CN111876069A - 新型修复涂塑钢管 - Google Patents

新型修复涂塑钢管 Download PDF

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CN111876069A
CN111876069A CN202010622566.3A CN202010622566A CN111876069A CN 111876069 A CN111876069 A CN 111876069A CN 202010622566 A CN202010622566 A CN 202010622566A CN 111876069 A CN111876069 A CN 111876069A
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steel pipe
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余忠琪
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Jiangsu Ruiteng Coating Technology Co ltd
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Abstract

本发明涉及钢材生产技术领域，尤其是指新型修复涂塑钢管，其特征在于：包括钢管本体和涂覆在钢管本体表面的自修复防腐层，所述自修复防腐层为可自修复的黑色聚氨酯PU‑3BF材料，所述黑色聚氨酯PU‑3BF采用如下方法制备：将摩尔计量比为(0.02～0.06)：(0.01～0.03)：(0.1～0.3)的异氟尔酮二异氰酸酯(IPDI)、聚四亚甲基醚二醇PTMG、辛酸亚锡在氮气保护下升温至80～90℃反应2‑3h，然后加入磷溶液H3OP继续反应2‑3h，降温至50～60℃，加入计量比为(0.02～0.06)：(0.010～0.030)的N‑甲基吡咯烷酮和分散重氮黑3BF反应1～2h，最后抽真空脱溶剂。本发明能够有效提高钢管防腐性能，减少破损或失去防腐功能对管材使用寿命产生的影响，节省了钢材原料。

