CN109536114A - 一种金属专用抗静电型pu植绒胶的制备方法 - Google Patents

一种金属专用抗静电型pu植绒胶的制备方法 Download PDF

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CN109536114A
CN109536114A CN201811462482.7A CN201811462482A CN109536114A CN 109536114 A CN109536114 A CN 109536114A CN 201811462482 A CN201811462482 A CN 201811462482A CN 109536114 A CN109536114 A CN 109536114A
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陆建明
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    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04Polyurethanes
    • C09J175/06Polyurethanes from polyesters
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/42Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4236Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
    • C08G18/4238Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
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    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
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    • C08G18/74Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76Polyisocyanates or polyisothiocyanates cyclic aromatic
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    • C08G18/7664Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
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    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
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    • CCHEMISTRY; METALLURGY
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    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/06Non-macromolecular additives organic
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Abstract

本发明涉及一种金属专用抗静电型PU植绒胶的制备方法,它包括以下步骤:(a)将100份溶剂型PU预聚体、10~30份PU交联剂、1~5份硅烷偶联剂和5~10份导电填料进行混合,(b)添加溶剂,调整步骤(a)的产物指标为:固含量40~50%、粘度300~600cps。通过采用特定的溶剂型PU预聚体与PU交联剂、硅烷偶联剂、导电填料进行混合,并调整至特定的固含量和粘度,可以在没有任何表面处理的前提下,对镀镍金属轴具有优良的粘接性,同时满足抗静电要求及植绒耐磨耗要求。

