CN106634152A - 一种化工泵树脂涂料用固化剂 - Google Patents
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Abstract
本发明公开了一种化工泵树脂涂料用固化剂,涉及一种固化剂,具体由下列物质制成:甲基四氢苯酐、甲基六氢邻苯二甲酸酐、丁二酸酐、氯化偏苯三酸酐、聚乙二醇、三聚氯氰、苯甲醛、2‑溴‑4‑硝基咪唑、1‑三苯甲基咪唑、硅烷偶联剂。本发明制得的固化剂能有效提升树脂涂料的耐酸性能,并能将固化时长缩短30%左右,使用价值较高。
Description
技术领域
本发明涉及一种固化剂,具体涉及一种化工泵树脂涂料用固化剂。
背景技术
泵是用来输送液体并提高其压力的机械设备,根据其输送介质的不同而对应设计成不同的性能。常规的泵用来输送水等腐蚀性小的介质,但在化工生产中,通常需要运输酸碱性较高的液体,如盐酸、硫酸、碱液等,此时要求泵具有优良的耐酸碱腐蚀特性。目前提高泵耐酸碱性能的方法有对泵体表面处理、填塞隔离套、涂覆涂料等,其中涂覆涂料较为简单常见,即用一层特殊性能的涂料涂覆于泵体上,以提高泵的性能。现有的涂料多为树脂基涂料,涂料的特性不仅与树脂基体自身的性能相关,同时还受制于各种助剂的品质,其中固化剂是助剂中较为重要的一种,而多数固化剂固化时间较长,对涂料整体性能的提升不大,需要得到进一步的改善处理。
发明内容
本发明旨在提供一种化工泵树脂涂料用固化剂,能有效缩短固化时长,改善涂料的耐酸特性。
本发明通过以下技术方案来实现:
一种化工泵树脂涂料用固化剂,由如下重量份的物质制成:
70~80份甲基四氢苯酐、20~25份甲基六氢邻苯二甲酸酐、5~7份丁二酸酐、4~6份氯化偏苯三酸酐、2~4份聚乙二醇、1~3份三聚氯氰、2~3份苯甲醛、1~2份2-溴-4-硝基咪唑、0.5~1.5份1-三苯甲基咪唑、1~2份硅烷偶联剂。
优选的,由如下重量份的物质制成:
75份甲基四氢苯酐、23份甲基六氢邻苯二甲酸酐、6份丁二酸酐、5份氯化偏苯三酸酐、3份聚乙二醇、2份三聚氯氰、2.5份苯甲醛、1.5份2-溴-4-硝基咪唑、1份1-三苯甲基咪唑、1.5份硅烷偶联剂。
进一步的,所述硅烷偶联剂为硅烷偶联剂kh550。
一种化工泵树脂涂料用固化剂的制备方法,包括如下步骤:
(1)先将甲基四氢苯酐、甲基六氢邻苯二甲酸酐、丁二酸酐、氯化偏苯三酸酐共同混合后放入反应釜中,以600~700转/分钟的转速不断搅拌至均匀后得混合物A备用;
(2)将聚乙二醇、三聚氯氰、苯甲醛与步骤(1)所得的混合物A混合后,在氮气的氛围中加热至95~100℃,同时增压至0.2~0.3MPa,共同处理40~45min后得混合物B备用;
(3)将2-溴-4-硝基咪唑、1-三苯甲基咪唑、硅烷偶联剂与混合物B共同混合后,加热至35~40℃,以800~900转/分钟的转速不断搅拌至均匀后即可。
进一步的,步骤(1)中所述搅拌处理时,将反应釜加热至33~36℃。
本发明具有如下有益效果:
本发明以甲基四氢苯酐为主要成分,并添加了甲基六氢邻苯二甲酸酐、丁二酸酐和氯化偏苯三酸酐,制成的混合酸酐溶液具有良好的耐酸特性,并能有效缩短树脂的固化时长,用聚乙二醇、三聚氯氰、硅烷偶联剂等成分对其整体进行改性处理后,能有效增强其与树脂的相容性,并能协助消除树脂基体中多余的活性基团,减少涂料中氢离子亲电攻击性,又有助于涂料溶剂挥发产生的通道的恢复,保证涂料的成膜性,进而增强涂料的耐酸、耐水等特性。在各成分的配合作用下,本发明制得的固化剂能有效提升树脂涂料的耐酸性能,并能将固化时长缩短30%左右,使用价值较高。
具体实施方式
实施例1
一种化工泵树脂涂料用固化剂,由如下重量份的物质制成:
70份甲基四氢苯酐、20份甲基六氢邻苯二甲酸酐、5份丁二酸酐、4份氯化偏苯三酸酐、2份聚乙二醇、1份三聚氯氰、2份苯甲醛、1份2-溴-4-硝基咪唑、0.5份1-三苯甲基咪唑、1份硅烷偶联剂。
进一步的,所述硅烷偶联剂为硅烷偶联剂kh550。