Description

新型修复涂塑钢管
技术领域
本发明涉及管材生产技术领域，特别涉及新型修复涂塑钢管。
背景技术
市场现应用成熟的管材因为管材防腐面在运输、存放、施工过程中因操作失误或现场条件不足会对管材防腐层造成损伤从而导致管材防腐层破损或失去防腐功能对管材使用寿命产生重大影响，造成人工财力的重大资源浪费。
发明内容
本发明的目的在于提供新型修复涂塑钢管，已解决现有技术中存在的问题。
本发明采用的技术方案如下：
所述新型修复涂塑钢管，包括钢管本体和涂覆在钢管本体表面的自修复防腐层，所述自修复防腐层为可自修复的黑色聚氨酯PU-3BF材料，所述黑色聚氨酯PU-3BF采用如下方法制备：将摩尔计量比为(0.02～0.06)：(0.01～0.03)：(0.1～0.3)的异氟尔酮二异氰酸酯(IPDI)、聚四亚甲基醚二醇PTMG、辛酸亚锡在氮气保护下升温至80～90℃反应2-3h，然后加入磷溶液H3OP继续反应2-3h，降温至50～60℃，加入计量比为(0.02～0.06)：(0.010～0.030)的N-甲基吡咯烷酮和分散重氮黑3BF反应1～2h，最后抽真空脱溶剂。
优选地，所述异氟尔酮二异氰酸酯(IPDI)的制备方法如下：在70～90℃反应条件下，将摩尔计量比为(2～4)：(20～50)：(0.06～0.09)的异氟尔酮二胺、碳酸二甲酯和硝酸铅常压反应6～8h，然后冷却后加入磷酸溶液中和反应，之后洗涤分离得到IPDI。
优选地，所述聚四亚甲基醚二醇PTMG的Mn＝2000。
优选地，所述分散重氮黑3BF的制备方法如下：在冰水浴中，将摩尔计量比为(1～3)：(4～8)的亚硝酸异戊酯和乙腈混合溶解，重氮化后与1-萘胺偶合,再以硫化钠还原而成。
优选地，制作工艺如下：将钢管本体加热到200℃，将所述可自修复的黑色聚氨酯PU-3BF粉末通过静电喷涂工艺喷涂到加热后的钢管本体上，固化15分钟。
优选地，所述静电喷涂工艺具体流程如下：将钢管本体进行前处理，保证钢管本体表面的干燥无油污，将可自修复的黑色聚氨酯PU-3BF粉末中混入流平剂和防腐剂后在电压为60kV的条件下采用电晕式静电喷枪均匀喷涂于钢管本体表面。
优选地，所述流平剂为硅氧烷丙烯酸酯。
优选地，所述防腐剂为乳液涂料杀菌剂Z-102。
与现有技术相比，本发明提出的新型修复涂塑钢管，以多官能团树枝状聚酯多元醇(H3OP)为内核，通过原位聚合形成聚氨酯预聚体为内层，分散重氮黑3BF(3BF,CAS:6232-57-1)原位交联形成外层制备出可自修复的黑色聚氨酯PU-3BF，将上述分级得到的材料粉末涂料在电压为60kV的条件下采用电晕式静电喷枪喷涂于钢管表面，之后在200℃的烘箱中烘烤15min，固化。所得到的新型修复涂塑钢管的表面涂层具有很好地自修复功能，能够有效的解决管材管材防腐面在运输、存放、施工过程中因操作失误或现场条件不足会对管材防腐层造成损伤，提高钢管防腐性能，有效减少破损或失去防腐功能对管材使用寿命产生的影响，有效的节省了钢材原料。
附图说明
图1为本发明的结构示意图；
附图标记：1-钢管本体、2-自修复防腐层。
具体实施方式
为使本领域技术人员更好的理解本发明的技术方案，下面结合附图和具体实施方式对本发明作详细说明。
实施例1
所述自修复防腐层的涂料粉末采用以下方法制备：第一步，在70～90℃反应条件下，将摩尔计量比为2：20：0.06的异氟尔酮二胺、碳酸二甲酯和硝酸铅常压反应6～8h，然后冷却后加入磷酸溶液中和反应，之后洗涤分离得到异氟尔酮二异氰酸酯(IPDI)；第二步，在冰水浴中，将摩尔计量比为1：4的亚硝酸异戊酯和乙腈混合溶解，重氮化后与1-萘胺偶合,再以硫化钠还原得到分散重氮黑3BF；第三步，将摩尔计量比为0.02：0.01：0.1的异氟尔酮二异氰酸酯(IPDI)、Mn＝2000的聚四亚甲基醚二醇PTMG、辛酸亚锡在氮气保护下升温至80～90℃反应2-3h，然后加入磷溶液H3OP继续反应2-3h，降温至50～60℃，加入计量比为0.02：0.010的N-甲基吡咯烷酮和分散重氮黑3BF反应1～2h，最后抽真空脱溶剂得到可自修复的黑色聚氨酯PU-3BF粉末；第四步，将质量比为95:2:3的可自修复的黑色聚氨酯PU-3BF粉末、硅氧烷丙烯酸酯、乳液涂料杀菌剂Z-102混合均匀得到涂料粉末。
实施例2
所述自修复防腐层的涂料粉末采用以下方法制备：第一步，在70～90℃反应条件下，将摩尔计量比为3：40：0.07的异氟尔酮二胺、碳酸二甲酯和硝酸铅常压反应6～8h，然后冷却后加入磷酸溶液中和反应，之后洗涤分离得到异氟尔酮二异氰酸酯(IPDI)；第二步，在冰水浴中，将摩尔计量比为2：6的亚硝酸异戊酯和乙腈混合溶解，重氮化后与1-萘胺偶合,再以硫化钠还原得到分散重氮黑3BF；第三步，将摩尔计量比为0.04：0.02：0.2的异氟尔酮二异氰酸酯(IPDI)、Mn＝2000的聚四亚甲基醚二醇PTMG、辛酸亚锡在氮气保护下升温至80～90℃反应2-3h，然后加入磷溶液H3OP继续反应2-3h，降温至50～60℃，加入计量比为0.025：0.020的N-甲基吡咯烷酮和分散重氮黑3BF反应1～2h，最后抽真空脱溶剂得到可自修复的黑色聚氨酯PU-3BF粉末；第四步，将质量比为96:3:2的可自修复的黑色聚氨酯PU-3BF粉末、硅氧烷丙烯酸酯、乳液涂料杀菌剂Z-102混合均匀得到涂料粉末。
实施例3
所述自修复防腐层的涂料粉末采用以下方法制备：第一步，在70～90℃反应条件下，将摩尔计量比为4：50：0.09的异氟尔酮二胺、碳酸二甲酯和硝酸铅常压反应6～8h，然后冷却后加入磷酸溶液中和反应，之后洗涤分离得到异氟尔酮二异氰酸酯(IPDI)；第二步，在冰水浴中，将摩尔计量比为3：8的亚硝酸异戊酯和乙腈混合溶解，重氮化后与1-萘胺偶合,再以硫化钠还原得到分散重氮黑3BF；第三步，将摩尔计量比为0.06：0.03：0.3的异氟尔酮二异氰酸酯(IPDI)、Mn＝2000的聚四亚甲基醚二醇PTMG、辛酸亚锡在氮气保护下升温至80～90℃反应2-3h，然后加入磷溶液H3OP继续反应2-3h，降温至50～60℃，加入计量比为0.06：0.030的N-甲基吡咯烷酮和分散重氮黑3BF反应1～2h，最后抽真空脱溶剂得到可自修复的黑色聚氨酯PU-3BF粉末；第四步，将质量比为97:1:3的可自修复的黑色聚氨酯PU-3BF粉末、硅氧烷丙烯酸酯、乳液涂料杀菌剂Z-102混合均匀得到涂料粉末。
实施例4
所述新型修复涂塑钢管，将钢管本体进行干燥洁净后加热到200℃，在电压为60kV的条件下采用电晕式静电喷枪将实施例1得到的混合均匀的涂料粉末均匀喷涂于钢管本体表面。
实施例5
与实施例4不同在于，新型修复涂塑钢管采用实施例2制得。
实施例6
与实施例4不同在于，新型修复涂塑钢管采用实施例3制得。
将实施例4-6进行性能测试，所有对比试验数据如下表所示。
耐磨性的测定：基于GB/T 1768进行测定；
硬度的测定：基于GB/T 6739进行测定；
耐化学稳定性的测定：基于GB/T 9274进行测定；
耐盐雾性的测定：基于GB/T 1771进行测定；
耐冲击的测定：基于SY/T 0442-2010进行测定。
Figure BDA0002565587780000051
Figure BDA0002565587780000061
最后需要说明，上述描述仅为本发明的优选实施例，本领域的技术人员在本发明的启示下，在不违背本发明宗旨及权利要求的前提下，可以做出多种类似的表示，这样的变换均落入本发明的保护范围之内。

