CN112011226A - 一种高固含低voc连接漆 - Google Patents

一种高固含低voc连接漆 Download PDF

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CN112011226A
CN112011226A CN202010924632.2A CN202010924632A CN112011226A CN 112011226 A CN112011226 A CN 112011226A CN 202010924632 A CN202010924632 A CN 202010924632A CN 112011226 A CN112011226 A CN 112011226A
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王禄云
朱恒衡
郭宝
刘兴忠
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Abstract

本发明涉及一种高固含低VOC连接漆,所述连接漆由甲、乙两部分组成,所述甲组份由聚乙烯、环氧树脂、长石粉、硅灰石粉、分散剂、丙二醇甲醚、正丁醇组成,所述乙组份由聚酰胺树脂、三苯酚、古马隆树脂、丙二醇甲醚、正丁醇。本发明设计的一种双组份交联固化剂的高固含改性环氧连接漆,体积固含高达75%,VOC含量仅200g/L,施工时可直接喷涂而不用加稀释剂,环保高效。

Description

一种高固含低VOC连接漆
技术领域
本发明涉及材料技术领域,尤其涉及一种高固含低VOC连接漆。
背景技术
海洋船舶航行在大海中水面以下部位必须涂装防污涂料来防止海生物生长污损,而防污涂料一般柔韧性略差,在船体防锈底漆上附着力不佳,特别是随着防污涂料的水解释放毒料,漆膜的脆性会越来越大,这就需要涂刷一道对船体防锈涂料和防污涂料附着力都很好的连接漆来起到承上启下的作用。
综上所述,本领域缺乏一种能解决上述技术问题的高固含低VOC连接漆及其制备方法。
发明内容
本发明的目的在于提供一种高固含低VOC连接漆及其制备方法。
为实现上述目的,本发明提供了一种高固含低VOC连接漆,所述连接漆由甲、乙两部分组成,所述甲组份由聚乙烯、环氧树脂、长石粉、硅灰石粉、分散剂、丙二醇甲醚、正丁醇组成,所述乙组份由聚酰胺树脂、三苯酚、古马隆树脂、丙二醇甲醚、正丁醇。
优选地,所述甲组份由以下重量份的原料组成:聚乙烯12~20wt%、环氧树脂10~18wt%、长石粉30~40wt%、硅灰石粉15~25wt%、分散剂1~5wt%、丙二醇甲醚4~15wt%、正丁醇5~15wt%。
优选地,所述乙组份由以下重量份的原料组成:聚酰胺树脂40~60wt%、三苯酚10~15wt%、古马隆树脂10~25wt%、丙二醇甲醚5~10wt%、正丁醇5~10wt%。
优选地,所述聚乙烯为低密度聚乙烯,所述低密度聚乙烯包括2426H、LD605、LB7000中的一种或几种。
优选地,所述环氧树脂为低粘度二聚酸改性环氧树脂,所述低粘度二聚酸改性环氧树脂包括EPD-171、EPD-172L中的一种或几种,所述低粘度二聚酸改性环氧树脂的环氧当量为500g/eq以下。
优选地,所述长石粉为超细长石粉,所述超细长石粉经不低于600目的筛网过筛制得。
优选地,所述硅灰石粉为超细硅灰石粉经不低于400目的筛网过筛制得。
优选地,所述分散剂包括BKY110、BKY161、BKY163中的一种或几种。
优选地,所述聚酰胺树脂为低分子聚酰胺树脂,所述低分子聚酰胺树脂包括聚酰胺树脂650、聚酰胺树脂651、聚酰胺树脂300中的一种或几种。
本发明还提供一种高固含低VOC连接漆的制备方法,所述方法包括如下步骤:
(1)将聚乙烯、环氧树脂、正丁醇以2500~2600rpm转速分散,搅拌均匀;加入长石粉、硅灰石粉、分散剂、丙二醇甲醚,并以2500~2600rpm转速分散40min~60min,随后经磨砂机砂磨40min~60min,获得细度在40μm以下的涂料,即得甲组份;
