CN111732693A - 一种泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料及制备方法 - Google Patents
一种泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料及制备方法 Download PDFInfo
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Abstract
本发明公开一种泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料及制备方法,包括步骤:将聚合多元醇抽真空脱水;在聚合多元醇加入多异氰酸酯,然后升温反应形成第一反应物,在反应过程中添加溶剂;对第一反应物降温并加入丙烯酸酯类单体和引发剂,保温反应形成第二反应物;对第二反应物降温并加入磷酸进行搅拌后,真空除溶剂,降温获得预聚体,预聚体密封保持;对预聚体升温并真空脱气泡;对模具调温保温;将扩链剂熔融后倒入预聚体中搅拌,搅匀后倒入已预热的模具中,待固化后用恒温进行第一次熟化,再次进行第二次熟化;本发明的材料具有耐腐蚀、耐磨、耐油、耐热性、耐挠性、耐水的优点,还具有尺寸稳定性好、机械强度高和使用寿命长的特点。
Description
技术领域
本发明涉及石油钻井泥浆泵活塞材料技术领域,具体涉及一种泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料及制备方法。
背景技术
泥浆泵是石油开发中钻井、修井作业的重要装备,其作用是在作业时以高压向井底输送高粘、大比重、含沙量较高钻井液钻井液,冲洗井底、破碎岩石、冷却润滑钻头,并将岩屑携带返回地面。泥浆泵活塞是泥浆泵在钻井过程中最重要部件之一,其工作环境十分恶劣。在钻井过程中,泥浆泵活塞损坏而频繁更换,大大降低了钻井工作效率,影响生产进度,并且在更换泥浆泵活塞的费用上也浪费巨大。
聚氨酯(PU)弹性体是由分子链段由软、硬链段交替组成,具有卓越的耐磨、柔性好、耐紫外线、耐低温等优点,常作为泥浆泵活塞的材料使用。但由于自身结构的限制,聚氨酯弹性体也有许多不足之处,其分子链内刚性基团少,耐热性及力学性能差,不能在高温高频条件下长期使用,使用温度不能超过120℃,应用受限。
鉴于上述缺陷,本发明创作者经过长时间的研究和实践终于获得了本发明。
发明内容
为解决上述技术缺陷,本发明采用的技术方案在于,提供一种泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法,包括步骤:
S1,将聚合多元醇抽真空脱水;
S2,在所述聚合多元醇加入多异氰酸酯,然后升温反应形成第一反应物,在反应过程中添加溶剂;
S3,对所述第一反应物降温并加入丙烯酸酯类单体和引发剂,保温反应形成第二反应物;
S4,对所述第二反应物降温并加入磷酸进行搅拌后,真空除所述溶剂,降温获得预聚体,所述预聚体密封保持;
S5,对所述预聚体升温并真空脱气泡;
S6,对模具调温保温;
S7,步骤S5、步骤S6完成后,将扩链剂熔融后倒入所述预聚体中搅拌,搅匀后倒入已预热的所述模具中,待固化后用恒温进行第一次熟化,出模获得预熟化材料;
S8,对所述预熟化材料再次进行第二次熟化,获得泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料。
较佳的,所述泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料在制备过程中以摩尔比计包括以下原料:8~12的所述聚合物多元醇、6~10的所述多异氰酸酯、2~4的所述扩链剂、10~15的所述溶剂、6~8的所述丙烯酸酯类单体、0.01~0.02的所述引发剂、0.1~0.3的所述磷酸。
较佳的,所述聚合物多元醇为聚醚多元醇、聚酯多元醇中的一种或者一种以上的混合物。
较佳的,所述多异氰酸酯为芳香族多异氰酸酯、脂肪族异氰酸酯中的一种或者一种以上的混合物。
较佳的,所述扩链剂为4,4’-二氨基二苯基甲烷、3,3’-二氯-4,4’-二氨基二苯基甲烷、3,5-二甲硫基甲苯二胺、2,4-甲苯二胺中的一种或者一种以上的混合物。
较佳的,所述溶剂为N-甲基吡咯烷酮、丁酮、丙酮中的一种或者一种以上的混合物。
