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个人中心502胶水播报讨论上传视频一种万能胶水收藏查看我的收藏0有用+10502胶水（cyanoacrylate glue/adhesive/502 glue），也叫万能胶 [9]，主要成分是成分为α-氰基丙烯酸乙酯 [11]，属于化学制品 [9]，具有一定毒性 [12]，在空气中微量水催化下发生加聚反应，具有迅速聚合固化而将被粘物粘牢的特性，故有瞬间胶粘剂之称，因为粘合能力强，几乎适用于所有表面，广泛用于钢铁、有色金属、非金属陶瓷、玻璃、木材及柔性材料橡胶制品、皮鞋、软、硬塑胶等自身或相互间的粘合。 [9]1951年，美国哈里·库弗（Harry Coover）博士在研究用于喷气式飞机座舱盖的耐热聚合物，意识到氰基丙烯酸酯不需要热量或压力来粘合。他的“醇催化氰基丙烯酸酯粘合剂组合物/强力胶”获得了专利号2,768,109，并开始精炼该产品以实现商业化。1958年，这种粘合剂以“Eastman 910”为名开始销售，后更名为“Super Glue” [8]。1959年，美国公司发明出一款新的胶水，这就是速干胶 [13]。1964年，葛增蓓研制出中国自己的速干胶，被命名为KH502，其中的“KH”是当时中科院化学所的简称，“502”则是当时实验室所在的房间号。502从诞生至今都一直在不断地改进配方，以提高粘接质量。 [7]502胶水不慎接触皮肤，应先清水冲洗再及时就医 [10]。在购买502胶水时，关注产品标识、标签是否完整，特别应关注是否有注明现行有效的执行标准。使用过程中认真阅读产品使用注意事项；涂胶后必须晾置，使溶剂挥发干净，同时使用后的胶水应密封完全，储存在阴凉通风处。 [9]中文名502胶水
外文名cyanoacrylate glue/adhesive/502 glue
别    名万能胶 [9]
结构式CH2=C(CN)-COO-C2H5
用    途多用于多孔性及吸收性材料
主    料α－氰基丙烯酸乙酯
性    质无色透明、低粘度
有无毒性毒性

目录
1发展历史2理化性质3应用领域4使用方法5安全事项6优缺点▪优点▪缺点7清除方法8储存方法▪贮存条件▪包装规格9重要事件10烧伤原理
发展历史
播报编辑1951年，美国哈里·库弗（Harry Coover）博士正在研究用于喷气式飞机座舱盖的耐热聚合物，他意识到氰基丙烯酸酯不需要热量或压力来粘合。他的“醇催化氰基丙烯酸酯粘合剂组合物/强力胶”获得了专利号2,768,109，并开始精炼该产品以实现商业化。1958年，这种粘合剂以“Eastman 910”为名开始销售，后更名为“Super Glue”。 [8]越南战争期间，人们发现氰基丙烯酸酯可用于治疗战争创伤，将其喷洒在开放性伤口上，可以立即止血。FDA最终批准氰基丙烯酸酯用于某些医疗用途。 [8]1964年，葛增蓓研制出了中国自己的速干胶，被命名为KH502，其中的“KH”是当时中科院化学所的简称，“502”则是当时实验室所在的房间号。502从诞生至今都一直在不断地改进配方，以提高粘接质量。 [7]
理化性质
播报编辑502胶水若暴露放置，接触空气中微量水汽，即被催化迅速聚合固化粘着，故有瞬间胶粘剂之称。502胶水的化学分子式为CH2=C(CN)-COO-C2H5，无色透明、低粘度、可燃性液体，单一成分、无溶剂，稍有刺激味、易挥发、挥发气具弱催泪性。502胶水具有一定的毒性，固化以后毒性会降低，但是502胶水是氰基化合物，分解后还会产生有毒的物质。遇潮湿水气即被催化，迅速聚合固化粘着。在空气中微量水催化下发生加聚反应，迅速固化而将被粘物粘牢。 [1]502胶水实拍图
应用领域
播报编辑502胶水为用于多孔性及吸收性材质之接着，用于钢铁、有色金属、橡胶、皮革、塑料、陶瓷、木材、非金属陶瓷、玻璃及柔性材料像胶制品、皮鞋、软、硬塑胶等自身或相互间的粘合，但对聚乙烯、聚丙烯、聚四氟乙烯等难粘材料，其表面需经过特殊处理，方能粘结。广泛用于电器、仪表、机械、电子、光仪、医疗、轻工民用等等行业。相类似的产品还有401、415等，效果与502的相类似，在市场中价格相对来说较贵一些；价格低的还有青红胶，也是AB胶的一种，价格相对来说比较便宜。
使用方法
播报编辑1、使用前要先清洁被粘物表面，除去表面的灰尘、油污、铁锈等，对金属粘接时，最好先将其磨粗，对PE、PP等塑胶粘接时，应先使其表面活化。2、打开胶水瓶前盖，并以手指轻扣尖端部位，使其不留有残余液体，再用剪刀剪出孔穴。3、在被粘物表面滴一小滴此胶水，即刻进行粘接，并保持至其硬化为止，当然粘接面积不宜太大。4、使用后擦拭干净胶水瓶，并盖严盖子，存放于阴凉干燥处或冷藏。 [2]
安全事项
