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src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274472656/4640738.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="tn23lx8" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274472656/4640738.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="kcz33v7" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>浙江省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>衢州助焊劑要求,助焊劑</p><p><span>***更新：</span>2020-12-10 17:15:22</p><p><span id="click" >瀏覽次數(shù)：11次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="lzg3pg9" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">杭州正盟環(huán)保工程有限公司</a></p><p><span>聯(lián)系人：</span>李先生</p><p><span>郵箱: </span></p><p><span>電話: </span>13771706346</p><p><span>傳真: </span>0571_</p><p><span>網(wǎng)址: </span>http://www.hzzmhbgc.com</p><p><span>手機(jī): </span>0571-88117763</p><p><span>地址: </span>順風(fēng)路528號(hào)2號(hào)樓南樓東向3層</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="wfx8ovu" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="8tkw7gv" class="box"><p><p style="text-indent:25px">【正盟環(huán)保】樹(shù)脂系列助焊劑在電子產(chǎn)品的焊接中使用比例較大的是樹(shù)脂型助焊劑。由于它只能溶解于有機(jī)溶劑，故又稱(chēng)為有機(jī)溶劑助焊劑，其主要成分是松香。松香在固態(tài)時(shí)呈非活性，只有液態(tài)時(shí)才呈活性，其熔點(diǎn)為127℃活性可以持續(xù)到315℃。錫焊的溫度為240～250℃，所以正處于松香的活性溫度范圍內(nèi)，且它的焊接殘留物不存在腐蝕問(wèn)題，這些特性使松香為非腐蝕性焊劑而被廣泛應(yīng)用于電子設(shè)備的焊接中。為了不同的應(yīng)用需要，衢州助焊劑要求，衢州助焊劑要求，松香助焊劑有液態(tài)、糊狀和固態(tài)3種形態(tài)。固態(tài)的助焊劑適用于烙鐵焊，衢州助焊劑要求，液態(tài)和糊狀的助焊劑分別適用于波峰焊。買(mǎi)助焊劑，找正盟環(huán)保。衢州助焊劑要求</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="衢州助焊劑要求,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274472656/4640738.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！恐竸┏煞?近幾十年來(lái)，在電子產(chǎn)品生產(chǎn)錫焊工藝過(guò)程中，一般多使用主要由松香、樹(shù)脂、含鹵化物的活性劑、添加劑和有機(jī)溶劑組成的松香樹(shù)脂系助焊劑.這類(lèi)助焊劑雖然可焊性好，成本低，但焊后殘留物高.其殘留物含有鹵素離子，會(huì)逐步引起電氣絕緣性能下降和短路等問(wèn)題，要解決這一問(wèn)題，必須對(duì)電子印制板上的松香樹(shù)脂系助焊劑殘留物進(jìn)行清洗.這樣不但會(huì)增加生產(chǎn)成本，而且清洗松香樹(shù)脂系助焊劑殘留的清洗劑主要是氟氯化合物.這種化合物是大氣臭氧層的損耗物質(zhì)，屬于禁用和被淘汰之列.仍有不少公司沿用的工藝是屬于前述采用松香樹(shù)指系助焊劑焊錫再用清洗劑清洗的工藝，效率較低而成本偏高。杭州高溫助焊劑正盟環(huán)保助焊劑，您值得擁有！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="衢州助焊劑要求,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274873046/806821.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！侩娮庸I(yè)助焊劑之如何從技術(shù)性能指標(biāo)的角度選擇助焊劑？(二) 鹵素含量：鹵素具有較強(qiáng)的奪取電子能力，微量的鹵素存在會(huì)使得助焊劑的可焊性大幅提升，但鹵素的存在不僅有環(huán)保壓力也會(huì)給產(chǎn)品的可靠性造成一定影響。故助焊劑鹵素含量因應(yīng)用場(chǎng)景而定。比重：助焊劑中溶劑載體與其他組分的密度相差較大，助焊劑在儲(chǔ)存和使用過(guò)程中因?yàn)閾]發(fā)作用而損失掉，造成比重的變化，故比重一定程度上可以反映助焊劑濃度的變化，故比重應(yīng)用于生產(chǎn)中的管控指標(biāo)。