CN116691077A - 一种高耐温高耐磨管材及其制备方法 - Google Patents
一种高耐温高耐磨管材及其制备方法 Download PDFInfo
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Abstract
本发明属于管道材料技术领域,涉及一种高耐温高耐磨管材及其制备方法。所述高耐温高耐磨管材由内层的POK内管和外层的PE外管组成的双层材质的复合管,其中,内层的POK内管是将POK树脂、增韧剂、ABS降温剂、抗氧剂及润滑剂在200‑240℃的温度区间内熔融共混后的POK物料经挤出定型模具得到的作为内层的POK管道;外层的PE外管是将PE树脂、抗氧剂及润滑剂在170‑210℃的温度区间内熔融共混后的PE物料经挤出定型模具得到的作为外层的PE管道;其中外层的PE管道将内层的POK管道紧紧包裹,内层的POK内管和外层的PE外管紧密贴合。与现有技术相比,本发明同时具备优异耐高温耐磨性能、抗老化及高抗冲性能,并且具有低生产成本的优势。
Description
技术领域
本发明属于管道材料技术领域,尤其是涉及一种高耐温高耐磨管材及其制备方法。
背景技术
POK是由空气中的一氧化碳烯烃(乙烯、丙烯)共聚得到的一款高结晶的高分子聚合物,具有高强度、高耐温、高耐磨及耐中酸中碱等特性。POK材料,密度1.1-1.3g/cm3,维卡软化温度200℃(B50法),在耐温性能上具备极佳的性能表现,在石油化工行业广泛应用,此外还具有高耐磨、高强度以及良好的耐腐蚀性,但,POK原料售价较高,这也极大的限制了POK的应用。
超高分子量聚乙烯(UHMW-PE)是一种线型结构的具有优异综合性能的热塑性工程塑料,具有耐磨、抗冲击、抗老化以及使用寿命长等优点,目前在纤维、绳索、头盔以及石油开采行业有着大量应用。由于超高分子量聚乙烯维卡软化温度只有约120℃,目前在石油开采行业的油管应用中最深只可用于地下3000米的油气开采。与此同时,相较于POK材料,超高分子量聚乙烯售价只有POK的额一半。
所以,现有技术中缺少同时具备优异耐高温耐磨性能、抗老化及高抗冲性能,并且具有低生产成本的材料。
发明内容
本发明的目的就是为了克服上述现有技术存在的缺陷而提供一种高耐温高耐磨管材及其制备方法。
本发明的目的可以通过以下技术方案来实现:
本发明首先提供一种高耐温高耐磨管材,所述高耐温高耐磨管材由内层的POK内管和外层的PE外管组成的双层材质的复合管,
其中,内层的POK内管是将POK树脂、增韧剂、ABS降温剂、抗氧剂及润滑剂在200-240℃的温度区间内熔融共混后的POK物料经挤出定型模具得到的作为内层的POK管道;
外层的PE外管是将PE树脂、抗氧剂及润滑剂在170-210℃的温度区间内熔融共混后的PE物料经挤出定型模具得到的作为外层的PE管道;
其中外层的PE管道将内层的POK管道紧紧包裹,内层的POK内管和外层的PE外管紧密贴合。
在本发明的一个实施方式中,内层的POK内管所用的材料以重量份数计,主要包含:
POK树脂:60-97份;
ABS降温剂:5-10份;
POK增韧剂:10~20份
抗氧剂:0-1.2份
润滑剂:0-2份。
在本发明的一个实施方式中,所述POK树脂为数均分子量区间在40000-120000之间,240℃/2.16kg条件下熔融指数为3-8g/10min中的一种或多种POK树脂组合,优选地,选用的POK树脂为数均分子量60000、熔融指数3g/10min。
在本发明的一个实施方式中,所述ABS降温剂选自高聚酯聚合物、高结晶过氧化物、高分子引发剂、苯乙烯-丙烯腈共聚物或乙撑双硬脂酰胺中的一种或多种的组合,优选地,选用的低粘度苯乙烯-丙烯腈共聚物。
在本发明的一个实施方式中,所述POK增韧剂选自甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物、马来酸酐接枝乙烯-醋酸乙烯共聚物或马来酸酐接枝聚碳酸酯中的一种或多种。
在本发明的一个实施方式中,外层的PE外管所用的材料以重量份数计,主要包含:
PE树脂:60-97份;
PE增韧剂:10~15份
抗氧剂:0-1.2份
润滑剂:0-2份。
在本发明的一个实施方式中,所述PE树脂选自超高分子量聚乙烯、高密度聚乙烯、中密度聚乙烯、低密度聚乙烯或线性低密度聚乙烯中的一种或多种的组合,优选地,选用采购分子量聚乙烯。
