CN112625381B - 一种耐磨泥浆泵挡酸板的制备方法 - Google Patents
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Abstract
本发明属于高分子材料技术领域,尤其是一种耐磨泥浆泵挡酸板的制备方法,本发明公开的制备方法采用由聚全氟代丙烯与辉绿岩粉、改性聚芳酯、石墨化炭黑、地聚合物、碳纤维等制成,耐气候、高绝缘、高润滑、不粘附,耐磨性能好,具有防腐蚀功能,能够运输含有腐蚀性的介质如强酸、强碱等,对于高粘稠的介质一样可以通过砂浆泵进行运输,不粘附泥浆等物质,适合于耐磨泥浆泵的使用。
Description
技术领域
本发明属于高分子材料技术领域,尤其是一种耐磨泥浆泵挡酸板的制备方法。
背景技术
目前,泥浆泵存在着密封困难、易磨损、压力低、造价高等问题,例如某些情况下难以承担起切割地层和输送浆液两项任务,泥浆泵在抗磨损和降低造价方面还有待提高,对泥浆泵要求的最重要事项,是要有对固体颗粒的耐磨性,在材料的选择上,还要求泥浆泵挡酸板具有一定的耐腐蚀性尤其耐酸性,对于有腐蚀性的泥浆,从启动到正常运转这段期间几乎没有液体泄漏,但当推入压力过大、泵快停止运转时,往往有少量掖体漏出,因此,必须要设置挡酸板,而且其要求具有一定的润滑性要从外部注入泥浆而产生磨损。而现有的挡酸板耐磨性能差且使用寿命短,极大的影响泥浆泵的使用寿命,本领域技术人员亟待开发一种耐磨泥浆泵挡酸板的制备方法。
发明内容
针对上述问题,本发明旨在提供一种耐磨泥浆泵挡酸板的制备方法。
本发明通过以下技术方案实现:
一种耐磨泥浆泵挡酸板的制备方法,包括以下步骤:(1)按重量份数计,称量以下原料:辉绿岩粉15~20份、改性聚芳酯10~20份、石墨化炭黑4~5份、地聚合物10~15份、碳纤维10~13份、碳化硅短纤1~3份、硫酸钡晶须0.5~1份、偶联剂0.5~1份、防老化剂0.5~1份,得混合料;(2)将聚全氟代丙烯粉末均匀0.0002~0.0004g/cm2地厚度铺展在玻璃皿内,置于等离子体处理仪中,抽真空,在所需功率200~250W、15~20Pa下放电3~5min,得到经表面处理的聚全氟代丙烯;(3)聚苯硫醚酰胺6~8份、经表面处理的聚全氟代丙烯30~40份,与步骤(1)得到的混合料,在高速混合机中于室温下混合均匀后,在双螺杆挤出机上于温度270~310℃100~150rpm剪切速率下100~150rpm剪切速率下挤出板材,制得耐磨泥浆泵挡酸板。
进一步的,所述地聚合物为将在900℃下煅烧时间1~2h而得的偏高岭土、钠水玻璃、氢氧化钠与合成硅铝填料,按偏高岭土∶硅酸钠∶氢氧化钠∶合成硅铝填料=45~50∶50~54∶3~4∶3~5,高岭土的煅烧温度为900℃,称量、混合、搅拌均匀,并于25~30℃相对湿度50~60%条件下养护54~60h后破碎至800~1000目,然后50℃烘干至恒重,得到地聚合物。
进一步的,所述改性聚芳酯为接枝改性聚芳酯,具体工艺方法为:纳米二氧化硅在110℃真空干燥4~6h后,加入纳米二氧化硅的质量2~3%的3-氨基丙基三乙氧基硅烷搅拌1~2h得硅烷改性二氧化硅,再将端羧基聚芳酯树脂在氮气保护下溶解在四氢呋喃中形成质量分数的溶液,加入4-二甲氨基吡啶24~25份,硅烷改性二氧化硅120~150份及二环己基碳二亚胺70~80份于25~30℃下搅拌12~14h在90~100℃下真空干燥6h后,按质量比10~15%的添加量加入工业用聚芳酯加热至熔融混炼塑化均匀5~10min后冷却,即得。