Description

一种金属专用抗静电型PU植绒胶的制备方法
技术领域
本发明属于胶粘剂领域,涉及一种植绒胶,具体涉及一种金属专用抗静电型PU植绒胶的制备方法。
背景技术
高速打印机、复印件的部分金属轴有时需要作植绒处理,这类金属通常经过镀镍、镀锌处理,且表面非常光滑,在植绒过程中又不允许镀层的任何破坏,即不允许打磨、酸洗等表面处理,因此粘接变得非常困难。为避免静电产生的卡纸现象,同时要求植绒胶层的电阻率小于105,达到抗静电级;目前市场无类似产品。
发明内容
本发明目的是为了克服现有技术的不足而提供一种金属专用抗静电型PU植绒胶的制备方法。
为达到上述目的,本发明采用的技术方案是:一种金属专用抗静电型PU植绒胶的制备方法,它包括以下步骤:
(a)将100份溶剂型PU预聚体、10~30份PU交联剂、1~5份硅烷偶联剂、5~10份导电填料进行混合,
(b)添加溶剂,调整步骤(a)的产物指标为:固含量40~50%、粘度300~600cps。
优化地,所述抗静电型PU植绒胶的制备方法包括以下步骤:(a1)将聚酯二元醇溶解于溶剂中,脱水得第一混合物;(a2)向第一混合物中加入粗MDI,搅拌反应后密封静置多天获得溶剂型PU预聚体。
优化地,所述PU交联剂为多官能团的。
优化地,所述硅烷偶联剂为选自KH-560、A-187、Z6040、KEPERADH 992中的一种或多种组成的混合物。
优化地,所述导电填料为导电炭黑或/和超导炭黑。
由于上述技术方案运用,本发明与现有技术相比具有下列优点:本发明金属专用抗静电型PU植绒胶的制备方法,通过采用特定的溶剂型PU预聚体与PU交联剂、硅烷偶联剂、导电填料进行混合,并调整至特定的固含量和粘度,可以在没有任何表面处理的前提下,对镀镍金属轴具有优良的粘接性,同时满足抗静电要求及植绒耐磨耗要求。
具体实施方式
本发明金属专用抗静电型PU植绒胶的制备方法,它包括以下步骤:(a)将100份溶剂型PU预聚体、10~30份PU交联剂、1~5份硅烷偶联剂、5~10份导电填料进行混合,(b)添加溶剂(乙酸丁酯),调整步骤(a)的产物指标为:固含量40~50%、粘度300~600cps。
通过采用特定的溶剂型PU预聚体与PU交联剂、硅烷偶联剂、导电填料进行混合,并调整至特定的固含量和粘度,可以在没有任何表面处理的前提下,对镀镍金属轴具有优良的粘接性,同时满足抗静电要求及植绒耐磨耗要求。
上述抗静电型PU植绒胶的制备方法包括以下步骤:(a1)将聚酯二元醇溶解于溶剂(乙酸丁酯等)中,脱水得第一混合物;(a2)向第一混合物中加入粗MDI(通常是44V20),搅拌反应后密封静置多天获得溶剂型PU预聚体。所述PU交联剂为多官能团的,通常为JQ-1(德国Bayer公司,大连染料厂)或7900胶(常州恒邦)中的一种或多种。所述硅烷偶联剂为选自KH-560、A-187、Z6040、KEPERADH 992中的一种或多种组成的混合物。所述导电填料为导电炭黑或/和超导炭黑。
下面将结合实施例对本发明进行进一步说明。
实施例1
本实施例提供一种抗静电型PU植绒胶的制备方法,它包括以下步骤:
(a):(a1)将100份聚酯二元醇(通常采用聚己二酸丁二醇酯,分子量约为2000)溶于100份溶剂(乙酸丁酯)中,脱水得第一混合物;(a2)向第一混合物中加入100份粗MDI(44V20),搅拌反应12h后密封静置3天,反应完全后获得PU预聚体(记为100份);在上述PU预聚体中添加20份PU交联剂(JQ-1)、3份硅烷偶联剂(KH560)、8份导电填料(市售导电炭黑和超导炭黑按质量比1:1混合)进行混合;
(b)添加溶剂(乙酸丁酯),调整至固体含量为40~50%、粘度为300-600cps即可。
实施例2
本实施例提供一种抗静电型PU植绒胶的制备方法,它与实施例1中的基本一致,不同的是:步骤(a)中,PU交联剂、硅烷偶联剂、导电填料的重量份数分别为10份、5份和10份。
实施例3
本实施例提供一种抗静电型PU植绒胶的制备方法,它与实施例1中的基本一致,不同的是:步骤(a)中,PU交联剂、硅烷偶联剂、导电填料的重量份数分别为30份、1份和5份。
实施例4
本实施例提供一种抗静电型PU植绒胶的制备方法,它与实施例1中的基本一致,不同的是:步骤(a)中,PU交联剂、硅烷偶联剂、导电填料的重量份数分别为25份、2份和5份。
对比例1
本例提供一种抗静电型PU植绒胶的制备方法,它与实施例1中的基本一致,不同的是:不含有PU交联剂。
对比例2
本例提供一种抗静电型PU植绒胶的制备方法,它与实施例1中的基本一致,不同的是:不含有硅烷偶联剂。
对比例3
本例提供一种抗静电型PU植绒胶的制备方法,它与实施例1中的基本一致,不同的是:不含有导电填料。
将实施例1~4、对比例1~3中制得的PU植绒胶应用于植绒样件的制备,具体如下:
(1)将镀镍金属轴用异丙醇擦洗;
(2)均匀喷涂植绒胶,植绒(静电植绒,电压为3~4kv/cm);常温放置1~4小时,随后于140℃加热干燥30min,再常温放置3天以上。
性能测试如下:金属粘接性:金属刀片表面十字切割,用3M胶带测试附着力或外力剥离试验;绒毛粘接性:用3M胶带测试,在放大镜下测试绒毛掉落数量;表面电阻仪测电阻;具体数据见表1。
表1实施例1~4、对比例1~3制得的金属专用抗静电型PU植绒胶性能表
上表中,热空气老化是指在70℃放置46小时。
上述实施例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施,并不能以此限制本发明的保护范围,凡根据本发明精神实质所作的等效变化或修饰,都应涵盖在本发明的保护范围之内。

Claims (5)

1.一种金属专用抗静电型PU植绒胶的制备方法,其特征在于,它包括以下步骤:
(a)将100份溶剂型PU预聚体、10~30份PU交联剂、1~5份硅烷偶联剂和5~10份导电填料进行混合,
(b)添加溶剂,调整步骤(a)的产物指标为:固含量40~50%、粘度300~600cps。
2.根据权利要求1所述金属专用抗静电型PU植绒胶的制备方法,其特征在于,所述溶剂型PU预聚体的制备方法包括以下步骤:(a1)将聚酯二元醇溶于溶剂中,脱水得第一混合物;(a2)向第一混合物中加入粗MDI,搅拌反应后密封静置多天,反应完成后获得溶剂型PU预聚体。
3.根据权利要求1所述金属专用抗静电型PU植绒胶的制备方法,其特征在于:所述PU交联剂为多官能团的。
4.根据权利要求1所述金属专用抗静电型PU植绒胶的制备方法,其特征在于:所述硅烷偶联剂为选自KH-560、A-187、Z6040、KEPERADH 992中的一种或多种组成的混合物。
5.根据权利要求1所述金属专用抗静电型PU植绒胶的制备方法,其特征在于:所述导电填料为导电炭黑或/和超导炭黑。
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Citations (4)

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CN101864264A (zh) * 2010-05-31 2010-10-20 北京高盟新材料股份有限公司 溶剂型聚氨酯植绒胶及其制备方法
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