在本发明的一个实施方式中,所述PE增韧剂选自SBS,SEBS,TPE或POE中的一种或多种的组合,优选地,选用的增韧剂为POE。
在本发明的一个实施方式中,所述抗氧剂选自抗氧剂2450、抗氧剂1076、抗氧剂1010及抗氧剂168中的一种或几种的组合,优选地,所选用抗氧剂为抗氧剂1010及抗氧剂168。
在本发明的一个实施方式中,所述润滑剂选自硬脂酸锌、硬脂酸钙、硬脂酸丁酯、油酰胺、季戊四醇硬脂酸酯或乙撑双硬脂酸酰胺中的至少一种或多种的组合。
本发明还进一步提供所述高耐温高耐磨管材的制备方法,包括以下步骤:
将POK树脂、增韧剂、ABS降温剂、抗氧剂及润滑剂在200-240℃的温度区间内熔融共混,得到能够稳定挤出的POK物料;
将PE树脂、抗氧剂及润滑剂在170-210℃的温度区间内熔融共混,得到能够稳定挤出的PE物料;
POK物料和PE物料同时稳定挤出后,分别经过挤出定型模具复合,POK物料挤出形成POK内管,PE物料挤出形成PE外管,POK内管和PE外管紧密贴合共同挤出,形成双层材质的复合管。
由于POK挤出时收缩率要小于PE,因此,作为外层的PE管道可以将内层的POK管道紧紧包裹,完成紧密贴合。
在本发明的一个实施方式中,制备得到POK内管时,混合物熔融所选用的加工设备选自密炼机、单螺杆挤出机、双螺杆挤出机或开炼机,优选地,选用单螺杆挤出机,单螺杆挤出机加工温度区间为200-240℃,主机转速200-600rpm。
在本发明的一个实施方式中,制备得到PE外管时,混合物熔融所选用的加工设备选自密炼机、单螺杆挤出机、双螺杆挤出机或开炼机,优选地,选用单螺杆挤出机,单螺杆挤出机加工温度区间为170-210℃,主机转速200-600rpm。
本发明中,POK内管和PE外管分别同时挤出,并经过挤出定型模具复合,POK内管和PE外管紧密贴合共同挤出,形成双层材质的复合管。
在本发明的一个实施方式中,所述挤出定型模具包括模芯与口模,模芯内形成有用于挤出成型POK内管的POK物料通道,口模内形成有用于挤出成型PE外管的PE物料通道,所述PE物料通道位于POK物料通道的外侧,且由PE物料通道挤出成型的PE外管能够将由POK物料通道挤出成型的POK内管紧紧包裹,完成紧密贴合。
在本发明的一个实施方式中,所述挤出定型模具的口模配有耐高温聚四氟乙烯环状口模,可以降低外层材料光洁度。
在本发明的一个实施方式中,所述POK物料通道与PE物料通道的尺寸可调,以满足内层外层材料的厚度可根据实际情况调整;
在本发明的一个实施方式中,所述模芯上有四氟乙烯材质涂层,保证内层POK材料可以顺畅挤出,降低POK材料在挤出设备中的停留时间,减少焦料产生,抑制POK材料过加工而碳化。
在本发明的一个实施方式中,复合管材经挤出定型模具挤出后,经由真空喷淋水箱冷却定型,同时利用外层PE的挤出收缩率>POK的挤出收缩率的收缩差,进而实现两种材质的紧密贴合,实现内外层不同材料的负荷而挤出。
本发明是以聚酮(POK)为主要原料配以一部分其他功能性组分和以聚乙烯树脂为基础树脂配以一部分其他功能性组分分别同时挤出,并通过挤出定型模具制成内层为聚酮材质外层为聚乙烯材质的特种耐高温耐磨管材。内层的聚酮(POK)材料本身具备的高耐温、高耐磨及耐腐蚀等特性,可以满足高温或者高温腐蚀介质的输送要求,同时外层的聚乙烯(PE)材质具备极佳的耐老化及抗低温冲击性能,可以保证内输送介质的户外工况要求。
本发明高耐温高耐磨管材的制备主要原理为:在POK管材外层复合一层PE管道,使制得的管材内层具备极佳的耐温和耐磨性能,同时外层具备极佳的抗冲击和抗老化性能,同时,PE材质市售价格只有POK的一半,PE材质的引入,是实现了POK材质低成本应用,也实现了PE材质在在井下3000米以下深井的应用,对深井油气开采管道的成本下降及POK材质的广泛应用具有极大的意义。
本发明的高耐温高耐磨管材作为高温强腐蚀工况下的特种行业管材的替代产品,以油气开采及输送管道目前用量最大的几种材质管道为对照,具备以下优点:
相比超高分子量聚乙烯管材,可将管材的耐温性由70℃提升至185℃,且抗压强度提升3倍,抗拉强度提升2倍;相较尼龙管材具有更好的耐水解、耐化学腐蚀、耐燃油、及耐高温性,更平衡的刚性和韧性;较钢管具备更轻量化、有更高的介质阻隔性以及更低的成本等优点。