进一步的,所述石墨化炭黑为粒径100~200μm,BET比表面积100~125m2/g,950℃下挥发份1~1.5%的石墨化炭黑微粒。
进一步的,所述偶联剂为乳酸钠锆、2-甲基丙烯酸氯化铬中的一种或多种。
进一步的,所述防老化剂为N-环己基对乙氧基苯胺和N-(4-苯氨基苯基)-甲基丙烯酰胺的质量1∶1的混合物。
本发明的有益效果:
聚全氟代丙烯分子中按锯齿形状排列,由于氟原子半径较碳稍大,形成一个螺旋状的扭曲链,氟原子几乎覆盖了整个高分子链的表面,聚苯硫醚酰胺与其共混提高材料的强度。引入的地聚合物,其被认为是新型的高性能无机聚合物,是碱激活胶凝材料中最具前途的一类,地聚合物优良的耐酸性、耐侵蚀性能,功能化改性二氧化硅通过改性聚芳酯,不仅可以使二氧化硅粉体的表面功能化,而且可以显著改善纳米二氧化硅在聚芳酯基体中的分散性和相容性,从而提高耐磨泥浆泵挡酸板的综合性能,聚芳酯耐磨提高挡酸板的耐磨性能,石墨化炭黑耐腐蚀提高力学强度乳酸钠锆偶联剂提高辉绿岩粉等在聚全氟代丙烯的分散。
本发明相比现有技术具有如下优点:
本发明公开的耐磨泥浆泵挡酸板耐高温,耐腐蚀对大多数化学药品和溶剂,表现出惰性、能耐强酸强碱、水和各种有机溶剂。耐气候、高绝缘、高润滑、不粘附,耐磨性能好,具有防腐蚀功能,能够运输含有腐蚀性的介质,像强酸、强碱等,对于高粘稠的介质一样可以通过砂浆泵进行运输,不粘附泥浆等介质物质,适合于耐磨泥浆泵的使用。
具体实施方式
下面用具体实施例说明本发明,但并不是对本发明的限制。
实施例1
(1)按重量份数计,称量以下原料:辉绿岩粉20份、改性聚芳酯20份、石墨化炭黑5份、地聚合物15份、碳纤维13份、碳化硅短纤3份、硫酸钡晶须1份、偶联剂1份、防老化剂1份,得混合料;(2)将聚全氟代丙烯粉末均匀0.0004g/cm2地厚度铺展在玻璃皿内,置于等离子体处理仪中,抽真空,在所需功率250W、20Pa下放电5min,得到经表面处理的聚全氟代丙烯;(3)聚苯硫醚酰胺6份、经表面处理的聚全氟代丙烯40份,与步骤(1)得到的混合料,在高速混合机中于室温下混合均匀后,在双螺杆挤出机上于温度310℃150rpm剪切速率下挤出板材,制得耐磨泥浆泵挡酸板。
进一步的,所述地聚合物为将在900℃下煅烧时间1h而得的偏高岭土、钠水玻璃、氢氧化钠与合成硅铝填料,按偏高岭土∶硅酸钠∶氢氧化钠∶合成硅铝填料=45∶50∶3∶3,高岭土的煅烧温度为900℃,称量、混合、搅拌均匀,并于25℃相对湿度50%条件下养护60h后破碎至1000目,然后50℃烘干至恒重,得到地聚合物。
进一步的,所述改性聚芳酯为接枝改性聚芳酯,具体工艺方法为:纳米二氧化硅在110℃真空干燥6h后,加入AEROSIL R972纳米二氧化硅的质量3%的3-氨基丙基三乙氧基硅烷搅拌2h得硅烷改性二氧化硅,再将端羧基聚芳酯树脂在氮气保护下溶解在四氢呋喃中形成质量分数的溶液,加入4-二甲氨基吡啶25份,硅烷改性二氧化硅120份及二环己基碳二亚胺80份于30℃下搅拌14h在90℃下真空干燥6h后,按质量比10%的添加量加入工业用聚芳酯加热至熔融混炼塑化均匀10min后冷却,即得。
进一步的,所述石墨化炭黑为粒径200μm,BET比表面积125m2/g,950℃下挥发份1.5%的石墨化炭黑微粒,所述偶联剂为乳酸钠锆,所述防老化剂为N-环己基对乙氧基苯胺和N-(4-苯氨基苯基)-甲基丙烯酰胺的质量1∶1的混合物。
