廣西M50固化劑特價歡迎來電江陰泉林化學(xué)品供應(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="施工環(huán)境對樹脂的固化影響很大，施工時環(huán)境溫度越高，膠凝和固化時間越短。有時施工溫度升高10℃，可使凝膠時間縮短將近1/2。如果施工環(huán)境溫度過低，易造成長久的欠固化。因為樹脂在低溫下雖然能夠膠凝，但膠凝后形成的大分子卻不能移動，由于沒有足夠的"><meta name="keywords" content="廣西M50固化劑特價,固化劑"><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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clearfix"><h1>廣西M50固化劑特價歡迎來電江陰泉林化學(xué)品供應(yīng)</h1><div id="v82qnmv" class="proBig"><div id="zoq2b83" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286280165664063/547126.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7ixjgx8" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286280165664063/547126.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qum8sg4" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>廣西M50固化劑特價,固化劑</p><p><span>***更新：</span>2020-09-07 13:10:30</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="j7nhtaz" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江陰泉林化學(xué)品有限公司</a></p><p><span>聯(lián)系人：</span>葉奇</p><p><span>郵箱: </span>63173667@QQ.COM</p><p><span>電話: </span>13861290603</p><p><span>傳真: </span>0510_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0510-86658688</p><p><span>地址: </span>常澄路1號16樓1617-1620</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="f88nula" class="page-proshow02"><p class="title">詳細說明</p><div id="ycjqizw" class="box"><p><p> 施工環(huán)境對樹脂的固化影響很大，施工時環(huán)境溫度越高，膠凝和固化時間越短。有時施工溫度升高 10℃，可使凝膠時間縮短將近 1/2。如果施工環(huán)境溫度過低，易造成長久的欠固化。因為樹脂在低溫下雖然能夠膠凝，但膠凝后形成的大分子卻不能移動，由于沒有足夠的放熱峰溫度引發(fā)固化劑不斷釋放自由基，使得連鎖交聯(lián)反應(yīng)不易進行， **終導(dǎo)致長久的欠固化。 </p> <p> 一般要求施工溫度不低于 15℃，相對濕度不大于 80%，廣西M50固化劑特價。 </p> <p> 一般為了使樹脂充分固化，固化成型后比較好進行高溫后固化處理。 </p> <p> <br /> 低溫或高濕度的不利的固化條件下，廣西M50固化劑特價，廣西M50固化劑特價，可采用復(fù)合固化系統(tǒng) 過氧化甲乙酮 1% N，N-二甲基苯胺 0.5% 過氧化苯甲酰 2%。廣西M50固化劑特價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣西M50固化劑特價,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286280165664063/547126.png"></div><p> 簡單來說，臨界溫度就是過氧化物大量分解產(chǎn)生自由基的比較低溫度。（這個溫度一般來說只是一個近似值。在此溫度以前同樣也有游離基放出，只是程度不同而已。） </p> <p> 我們可以根據(jù)過氧化物的臨界溫度不同將過氧化物分為中溫引發(fā)劑或高溫引發(fā)劑。對于拉擠成型以及模壓成型就是依據(jù)所使用的過氧化物的臨界溫度來確定工作溫度的。一般設(shè)定工作溫度要稍高于引發(fā)劑的臨界溫度。（例如：過氧化甲乙酮的臨界溫度是 80℃；過氧化苯甲酰的臨界溫度是 70℃；過氧化二叔丁基為 146℃；過苯甲酸叔丁酯為 194℃。拉擠成型工藝選用過氧化二苯甲酰和過氧化二叔丁基為引發(fā)劑，程序升溫采用的溫度就是 90℃；160℃。）廣西M50固化劑特價在同樣成分下，大制件相對小制件熱損失少，溫升就較高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣西M50固化劑特價,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286280068066406/7446006.png"></div><p> 甲基內(nèi)次甲基四氫鄰苯二甲酸酐MNA HT906 DQ19128 又名甲基納迪克酸酐黃色液體粘度138cps 每100份標(biāo)準(zhǔn)樹脂用72-90份固化：100-200℃2-4小時。