同时,本发明产品的生产过程不涉及过多过复杂及过精密仪器,经过挤出定型模具及材料特性实现POK材质和PE材质的复合挤出,定型后生产出具备优异性能的复合管。该技术具备放大性和极佳的推广性,对今后技术的产出为产品解决石油行业面临的问题具有极强的现实意义。
附图说明
图1为挤出定型模具的结构示意图。
具体实施方式
下面结合附图和具体实施例对本发明进行详细说明。
以下实施例和对比例中未特殊注明的细节,则按照厂家一般指导进行操作。
本发明实施例中所用的POK树脂为韩国晓星生产的POK-M630A,
本发明实施例中所用的PE树脂为PE-UHMW,燕山石化,
本发明实施例中所用的POK降温剂为苯乙烯-丙烯腈共聚物(SAN),具体牌号为奇美PN-127H,
本发明实施例中所用的POK增韧剂为甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物(MBS),具体牌号为陶氏EXL-2620。
本发明实施例中所用的PE增韧剂为POE-7467陶氏。
本发明实施例中所用的抗氧剂为抗氧剂1010及抗氧剂168联合使用。
本发明实施例中的内层POK管材和外层PE管材的制备方法主要为共混、熔融、挤出、复合及真空定型等几个环节,POK管材和PE管材的挤出均采用单螺杆挤出。
POK管材加工的单螺杆挤出机加工温度区间为200-240℃,具体温度设定如表1所示:
表1内层POK管材加工温度
PE管材加工的单螺杆挤出机加工温度区间为170-210℃,具体温度设定如表2所示:
表2外层PE管材加工温度
以下实施例中,挤出定型模具如图1所示,包括模芯1与口模2,模芯1内形成有用于挤出成型POK内管的POK物料通道3,口模2内形成有用于挤出成型PE外管的PE物料通道4,所述PE物料通道4位于POK物料通道3的外侧,且由PE物料通道4挤出成型的PE外管能够将由POK物料通道3挤出成型的POK内管紧紧包裹,完成紧密贴合。
所述挤出定型模具的口模2配有耐高温聚四氟乙烯环状口模5,可以降低外层材料光洁度。所述POK物料通道3与PE物料通道4的尺寸可调,以满足内层外层材料的厚度可根据实际情况调整;所述模芯1上有四氟乙烯材质涂层,保证内层POK材料可以顺畅挤出,降低POK材料在挤出设备中的停留时间,减少焦料产生,抑制POK材料过加工而碳化。
复合管材经挤出定型模具挤出后,经由真空喷淋水箱冷却定型,同时利用外层PE的挤出收缩率>POK的挤出收缩率的收缩差,进而实现两种材质的紧密贴合,实现内外层不同材料的负荷而挤出。
在本发明实施例中,所制得的管材规格为27/8规格内衬油管,具体尺寸为外径壁厚3.5mm,对复合管材进行静液压、落锤冲击(-20℃)、维卡软化温度及拉伸强度测试。
实施例1
将POK树脂、苯乙烯-丙烯腈共聚物(SAN)、甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物(MBS)分别在70℃真空烘箱中干燥24小时后,将上述三种材料与抗氧剂1010及抗氧剂168以及硬脂酸丁酯按照POK:SAN:MBS:抗氧剂1010-168:硬脂酸丁酯质量比=100:5:10:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行POK物料挤出。
将PE树脂、POE、抗氧剂1010及抗氧剂168以及硬脂酸按照PE:POE:抗氧剂1010-168:硬脂酸质量比=100:5:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行PE物料挤出。
待内层POK物料和外层PE物料逐步挤出稳定后,从挤出定型模具中挤出的复合管材料可以明显看出POK(淡黄色)和PE(白色)各无掺杂且紧密贴合。POK物料挤出机转速控制在396rpm,PE物料挤出机转速控制在215rpm,将物料牵引只真空定型箱,进行复合管道的定型。真空定型箱采用喷淋冷却,真空压力为-0.6MPa。
实施例2
