹性体包覆空心玻璃微球形成的填料为改性剂在PVC体系中引入双重界面，即PVC/POE界面以及POE/空心玻璃微球界面，从而提高PVC管的韧性，同时由于空心玻璃微球的中空结构，可降低管材热导率从而降低管材对高温的敏感度。
具体实施方式
下面通过具体实施方式对本发明作进一步阐述，实施例将帮助更好地理解本发明，但本发明并不仅仅局限于下述实施例。
实施例1：这种耐高温、高韧性PVC-U双壁波纹管，由下述重量份的原料组成：SG-5型PVC树脂65份，高聚合度聚氯乙烯35份，抗冲改性母粒5份，不锈钢纤维母粒5份，复配型热稳定剂6份，复合润滑剂0.8份。其中，所述的抗冲改性母粒，由下述重量份的原料组成：POE塑料10份，马来酸酐接枝聚乙烯2份，空心玻璃微球6份；所述马来酸酐接枝聚乙烯的接枝率为2.0％，空心玻璃微球的粒径为3-10微米。
这种耐高温、高韧性PVC-U双壁波纹管的制备方法，该方法的步骤如下：
(1)、将原料按照如下重量份配比进行备料：SG-5型PVC树脂65份，高聚合度聚氯乙烯35份，抗冲改性母粒5份，不锈钢纤维母粒5份，复配型热稳定剂6份，复合润滑剂0.8份；
(2)、将步骤(1)的备料放入高速混料机中共混至95℃出料，冷混至45℃，并在此温度下放料备用；
(3)、将备用的料在PVC-U双壁波纹管材挤出设备上挤出成型，由切割机定长切割，送入扩口机扩口，检验入库；挤出机筒身温度170℃，口模温度180℃。
所述抗冲改性母粒的制备方法，包括如下步骤：将原料按重量份配比：POE塑料10份，马来酸酐接枝聚乙烯2份，空心玻璃微球6份，在室温下以100-200转/分搅拌分散5-10分钟，在120-140℃温度下进行搅拌，搅拌均匀后自动冷却，经振动筛过后，自动上料，由单螺杆挤出机挤出造粒，即得所述抗冲改性母粒。
实施例2：本实施例所述的这种耐高温、高韧性PVC-U双壁波纹管的制备方法，与实施例1相同。与实施例1的区别点在于：这种耐高温、高韧性PVC-U双壁波纹管，由下述重量份的原料组成：SG-5型PVC树脂65份，聚合度为2500的高聚合度聚氯乙烯35份，抗冲改性母粒10份，不锈钢纤维母粒5份，复配型热稳定剂6份，复合润滑剂0.8份。其中，所述的抗冲改性母粒，由下述重量份的原料组成：POE塑料10份，马来酸酐接枝聚乙烯2份，空心玻璃微球6份；所述马来酸酐接枝聚乙烯的接枝率为2.0％，空心玻璃微球的粒径为3-10微米。
实施例3：与实施例1的不同之于，这种耐高温、高韧性PVC-U双壁波纹管，由下述重量份的原料组成：SG-5型PVC树脂55份，高聚合度聚氯乙烯20份，抗冲改性母粒5份，不锈钢纤维母粒4份，复配型热稳定剂4份，复合润滑剂0.5份。所述的抗冲改性母粒，由下述重量份的原料组成：POE塑料2份，马来酸酐接枝聚乙烯1份，空心玻璃微球3份。
实施例4：与实施例1的不同之于，这种耐高温、高韧性PVC-U双壁波纹管，由下述重量份的原料组成：SG-5型PVC树脂75份，高聚合度聚氯乙烯40份，抗冲改性母粒16份，不锈钢纤维母粒5份，复配型热稳定剂8份，复合润滑剂1.0份。所述的抗冲改性母粒，由下述重量份的原料组成：POE塑料5份，马来酸酐接枝聚乙烯2份，空心玻璃微球5份。
实施例5：与实施例1的不同之于，这种耐高温、高韧性PVC-U双壁波纹管，由下述重量份的原料组成：SG-5型PVC树脂60份，高聚合度聚氯乙烯30份，抗冲改性母粒10份，不锈钢纤维母粒5份，复配型热稳定剂6份，复合润滑剂0.9份。所述的抗冲改性母粒，由下述重量份的原料组成：POE塑料8份，马来酸酐接枝聚乙烯1份，空心玻璃微球4份。
以上所述，仅为本发明较好的实施方式而已，并不构成对本发明保护范围的限定。任何在本发明精神之内所作的修改、等同替换和改进等，均应包含在本发明的权利要求保护范围之内。

Claims (5)

1.一种耐高温、高韧性PVC-U双壁波纹管，其特征是：由下述重量份的原料组成：SG-5型PVC树脂55-75份，高聚合度聚氯乙烯20-40份，抗冲改性母粒5-16份，不锈钢纤维母粒4-5份，复配型热稳定剂4-8份，复合润滑剂0.5-1.0份。
2.根据权利要求1所述的耐高温、高韧性PVC-U双壁波纹管，其特征是：所述的高聚合度聚氯乙烯的聚合度为2500。
3.根据权利要求1所述的耐高温、高韧性PVC-U双壁波纹管，其特征是：所述的抗冲改性母粒，由下述重量份的原料组成：POE塑料2-10份，马来酸酐接枝聚乙烯1-2份，空心玻璃微球3-6份；所述马来酸酐接枝聚乙烯的接枝率为2.0％，空心玻璃微球的粒径为3-10微米。
4.一种制备如权利要求1所述的耐高温、高韧性PVC-U双壁波纹管的方法，其特征在于：该方法的步骤如下：
(1)、将原料按照如下重量份配比进行备料：SG-5型PVC树脂55-75份，高聚合度聚氯乙烯20-40份，抗冲改性母粒5-16份，不锈钢纤维母粒4-5份，复配型热稳定剂4-8份，复合润滑剂0.5-1.0份；
(2)、将步骤(1)的备料放入高速混料机中共混至95℃出料，冷混至45℃，并在此温度下放料备用；
(3)、将备用的料在PVC-U双壁波纹管材挤出设备上挤出成型，由切割机定长切割，送入扩口机扩口，检验入库；挤出机筒身温度150-175℃，口模温度不大于210℃。
5.根据权利要求4所述的耐高温、高韧性PVC-U双壁波纹管的制备方法，其特征在于：所述抗冲改性母粒的制备方法，包括如下步骤：将原料按重量份配比：POE塑料2-10份、马来酸酐接枝聚乙烯1-2份和空心玻璃微球3-6份，在室温下以100-200转/分搅拌分散5-10分钟，在120-140℃温度下进行搅拌，搅拌均匀后自动冷却，经振动筛过后上料，由单螺杆挤出机挤出造粒，即得所述抗冲改性母粒。
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Application publication date: 20150527