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.index-module_taskLogo__71Tj5{height:66px;position:absolute;right:30px;top:0;width:66px}.index-module_drawerHand__aRhcO.index-module_open__qMl5O{right:480px}.index-module_reverse__OKr6k{transform:rotate(180deg)}網(wǎng)頁(yè)新聞貼吧知道網(wǎng)盤(pán)圖片視頻地圖文庫(kù)資訊采購(gòu)百科百度首頁(yè)登錄注冊(cè)進(jìn)入詞條全站搜索幫助首頁(yè)秒懂百科特色百科知識(shí)專(zhuān)題加入百科百科團(tuán)隊(duì)權(quán)威合作個(gè)人中心502膠水播報(bào)討論上傳視頻一種萬(wàn)能膠水展開(kāi)5個(gè)同名詞條收藏查看我的收藏0有用+10同義詞502（主要成分為α-氰基丙烯酸乙酯的膠水）一般指502膠水502膠，是以α－氰基丙烯酸乙酯為主，加入增粘劑、穩(wěn)定劑、增韌劑、阻聚劑等， 通過(guò)先進(jìn)生產(chǎn)工藝合成的單組份瞬間固化粘化，能粘住絕大多數(shù)各種材質(zhì)的物質(zhì)。在使用502膠水時(shí)，操作不慎可導(dǎo)致皮膚燒傷，應(yīng)清水沖洗后及時(shí)就醫(yī)。 [6]中文名502膠水外文名cyanoacrylate glue/adhesive/502 glue結(jié)構(gòu)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 質(zhì)無(wú)色透明、低粘度有無(wú)毒性毒性目錄1發(fā)展歷史2理化性質(zhì)3應(yīng)用領(lǐng)域4使用方法5安全事項(xiàng)6優(yōu)缺點(diǎn)?優(yōu)點(diǎn)?缺點(diǎn)7清除方法8儲(chǔ)存方法?貯存條件?包裝規(guī)格9重要事件10燒傷原理發(fā)展歷史播報(bào)編輯1951年，美國(guó)哈里·庫(kù)弗（Harry Coover）博士正在研究用于噴氣式飛機(jī)座艙蓋的耐熱聚合物，他意識(shí)到氰基丙烯酸酯不需要熱量或壓力來(lái)粘合。他的“醇催化氰基丙烯酸酯粘合劑組合物/強(qiáng)力膠”獲得了專(zhuān)利號(hào)2,768,109，并開(kāi)始精煉該產(chǎn)品以實(shí)現(xiàn)商業(yè)化。1958年，這種粘合劑以“Eastman 910”為名開(kāi)始銷(xiāo)售，后更名為“Super Glue”。 [8]越南戰(zhàn)爭(zhēng)期間，人們發(fā)現(xiàn)氰基丙烯酸酯可用于治療戰(zhàn)爭(zhēng)創(chuàng)傷，將其噴灑在開(kāi)放性傷口上，可以立即止血。FDA最終批準(zhǔn)氰基丙烯酸酯用于某些醫(yī)療用途。 [8]1964年，葛增蓓研制出了中國(guó)自己的速干膠，被命名為KH502，其中的“KH”是當(dāng)時(shí)中科院化學(xué)所的簡(jiǎn)稱(chēng)，“502”則是當(dāng)時(shí)實(shí)驗(yàn)室所在的房間號(hào)。502從誕生至今都一直在不斷地改進(jìn)配方，以提高粘接質(zhì)量。 [7]理化性質(zhì)播報(bào)編輯502膠水若暴露放置，接觸空氣中微量水汽，即被催化迅速聚合固化粘著，故有瞬間膠粘劑之稱(chēng)。502膠水的化學(xué)分子式為CH2=C(CN)-COO-C2H5，無(wú)色透明、低粘度、可燃性液體，單一成分、無(wú)溶劑，稍有刺激味、易揮發(fā)、揮發(fā)氣具弱催淚性。