将POK树脂、苯乙烯-丙烯腈共聚物(SAN)、甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物(MBS)分别在70℃真空烘箱中干燥24小时后,将上述三种材料与抗氧剂1010及抗氧剂168以及硬脂酸丁酯按照POK:SAN:MBS:抗氧剂1010-168:硬脂酸丁酯质量比=100:5:10:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行POK物料挤出。
将PE树脂、POE、抗氧剂1010及抗氧剂168以及硬脂酸按照PE:POE:抗氧剂1010-168:硬脂酸质量比=100:5:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行PE物料挤出。
待内层POK物料和外层PE物料逐步挤出稳定后,从挤出定型模具中挤出的复合管材料可以明显看出POK(淡黄色)和PE(白色)各无掺杂且紧密贴合。POK物料挤出机转速控制在510rpm,PE物料挤出机转速控制在103rpm,将物料牵引只真空定型箱,进行复合管道的定型。真空定型箱采用喷淋冷却,真空压力为-0.6MPa。
实施例3
将POK树脂、苯乙烯-丙烯腈共聚物(SAN)、甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物(MBS)分别在70℃真空烘箱中干燥24小时后,将上述三种材料与抗氧剂1010及抗氧剂168以及硬脂酸丁酯按照POK:SAN:MBS:抗氧剂1010-168:硬脂酸丁酯质量比=100:5:8:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行POK物料挤出。
将PE树脂、POE、抗氧剂1010及抗氧剂168以及硬脂酸按照PE:POE:抗氧剂1010-168:硬脂酸质量比=100:5:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行PE物料挤出。
待内层POK物料和外层PE物料逐步挤出稳定后,从挤出定型模具中挤出的复合管材料可以明显看出POK(淡黄色)和PE(白色)各无掺杂且紧密贴合。POK物料挤出机转速控制在396rpm,PE物料挤出机转速控制在215rpm,将物料牵引只真空定型箱,进行复合管道的定型。真空定型箱采用喷淋冷却,真空压力为-0.6MPa。
实施例4
将POK树脂、苯乙烯-丙烯腈共聚物(SAN)、甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物(MBS)分别在70℃真空烘箱中干燥24小时后,将上述三种材料与抗氧剂1010及抗氧剂168以及硬脂酸丁酯按照POK:SAN:MBS:抗氧剂1010-168:硬脂酸丁酯质量比=100:7:10:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行POK物料挤出。
将PE树脂、POE、抗氧剂1010及抗氧剂168以及硬脂酸按照PE:POE:抗氧剂1010-168:硬脂酸质量比=100:5:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行PE物料挤出。
待内层POK物料和外层PE物料逐步挤出稳定后,从挤出定型模具中挤出的复合管材料可以明显看出POK(淡黄色)和PE(白色)各无掺杂且紧密贴合。POK物料挤出机转速控制在510rpm,PE物料挤出机转速控制在103rpm,将物料牵引只真空定型箱,进行复合管道的定型。真空定型箱采用喷淋冷却,真空压力为-0.6MPa。
对比例1
将POK树脂、苯乙烯-丙烯腈共聚物(SAN)、甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物(MBS)分别在70℃真空烘箱中干燥24小时后,将上述三种材料与抗氧剂1010及抗氧剂168以及硬脂酸丁酯按照POK:SAN:MBS:抗氧剂1010-168:硬脂酸丁酯质量比=100:5:10:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行POK物料挤出。
将PE树脂、POE、抗氧剂1010及抗氧剂168以及硬脂酸按照PE:POE:抗氧剂1010-168:硬脂酸质量比=100:5:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行PE物料挤出。
