CN1032969C - 模压法预处理橡胶表面提高与金属粘接强度的方法 - Google Patents
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Abstract
模压法预处理橡胶表面提高与金属粘接强度的方法,属粘接技术领域。将丁苯橡胶表面沉积上一层铜,经打磨、脱脂、清洗后,用常用的环氧树脂、酚醛树脂、聚氨酯等胶粘剂,使之与金属粘接,粘接强度可达30-60kg/cm2,可应用于国防工业和其它部门。
Description
本发明属于材料粘接技术领域。
橡胶与金属材料的粘接技术广泛应用于现代工业的各个部门。常用的胶粘剂有环氧树脂胶粘剂,橡胶胶粘剂和聚氨酯胶粘剂等。现有的橡胶表面处理技术主要是表现粗化方法:一般先用砂纸打磨,丙酮脱酯,再用浓硫酸或其它氧化剂溶液浸泡,以达到表面粗化的目的。由于一般的橡胶极性较低,与金属材料粘接有一定困难,即使采用现有的表面粗化方法预处理橡胶表面,粘接强度最大也只能达到20kg/cm2左右,极少能达到30kg/cm2,很难满足某些特殊用途的要求。例如海军潜艇表面用橡胶保护,粘接强度均希望更高。[参考文献(1)日本公开特许昭55/86853;(2)日本公开特许昭63/289042;(3)日本公开特许平01/168781;(4)《胶粘剂应用指南》(江苏科技出版社);(5)德国专利DE3607220]。
本发明的目的是在橡胶表面沉积上一层金属铜,再用常用胶粘剂粘合,大幅度提高橡胶与金属的粘接强度,满足海军潜艇防护等之需要。
本发明的内容由以下步骤组成:
方法一:模压铜粉法预处理橡胶表面后与金属的粘接。将已混炼好的橡胶置于五倍其质量的溶剂中溶解(用苯,甲苯等),秤取一定量的铜粉,用盐酸洗去表面氧化物,干燥后与橡胶溶液混合,充分搅拌,用毛刷均匀地涂刷硫化模的上下两面,中间是待硫化的橡胶,在油压机上加压20kg/cm2,硫化后取出橡胶,揭去聚丙烯膜,则铜粉被模压入硫化橡胶的表面。用砂纸打磨表面,丙酮洗去表面上的硅油,用环氧树脂(或酚醛树脂、聚氨酯)作胶粘剂使之与金属(钢、铜、铝、钛等)粘接,固化后,粘接强度可达30-60kg/cm2。
方法二:化学镀铜法预处理橡胶表面后与金属的粘接。将普通硫化橡胶或填充有羰基铁和铁氧体的硫化橡胶用砂纸打毛表面,丙酮清洗后置于10%硝酸中刻蚀15分钟,取出用水洗净,置于1%SnCl2溶液中敏化,再于PdCl2溶液中活化,最后放入CuSO4-酒石酸钾钠-甲醛溶液中镀铜(溶液用NaOH调pH>11.6),取出后用水洗净,干爆。镀好铜的橡胶用环氧树脂(或橡胶、酚醛树脂、聚氨酯等)粘接剂与金属(钢、铁、铜、铝、钛等)粘接,粘接强度可达60-80kg/cm2。
粘接强度数据均采用中华人民共和国化工部标准HG4-853-76测试方法测定拉伸剪切强度。
本发明与现有技术相比具有的优点:
1.羰基铁和铁氧体作为重要的吸收微波材料较难粘附到金属表面,本发明方法使羰基铁或铁氧体先填入橡胶,再粘接到金属表面成为可行。
2.本发明方法使橡胶与金属的粘接强度可以达到30-60kg/cm2,比现有技术提高1~3倍。
实现本发明的最佳实例如下:
1.模压铜粉法预处理丁苯胶与金属的粘接
商品丁苯生胶,其中含75%丁二烯,25%苯乙烯,经塑炼、混炼后,取5克溶于25克十氢萘中,秤取4克200目铜粉,用盐酸洗去表面氧化物,于燥后与橡胶溶液混合搅拌均匀,用毛刷涂于擦有少量硅油的聚丙烯膜上,真空抽去十氢萘,将膜置于硫化模的上下两面,中间放上待硫化的橡胶,在油压机上加压至20kg/cm2,150℃硫化一小时,取出后揭去聚丙烯膜,用砂纸打磨橡胶表面,丙酮清洗后干燥,用环氧618作胶粘剂,三乙烯四胺作固化剂,固化剂用量为胶粘剂重量的5-9%,与金属片粘接,粘接强度达45kg/cm2,橡胶本体破坏,而粘接界面尚未破坏。
2.化学镀铜法预处理硫化丁苯胶与金属的粘接