较佳的,所述丙烯酸酯类单体为丙烯酸乙酯、丙烯酸酯、甲基丙烯酸甲酯、苯乙烯、丙烯酸丁酯、甲基丙烯酸乙酯、甲基丙烯酸丁酯、丙烯酸丙酯、甲基丙烯酸丙酯、丙烯酸己辛酯、甲基丙烯酸己辛酯、丙烯酸-2-乙基己酯、丙烯酸正辛酯、甲基丙烯酸正辛酯和丙烯酸苄酯中的一种或者一种以上的混合物。
较佳的,所述引发剂为偶氮二异丁腈、偶氮二异庚腈、过氧化苯甲酰、过氧化苯乙酰、过氧化二碳酸二异丙酯中的一种或者一种以上的混合物。
较佳的,所述磷酸为浓度85%工业磷酸。
较佳的,一种泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料,通过所述泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法制得。
与现有技术比较本发明的有益效果在于:本发明的材料具有耐腐蚀、耐磨、耐油、耐热性、耐挠性、耐水的优点,还具有尺寸稳定性好、机械强度高和使用寿命长的特点。
附图说明
图1为所述泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法的流程图。
具体实施方式
以下结合附图,对本发明上述的和另外的技术特征和优点作更详细的说明。
如图1所示,图1为所述泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法的流程图。本发明所述泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法,包括如下步骤:
S1,取一定量的聚合多元醇置于釜内,温度升至120℃~130℃,在此温度下抽真空脱水3h~4h;
S2,慢慢加多异氰酸酯,然后升温至80℃~90℃反应2h~4h,获得聚氨酯预聚体,反应过程中视黏度变化加入适量溶剂;
S3,降温度至70℃~80℃,加丙烯酸酯类单体,分批加入引发剂,每次间隔10min~20min,待引发剂滴加完毕后,保持温度在70℃~80℃,反应5h~6h;
S4,降温度至55℃~65℃,加磷酸,搅拌20min~30min,真空除溶剂,自然降至室温,获得聚丙烯酸酯改性聚氨酯预聚物,所述聚丙烯酸酯改性聚氨酯预聚物密封保持24h,方可浇注使用;
S5,把聚丙烯酸酯改性聚氨酯预聚物升温至80℃~90℃,真空脱气泡1h~1.5h;
S6,把模具放入烘干箱调温到115℃~125℃,保持0.5h~1h;
S7,待步骤S5、步骤S6完成后取一定量的扩链剂在电炉上熔融后倒入计算好的聚丙烯酸酯改性聚氨酯预聚物中,迅速搅匀后,倒入已预热的模具中,待几分钟固化后,放入烤箱中,用恒温115℃~125℃熟化1h~1.5h,即可出模,此为一次熟化;
S8,再次放入烘箱,80℃~90℃再熟化8h~12h,即为聚丙烯酸酯改性聚氨酯材料。
所述聚合物多元醇为聚醚多元醇、聚酯多元醇中的至少一种,以摩尔比计加入量为8~12。
所述多异氰酸酯为芳香族多异氰酸酯、脂肪族异氰酸酯中的至少一种,以摩尔比计加入量为6~10。
所述扩链剂则有4,4’-二氨基二苯基甲烷(MDA),3,3’-二氯-4,4’-二氨基二苯基甲烷(MOCA),3,5-二甲硫基甲苯二胺(DMTDA),2,4-甲苯二胺(TDA)的至少一种,以摩尔比计加入量为2~4。
所述的溶剂为N-甲基吡咯烷酮、丁酮、丙酮的一种或多种,以摩尔比计加入量为10~15。
所述的丙烯酸酯类单体为丙烯酸乙酯、丙烯酸酯、甲基丙烯酸甲酯、苯乙烯、丙烯酸丁酯、甲基丙烯酸乙酯、甲基丙烯酸丁酯、丙烯酸丙酯、甲基丙烯酸丙酯、丙烯酸己辛酯、甲基丙烯酸己辛酯、丙烯酸-2-乙基己酯、丙烯酸正辛酯、甲基丙烯酸正辛酯和丙烯酸苄酯中的一种或多种,以摩尔比计加入量为6~8。
所述的引发剂为偶氮二异丁腈(AIBN)、偶氮二异庚腈、过氧化苯甲酰(BP0)、过氧化苯乙酰、过氧化二碳酸二异丙酯中的一种或多种,以摩尔比计加入量为0.01~0.02。
所述磷酸为浓度85%工业磷酸,以摩尔比计加入量为0.1~0.3。
为了克服现有泥浆泵活塞耐磨性能差而致使其使用寿命短的不足,本发明提供一种耐腐蚀、耐磨、耐油、耐热性、耐挠性、耐水石油钻井泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料,根本上解决泥浆泵活塞易损问题,以提高其工作时效,降低成本。
以下通过具体的实施例进行说明:
实施例一