(2)将聚酰胺树脂、三苯酚、古马隆树脂、丙二醇甲醚、正丁醇混合均匀,即得乙组分;
(3)使用前将甲组份和乙组分分离放置,并与水隔绝,放置于25℃下阴暗处;使用时将甲、乙两组分按照8~10:1重量比勾兑混合,搅拌均匀后喷涂施工。
本发明使用低密度聚乙烯与二聚酸改性柔性环氧属树枝作为主体成膜物质,二聚酸改性环氧固化后具有较好柔韧性,表面张力高,易被附着力,同时对船体环氧防锈漆具有较好浸润性,低密度聚乙烯均匀分布在连接漆漆膜中,容易被防污漆湿膜溶解渗透,防污漆喷涂在该连接漆上会溶解界面分布的低密度聚乙烯渗透进入连接漆漆膜中,干燥后将会形成牢固的咬合力,低密度聚乙烯具有溶解粘度低的特性,可溶解成高固含量树脂溶液使用,二聚酸改性环氧也具有较低的溶解粘度,两者配合使用使配制的连接漆固体含量较高。该改性环氧连接漆使用特制合成的改性胺类固化剂,使用低分子量聚酰胺树脂、三苯酚与不足量的环氧基硅烷反应,将聚酰胺树脂中小分子亲水胺类全部反应成疏水环氧胺聚合物,再添加高羟基含量古马隆树脂改性,增加该固化剂固化后的被溶胀特性
与现有技术相比,本发明具有如下有益效果:
本发明设计的一种双组份交联固化剂的高固含改性环氧连接漆,体积固含高达75%,VOC含量仅200g/L,施工时可直接喷涂而不用加稀释剂,环保高效。
具体实施方式
实施例1
按表1称量具体原料,步骤制备步骤如下:
(1)将聚乙烯、环氧树脂、正丁醇以2500rpm转速分散,搅拌均匀;加入长石粉、硅灰石粉、分散剂、丙二醇甲醚,并以2500rpm转速分散60min,随后经磨砂机砂磨40min,获得细度在40μm以下的涂料,即得甲组份;
(2)将聚酰胺树脂、三苯酚、古马隆树脂、丙二醇甲醚、正丁醇混合均匀,即得乙组分;
(3)使用前将甲组份和乙组分分离放置,并与水隔绝,放置于25℃下阴暗处;使用时将甲、乙两组分按照8:1重量比勾兑混合,搅拌均匀后喷涂施工。
实施例2
(1)将聚乙烯、环氧树脂、正丁醇以2500转速分散,搅拌均匀;加入长石粉、硅灰石粉、分散剂、丙二醇甲醚,并以2600rpm转速分散40min,随后经磨砂机砂磨60min,获得细度在40μm以下的涂料,即得甲组份;
(2)将聚酰胺树脂、三苯酚、古马隆树脂、丙二醇甲醚、正丁醇混合均匀,即得乙组分;
(3)使用前将甲组份和乙组分分离放置,并与水隔绝,放置于25℃下阴暗处;使用时将甲、乙两组分按照9:1重量比勾兑混合,搅拌均匀后喷涂施工。
实施例3
(1)将聚乙烯、环氧树脂、正丁醇以2500pm转速分散,搅拌均匀;加入长石粉、硅灰石粉、分散剂、丙二醇甲醚,并以2600rpm转速分散60min,随后经磨砂机砂磨40min,获得细度在40μm以下的涂料,即得甲组份;
(2)将聚酰胺树脂、三苯酚、古马隆树脂、丙二醇甲醚、正丁醇混合均匀,即得乙组分;
(3)使用前将甲组份和乙组分分离放置,并与水隔绝,放置于25℃下阴暗处;使用时将甲、乙两组分按照10:1重量比勾兑混合,搅拌均匀后喷涂施工。
对比例1
取标准粘度、环氧当量在500g/eq以上的二聚酸改性环氧树脂EPD-172替代实施例1中的EPD-172L,其他同实施例1。
表1
Figure BDA0002667935270000041
实施例4材料性能测试
按GB/T 9751所规定的方法对测定粘度;按GB/T 1731所规定的方法测定柔韧性;按GB/T 1732所规定的方法测定抗冲击;按GB/T 5210所规定的方法测定附着力;按GB/T6822所规定的方法测定耐浸泡性及耐海水冲刷;测试结果见表2。
表2连接漆性能测试结果
Figure BDA0002667935270000042
Figure BDA0002667935270000051
前述对本发明的具体示例性实施方案的描述是为了说明和例证的目的。这些描述并非想将本发明限定为所公开的精确形式,并且很显然,根据上述教导,可以进行很多改变和变化。对示例性实施例进行选择和描述的目的在于解释本发明的特定原理及其实际应用,从而使得本领域的技术人员能够实现并利用本发明的各种不同的示例性实施方案以及各种不同的选择和改变。本发明的范围意在由权利要求书及其等同形式所限定。