固含量：固含量與焊后殘留量（即干凈度）有直接關(guān)系，但非對(duì)應(yīng)關(guān)系，主要是因?yàn)闇y(cè)試溫度和實(shí)際使用溫度上存在差異。所以固含量的是在可焊性和焊后干凈度之間做權(quán)衡。</p><p style="text-indent:25px">【正盟環(huán)?！恐竸┏煞?免洗助焊劑主要原料為有機(jī)溶劑，松香樹(shù)脂及其衍生物、合成樹(shù)脂表面活性劑、有機(jī)酸活化劑、防腐蝕劑，助溶劑、成膜劑.簡(jiǎn)單地說(shuō)是各種固體成分溶解在各種液體中形成均勻透明的混合溶液，其中各種成分所占比例各不相同，所起作用不同有機(jī)溶劑：酮類(lèi)、醇類(lèi)、酯類(lèi)中的一種或幾種混合物，常用的有乙醇、丙醇、丁醇;**、甲苯異丁基甲酮;醋酸乙酯,醋酸丁酯等.作為液體成分，其主要作用是溶解助焊劑中的固體成分，使之形成均勻的溶液，便于待焊元件均勻涂布適量的助焊劑成分，同時(shí)它還可以清洗輕的臟物和金屬表面的油污.杭州正盟環(huán)保工程有限公司專(zhuān)業(yè)生產(chǎn)水基環(huán)保免清洗焊劑。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="衢州助焊劑要求,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274921875/6047117.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！恐竸┑姆N類(lèi)很多，大體上可分為有機(jī)、無(wú)機(jī)和樹(shù)脂三大系列。 1、無(wú)機(jī)：無(wú)機(jī)系列助焊劑的化學(xué)作用強(qiáng)，助焊性能非常好，但腐蝕作用大，屬于酸性焊劑。由于它溶解于水，所以又稱(chēng)為水溶性助焊劑，它包括無(wú)機(jī)酸和無(wú)機(jī)鹽兩種。含有無(wú)機(jī)酸的助焊劑的主要成分是鹽酸、氫氟酸等，含有無(wú)機(jī)鹽的助焊劑的主要成分是氯化鋅、氯化銨等，它們使用后必須立即進(jìn)行非常嚴(yán)格的清洗，因?yàn)槿魏螝埩粼诒缓讣系柠u化物都會(huì)引起嚴(yán)重的腐蝕。無(wú)機(jī)系列助焊劑通常只用于非電子產(chǎn)品的焊接，在電子設(shè)備的裝聯(lián)中嚴(yán)禁使用這類(lèi)無(wú)機(jī)系列的助焊劑?，F(xiàn)貨批發(fā)助焊劑，量大從優(yōu)。紹興助焊劑品牌</p><p style="text-indent:25px">環(huán)保助焊劑，正盟環(huán)保生產(chǎn)批發(fā)工業(yè)紙質(zhì)量助焊劑。衢州助焊劑要求</p><p style="text-indent:25px">【正盟環(huán)?！恐竸└鞒煞值淖饔弥袡C(jī)酸酸類(lèi)活性劑（如鹵酸、羧酸、磺酸）主要是因?yàn)镠+和氧化物反應(yīng)，例如[3]：有機(jī)酸的羧基和金屬離子以金屬皂的形式除去焊盤(pán)和焊料的氧化膜： CuO＋2RCOOH→Cu(RCOO)2 ＋H 2 O 隨后有機(jī)酸銅發(fā)生分解，吸收氫氣，并生成有機(jī)酸與金屬銅： Cu(RCOO)2＋H2＋M→2RCOOH＋M－Cu 松香（Colophony）用分子式表示為C 19 H29COOH，由于它含有羧基，使得它在一定的溫度下，有一定的助焊作用；同時(shí)松香是一種大分子多環(huán)化合物，因此它具有一定的成膜性，在焊接過(guò)程中傳遞熱量和起覆蓋作用，能保護(hù)去除氧化膜后的金屬不再重新被氧化。現(xiàn)在有單一有機(jī)酸作活化劑，也有混酸用作活化劑。這些酸的沸點(diǎn)和分解溫度有一定的差異，這樣組合，可以使助焊劑的沸點(diǎn)和活化劑分解溫度呈一個(gè)較大的區(qū)間分布。衢州助焊劑要求</p><p style="text-indent:25px">杭州正盟環(huán)保工程有限公司致力于環(huán)保，是一家生產(chǎn)型公司。公司業(yè)務(wù)分為助焊劑，錫絲，錫條，錫膏等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶(hù)提供良好的產(chǎn)品和服務(wù)。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競(jìng)爭(zhēng)力，努力學(xué)習(xí)行業(yè)知識(shí)，遵守行業(yè)規(guī)范，植根于環(huán)保行業(yè)的發(fā)展。正盟環(huán)保立足于全國(guó)市場(chǎng)，依托強(qiáng)大的研發(fā)實(shí)力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶(hù)的變化需求。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2348087.html</p></div></div></div></div></div><div id="wk8gyfz" class="page-right twoColRt"><div id="bqiub39" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qp2ovx8" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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