偏高岭土购自内蒙古清水河富厚益XY-60、钠水玻璃模数33,质量分数36%,聚芳酯为Vetra的A430,合成硅铝填料是造纸工业用合成硅铝填料,江苏品宁偶联剂的乳酸钠锆ZR-803,聚全氟代丙烯购自新氟科技公司的F46-XF-002。
接枝改性聚芳酯使用的端羧基聚芳酯的制备方法为:按重量份数计,将8份3,5-二苯甲酰氧基苯甲酸甲酯、AlCl33.18份、NaI9.6份、乙腈80份搅拌回流10h,倒入40份质量分数1%HCl溶液,加入60份乙酸乙酯萃取,分出水层,有机层用水洗,Na2S2O3水溶液洗涤,水洗,分出有机层,干燥后水浴蒸干,用乙酸乙酯-环己烷重结晶得到中间体A,将中间体A9.4份、二羟基二丁醚1.8份、4-二甲氨基吡啶2.4份溶于100份二氯甲烷中,冷却,搅拌下滴加溶于20份二氯甲烷的6份二环己基碳二亚胺溶液,搅拌过夜,在反应物中加入1%HCl溶液20份,在室温搅拌4h分解过量的二环己基碳二亚胺,然后过滤,滤饼用二氯甲烷洗涤,合并滤液,分去水层;油层水洗至中性后,以无水Na2SO4干燥,蒸去二氯甲烷后得到粗产品,用硅胶G为固定相,乙酸乙酯-环已烷(4:7)为流动相,经柱层析得到中间体B,将4份中间体B、NaI4份、AlCl3 1.36份溶于140份乙腈中,搅拌回流10h,倒入40份质量分数1%HCl溶液中,加入60份乙酸乙酯萃取,分出水层,有机层用水洗,Na2S2O3水溶液洗涤,水洗,分出有机层,干燥后水浴蒸干,得到羧端基聚芳酯。其结构式简式为:
实施例2
(1)按重量份数计,称量以下原料:辉绿岩粉15份、改性聚芳酯10份、石墨化炭黑4份、地聚合物15份、碳纤维10份、碳化硅短纤1份、硫酸钡晶须0.5份、偶联剂0.5份、防老化剂0.5份,得混合料;(2)将聚全氟代丙烯粉末均匀0.0002/cm2地厚度铺展在玻璃皿内,置于等离子体处理仪中,抽真空,在所需功率200W、15Pa下放电3min,得到经表面处理的聚全氟代丙烯;(3)聚苯硫醚酰胺8份、经表面处理的聚全氟代丙烯40份,与步骤(1)得到的混合料,在高速混合机中于室温下混合均匀后,在双螺杆挤出机上于温度270℃100rpm剪切速率下挤出板材,制得耐磨泥浆泵挡酸板。
进一步的,所述地聚合物为将在900℃下煅烧时间1h而得的偏高岭土、钠水玻璃、氢氧化钠与合成硅铝填料,按偏高岭土∶硅酸钠∶氢氧化钠∶合成硅铝填料=45∶50∶3∶3,高岭土的煅烧温度为900℃,称量、混合、搅拌均匀,并于25℃相对湿度50%条件下养护54h后破碎至800目,然后50℃烘干至恒重,得到地聚合物。
制备接枝改性聚芳酯,具体工艺方法为:AEROSIL R972纳米二氧化硅在110℃真空干燥4h后,加入纳米二氧化硅的质量2%的3-氨基丙基三乙氧基硅烷搅拌1h得硅烷改性二氧化硅,再将端羧基聚芳酯树脂在氮气保护下溶解在四氢呋喃中形成质量分数的溶液,加入4-二甲氨基吡啶24份,硅烷改性二氧化硅120份及二环己基碳二亚胺70份于25℃下搅拌12h在90℃下真空干燥6h后,按质量比10%添加量加入工业用聚芳酯加热至熔融混炼塑化均匀5min后冷却,即得,使用的端羧基聚芳酯树脂同实施例1,所述石墨化炭黑为粒径100μm,BET比表面积100m2/g,950℃下挥发份1%的石墨化炭黑微粒,所述偶联剂为2-甲基丙烯酸氯化铬,所述防老化剂为N-环己基对乙氧基苯胺和N-(4-苯氨基苯基)-甲基丙烯酰胺的质量1∶1的混合物。