S1,取10mol聚四氢呋喃二醇置于釜内,温度升至120℃,抽真空脱水3h;
S2,然后慢慢加入8mol4,4-二苯基甲烷二异氰酸酯(MDI),然后升温至90℃反应3h,加入8mol丁酮调节粘度,得聚氨酯预聚体;
S3,降温至80℃并保温,加入1mol丙烯酸甲酯(MA),反应3h左右。降温70℃,加入3mol丙烯酸酯、3mol甲基丙烯酸甲酯,分批加入偶氮二异丁腈,每次间隔20min,大约3h加完,保温5h;
S4,降温度至55℃,加入0.01mol磷酸,搅拌20min,最后真空除溶剂,自然降至室温,得聚丙烯酸酯改性聚氨酯预聚物,预聚体密封保持24小时,方可浇注使用;
S5,把预聚体升温至90℃,真空脱气泡1h;
S6,把模具放入烘干箱调温到115℃,保持1h;
S7,待步骤S5、步骤S6完成后取2.1mol3,3’-二氯-4,4’-二氨基二苯基甲烷(MOCA)的扩链剂在电炉上熔融后倒入计算好的聚丙烯酸酯改性聚氨酯预聚物,迅速搅匀后,加入已预热的模具中,待几分钟固化后,放入烤箱中,120℃熟化1.5h,即可出模;
S7,再次放入烘箱,90℃再熟化8h,即为聚丙烯酸酯改性聚氨酯材料。
本实施例中所得的聚丙烯酸酯改性聚氨酯材料:硬度(邵氏)93A;断裂伸长率:518%;拉升强度:41MPa;回弹率:47%;抗冲击强度:32MPa;阿克隆磨耗:0.17;耐腐蚀:10%的硫酸40℃,保存6月不破坏;耐高温:110℃,保存6月不破坏。
实施例二
S1,取10mol聚己内酯二醇置于釜内,温度升至120℃,抽真空脱水3h;
S2,然后慢慢加入8mol甲苯-2,4-二异氰酸酯(TDI),然后升温至90℃反应3h,加入8mol丁酮调节粘度,得聚氨酯预聚体;
S3,降温至80℃并保温,加入2mol丙烯酸甲酯(MA),反应3h左右。降温70℃,加入2mol甲基丙烯酸甲酯、2mol苯乙烯,分批加入偶氮二异丁腈,每次间隔20大约3h加完,保温5h。
S4,降温度至55℃,加入0.01mol磷酸,搅拌20min,最后真空除溶剂,自然降至室温,得聚丙烯酸酯改性聚氨酯预聚物,预聚体密封保持24小时,方可浇注使用;
S5,把预聚体升温至90℃,真空脱气泡1h;
S6,把模具放入烘干箱调温到115℃,保持1h;
S7,待步骤S5、步骤S6完成后取2.1mol3,3’-二氯-4,4’-二氨基二苯基甲烷(MOCA)的扩链剂在电炉上熔融后倒入计算好的聚丙烯酸酯改性聚氨酯预聚物,迅速搅匀后,加入已预热的模具中,待几分钟固化后,放入烤箱中,120℃熟化1.5h,即可出模;
S8,再次放入烘箱,90℃再熟化8h,即为聚丙烯酸酯改性聚氨酯材料。
本实施例中所得的聚丙烯酸酯改性聚氨酯材料:硬度(邵氏)93A;断裂伸长率:520%;拉升强度:40MPa;回弹率:46%;抗冲击强度:31MPa;阿克隆磨耗:0.18;耐腐蚀:10%的硫酸40℃,保存6月不破坏;耐高温:110℃,保存6月不破坏。
实施例三
S1,取10mol聚己内酯二醇置于釜内,温度升至120℃,抽真空脱水3h;
S2,然后慢慢加入8.5moll,5萘二异氰酸酯(NDI),然后升温至90℃反应3h,加入8mol丁酮调节粘度,得聚氨酯预聚体;
S3,降温至80℃并保温,加入0.045mol甲基丙烯酸羟乙酯(HEMA),反应3h左右,加入40ml丙酮调节黏度。降温70℃,加入0.1mol丙烯酸酯、0.1moI甲基丙烯酸甲酯,分批加入过氧化苯甲酰,每次间隔20min,大约3h加完,保温温5h;
S4,降温度至55℃,加入0.01mol磷酸,搅拌20min,最后真空除溶剂,自然降至室温,得聚丙烯酸酯改性聚氨酯预聚物,预聚体密封保持24小时,方可浇注使用;
S5,把预聚体升温至90℃,真空脱气泡1h;
S6,把模具放入烘干箱调温到115℃,保持ih;
S7,待步骤S5、步骤S6完成后取1.6mol3,3’-二氯-4,4’-二氨基二苯基甲烷(MOCA)的扩链剂在电炉上熔融后倒入计算好的聚丙烯酸酯改性聚氨酯预聚物,迅速搅匀后,加入已预热的模具中,待几分钟固化后,放入烤箱中,120℃熟化1.5h,即可出模;
S8,再次放入烘箱,90℃再熟化8h,即为聚丙烯酸酯改性聚氨酯材料。
本实施例中所得的聚丙烯酸酯改性聚氨酯材料:硬度(邵氏)94A;断裂伸长率:525%;拉升强度:43MPa;回弹率:48%;抗冲击强度:33MPa;阿克隆磨耗:0.16;耐腐蚀:10%的硫酸40℃,保存6月不破坏;耐高温:110℃,保存6月不破坏。