502膠水具有一定的毒性，固化以后毒性會(huì)降低，但是502膠水是氰基化合物，分解后還會(huì)產(chǎn)生有毒的物質(zhì)。遇潮濕水氣即被催化，迅速聚合固化粘著。在空氣中微量水催化下發(fā)生加聚反應(yīng)，迅速固化而將被粘物粘牢。 [1]應(yīng)用領(lǐng)域播報(bào)編輯502膠水為用于多孔性及吸收性材質(zhì)之接著，用于鋼鐵、有色金屬、橡膠、皮革、塑料、陶瓷、木材、非金屬陶瓷、玻璃及柔性材料像膠制品、皮鞋、軟、硬塑膠等自身或相互間的粘合，但對(duì)聚乙烯、聚丙烯、聚四氟乙烯等難粘材料，其表面需經(jīng)過(guò)特殊處理，方能粘結(jié)。廣泛用于電器、儀表、機(jī)械、電子、光儀、醫(yī)療、輕工民用等等行業(yè)。相類(lèi)似的產(chǎn)品還有401、415等，效果與502的相類(lèi)似，在市場(chǎng)中價(jià)格相對(duì)來(lái)說(shuō)較貴一些；價(jià)格低的還有青紅膠，也是AB膠的一種，價(jià)格相對(duì)來(lái)說(shuō)比較便宜。使用方法播報(bào)編輯1、使用前要先清潔被粘物表面，除去表面的灰塵、油污、鐵銹等，對(duì)金屬粘接時(shí)，最好先將其磨粗，對(duì)PE、PP等塑膠粘接時(shí)，應(yīng)先使其表面活化。2、打開(kāi)膠水瓶前蓋，并以手指輕扣尖端部位，使其不留有殘余液體，再用剪刀剪出孔穴。3、在被粘物表面滴一小滴此膠水，即刻進(jìn)行粘接，并保持至其硬化為止，當(dāng)然粘接面積不宜太大。4、使用后擦拭干凈膠水瓶，并蓋嚴(yán)蓋子，存放于陰涼干燥處或冷藏。 [2]安全事項(xiàng)播報(bào)編輯本品粘著迅速，防止操作中皮膚、衣物被粘著，本品具弱催淚性，慎防濺入眼內(nèi)，使用時(shí)注意通風(fēng)。1、該粘膠劑的蒸氣會(huì)刺激眼睛，所以使用時(shí)需格外小心。2、避免與皮膚的接觸及進(jìn)入眼睛，若因意外，應(yīng)立即用大量清水洗滌并送去醫(yī)院，清洗眼睛時(shí)，可使用稀碳酸氫鈉溶液。3、觸及手部時(shí)，可以用肥皂水、洗滌液或浮石等洗凈手部。要迅速用大量清水沖洗15至20分鐘，以此減輕身體損害，并在進(jìn)行后續(xù)急救處理后，及時(shí)前往醫(yī)院就醫(yī)。 [6]優(yōu)缺點(diǎn)播報(bào)編輯優(yōu)點(diǎn)1、單一成份：無(wú)溶劑，使用方便。2、瞬間接著：利用大氣中微量水氣，即可在極短時(shí)間內(nèi)接著。3、常溫硬化：不須加熱常溫下即可使用。4、透明無(wú)色：效果佳不變質(zhì)。5、較高粘度：適合多孔及吸收性材質(zhì)之接著6、502強(qiáng)力膠水，無(wú)色透明流動(dòng)性良好的液體，易揮發(fā)，遇水即聚合固化。7、產(chǎn)品單組份、固化速度快、使用方便、粘接力強(qiáng)、粘接材料廣泛。8、502膠水屬于單組份瞬間固化的粘合劑，由于其粘接速度快、粘接牢固。缺點(diǎn)1、固化后脆性大，不耐沖擊振動(dòng)。2、對(duì)于PP、PE等非極性聚合物難以粘接。3、耐老化性能差，耐溫性能差。4、耐水性能不高，在潮濕環(huán)境下容易失效。5、容易出現(xiàn)“白化”現(xiàn)象，影響外觀。6、可靠性不高，只能用于工藝品、小型零件的粘接定位。清除方法播報(bào)編輯1、可以用濕的熱毛巾在粘502那里。十幾分鐘后固化的502就會(huì)變軟，就可以清除了。還有可以在有502的地方再滴上一滴502，固化了的502也會(huì)變軟，這樣子用毛巾也能除去。 [3]2、用絕緣油，倒點(diǎn)變壓器里的絕緣油在桌上，502膠水很快變軟，可以很快搓掉了。3、使用解膠劑清洗。4、502膠水是一種瞬間膠，只要用有機(jī)溶劑或含有有機(jī)溶劑的物品（除風(fēng)油精和潤(rùn)膚油）就可以，比如丙酮（卸甲水中含有丙酮，只要將卸甲水涂抹到502膠水上，使勁揉搓，就可以清除）。