待内层POK物料和外层PE物料逐步挤出稳定后,从挤出定型模具中挤出的复合管材料可以明显看出POK(淡黄色)和PE(白色)各无掺杂且紧密贴合。POK物料挤出机转速控制在597rpm,PE物料挤出机转速控制在0rpm,将物料牵引只真空定型箱,进行复合管道的定型。真空定型箱采用喷淋冷却,真空压力为-0.6MPa。
对比例2
将POK树脂、苯乙烯-丙烯腈共聚物(SAN)、甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物(MBS)分别在70℃真空烘箱中干燥24小时后,将上述三种材料与抗氧剂1010及抗氧剂168以及硬脂酸丁酯按照POK:SAN:MBS:抗氧剂1010-168:硬脂酸丁酯质量比=100:5:0:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行POK物料挤出。
将PE树脂、POE、抗氧剂1010及抗氧剂168以及硬脂酸按照PE:POE:抗氧剂1010-168:硬脂酸质量比=100:5:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行PE物料挤出。
待内层POK物料和外层PE物料逐步挤出稳定后,从挤出定型模具中挤出的复合管材料可以明显看出POK(淡黄色)和PE(白色)各无掺杂且紧密贴合。POK物料挤出机转速控制在510rpm,PE物料挤出机转速控制在103rpm,将物料牵引只真空定型箱,进行复合管道的定型。真空定型箱采用喷淋冷却,真空压力为-0.6MPa。
对比例3
将POK树脂、苯乙烯-丙烯腈共聚物(SAN)、甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物(MBS)分别在70℃真空烘箱中干燥24小时后,将上述三种材料与抗氧剂1010及抗氧剂168以及硬脂酸丁酯按照POK:SAN:MBS:抗氧剂1010-168:硬脂酸丁酯质量比=100:0:10:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行POK物料挤出。
将PE树脂、POE、抗氧剂1010及抗氧剂168以及硬脂酸按照PE:POE:抗氧剂1010-168:硬脂酸质量比=100:5:0.6:0.2的比例,在混料锅中常温混合20min,混合均匀后加入单螺杆挤出机,逐步提升单螺杆转速,开始进行PE物料挤出。
待内层POK物料和外层PE物料逐步挤出稳定后,从挤出定型模具中挤出的复合管材料可以明显看出POK(淡黄色)和PE(白色)各无掺杂且紧密贴合。POK物料挤出机转速控制在396rpm,PE物料挤出机转速控制在215rpm,将物料牵引只真空定型箱,进行复合管道的定型。真空定型箱采用喷淋冷却,真空压力为-0.6MPa。
实施例与对比例所得管材的性能如表3所述。
表3实施例与对比例所得管材性能表
由表3所示的合金性能可知,
①实施例1-4及对比例1表明,外层PE管材可有效保护内层的POK管材,保证复合管材在-20℃下的抗冲击性能
②实施例1-4及对比例2表明,当外层PE管材壁厚较薄时,内层POK材料中添加的MBS增韧剂可有效提升内层POK管材的抗冲击性能。
③实施例1-4及对比例3表明,内层POK材料中添加的SAN降温剂可有效保证POK的稳定挤出,减少POK材料因螺杆摩擦产生焦料进入管材内,避免管材上薄弱点出现。
④所有实施例及对比例均说明,在POK中添加SAN降温剂及增韧剂MBS均会降低内层POK材料的维卡软化温度及拉伸强度,且随着添加量的上升,下降幅度逐步加大。
⑤实施例2产品的各项性能均较为优异,维卡软化温度达到167.5℃,可用于井下5000米左右的油气开采工作。
上述的对实施例的描述是为便于该技术领域的普通技术人员能理解和使用发明。熟悉本领域技术的人员显然可以容易地对这些实施例做出各种修改,并把在此说明的一般原理应用到其他实施例中而不必经过创造性的劳动。因此,本发明不限于上述实施例,本领域技术人员根据本发明的揭示,不脱离本发明范畴所做出的改进和修改都应该在本发明的保护范围之内。
Claims (10)
1.一种高耐温高耐磨管材,其特征在于,所述高耐温高耐磨管材由内层的POK内管和外层的PE外管组成的双层材质的复合管,