以上所述仅为本发明的较佳实施例,对本发明而言仅仅是说明性的,而非限制性的。本专业技术人员理解,在本发明权利要求所限定的精神和范围内可对其进行许多改变,修改,甚至等效,但都将落入本发明的保护范围内。
Claims (10)
1.一种泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法,其特征在于,包括:
S1,将聚合多元醇抽真空脱水;
S2,在所述聚合多元醇加入多异氰酸酯,然后升温反应形成第一反应物,在反应过程中添加溶剂;
S3,对所述第一反应物降温并加入丙烯酸酯类单体和引发剂,保温反应形成第二反应物;
S4,对所述第二反应物降温并加入磷酸进行搅拌后,真空除所述溶剂,降温获得预聚体,所述预聚体密封保持;
S5,对所述预聚体升温并真空脱气泡;
S6,对模具调温保温;
S7,步骤S5、步骤S6完成后,将扩链剂熔融后倒入所述预聚体中搅拌,搅匀后倒入已预热的所述模具中,待固化后用恒温进行第一次熟化,出模获得预熟化材料;
S8,对所述预熟化材料再次进行第二次熟化,获得泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料。
2.如权利要求1所述的泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法,其特征在于,所述泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料在制备过程中以摩尔比计包括以下原料:8~12的所述聚合物多元醇、6~10的所述多异氰酸酯、2~4的所述扩链剂、10~15的所述溶剂、6~8的所述丙烯酸酯类单体、0.01~0.02的所述引发剂、0.1~0.3的所述磷酸。
3.如权利要求1所述的泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法,其特征在于,所述聚合物多元醇为聚醚多元醇、聚酯多元醇中的一种或者一种以上的混合物。
4.如权利要求1所述的泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法,其特征在于,所述多异氰酸酯为芳香族多异氰酸酯、脂肪族异氰酸酯中的一种或者一种以上的混合物。
5.如权利要求1所述的泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法,其特征在于,所述扩链剂为4,4’-二氨基二苯基甲烷、3,3’-二氯-4,4’-二氨基二苯基甲烷、3,5-二甲硫基甲苯二胺、2,4-甲苯二胺中的一种或者一种以上的混合物。
6.如权利要求1所述的泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法,其特征在于,所述溶剂为N-甲基吡咯烷酮、丁酮、丙酮中的一种或者一种以上的混合物。
7.如权利要求1所述的泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法,其特征在于,所述丙烯酸酯类单体为丙烯酸乙酯、丙烯酸酯、甲基丙烯酸甲酯、苯乙烯、丙烯酸丁酯、甲基丙烯酸乙酯、甲基丙烯酸丁酯、丙烯酸丙酯、甲基丙烯酸丙酯、丙烯酸己辛酯、甲基丙烯酸己辛酯、丙烯酸-2-乙基己酯、丙烯酸正辛酯、甲基丙烯酸正辛酯和丙烯酸苄酯中的一种或者一种以上的混合物。
8.如权利要求1所述的泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法,其特征在于,所述引发剂为偶氮二异丁腈、偶氮二异庚腈、过氧化苯甲酰、过氧化苯乙酰、过氧化二碳酸二异丙酯中的一种或者一种以上的混合物。
9.如权利要求1所述的泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法,其特征在于,所述磷酸为浓度85%工业磷酸。
10.一种泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料,其特征在于,通过如权利要求1-9中任一项所述的泥浆泵活塞用聚丙烯酸酯改性聚氨酯材料的制备方法制得。
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