但吸入丙酮有毒，注意使用方法，可以把粘膠的部分塞到瓶子里。但是關(guān)鍵是要操作得當(dāng)，如果操作不當(dāng)也不可能達(dá)到滿(mǎn)意效果。首先要確定沾染了502膠的衣物不含有醋酸纖維，才可以使用丙酮，去漬時(shí)最好把衣服翻轉(zhuǎn)到背面，在漬跡處下面墊上吸附材料(干凈毛巾、布片或衛(wèi)生紙等)，使用滴管將丙酮滴在漬跡周?chē)赏庀騼?nèi)逐步溶解，還可以墊上一層布輕輕擠壓、敲打幫助溶解，然后更換吸附材料重復(fù)上面的操作，直至溶解完畢。此外，丙酮有可能對(duì)一些面料的顏色產(chǎn)生不好的影響，因此就需要在背角處進(jìn)行試驗(yàn)后再確定是否使用。5、小面積粘上502膠水，只要用熱水浸泡2~3分鐘就可以，如果大面積沾上502膠水，涂上丙酮，大約等5～10分鐘就可以除去。6、用香蕉水滴在膠水漬上，同時(shí)用舊牙刷不斷攪刷，待膠水跡變軟脫下，再用清水漂凈，反覆刷洗，刷凈為止。在有膠水痕跡的衣物背面墊上吸水布，然后往膠水痕跡上涂些白醋，最后用棉花蘸水擦洗干凈。7、如果條件限制，可以用酒精（白酒、料酒等亦可）浸泡被粘處1-2分鐘，用剪刀（小心劃手）慢慢刮掉。 [4]儲(chǔ)存方法播報(bào)編輯貯存條件25℃以下，-10度以上3-12個(gè)月。包裝規(guī)格15g、 20g（通用型）、 50g、500g重要事件播報(bào)編輯2014年10月28日，家住浙江寧波鄞州邱隘的3歲男孩小杰(化名)將爸爸放在桌上的502膠水拿在手里，還模仿大人滴眼藥水的樣子把膠水往左眼里倒。 [5]2014年10月28日上午，入住寧波市第六醫(yī)院眼科病房里的小杰，左眼的眼睫毛被剃光，眼睛周?chē)妥竽橆a還有些許膠水粘在上面。醫(yī)生說(shuō)，經(jīng)過(guò)急救，對(duì)孩子的視力影響不大。 [5]502膠水的說(shuō)明書(shū)上寫(xiě)明：本劑的蒸氣會(huì)刺激黏膜和眼睛;避免與皮膚接觸、避免進(jìn)入眼睛，如有意外，應(yīng)立即以大量清水洗滌并送醫(yī)；觸及手時(shí)，可以用肥皂、水、洗滌液洗凈。 [5]事實(shí)上，各地都曾發(fā)生過(guò)502膠水滴入幼兒眼中的案例。對(duì)此，醫(yī)生提醒家長(zhǎng)，不要把膠水放在孩子容易拿到的地方。萬(wàn)一進(jìn)入孩子的眼睛，要盡快送到醫(yī)院。 [5]眼外傷重在防范，醫(yī)生提醒各位家長(zhǎng)，一定要讓各種可能對(duì)孩子造成威脅的東西遠(yuǎn)離孩子。否則，一旦造成意外，后果不可估量。 [5]燒傷原理播報(bào)編輯502膠水的成分為α-氰基丙烯酸乙酯，當(dāng)它與弱堿性材料混合時(shí)，會(huì)發(fā)生化學(xué)反應(yīng)而產(chǎn)熱，而某些因素例如棉花、羊毛等，可催化這一反應(yīng)，導(dǎo)致產(chǎn)生的熱量迅速積累（瞬間可達(dá)90℃）。如果沒(méi)有及時(shí)去除這個(gè)致病因素，會(huì)導(dǎo)致皮膚嚴(yán)重?zé)齻?[6]新手上路成長(zhǎng)任務(wù)編輯入門(mén)編輯規(guī)則本人編輯我有疑問(wèn)內(nèi)容質(zhì)疑在線(xiàn)客服官方貼吧意見(jiàn)反饋投訴建議舉報(bào)不良信息未通過(guò)詞條申訴投訴侵權(quán)信息封禁查詢(xún)與解封?2024?Baidu?使用百度前必讀?|?百科協(xié)議?|?隱私政策?|?百度百科合作平臺(tái)?|?京ICP證030173號(hào)?京公網(wǎng)安備11000002000001號(hào)window.PAGE_DATA= 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