適用期500克25℃5-6天（加促進劑）熱變形溫度150-175℃抗彎強度950Kg/cm2 抗壓強度1240Kg/cm2 抗拉強度680Kg/cm2 伸長率2.5% 沖擊強度0.48ft-1b/in （2.6Kg-cm/cm2）洛氏硬度111 介電常數(shù)（50Hz23℃）3.6 功率因數(shù)（50Hz23℃）0.002 體積電阻2x1016Ω-cm 粘度低、浸潤性好，使用壽命長。 </p> <p> 四氫鄰苯二甲酸酐 THPAHT909 RXE-H 70酸酐熔點100℃每100份標(biāo)準(zhǔn)樹脂用52-70份固化：150-200℃24小時。毒性低、揮發(fā)性小、工藝性好。 </p> <p> <br /> </p><p> 一般促進劑與固化劑（過氧化物）的摩爾比必須小于 1，（這種情況只有在選擇鈷鹽作為促進劑的情況下才能計算出），否則促進劑與初級游離基的逆反速度會大于初級游離基引發(fā)單體的速度，結(jié)果使轉(zhuǎn)化率下降。因此過多地使用促進劑并不能達到加速固化的效果，反而會使產(chǎn)品性能下降。 </p> <p> 對于低反應(yīng)活性的不飽和聚酯樹脂的固化宜選用低活性的固化系統(tǒng)。 </p> <p> 低溫或高濕度的不利的固化條件下，可采用復(fù)合固化系統(tǒng)： </p> <p> 過氧化甲乙酮 1% </p> <p> N，N-二甲基苯胺 0.5% </p> <p> 過氧化苯甲酰 2% 否則促進劑與初級游離基的逆反速度會大于初級游離基引發(fā)單體的速度，結(jié)果使轉(zhuǎn)化率下降。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣西M50固化劑特價,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637281088415224610/3058979.png"></div><p> 乙二胺 EDA H2NCH2CH2NH2 分子量60 活潑氫當(dāng)量15 無色液體每100份標(biāo)準(zhǔn)樹脂用6-8份性能：0、有剌激臭味，揮發(fā)性大、粘度低、可室溫快速固化。用于粘接、澆注、涂料。該類胺隨分子量增大，粘度增加，揮發(fā)性減小，毒性減小，性能提高。但它們放熱量大、適用期短。一般而言它們分子量越大受配合量影響越小。長期接觸脂肪多元胺會引起皮炎，它們的蒸汽毒性很強，操作時須十分注意。 </p> <p> 二乙烯三胺 DETA H2NC2H4NHC2H4NH2 分子量103活潑氫當(dāng)量20.6 無色液體每100份標(biāo)準(zhǔn)樹脂用8-11份。固化：20℃2小時+100℃30分鐘或20℃4天。性能：適用期50克25℃45分鐘，熱變形溫度95-124℃，抗彎強度1000-1160kg/cm2，抗壓強度1120kg/cm2，抗拉強度780kg/cm2，伸長率5.5%，沖擊強度 0.4尺-磅/寸洛氏硬度99-108。介電常數(shù)（50赫、23℃）4.1 功率因數(shù)（50赫、23℃）0.009 體積電阻2x1016 Ω-cm 常溫固化、毒性大、放熱量大、適用期短因此過多地使用促進劑并不能達到加速固化的效果，反而會使產(chǎn)品性能下降。廣西M50固化劑特價</p><p style="text-indent:25px">樹脂制品體積越大，應(yīng)適當(dāng)減少固化劑、促進劑的加入量。廣西M50固化劑特價</p><p> 當(dāng)然也會有其他導(dǎo)致樹脂變黃的原因?？偟膩碚f熱氧和紫外線是黃變的主要原因。采用飽和二元酸(或酸酐)代替芳香族二元酸(或酸酐)，雖然可以在一定程度上使樹脂顏色淺一點，但考慮到樹脂性能、成本等各方面的因素，所以此法也是不夠理想的。 </p> <p> 據(jù)**介紹，除了在生產(chǎn)、儲存過程中充惰性氣體盡可能隔絕與氧氣的接觸外，更有效的方法是添加抗氧劑與紫外線吸收劑，可有效地防止與延遲聚酯發(fā)生黃變。推薦的不飽和樹脂抗黃變解決方案是：選用不含胺類的抗氧劑，而采用主輔抗氧劑復(fù)配使用，主抗氧劑通常為受阻酚類，可以捕捉過氧化自由基；輔助抗氧劑則為亞磷酸酯類，在分解氫過氧化物的同時還能螯合金屬離子，防止樹脂氧化變色。如果想進一步提高耐黃變、耐候性，建議再添加紫外線吸收劑進去，添加紫外線吸收劑能有效***高分子材料，在紫外線作用下的黃變現(xiàn)象，且給產(chǎn)品提供優(yōu)異的保護作用，有效防止光澤的降低、裂紋、氣泡、脫層的產(chǎn)生，明顯提高產(chǎn)品的耐候性，與抗氧劑一起使用有很好的協(xié)同效應(yīng)。當(dāng)然抗氧劑與紫外線吸收劑的使用，并不能從根本上解決黃變問題，但是在一定的范圍內(nèi)，還是能有效地防止不飽和聚酯產(chǎn)品氧化黃變，保持產(chǎn)品水色透明，提高產(chǎn)品的檔次。廣西M50固化劑特價</p><p style="text-indent:25px">江陰泉林化學(xué)品有限公司主要經(jīng)營范圍是化工，擁有一支專業(yè)技術(shù)團隊和良好的市場口碑。公司業(yè)務(wù)分為不飽和聚酯樹脂不飽和樹脂，乙烯基樹脂，樹脂，膠衣，玻璃纖維紗，玻璃纖維布，固化劑促進劑，環(huán)氧固化劑等，目前不斷進行創(chuàng)新和服務(wù)改進，為客戶提供良好的產(chǎn)品和服務(wù)。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造化工良好品牌。江陰泉林秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實”的經(jīng)營理念，全力打造公司的重點競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1193588.html</p></div></div></div></div></div><div id="dxpmdfw" class="page-right twoColRt"><div id="afhzg2f" class="box01 margin10 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