偏高岭土购自内蒙古清水河富厚益XY-60、钠水玻璃模数33,质量分数36%,聚芳酯为Vetra的A430,合成硅铝填料是造纸工业用合成硅铝填料,聚全氟代丙烯购自新氟科技公司的F46-XF-001。
对比例1
本对比例与实施例2相比,省去石墨化炭黑,除此外的方法步骤均相同。
对比例2
本对比例与实施例2相比,省去接枝改性聚芳酯,除此外的方法步骤均相同。
对比例3
本对比例与实施例3相比,省去地聚合物,除此外的方法步骤均相同。
将实施例和对比例的耐磨泥浆泵挡酸板进行性能检测,检测结果见表1
表1实施例和对比例的耐磨泥浆泵挡酸板性能测试对比结果
注:拉伸强度按GB/T20671.7的规定;蠕变松弛率试验按GB/T20671.5的规定;耐热应力开裂按国家标准GB1842《聚乙烯环境应力开裂试验方法规定》进行,其中:a.试验温度:250℃试验时间:6小时试验结果的判断观察试样表面上是否有新生可见的裂纹,有则为不合格。
Claims (4)
1.一种耐磨泥浆泵挡酸板的制备方法,其特征在于,包括以下步骤:(1)按重量份数计,称量以下原料:辉绿岩粉15~20份、改性聚芳酯10~20份、石墨化炭黑4~5份、地聚合物10~15份、碳纤维10~13份、碳化硅短纤1~3份、硫酸钡晶须0.5~1份、偶联剂0.5~1份、防老化剂0.5~1份,得混合料,所述改性聚芳酯为接枝改性聚芳酯,具体工艺方法为:纳米二氧化硅在110℃真空干燥4~6h后,加入纳米二氧化硅的质量2~3%的3-氨基丙基三乙氧基硅烷搅拌1~2h得硅烷改性二氧化硅,再将端羧基聚芳酯树脂在氮气保护下溶解在四氢呋喃中形成质量分数的溶液,加入4-二甲氨基吡啶24~25份,硅烷改性二氧化硅120~150份及二环己基碳二亚胺70~80份于25~30℃下搅拌12~14h在90~100℃下真空干燥6h后,按质量比10~15%的添加量加入工业用聚芳酯加热至熔融混炼塑化均匀5~10min后冷却,即得,所述地聚合物为将在900℃下煅烧时间1~2h而得的偏高岭土、钠水玻璃、氢氧化钠与合成硅铝填料,按偏高岭土∶硅酸钠∶氢氧化钠∶合成硅铝填料=45~50∶50~54∶3~4∶3~5,高岭土的煅烧温度为900℃,称量、混合、搅拌均匀,并于25~30℃相对湿度50~60%条件下养护54~60h后破碎至800~1000目,然后50℃烘干至恒重,得到地聚合物;(2)将聚全氟代丙烯粉末均匀0.0002~0.0004g/cm2地厚度铺展在玻璃皿内,置于等离子体处理仪中,抽真空,在所需功率200~250W、15~20Pa下放电3~5min,得到经表面处理的聚全氟代丙烯;(3)聚苯硫醚酰胺6~8份、经表面处理的聚全氟代丙烯30~40份,与步骤(1)得到的混合料,在高速混合机中于室温下混合均匀后,在双螺杆挤出机上于温度270~310℃100~150rpm剪切速率下100~150rpm剪切速率下挤出板材,制得耐磨泥浆泵挡酸板。
2.按照权利要求1所述一种耐磨泥浆泵挡酸板的制备方法,其特征在于,所述石墨化炭黑为粒径100~200μm,BET比表面积100~125m2/g,950℃下挥发份1~1.5%的石墨化炭黑微粒。
3.按照权利要求1所述一种耐磨泥浆泵挡酸板的制备方法,其特征在于,所述偶联剂为乳酸钠锆、2-甲基丙烯酸氯化铬中的一种或多种。
4.按照权利要求1所述一种耐磨泥浆泵挡酸板的制备方法,其特征在于,所述防老化剂为N-环己基对乙氧基苯胺和N-(4-苯氨基苯基)-甲基丙烯酰胺的质量1∶1的混合物。
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