廣東助焊劑原理真誠(chéng)推薦杭州正盟環(huán)保工程供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="【正盟環(huán)保】電子工業(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"><meta name="keywords" content="廣東助焊劑原理,助焊劑"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta 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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>廣東助焊劑原理,助焊劑</p><p><span>***更新：</span>2020-08-31 03:13:46</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="hbykzq7" 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="3rdk323" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="zd8hyfo" class="box"><p><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，廣東助焊劑原理。比重：助焊劑中溶劑載體與其他組分的密度相差較大，廣東助焊劑原理，廣東助焊劑原理，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。正盟牌助焊劑你值得擁有！廣東助焊劑原理</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東助焊劑原理,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520275449218/8342179.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！康退上阈兔馇逑粗竸┦且环N專(zhuān)為用于機(jī)器焊接高級(jí)多層電路板的助焊劑。此類(lèi)助焊劑助焊能力強(qiáng)，發(fā)泡性能好，不含鹵素，在焊接時(shí)產(chǎn)生的煙霧和其殘余物對(duì)焊料和裸銅無(wú)腐蝕性，在較高的預(yù)熱溫度100℃～130℃時(shí)得到狀態(tài)。因此，它是一種較理想的免清洗助焊劑，在板子上具有極高的表面絕緣阻抗以及快干的效果，板子的粘膩感亦可以減少到低的程度，能夠輕易地通過(guò)測(cè)試程序，適用于任何**線路板波峰焊、噴焊及手工焊。該助焊劑中溶劑既要對(duì)焊接表面具有良好的保護(hù)作用，又要有適當(dāng)?shù)酿ざ?。高沸點(diǎn)的醇保護(hù)效果較好，但黏度大、使用不便；低沸點(diǎn)的醇黏度低，但保護(hù)性差，因而可以考慮選擇混合醇的方法。有資料表明，乙醇、乙二醇、丙三醇和乙二醇丁醚的配比(質(zhì)量比)為2:8:8:1的混合溶劑效果上佳。湖州高溫助焊劑杭州正盟環(huán)保，水基環(huán)保助焊劑，環(huán)保級(jí)廠家直銷(xiāo)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東助焊劑原理,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274599609/8028515.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！繕?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，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，液態(tài)和糊狀的助焊劑分別適用于波峰焊。</p><p style="text-indent:25px">【正盟環(huán)?！克上愫秃稿a膏兩者有何分別？無(wú)機(jī)助焊劑一般是某些酸或者鹽，比如正磷酸H3PO4，有機(jī)助焊劑主要是某些有機(jī)酸或者有機(jī)鹵素；相對(duì)來(lái)說(shuō)，無(wú)機(jī)助焊劑活性相當(dāng)強(qiáng)，去除氧化膜效果較好，但腐蝕性也強(qiáng)，很容易傷及金屬及焊點(diǎn)，一般不能在焊接電子產(chǎn)品中運(yùn)用。焊錫膏就是用機(jī)油乳化后的無(wú)機(jī)焊劑，焊接后可用溶劑清洗，不過(guò)電路板的有些部位是很難清洗的，所以一般不推薦運(yùn)用焊錫膏。有機(jī)助焊劑活性僅次于無(wú)機(jī)助焊劑，也有一定的腐蝕性，且殘?jiān)灰浊逑?，揮發(fā)物對(duì)人體有害。