Claims (10)

1.一种高固含低VOC连接漆,其特征在于,所述连接漆由甲、乙两部分组成,所述甲组份由聚乙烯、环氧树脂、长石粉、硅灰石粉、分散剂、丙二醇甲醚、正丁醇组成,所述乙组份由聚酰胺树脂、三苯酚、古马隆树脂、丙二醇甲醚、正丁醇。
2.根据权利要求1所述的连接漆,其特征在于,所述甲组份由以下重量份的原料组成:聚乙烯12~20wt%、环氧树脂10~18wt%、长石粉30~40wt%、硅灰石粉15~25wt%、分散剂1~5wt%、丙二醇甲醚4~15wt%、正丁醇5~15wt%。
3.根据权利要求1所述的连接漆,其特征在于,所述乙组份由以下重量份的原料组成:聚酰胺树脂40~60wt%、三苯酚10~15wt%、古马隆树脂10~25wt%、丙二醇甲醚5~10wt%、正丁醇5~10wt%。
4.根据权利要求2所述的连接漆,其特征在于,所述聚乙烯为低密度聚乙烯,所述低密度聚乙烯包括2426H、LD605、LB7000中的一种或几种。
5.根据权利要求2所述的连接漆,其特征在于,所述环氧树脂为低粘度二聚酸改性环氧树脂,所述低粘度二聚酸改性环氧树脂包括EPD-171、EPD-172L中的一种或几种,所述低粘度二聚酸改性环氧树脂的环氧当量为500g/eq以下。
6.根据权利要求2所述的连接漆,其特征在于,所述长石粉为超细长石粉,所述超细长石粉经不低于600目的筛网过筛制得。
7.根据权利要求2所述的连接漆,其特征在于,所述硅灰石粉为超细硅灰石粉经不低于400目的筛网过筛制得。
8.根据权利要求2所述的连接漆,其特征在于,所述分散剂包括BKY110、BKY161、BKY163中的一种或几种。
9.根据权利要求3所述的连接漆,其特征在于,所述聚酰胺树脂为低分子聚酰胺树脂,所述低分子聚酰胺树脂包括聚酰胺树脂650、聚酰胺树脂651、聚酰胺树脂300中的一种或几种。
10.一种制备如权利要求1~9任一所述的高固含低VOC连接漆的方法,其特征在于,所述方法包括如下步骤:
(1)将聚乙烯、环氧树脂、正丁醇以2500~2600rpm转速分散,搅拌均匀;加入长石粉、硅灰石粉、分散剂、丙二醇甲醚,并以2500~2600rpm转速分散40min~60min,随后经磨砂机砂磨40min~60min,获得细度在40μm以下的涂料,即得甲组份;
(2)将聚酰胺树脂、三苯酚、古马隆树脂、丙二醇甲醚、正丁醇混合均匀,即得乙组分;
(3)使用前将甲组份和乙组分分离放置,并与水隔绝,放置于25℃下阴暗处;使用时将甲、乙两组分按照8~10:1重量比勾兑混合,搅拌均匀后喷涂施工。
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