CN108017818B - 一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管 - Google Patents

一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管 Download PDF

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CN108017818B
CN108017818B CN201710997453.XA CN201710997453A CN108017818B CN 108017818 B CN108017818 B CN 108017818B CN 201710997453 A CN201710997453 A CN 201710997453A CN 108017818 B CN108017818 B CN 108017818B
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高莉
张伟娇
毛星剑
黄咸伟
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Linhai Weixing New Building Materials Co Ltd
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Abstract

本发明涉及一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，它由内层、中间层及外层分别在熔融状态下采用共挤一体化成型工艺制备得到，复合管的内层为改性超高分子量聚乙烯层，中间层为复配热熔胶层，外层为无规共聚聚丙烯层。本发明将改性超高分子量聚乙烯、热熔胶和共聚聚丙烯分别在熔融状态下进行复合，复配热熔胶使得两种材料复合层之间结构致密并完全融合成一体。本发明的PPR与改性超高分子量聚乙烯抗结垢复合管，其加工性能好、耐低温性能好、抗结垢、制造成本低，是传输冷热水的新型管材，适用于高端家装的水路系统。

Description

一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管
技术领域
本发明属于复合管道技术领域，具体涉及一种耐高温且能用于热水管路系统的抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管。
背景技术
超高分子量聚乙烯具有自润滑、超耐磨、耐腐蚀、强度高等优点，但加工十分困难，通过改性的超高分子量聚乙烯加工性能好，且又保持原有的性能，因此具有很大的市场应用前景。而普通的PPR管材已经不能满足当前多功能的需求，结合改性的超高分子量聚乙烯优异的性能，通过复配热熔胶和普通PPR进行复合制备出新型的抗结垢管材，其优异的高强度、抗结垢性能在高端管道系统具有很大的市场空间。
发明内容
针对现有技术中存在的上述问题，本发明的目的在于提供一种耐高温且能用于热水管路系统的抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管。
所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于由内层、中间层及外层分别在熔融状态下采用共挤一体化成型工艺制备得到，所述复合管的内层为改性超高分子量聚乙烯层，中间层为复配热熔胶层，外层为无规共聚聚丙烯层。
所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于复配热熔胶层由以下重量百分比的组份组成：3-20%硅烷交联改性聚乙烯、30-60%马来酸酐改性聚乙烯、20-45%马来酸酐改性聚丙烯、2-5%钛酸丁酯。
所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于复配热熔胶层由以下重量百分比的组份组成：5-15%硅烷交联改性聚乙烯、40-55%马来酸酐改性聚乙烯、25-40%马来酸酐改性聚丙烯、2-5%钛酸丁酯。
所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于所述无规共聚聚丙烯层由以下重量份数的组份组成：无规共聚聚丙烯100份，黑色母1-5份。
所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于所述无规共聚聚丙烯层由以下重量份数的组份组成：无规共聚聚丙烯100份，黑色母2-4份。
所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于所述改性超高分子量聚乙烯层由以下重量份数的组份组成：改性超高分子量聚乙烯100份，纳米钛白粉抗菌母粒1-6份。
所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于所述改性超高分子量聚乙烯层由以下重量份数的组份组成：改性超高分子量聚乙烯100份，纳米钛白粉抗菌母粒2-4份。
所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于纳米钛白粉抗菌母粒包括以下重量份数的组份：颗粒状II型PERT 50份 纳米钛白粉 8-12份、PE蜡1-3份。
所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于纳米钛白粉抗菌母粒包括以下重量份数的组份：颗粒状II型PERT 50份 纳米钛白粉 10份、PE蜡2份。