松香的主要成份是松香酸和海松酸，一般成中性，液態(tài)松香有一定活性，呈現(xiàn)較弱的酸性，能與金屬表面氧化物發(fā)生反應(yīng)，生成松香酸銅等化合物，并懸浮在焊錫表面，且運(yùn)用的時(shí)候無(wú)腐蝕，絕緣性強(qiáng)。一般說(shuō)來(lái)，松香是常用的助焊劑。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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東助焊劑原理,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274609375/2746468.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？(三) 銅鏡腐蝕性：助焊劑的腐蝕性大小是對(duì)酸性強(qiáng)弱對(duì)基材影響的進(jìn)一步驗(yàn)證，衡量腐蝕性大小一般是在使用相當(dāng)普遍的基材銅上做銅鏡腐蝕試驗(yàn)。這項(xiàng)指標(biāo)也是需要在腐蝕性和可焊性之間做權(quán)衡。表面絕緣電阻：表面絕緣電阻的反應(yīng)的是助焊劑焊后產(chǎn)品可靠性，按照不同的測(cè)試標(biāo)準(zhǔn)對(duì)表面絕緣電阻值的要求也不一樣，按照GBT9491-2002標(biāo)準(zhǔn)SIR大于1011Ω，而按照IPC J-STD-004標(biāo)準(zhǔn)，SIR大于108Ω，因測(cè)試方法不同，兩者的對(duì)比并無(wú)意義。但可以確定的是SIR值是越大對(duì)焊后產(chǎn)品越有利。電化學(xué)遷移：電化學(xué)遷移也是對(duì)表面絕緣電阻值的進(jìn)一步要求，在更極端的環(huán)境下考察助焊劑的表面絕緣電阻。當(dāng)然該項(xiàng)指標(biāo)亦越大對(duì)焊后產(chǎn)品越有利。除上述詳細(xì)的技術(shù)參數(shù)的考慮，其次還需結(jié)合所需要裝配的電子產(chǎn)品的類(lèi)別或技術(shù)要求，選擇合適的助焊劑產(chǎn)品；需要對(duì)所選助焊劑，進(jìn)行試驗(yàn)驗(yàn)證和有效評(píng)估。杭州正盟環(huán)保，生產(chǎn)環(huán)保助焊劑，現(xiàn)貨供應(yīng)。浙江錫絲助焊劑</p><p style="text-indent:25px">生產(chǎn)助焊劑，批發(fā)質(zhì)量助焊劑，質(zhì)量保證，價(jià)格優(yōu)惠，量大從優(yōu)。廣東助焊劑原理</p><p style="text-indent:25px">【正盟環(huán)保】助焊劑各成分的作用之活化劑的作用機(jī)理活化劑主要作用是在焊接溫度下去除焊盤(pán)和焊料表面的氧化物，并形成保護(hù)層，防止基體的再次氧化，從而提高焊料和焊盤(pán)之間的潤(rùn)濕性。助焊劑活化劑的成分一般為氫氣、無(wú)機(jī)鹽、酸類(lèi)和胺類(lèi)，以及它們的復(fù)配組合物。【正盟環(huán)?！恐竸└鞒煞值淖饔弥畾錃?、無(wú)機(jī)鹽氫氣和無(wú)機(jī)鹽如氯化亞錫、氯化鋅、氯化銨等是利用其還原性與氧化物反應(yīng)，如：氣體助焊劑中的氫氣，在焊接之后水是其獨(dú)有的殘留物；而且氫的還原作用能有效地去除金屬表面的氧化物，把氧化物轉(zhuǎn)化為水。 MxOy＋yH 2 ＝xM＋yH 2 O 同時(shí)，氫還為金屬表面提供保護(hù)氣體，防止金屬表面在焊接完成之前再氧化。廣東助焊劑原理</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，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。公司自2011-03-18成立以來(lái)，投身于助焊劑，錫絲，錫條，錫膏，是環(huán)保的主力軍。正盟環(huán)保不斷開(kāi)拓創(chuàng)新，追求***，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺(tái)，以應(yīng)用為**，以服務(wù)為保障，不斷為客戶創(chuàng)造更高價(jià)值，提供更優(yōu)服務(wù)。正盟環(huán)保創(chuàng)始人李兆香，始終關(guān)注客戶，以優(yōu)化創(chuàng)新的科技，竭誠(chéng)為客戶提供極好的服務(wù)。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/1101356.html</p></div></div></div></div></div><div id="kjqsrsu" class="page-right twoColRt"><div id="mvcelcj" class="box01 margin10 clearfix"><h3><a 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