CN103707597B - 超高分子量聚乙烯多层溜槽及其制备方法 - Google Patents
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Abstract
本发明公开了一种超高分子量聚乙烯多层溜槽及其制备方法,包括超高分子量聚乙烯内层,在超高分子量聚乙烯内层外设有改性聚合物层,在改性聚合物层外设有功能聚合物外层;其中改性聚合物层的材料是经过加入了填料改性的聚合物,填料与聚合物的质量比为5:95~40:60。本发明采用多层共挤法制备出的矿用输送管,内外层为超高分子量聚乙烯,其具有超强的耐磨性、自润滑性,强度比较高、化学性质稳定、抗老化性能强等性能;中间层采用填料改性聚合物材料;外层采用聚合物材,使得其具有抗静电、强度高、抗冲击等优异的性能。为此,本发明人通过大量的实验论证得出了此实验方案。通过对超高分子量聚乙烯、填料、聚合物的含量来控制制品的综合性能,通过对工艺条件的优化,得到性能较优的矿用溜槽。
Description
技术领域
本发明涉及高分子科学领域,尤其是一种超高分子量聚乙烯多层溜槽及其制备方法。
背景技术
多层共挤是在多台挤出机上分别挤出不同的熔融料流,在一个复合模头内汇合共挤出得到多层复合制品的加工过程。具有不同性能的物料流在挤出过程中彼此复合在一起,使制品兼有几种不同材料的优良特性。制品在性质上能够进行互补,从而获得具有特别性能和外观的材料,如防氧和防湿的阻隔能力、着色性、保温性、热成型和热粘合能力,以及强度、刚度、硬度等机械性能。这些具有综合性能的多层复合材料在许多领域中有极其广泛的应用价值。因此,共挤出技术被广泛用于复合薄膜、板材、管材和电线电缆的生产。
超高分子量聚乙烯是一种高分子材料,其具有极高的耐磨性、自润滑性、化学性质较稳定,强度比较高、耐低温、抗老化等特点。超高分子量聚乙烯具有极高的抗冲击性,采用多层共挤制备矿用输送管,能有效防止内外层蠕变,增加了其对抗冲击、压力、弯曲的能力,增加了其承受能力。采用超高分子量聚乙烯材料制备矿用输送管不怕磕碰,不会破裂,特别适用于一些环境恶劣的矿井输送设备。
中国专利公开号CN1217971,于1999年6月2日公开了“高分子聚乙烯矿用溜槽及其制作工艺方法”。该方法是采用超高分子量聚乙烯取代钢材,热压成型,采用联板顺插锁扣制取代燕尾板顺插法。产品具有自润滑性,抗静电、耐冲击耐磨损耐化学腐蚀,在低温的情况下具有较好的抗折断和扭曲能力。但是采用超高分子量聚乙烯作为单层材料,产品的成本较高。这两件专利采用聚乙烯或超分子量聚乙烯作为主要原料,采用超高分子量聚乙烯作为单一原料生产过程成本高,不经济,采用聚乙烯作为溜槽材料,产品耐摩擦性能差。
发明内容
本发明的目的是:提供一种超高分子量聚乙烯多层溜槽及其制备方法,它克服矿用溜槽由于矿物和煤矸石撞击和摩擦,导致溜槽易受损害等缺点。
本发明是这样实现的:超高分子量聚乙烯多层溜槽,包括超高分子量聚乙烯内层,在超高分子量聚乙烯内层外设有改性聚合物层,在改性聚合物层外设有功能聚合物外层;超高分子量聚乙烯内层、改性聚合物层及功能聚合物外层组成的形状是底部水平,两侧向上翘起的结构,或组成一个圆弧形结构;其中改性聚合物层的材料是经过加入了填料改性的聚合物,填料与聚合物的质量比为5:95~40:60。
所述的改性聚合物层中的聚合物与功能聚合物外层的聚合物为UHMWPE、HDPE、LLDPE、LDPE、PP、PVC、PA其中一种或几种的任意组合;改性聚合物层中的填料为粘合剂、石墨、碳纤维、碳酸钙、硫酸钙、抗静电剂或阻燃剂其中一种或几种的任意组合。
超高分子量聚乙烯内层的厚度为0.1~5mm,改性聚合物层的厚度为5~50mm,功能聚合物外层的厚度为5~20mm。
超高分子量聚乙烯多层溜槽的制备方法,将超高分子量聚乙烯、改性聚合物以及功能聚合物采用多层共挤的加工方式,生产获得超高分子量聚乙烯多层溜槽。
超高分子量聚乙烯内层挤出机挤出参数为:挤出各段温度为:一区200℃、二区220℃、三区230℃、四区240℃、五区250℃、六区250℃;主机转速为300r/min。