Claims (8)

1.新型修复涂塑钢管，包括钢管本体和涂覆在钢管本体(1)表面的自修复防腐层，其特征在于：所述自修复防腐层(2)为可自修复的黑色聚氨酯PU-3BF材料，所述黑色聚氨酯PU-3BF采用如下方法制备：将摩尔计量比为(0.02～0.06)：(0.01～0.03)：(0.1～0.3)的异氟尔酮二异氰酸酯IPDI、聚四亚甲基醚二醇PTMG、辛酸亚锡在氮气保护下升温至80～90℃反应2-3h，然后加入磷溶液H3OP继续反应2-3h，降温至50～60℃，加入计量比为(0.02～0.06)：(0.010～0.030)的N-甲基吡咯烷酮和分散重氮黑3BF反应1～2h，最后抽真空脱溶剂。
2.根据权利要求1所述的新型修复涂塑钢管，其特征在于：所述异氟尔酮二异氰酸酯IPDI的制备方法如下：在70～90℃反应条件下，将摩尔计量比为(2～4)：(20～50)：(0.06～0.09)的异氟尔酮二胺、碳酸二甲酯和硝酸铅常压反应6～8h，然后冷却后加入磷酸溶液中和反应，之后洗涤分离得到IPDI。
3.根据权利要求1所述的新型修复涂塑钢管，其特征在于：所述聚四亚甲基醚二醇PTMG的Mn＝2000。
4.根据权利要求1所述的新型修复涂塑钢管，其特征在于：所述分散重氮黑3BF的制备方法如下：在冰水浴中，将摩尔计量比为(1～3)：(4～8)的亚硝酸异戊酯和乙腈混合溶解，重氮化后与1-萘胺偶合,再以硫化钠还原而成。
5.根据权利要求1所述的新型修复涂塑钢管，其特征在于：制作工艺如下，将钢管本体(1)加热到200℃，将所述可自修复的黑色聚氨酯PU-3BF粉末通过静电喷涂工艺喷涂到加热后的钢管本体(1)上，固化15分钟。
6.根据权利要求5所述的新型修复涂塑钢管，其特征在于：所述静电喷涂工艺具体流程如下：将钢管本体(1)进行前处理，保证钢管本体(1)表面的干燥无油污，将可自修复的黑色聚氨酯PU-3BF粉末中混入流平剂和防腐剂后在电压为60kV的条件下采用电晕式静电喷枪均匀喷涂于钢管本体(1)表面。
7.根据权利要求6所述的新型修复涂塑钢管，其特征在于：所述流平剂为硅氧烷丙烯酸酯。
8.根据权利要求6所述的新型修复涂塑钢管，其特征在于：所述防腐剂为乳液涂料杀菌剂Z-102。
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