北京助焊劑制作歡迎來電杭州正盟環(huán)保工程供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="【正盟環(huán)?！恐竸┳饔萌廴诤噶蠌埩θ廴诤噶媳砻婢哂幸欢ǖ膹埩?，就像雨水落在荷葉上，由于液體的表面張力會立即聚結(jié)成圓珠狀的水滴。熔融焊料的表面張力會阻止其向母材表面漫流，影響潤濕的正常進(jìn)行。當(dāng)助焊劑覆蓋在熔融焊料的表面時，可降低液態(tài)焊料的表面"><meta name="keywords" content="北京助焊劑制作,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 http-equiv="Cache-Control" content="no-transform" /> <meta 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class="container"><ul><li id = "index_index"><a href="http://www.cdcfah.com/"><span>首頁</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="lfrt4jg" class="twoCol"><div id="mlikja4" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_huanbao/">環(huán)保</a>?<a href="http://www.cdcfah.com/cp/second-huanbao_xifuji/">吸附劑</a>?<a href="http://www.cdcfah.com/cp/third-xifuji_qitaxifuji/">其他吸附劑</a>?北京助焊劑制作歡迎來電杭州正盟環(huán)保工程供應(yīng)</p><div id="rfh7rhl" class="leftbox clearfix"><h1>北京助焊劑制作歡迎來電杭州正盟環(huán)保工程供應(yīng)</h1><div id="fe9kho4" class="proBig"><div id="h2zw4bi" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637336031689003906/1471739.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="r3qbvr9" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637336031689003906/1471739.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="n22gspj" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>北京助焊劑制作,助焊劑</p><p><span>***更新：</span>2020-09-02 23:11:03</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="vu3jl3a" 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: </span>0571-88117763</p><p><span>地址: </span>順風(fēng)路528號2號樓南樓東向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="hgk9np9" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="x772wic" class="box"><p><p style="text-indent:25px">【正盟環(huán)?！恐竸┳饔?熔融焊料張力熔融焊料表面具有一定的張力，就像雨水落在荷葉上，由于液體的表面張力會立即聚結(jié)成圓珠狀的水滴。熔融焊料的表面張力會阻止其向母材表面漫流，影響潤濕的正常進(jìn)行。當(dāng)助焊劑覆蓋在熔融焊料的表面時，可降低液態(tài)焊料的表面張力，北京助焊劑制作，使?jié)櫇裥阅苊黠@得到提高保護(hù)焊接母材被焊材料在焊接過程中已破壞了原本的表面保護(hù)層，北京助焊劑制作。好的助焊劑在焊完之后，北京助焊劑制作，并迅速恢復(fù)到保護(hù)焊材的作用。能加快熱量從烙鐵頭向焊料和被焊物表面?zhèn)鬟f；合適的助焊劑還能使焊點美觀廠家供應(yīng)環(huán)保級助焊劑，***，助您安全焊接。北京助焊劑制作</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京助焊劑制作,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637336031689003906/1471739.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！磕壳皣鴥?nèi)常用的可靠性評價試驗主要為：表面絕緣阻抗測試，其次銅鏡腐蝕測試、離子濃度測試、軟釬焊性試驗等。表面絕緣阻抗測試試驗時用規(guī)定的材質(zhì)的梳型電極或環(huán)型電極，均勻地涂覆定量的焊劑，在約85℃的溫度下干燥30 min作為試片。先在常態(tài)下測定上述試片的絕緣電阻，然后將試片置于溫度為(40±2)℃，濕度約90%的恒溫恒濕箱中，保持96 h后取出，再放人用在(20±2)℃溫度下的特級酒石酸鈉的飽和溶液調(diào)節(jié)濕度(90%)的干燥器中，在1 h內(nèi)取出，然后在標(biāo)準(zhǔn)狀態(tài)下，使用絕緣電阻測定器測定表面絕緣電阻。表面絕緣電阻值大于108Ω才算符合可靠性要求。國外對于免清洗助焊劑的表面絕緣電阻要求較高，一般要求做加偏置電壓、長時間潮熱試驗。觀察焊后焊劑殘留物對表面絕緣電阻的時效影響，以此來衡量免清洗助焊劑的可靠性。杭州助焊劑生產(chǎn)生產(chǎn)水基環(huán)保免清洗焊劑、光伏組件助焊劑廠家。