一种化工泵树脂涂料用固化剂的制备方法,包括如下步骤:
(1)先将甲基四氢苯酐、甲基六氢邻苯二甲酸酐、丁二酸酐、氯化偏苯三酸酐共同混合后放入反应釜中,以650转/分钟的转速不断搅拌至均匀后得混合物A备用;
(2)将聚乙二醇、三聚氯氰、苯甲醛与步骤(1)所得的混合物A混合后,在氮气的氛围中加热至98℃,同时增压至0.25MPa,共同处理43min后得混合物B备用;
(3)将2-溴-4-硝基咪唑、1-三苯甲基咪唑、硅烷偶联剂与混合物B共同混合后,加热至38℃,以860转/分钟的转速不断搅拌至均匀后即可。
进一步的,步骤(1)中所述搅拌处理时,将反应釜加热至35℃。
实施例2
一种化工泵树脂涂料用固化剂,由如下重量份的物质制成:
75份甲基四氢苯酐、23份甲基六氢邻苯二甲酸酐、6份丁二酸酐、5份氯化偏苯三酸酐、3份聚乙二醇、2份三聚氯氰、2.5份苯甲醛、1.5份2-溴-4-硝基咪唑、1份1-三苯甲基咪唑、1.5份硅烷偶联剂。其余方法步骤同实施例1。
实施例3
一种化工泵树脂涂料用固化剂,由如下重量份的物质制成:
80份甲基四氢苯酐、25份甲基六氢邻苯二甲酸酐、7份丁二酸酐、6份氯化偏苯三酸酐、4份聚乙二醇、3份三聚氯氰、3份苯甲醛、2份2-溴-4-硝基咪唑、1.5份1-三苯甲基咪唑、2份硅烷偶联剂。其余方法步骤同实施例1。
对比实施例1
本对比实施例1与实施例1相比,其成分中仅含有甲基四氢苯酐、甲基六氢邻苯二甲酸酐、丁二酸酐和氯化偏苯三酸酐,对应的重量份比例与实施例1相同,制备时将其混合均匀即可。
对照组
现有的树脂涂料用酸酐固化剂。
为了对比本发明效果,对上述固化剂进行测试实验,具体为:以环氧树脂为基体,分别加入上述五种方法对应的固化剂,添加的量均为树脂总质量的20%,除了固化剂的种类不同外,其余助剂和制造方法均相同,然后对制成的涂料进行性能检测,具体对比数据如下表1所示:
表1
注:上表1中所述的干燥时间参照GB/T 1728-89进行测试;所述耐酸性参照GB/T 1763-89进行测试。
由上表1可以看出,本发明制得的固化剂能有效缩短树脂涂料的干燥时长,提升了其耐酸特性,使用价值较高。
Claims (5)
1.一种化工泵树脂涂料用固化剂,其特征在于,由如下重量份的物质制成:
70~80份甲基四氢苯酐、20~25份甲基六氢邻苯二甲酸酐、5~7份丁二酸酐、4~6份氯化偏苯三酸酐、2~4份聚乙二醇、1~3份三聚氯氰、2~3份苯甲醛、1~2份2-溴-4-硝基咪唑、0.5~1.5份1-三苯甲基咪唑、1~2份硅烷偶联剂。
2.根据权利要求1所述的一种化工泵树脂涂料用固化剂,其特征在于,由如下重量份的物质制成:
75份甲基四氢苯酐、23份甲基六氢邻苯二甲酸酐、6份丁二酸酐、5份氯化偏苯三酸酐、3份聚乙二醇、2份三聚氯氰、2.5份苯甲醛、1.5份2-溴-4-硝基咪唑、1份1-三苯甲基咪唑、1.5份硅烷偶联剂。
3.根据权利要求1或2所述的一种化工泵树脂涂料用固化剂,其特征在于,所述硅烷偶联剂为硅烷偶联剂kh550。
4.一种如权利要求1或2所述的化工泵树脂涂料用固化剂的制备方法,其特征在于,包括如下步骤:
(1)先将甲基四氢苯酐、甲基六氢邻苯二甲酸酐、丁二酸酐、氯化偏苯三酸酐共同混合后放入反应釜中,以600~700转/分钟的转速不断搅拌至均匀后得混合物A备用;
(2)将聚乙二醇、三聚氯氰、苯甲醛与步骤(1)所得的混合物A混合后,在氮气的氛围中加热至95~100℃,同时增压至0.2~0.3MPa,共同处理40~45min后得混合物B备用;
(3)将2-溴-4-硝基咪唑、1-三苯甲基咪唑、硅烷偶联剂与混合物B共同混合后,加热至35~40℃,以800~900转/分钟的转速不断搅拌至均匀后即可。
5.根据权利要求4所述的一种化工泵树脂涂料用固化剂的制备方法,其特征在于,步骤(1)中所述搅拌处理时,将反应釜加热至33~36℃。
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