通过采用上述技术，与现有技术相比，本发明的有益效果如下：
1）通过对外层配方的设计，管材外层无规共聚聚丙烯层配方中加入黑色母，使得管材的透光率由原有管材的0.2%下降到0，杜绝了管材因光线透过造成的藻类植物和微生物孢子产生的繁殖生长造成的微生物粘泥结垢。
2）通过采用限定配方的改性超高分子量聚乙烯层作为内层，使管道的粗糙度RA由0.8um降低到0.02um，极大提高了管道的抗结垢性能；
3）内层超高分子量聚乙烯层中添加纳米钛白粉抗菌母粒，能有效影响细菌的繁殖，破坏细菌的细胞膜结构，达到彻底降解细菌，防止管道二次污染。
4）本发明通过采用限定的配方得到复配热熔胶层，大大提高了其耐高温性，从常规的耐热温度为60℃提高到90℃以上，使该复合管能应用于热水管路系统，且具有更长更稳定的使用寿命；同时该热熔胶有效解决了因PP-R与超高分子量分子结构差异造成的层与层之间的不相容问题。
5）本发明通过采用内层改性超高分子量聚乙烯层内层、中间层复配热熔胶层及外层无规共聚聚丙烯层分别在熔融状态下采用共挤一体化成型工艺制备得到复合管，内壁光滑，同时保留了PP-R管道的长期耐热性能，其加工性能好、制造成本低，是传输冷热水的新型管材，适用于高端家装的水路系统。
具体实施方式
下面通过实施例，对本发明的技术方案作进一步具体的说明。
实施例1
a)复配热熔胶的制备：将6千克硅烷交联改性聚乙烯、50千克马来酸酐改性聚乙烯、38千克马来酸酐改性聚丙烯放于搅拌机内搅拌3分钟，然后加入2千克钛酸丁酯搅拌5分钟；
b) PP-R外层配方的制备：将无规共聚聚丙烯100千克，黑色母2千克，搅拌5分钟后静置使用；
c) 改性超高分子量聚乙烯内层配方的制备：
步骤1：纳米钛白粉抗菌母粒的制备：
将颗粒状II型PERT 50千克放置于磨粉机内磨成粉状，然后将磨好的50千克PERT粉料、10千克纳米钛白粉、2千克PE蜡在高混机中搅拌6分钟，将搅拌好的原料倒入造粒机双螺杆造粒，制得纳米钛白粉抗菌母粒。双螺杆挤出机各区温度设置为190-210℃；
步骤2：将步骤1制得的4千克纳米钛白粉抗菌母粒与100千克改性超高分子量聚乙烯放置于搅拌机内搅拌5分钟后静置待用。
d)在三层共挤设备的三个下料斗中分别放置相应的原料，PP-R外层、复配热熔胶中间层和改性超高分子量聚乙烯内层分别在熔融状态下采用共挤一体化成型工艺，制备出复合管，三层共挤挤出时各层挤出工艺参数如表1所示：
表1：三层共挤管材挤出工艺
Figure 399685DEST_PATH_IMAGE001
实施例2
a)复配热熔胶的制备：将7.5千克硅烷交联改性聚乙烯、40千克马来酸酐改性聚乙烯、25千克马来酸酐改性聚丙烯放于搅拌机内搅拌3分钟，然后加入3千克钛酸丁酯搅拌5分钟。
b) PP-R外层配方的制备：将无规共聚聚丙烯100千克，黑色母3千克，搅拌5分钟后静置使用。
c) 改性超高分子量聚乙烯内层配方的制备：
步骤1：纳米钛白粉抗菌母粒的制备：
将颗粒状II型PERT 50千克放置于磨粉机内磨成粉状，然后将磨好的50千克PERT粉料、10千克纳米钛白粉、2千克PE蜡在高混机中搅拌6分钟，将搅拌好的原料倒入造粒机双螺杆造粒，制得纳米钛白粉抗菌母粒。双螺杆挤出机各区温度设置为190-210℃；
步骤2：将步骤1制得的3千克纳米钛白粉抗菌母粒与100千克改性超高分子量聚乙烯放置于搅拌机内搅拌5分钟后静置待用。
d)在三层共挤设备的三个下料斗中分别放置相应的原料，PP-R外层、复配热熔胶中间层和改性超高分子量聚乙烯内层分别在熔融状态下采用共挤一体化成型工艺，制备出复合管，三层共挤挤出时各层挤出工艺参数如表2所示：
表2 三层共挤管材挤出工艺
Figure 214057DEST_PATH_IMAGE002
实施例3
a)复配热熔胶的制备：将4千克硅烷交联改性聚乙烯、40千克马来酸酐改性聚乙烯、30千克马来酸酐改性聚丙烯放于搅拌机内搅拌3分钟，然后加入3.5千克钛酸丁酯搅拌5分钟。
b) PP-R外层配方的制备：将无规共聚聚丙烯100千克，黑色母4千克，搅拌5分钟后静置使用。
c) 改性超高分子量聚乙烯内层配方的制备：
步骤1：纳米钛白粉抗菌母粒的制备：
将颗粒状II型PERT 50千克放置于磨粉机内磨成粉状，然后将磨好的50千克PERT粉料、10千克纳米钛白粉、2千克PE蜡在高混机中搅拌6分钟，将搅拌好的原料倒入造粒机双螺杆造粒，制得纳米钛白粉抗菌母粒。双螺杆挤出机各区温度设置为190-210℃；
步骤2：将步骤1制得的2千克纳米钛白粉抗菌母粒与100千克改性超高分子量聚乙烯放置于搅拌机内搅拌5分钟后静置待用。
d)在三层共挤设备的三个下料斗中分别放置相应的原料，PP-R外层、复配热熔胶中间层和改性超高分子量聚乙烯内层分别在熔融状态下采用共挤一体化成型工艺，制备出复合管，三层共挤挤出时各层挤出工艺参数如表3所示：
表3 三层共挤管材挤出工艺
Figure 98837DEST_PATH_IMAGE003
本发明配方生产的管材与普通热熔胶PPR与超高复合管管材的液压性能对比如表4所示，其他性能参数如表5所示。
表4：抗结垢无规共聚聚丙烯与改性超高分子量聚乙烯复合管液压性能
Figure 365870DEST_PATH_IMAGE004
表5：抗结垢无规共聚聚丙烯与改性超高分子量聚乙烯复合管其它性能指标
Figure 876355DEST_PATH_IMAGE005
，从表4和表5可知，本发明配方生产的管材内外壁光滑，不透光，且其液压性能大大高于普通管材，该产品性能满足PP-R标准GB/T18742的要求，有效解决了PP-R与超高分子量聚乙烯的层与层之间的相容性问题，可用于热水管道系统。同时通过改善外层结构的透光率、内层超高分子量层的水接触角、粗糙度等指标，使管材发挥了良好的抗结垢性，保障了居民饮用水安全。