播报编辑本品粘着迅速，防止操作中皮肤、衣物被粘着，本品具弱催泪性，慎防溅入眼内，使用时注意通风。1、该粘胶剂的蒸气会刺激眼睛，所以使用时需格外小心。2、避免与皮肤的接触及进入眼睛，若因意外，应立即用大量清水洗涤并送去医院，清洗眼睛时，可使用稀碳酸氢钠溶液。3、触及手部时，可以用肥皂水、洗涤液或浮石等洗净手部。要迅速用大量清水冲洗15至20分钟，以此减轻身体损害，并在进行后续急救处理后，及时前往医院就医。 [6]
优缺点
播报编辑优点1、单一成份：无溶剂，使用方便。2、瞬间接着：利用大气中微量水气，即可在极短时间内接着。3、常温硬化：不须加热常温下即可使用。4、透明无色：效果佳不变质。5、较高粘度：适合多孔及吸收性材质之接着6、502强力胶水，无色透明流动性良好的液体，易挥发，遇水即聚合固化。7、产品单组份、固化速度快、使用方便、粘接力强、粘接材料广泛。8、502胶水属于单组份瞬间固化的粘合剂，由于其粘接速度快、粘接牢固。缺点1、固化后脆性大，不耐冲击振动。2、对于PP、PE等非极性聚合物难以粘接。3、耐老化性能差，耐温性能差。4、耐水性能不高，在潮湿环境下容易失效。5、容易出现“白化”现象，影响外观。6、可靠性不高，只能用于工艺品、小型零件的粘接定位。
清除方法
播报编辑1、可以用湿的热毛巾在粘502那里。十几分钟后固化的502就会变软，就可以清除了。还有可以在有502的地方再滴上一滴502，固化了的502也会变软，这样子用毛巾也能除去。 [3]2、用绝缘油，倒点变压器里的绝缘油在桌上，502胶水很快变软，可以很快搓掉了。3、使用解胶剂清洗。4、502胶水是一种瞬间胶，只要用有机溶剂或含有有机溶剂的物品（除风油精和润肤油）就可以，比如丙酮（卸甲水中含有丙酮，只要将卸甲水涂抹到502胶水上，使劲揉搓，就可以清除）。但吸入丙酮有毒，注意使用方法，可以把粘胶的部分塞到瓶子里。但是关键是要操作得当，如果操作不当也不可能达到满意效果。首先要确定沾染了502胶的衣物不含有醋酸纤维，才可以使用丙酮，去渍时最好把衣服翻转到背面，在渍迹处下面垫上吸附材料(干净毛巾、布片或卫生纸等)，使用滴管将丙酮滴在渍迹周围，由外向内逐步溶解，还可以垫上一层布轻轻挤压、敲打帮助溶解，然后更换吸附材料重复上面的操作，直至溶解完毕。此外，丙酮有可能对一些面料的颜色产生不好的影响，因此就需要在背角处进行试验后再确定是否使用。5、小面积粘上502胶水，只要用热水浸泡2~3分钟就可以，如果大面积沾上502胶水，涂上丙酮，大约等5～10分钟就可以除去。6、用香蕉水滴在胶水渍上，同时用旧牙刷不断搅刷，待胶水迹变软脱下，再用清水漂净，反覆刷洗，刷净为止。在有胶水痕迹的衣物背面垫上吸水布，然后往胶水痕迹上涂些白醋，最后用棉花蘸水擦洗干净。7、如果条件限制，可以用酒精（白酒、料酒等亦可）浸泡被粘处1-2分钟，用剪刀（小心划手）慢慢刮掉。 [4]
储存方法
播报编辑贮存条件25℃以下，-10度以上3-12个月。包装规格15g、 20g（通用型）、 50g、500g
重要事件
播报编辑2014年10月28日，家住浙江宁波鄞州邱隘的3岁男孩小杰(化名)将爸爸放在桌上的502胶水拿在手里，还模仿大人滴眼药水的样子把胶水往左眼里倒。 [5]2014年10月28日上午，入住宁波市第六医院眼科病房里的小杰，左眼的眼睫毛被剃光，眼睛周围和左脸颊还有些许胶水粘在上面。医生说，经过急救，对孩子的视力影响不大。 [5]502胶水的说明书上写明：本剂的蒸气会刺激黏膜和眼睛;避免与皮肤接触、避免进入眼睛，如有意外，应立即以大量清水洗涤并送医；触及手时，可以用肥皂、水、洗涤液洗净。 [5]事实上，各地都曾发生过502胶水滴入幼儿眼中的案例。对此，医生提醒家长，不要把胶水放在孩子容易拿到的地方。万一进入孩子的眼睛，要尽快送到医院。 [5]眼外伤重在防范，医生提醒各位家长，一定要让各种可能对孩子造成威胁的东西远离孩子。否则，一旦造成意外，后果不可估量。 [5]
烧伤原理
播报编辑502胶水的成分为α-氰基丙烯酸乙酯，当它与弱碱性材料混合时，会发生化学反应而产热，而某些因素例如棉花、羊毛等，可催化这一反应，导致产生的热量迅速积累（瞬间可达90℃）。如果没有及时去除这个致病因素，会导致皮肤严重烧伤。 [6]新手上路成长任务编辑入门编辑规则本人编辑我有疑问内容质疑在线客服官方贴吧意见反馈投诉建议举报不良信息未通过词条申诉投诉侵权信息封禁查询与解封©2025 Baidu 使用百度前必读 | 百科协议 | 隐私政策 | 百度百科合作平台 | 京ICP证030173号 京公网安备11000002000001号window.PAGE_DATA= 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