其中,内层的POK内管是将POK树脂、增韧剂、ABS降温剂、抗氧剂及润滑剂在200-240℃的温度区间内熔融共混后的POK物料经挤出定型模具得到的作为内层的POK管道;
外层的PE外管是将PE树脂、抗氧剂及润滑剂在170-210℃的温度区间内熔融共混后的PE物料经挤出定型模具得到的作为外层的PE管道;
其中外层的PE管道将内层的POK管道紧紧包裹,内层的POK内管和外层的PE外管紧密贴合。
2.根据权利要求1所述的一种高耐温高耐磨管材,其特征在于,内层的POK内管所用的材料以重量份数计,主要包含:
POK树脂:60-97份;
ABS降温剂:5-10份;
POK增韧剂:10~20份
抗氧剂:0-1.2份
润滑剂:0-2份。
3.根据权利要求2所述的一种高耐温高耐磨管材,其特征在于,所述POK树脂为数均分子量区间在40000-120000之间,240℃/2.16kg条件下熔融指数为3-8g/10min中的一种或多种POK树脂组合;
所述ABS降温剂选自高聚酯聚合物、高结晶过氧化物、高分子引发剂、苯乙烯-丙烯腈共聚物或乙撑双硬脂酰胺中的一种或多种的组合;
所述POK增韧剂选自甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物、马来酸酐接枝乙烯-醋酸乙烯共聚物或马来酸酐接枝聚碳酸酯中的一种或多种。
4.根据权利要求1所述的一种高耐温高耐磨管材,其特征在于,外层的PE外管所用的材料以重量份数计,主要包含:
PE树脂:60-97份;
PE增韧剂:10~15份
抗氧剂:0-1.2份
润滑剂:0-2份。
5.根据权利要求4所述的一种高耐温高耐磨管材,其特征在于,所述PE树脂选自超高分子量聚乙烯、高密度聚乙烯、中密度聚乙烯、低密度聚乙烯或线性低密度聚乙烯中的一种或多种的组合;
所述PE增韧剂选自SBS,SEBS,TPE或POE中的一种或多种的组合。
6.根据权利要求2或4所述的一种高耐温高耐磨管材,其特征在于,所述抗氧剂选自抗氧剂2450、抗氧剂1076、抗氧剂1010及抗氧剂168中的一种或几种的组合;
所述润滑剂选自硬脂酸锌、硬脂酸钙、硬脂酸丁酯、油酰胺、季戊四醇硬脂酸酯或乙撑双硬脂酸酰胺中的至少一种或多种的组合。
7.权利要求1所述高耐温高耐磨管材的制备方法,其特征在于,包括以下步骤:
将POK树脂、增韧剂、ABS降温剂、抗氧剂及润滑剂在200-240℃的温度区间内熔融共混,得到能够稳定挤出的POK物料;
将PE树脂、抗氧剂及润滑剂在170-210℃的温度区间内熔融共混,得到能够稳定挤出的PE物料;
POK物料和PE物料同时稳定挤出后,分别经过挤出定型模具复合,POK物料挤出形成POK内管,PE物料挤出形成PE外管,POK内管和PE外管紧密贴合共同挤出,形成双层材质的复合管。
8.根据权利要求7所述的一种高耐温高耐磨管材的制备方法,其特征在于,制备得到POK内管时,混合物熔融所选用的加工设备选自密炼机、单螺杆挤出机、双螺杆挤出机或开炼机,当选用单螺杆挤出机时,单螺杆挤出机加工温度区间为200-240℃,主机转速200-600rpm;
制备得到PE外管时,混合物熔融所选用的加工设备选自密炼机、单螺杆挤出机、双螺杆挤出机或开炼机,当选用单螺杆挤出机,单螺杆挤出机加工温度区间为170-210℃,主机转速200-600rpm。
9.根据权利要求7所述的一种高耐温高耐磨管材的制备方法,其特征在于,所述挤出定型模具包括模芯(1)与口模(2),模芯(1)内形成有用于挤出成型POK内管的POK物料通道(3),口模(2)内形成有用于挤出成型PE外管的PE物料通道(4),所述PE物料通道(4)位于POK物料通道(3)的外侧,且由PE物料通道(4)挤出成型的PE外管能够将由POK物料通道(3)挤出成型的POK内管紧紧包裹,完成紧密贴合。
10.根据权利要求9所述的一种高耐温高耐磨管材的制备方法,其特征在于,所述挤出定型模具的口模(2)配有耐高温聚四氟乙烯环状口模(5),用以降低外层材料光洁度;
所述模芯(1)上有四氟乙烯材质涂层,保证内层POK材料能够顺畅挤出,降低POK材料在挤出设备中的停留时间,减少焦料产生,抑制POK材料过加工而碳化。
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