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京助焊劑制作,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274599609/8028515.jpg"></div><p style="text-indent:25px">【正盟環(huán)保】免清洗助焊劑要使焊接后的PCB板面不用清洗就能達(dá)到規(guī)定的質(zhì)量水平，助焊劑的選擇是一個關(guān)鍵，通常對免清洗助焊劑有下列要求： ①低固態(tài)含量：2%以下傳統(tǒng)的助焊劑有較高的固態(tài)含量（20～40%）、中等的固態(tài)含量（10～15%）和較低的固態(tài)含量（5～10%），用這些助焊劑焊接后的PCB板面留有或多或少的殘留物，而免清洗助焊劑的固態(tài)含量要求低于2%，而且不能含有松香，因此焊后板面基本無殘留物。 ②無腐蝕性：不含鹵素、表面絕緣電阻>1.0×1011Ω 傳統(tǒng)的助焊劑因為有較高的固態(tài)含量，焊接后可將部分有害物質(zhì)“包裹起來”，隔絕與空氣的接觸，形成絕緣保護(hù)層。而免清洗助焊劑，由于極低的固態(tài)含量不能形成絕緣保護(hù)層，若有少量的有害成分殘留在板面上，就會導(dǎo)致腐蝕和漏電等嚴(yán)重不良后果。因此，免清洗助焊劑中不允許含有鹵素成分。</p><p style="text-indent:25px">【正盟環(huán)?！繕渲盗兄竸?在實際使用中發(fā)現(xiàn)，松香為單體時，化學(xué)活性較弱，對促進(jìn)焊料的潤濕往往不夠充分，因此需要添加少量的活性劑，用以提高它的活性。松香系列焊劑根據(jù)有無添加活性劑和化學(xué)活性的強弱，被分為非活性化松香、弱活性化松香、活性化松香和超活性化松香4種，美國MIL標(biāo)準(zhǔn)中分別稱為R、RMA、RA、RSA，而日本JIS標(biāo)準(zhǔn)則根據(jù)助焊劑的含氯量劃分為AA（0.1wt%以下）、A（0.1～0.5wt%）、B（0.5～1.0wt%）3種等級。杭州正盟環(huán)保工程有限公司成立于1992年，坐落于杭州錢江經(jīng)濟開發(fā)區(qū)。多年公司秉承“誠信、創(chuàng)新、品質(zhì)、分享”的企業(yè)理念，依托區(qū)位、研發(fā)、生產(chǎn)、營銷等相對優(yōu)勢，致力于“產(chǎn)、學(xué)、研”相結(jié)合和科研成果的轉(zhuǎn)化，先后與同濟大學(xué)環(huán)境科學(xué)與工程學(xué)院、原化工部成都研究所等學(xué)術(shù)機構(gòu)建立技術(shù)合作關(guān)系，在電子化學(xué)、環(huán)境功能材料等領(lǐng)域成績斐然。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="北京助焊劑制作,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520275449218/8342179.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！恐竸└鞒煞值淖饔弥徫g劑緩蝕劑一般為吡咯類，例如苯并三氮唑（BTA），它是銅的高效緩蝕劑，其加入可以抑制助焊劑中的活性劑對銅板產(chǎn)生的腐蝕。一般認(rèn)為苯并三氮唑與銅反應(yīng)生成不溶性聚合物的沉淀膜。王偉科根據(jù)化學(xué)分析和X射線分析，認(rèn)為膜的經(jīng)驗式是BTA 4 Cu3Cl2? H2O和（BTA2Cu）2CuCl2?H2O，且聚合物和金屬銅的表面平行，非常穩(wěn)定。BTA在Cu 2 O層上成膜比在 CuO層上成膜更容易，而且膜的厚度厚了近一倍。 BTA的濃度大于l0-3 mol／L時，就可以很好地抑制銅的腐蝕。環(huán)保級助焊劑，可免除清洗工序，進(jìn)而節(jié)約制造商的生產(chǎn)費用和工作時間。嘉興助焊劑制作</p><p style="text-indent:25px">杭州正盟環(huán)保，生產(chǎn)環(huán)保助焊劑，現(xiàn)貨供應(yīng)。北京助焊劑制作</p><p style="text-indent:25px">【正盟環(huán)?！俊局竸┬≈R】助焊劑各成分的作用被焊金屬工件表面存在氧化物、灰塵等污垢，阻礙工件基體金屬和焊料之間以原子狀態(tài)相互擴散，因此必須去除氧化物等以使表面清潔露出金屬基體，但是被清潔的金屬基體表面的原子在大氣中又立刻被氧化，在焊接溫度下，氧化速度更快。所以在焊接過程中加入助焊劑，用來協(xié)助提供沒有氧化層的金屬表面，并保持這些表面的無氧化物狀態(tài)，直到焊錫與金屬表面完成焊接過程。同時依靠焊劑的化學(xué)作用，與被焊金屬表面的氧化物化合，在焊接溫度下形成液態(tài)化合物，使被焊金屬部位表面的金屬原子與熔融焊料的原子相互擴散，以達(dá)到錫焊連接的目的。在焊接過程中助焊劑還能促進(jìn)焊錫的流動和擴散，通過減小表面不平度來影響焊錫表面張力在焊錫擴散方向上的平衡。理想的助焊劑除化學(xué)活性外，還要具有良好的熱穩(wěn)定性、粘附力、擴展力、電解活性、環(huán)境穩(wěn)定性、化學(xué)官能團(tuán)及其反應(yīng)特性、流變特性、對通用清洗溶液和設(shè)備的適應(yīng)性等。助焊劑的上述作用都是通過其中的活化劑、溶劑、表面活性劑等成分的作用來實現(xiàn)的。北京助焊劑制作</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)涵蓋助焊劑，錫絲，錫條，錫膏等，價格合理，品質(zhì)有保證。公司秉持誠信為本的經(jīng)營理念，在環(huán)保深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點，發(fā)揮人才優(yōu)勢，打造環(huán)保良好品牌。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗，為客戶成功提供堅實有力的支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1134876.html</p></div></div></div></div></div><div id="apmbpgv" class="page-right twoColRt"><div id="gqnm4bn" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="jyv3wys" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="vkcmqx8" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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