Claims (6)

1.一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于由内层、中间层及外层分别在熔融状态下采用共挤一体化成型工艺制备得到，所述复合管的内层为改性超高分子量聚乙烯层，中间层为复配热熔胶层，外层为无规共聚聚丙烯层；
所述复配热熔胶层由以下重量百分比的组份组成：3-20%硅烷交联改性聚乙烯、30-60%马来酸酐改性聚乙烯、20-45%马来酸酐改性聚丙烯、2-5%钛酸丁酯；
所述无规共聚聚丙烯层由以下重量份数的组份组成：无规共聚聚丙烯100份，黑色母1-5份；
所述改性超高分子量聚乙烯层由以下重量份数的组份组成：改性超高分子量聚乙烯100份，纳米钛白粉抗菌母粒1-6份；
纳米钛白粉抗菌母粒包括以下重量份数的组份：颗粒状II型PERT 50份 纳米钛白粉8-12份、PE蜡1-3份。
2.根据权利要求1所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于复配热熔胶层由以下重量百分比的组份组成：5-15%硅烷交联改性聚乙烯、40-55%马来酸酐改性聚乙烯、25-40%马来酸酐改性聚丙烯、2-5%钛酸丁酯。
3.根据权利要求1所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于所述无规共聚聚丙烯层由以下重量份数的组份组成：无规共聚聚丙烯100份，黑色母2-4份。
4.根据权利要求1所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于所述改性超高分子量聚乙烯层由以下重量份数的组份组成：改性超高分子量聚乙烯100份，纳米钛白粉抗菌母粒2-4份。
5.根据权利要求1所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于纳米钛白粉抗菌母粒包括以下重量份数的组份：颗粒状II型PERT 50份 纳米钛白粉 8-12份、PE蜡1-3份。
6.根据权利要求1所述的一种抗结垢无规聚丙烯与改性超高分子量聚乙烯复合管，其特征在于纳米钛白粉抗菌母粒包括以下重量份数的组份：颗粒状II型PERT 50份 纳米钛白粉 10份、PE蜡2份。
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