由于采用了上述的技术方案,本发明采用多层共挤法制备出的矿用溜槽,内外层为超高分子量聚乙烯,超高分子量聚乙烯是一种高分子聚合物,其具有超强的耐磨性、自润滑性,强度比较高、化学性质稳定、抗老化性能强等性能。在矿物运输的过程中能够降低矿物对溜槽的摩擦损害作用;中间层采用填料改性聚合物材料;外层采用聚合物材,使得其具有抗静电、强度高、抗冲击等优异的性能。为此,其价格较采用单一挤出机相比,其成本大幅降低,且制品的性能得到改善。本发明人通过大量的实验论证得出了此实验方案,设计出两种形状不同的矿用溜槽。通过对超高分子量聚乙烯、填料、聚合物的含量来控制制品的综合性能,通过对工艺条件的优化,得到性能较优的矿用溜槽。本发明的制备方法较简易,综合性能较好,具有一定的市场竞争力。
附图说明
附图1为本发明的实施例1的结构示意图;
附图2为本发明的实施例2的结构示意图。
具体实施方式
本发明的实施例1:超高分子量聚乙烯多层溜槽如图1所示,包括超高分子量聚乙烯内层1,在超高分子量聚乙烯内层1外设有改性聚合物层2,在改性聚合物层2外设有功能聚合物外层3;超高分子量聚乙烯内层1的厚度为0.1mm,改性聚合物层2的厚度为5mm,功能聚合物外层3的厚度为5mm;超高分子量聚乙烯内层1、改性聚合物层2及功能聚合物外层3组成的形状是底部水平,两侧向上翘起的结构;其中改性聚合物层2的材料是经过加入了填料改性的聚合物,填料与聚合物的质量比为5:95;所述的改性聚合物层2中的聚合物与功能聚合物外层3的聚合物为PVC;改性聚合物层2中的填料为碳纤维。
超高分子量聚乙烯多层共挤矿用输送管的制备方法,将超高分子量聚乙烯、改性聚合物以及功能聚合物采用多层共挤的加工方式,生产获得超高分子量聚乙烯多层溜槽;超高分子量聚乙烯内层1挤出机挤出参数为:挤出各段温度为:一区200℃、二区220℃、三区230℃、四区240℃、五区250℃、六区250℃;主机转速为300r/min。
本发明的实施例2:超高分子量聚乙烯多层溜槽如图2所示,包括超高分子量聚乙烯内层1,在超高分子量聚乙烯内层1外设有改性聚合物层2,在改性聚合物层2外设有功能聚合物外层3;超高分子量聚乙烯内层1的厚度为5mm,改性聚合物层2的厚度为50mm,功能聚合物外层3的厚度为20mm;超高分子量聚乙烯内层1、改性聚合物层2及功能聚合物外层3组成的圆弧形结构;其中改性聚合物层2的材料是经过加入了填料改性的聚合物,填料与聚合物的质量比为40:60;所述的改性聚合物层2中的聚合物与功能聚合物外层3的聚合物为PA;改性聚合物层2中的填料为石墨。
制备方法同实施例1。
Claims (4)
1.一种超高分子量聚乙烯多层溜槽,包括超高分子量聚乙烯内层(1),其特征在于:在超高分子量聚乙烯内层(1)外设有改性聚合物层(2),在改性聚合物层(2)外设有功能聚合物外层(3);超高分子量聚乙烯内层(1)、改性聚合物层(2)及功能聚合物外层(3)组成的形状是底部水平,两侧向上翘起的结构,或组成一个圆弧形结构;其中改性聚合物层(2)的材料是经过加入了填料改性的聚合物,所述的填料为碳纤维,聚合物为PVC,填料与聚合物的质量比为5:95;或所述的填料为石墨,聚合物为PA,填料与聚合物的质量比为40:60。
2.根据权利要求1所述的超高分子量聚乙烯多层溜槽,其特征在于:超高分子量聚乙烯内层(1)的厚度为0.1~5mm,改性聚合物层(2)的厚度为5~50mm,功能聚合物外层(3)的厚度为5~20mm。
3.一种如权利要求1所述的超高分子量聚乙烯多层溜槽的制备方法,其特征在于:将超高分子量聚乙烯、改性聚合物以及功能聚合物采用多层共挤的加工方式,生产获得超高分子量聚乙烯多层溜槽。
4.根据权利要求3所述的超高分子量聚乙烯多层溜槽的制备方法,其特征在于:超高分子量聚乙烯内层(1)挤出机挤出参数为:挤出各段温度为:一区200℃、二区220℃、三区230℃、四区240℃、五区250℃、六区250℃;主机转速为300r/min。
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CN101797821A (zh) * | 2010-01-26 | 2010-08-11 | 天津军星管业集团有限公司 | 多组分多层共挤改性高模量塑料复合管材 |
CN202091649U (zh) * | 2010-11-27 | 2011-12-28 | 泰州申视塑料有限公司 | 一种高承压超高分子量聚乙烯增强复合管材结构 |
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