硫化好的商品丁苯胶,含75%丁二烯,25%苯乙烯,填充有50%炭黑,用砂纸打毛表面,丙酮清洗后,在10%硝酸中刻蚀15分钟,取出洗净后在1%SnCl2溶液中敏化10分钟,再于PdCl2溶液中活化15分钟,用水洗净后,放入CuSO4-酒石酸钾钠-甲醛溶液中,用5%NaOH调pH>11.6,镀铜5-10分钟,然后洗净,干燥,用环氧618作粘接剂,三乙烯四胺作固化剂,使之与金属片粘接,粘接强度达85kg/cm2,橡胶本体破坏,而粘接界面未破坏。
3.化学镀铜法预处理填充有羰基铁(或铁氧体)橡胶与金属的粘接
填充有羰基铁或铁氧体的橡胶对微波有吸收作用,可以制成隐身材料,在国防上有广泛的应用价值。
用含20重量份丁苯胶和80重量份羰基铁(或铁氧体)的硫化橡胶进行镀铜表面预处理。用J-01型改性酚醛树脂和DW-1型双组分聚氨酯胶粘剂分别使之与钢、铜、铝、钛、锰等金属粘接,粘接强度用酚醛树脂作胶粘剂时达25-45kg/cm2,用聚氨酯作胶粘剂时达20-40kg/cm2,用聚氨酯作胶粘剂时为20-40kg/cm2,若用环氧618粘接,强度为25-30kg/cm2,均为橡胶本体破坏,而用现有方法处理如此高填充量的橡胶,其与金属的粘接强度只有3-5kg/cm2。
Claims (1)
1.模压法预处理橡胶表面提高与金属粘接强度的方法,将橡胶与金属粘接,本发明的特征在于取混炼后的含75%丁二烯,25%苯乙烯的丁苯生胶5克溶于25克十氢萘或苯、甲苯中另秤取铜粉4克,用盐酸洗去表面氧化物,干燥后与橡胶溶液混合搅拌均匀,用毛刷涂干擦有少量硅油的聚丙烯膜上,真空抽去十氢萘或苯、甲苯,将聚丙烯膜置于硫化模的上下面,中间放上待硫化的橡胶,在油压机上加压至20kg/cm2,加热硫化的温度是150℃,1小时,取出后揭去聚丙烯膜,用砂纸打磨橡胶表面,用丙酮清洗后干燥,用环氧树脂618作胶粘剂,三乙烯四胺作固化剂,固化剂用量为胶粘剂重量的5-9%,或用聚氨酯胶粘剂,酚醛树脂胶粘剂,与金属粘接。
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DE60032053T2 (de) | 1999-04-28 | 2007-04-12 | Neomax Co., Ltd., Osaka | Verfahren zur Herstellung von einem metallbeschichteten Kunststoffteil |
ES2355907T3 (es) * | 2004-03-09 | 2011-04-01 | Nv Bekaert Sa | Artículo compuesto que comprende un elemento de refuerzo metálico embebido en un material polimérico termoplástico. |
JP5604244B2 (ja) * | 2010-09-24 | 2014-10-08 | 株式会社ブリヂストン | ゴム−金属複合体の製造方法、ゴム−金属複合体、タイヤ、免震用のゴム支承体、工業用ベルト、及びクローラー |
CN102115542B (zh) * | 2010-12-20 | 2012-10-10 | 洛阳双瑞橡塑科技有限公司 | 一种硫化橡胶与金属的粘接方法 |
CN104325636B (zh) * | 2014-11-10 | 2016-03-30 | 沈阳黎明航空发动机(集团)有限责任公司 | 一种丁腈橡胶金属粘接件真空袋成型制造方法 |
CN106753048A (zh) * | 2016-12-02 | 2017-05-31 | 陈佩珊 | 用于金属间粘接的粘接剂 |
CN113881355A (zh) * | 2020-07-03 | 2022-01-04 | 重庆虎溪电机工业有限责任公司 | 一种粘接铝合金连接环与橡胶圈的方法 |
CN113638950A (zh) * | 2021-08-10 | 2021-11-12 | 肇庆威尼托机械有限公司 | 一种压机外罩耐磨帖的粘贴方法 |
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