海南M50固化劑廠商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(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="樹脂的固化度對制品性能的影響經(jīng)過理論和實(shí)踐測試表明：①、樹脂的固化度越高其彎曲強(qiáng)度及模量越大；②、樹脂的固化度越高其制品的耐腐蝕性越好；③、樹脂的固化度越高制品耐熱性能越好；④、拉伸強(qiáng)度和斷裂延伸率的比較大值出現(xiàn)在樹脂固化度為90%左右。U"><meta name="keywords" content="海南M50固化劑廠商,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" /> 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href="http://www.cdcfah.com/cp/first-_huagong/">化工</a>?<a href="http://www.cdcfah.com/cp/second-huagong_gyhwzx/">過氧化物</a>?<a href="http://www.cdcfah.com/cp/third-gyhwzx_qtgyhw/">其他過氧化物</a>?海南M50固化劑廠商歡迎來電江陰泉林化學(xué)品供應(yīng)</p><div id="hxn3rzb" class="leftbox clearfix"><h1>海南M50固化劑廠商歡迎來電江陰泉林化學(xué)品供應(yīng)</h1><div id="j7bpbjr" class="proBig"><div id="tr35zbp" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286280068066406/7446006.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3jrntj5" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286280068066406/7446006.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="llv5vjj" 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>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>海南M50固化劑廠商,固化劑</p><p><span>***更新：</span>2020-11-13 01:13:50</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="fvhrpz5" 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(jī): </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="3hbvl35" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="hpj3v33" class="box"><p><p> 樹脂的固化度對制品性能的影響 </p> <p> 經(jīng)過理論和實(shí)踐測試表明： </p> <p> ①、樹脂的固化度越高其彎曲強(qiáng)度及模量越大； </p> <p> ②、樹脂的固化度越高其制品的耐腐蝕性越好； </p> <p> ③、樹脂的固化度越高制品耐熱性能越好； </p> <p> ④、拉伸強(qiáng)度和斷裂延伸率的比較大值出現(xiàn)在樹脂固化度為 90%左右。 </p> <p> UPR 的固化是一個(gè)復(fù)雜的化學(xué)過程，受很多因素的影響，因此，無論是 UPR 生產(chǎn)廠家，還是應(yīng)用廠家都應(yīng)掌握一些 UPR 基本的固化常識(shí)，才能在安全生產(chǎn)、提高生產(chǎn)效率的基礎(chǔ)上，針對自身產(chǎn)品的特點(diǎn)，海南M50固化劑廠商，有效地解決實(shí)際生產(chǎn)中出現(xiàn)的各種問題，海南M50固化劑廠商。相信隨著應(yīng)用廠家對樹脂的固化常識(shí)的不斷深入了解，他們生產(chǎn)的產(chǎn)品質(zhì)量將會(huì)有質(zhì)的飛躍。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 在同樣成分下，海南M50固化劑廠商，大制件相對小制件熱損失少，溫升就較高。海南M50固化劑廠商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海南M50固化劑廠商,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286280068066406/7446006.png"></div><p> 不飽和樹脂固化過程的表觀特征變化 </p> <p> 不飽和聚酯樹脂的固化過程可分為三個(gè)階段，分別是： </p> <p> ①、凝膠階段（A 階段）：從加入固化劑、促進(jìn)劑以后算起，直到樹脂凝結(jié)成膠凍狀而失去流動(dòng)性的階段。該結(jié)段中，樹脂能熔融，并可溶于某些溶劑（如乙醇、**等）中。這一階段大約需要幾分鐘至幾十分鐘 </p> <p> <p> ②、硬化階段（B 階段）：從樹脂凝膠以后算起，直到變成具有足夠硬度，達(dá)到基本不粘手狀態(tài)的階段。該階段中，樹脂與某些溶劑（如乙醇、 **等）接觸時(shí)能溶脹但不能溶解，加熱時(shí)可以軟化但不能完全熔化。這一階段大約需要幾十分鐘至幾小時(shí)。 </p> <p> ③、熟化階段（C 階段）：在室溫下放置，從硬化以后算起，達(dá)到制品要求硬度，具有穩(wěn)定的物理與化學(xué)性能可供使用的階段。該階段中，樹脂既不溶解也不熔融。我們通常所指的后期固化就是指這個(gè)階段。這個(gè)結(jié)段通常是一個(gè)很漫長的過程。通常需要幾天或幾星期甚至更長的時(shí)間。 </p> 海南M50固化劑廠商一般為了使樹脂充分固化，固化成型后比較好進(jìn)行高溫后固化處理。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海南M50固化劑廠商,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286279982451172/4578712.png"></div><p style="text-indent:25px">1. 固化時(shí)無揮發(fā)性副產(chǎn)物，幾乎達(dá)**固化2. 固化迅速，即使常溫下也能固化3. 可用多種手段實(shí)現(xiàn)固化，如：過氧化物、紫外線、射線等。4. 可低壓成型，接觸壓成型5. 機(jī)械及電性能優(yōu)良6. 耐藥品性好7. 能賦于柔軟性、硬質(zhì)、耐候性、耐熱性、耐藥品性、觸變性、難燃、自熄等特征8. 可著色，獲得透明美觀的涂膜9. 能實(shí)現(xiàn)兼具保護(hù)與裝飾的涂裝10. 固化時(shí)放熱，使溫度上升，這一點(diǎn)可在冷模壓中獲得應(yīng)用。1. 空氣中的氧妨礙固化2. 收縮性大，一般有百分之幾的收縮率3. 硫磺、酚類化合物、碳混入時(shí)，固化困難4. 固化方法不當(dāng)時(shí)，由于固化放熱及收縮不理想，在制品中會(huì)產(chǎn)生裂紋。5. 固化易受溫度、濕度影響6. 制造后隨時(shí)間的推移其固化特性等也容易產(chǎn)生變化7. 可燃性差8. 是粘稠性液體，有特殊的刺激性味</p><p> 不飽和聚酯樹脂作為復(fù)合材料，在涂料、玻璃鋼、人造石、工藝品等領(lǐng)域，都已經(jīng)得到了較好的應(yīng)用。但不飽和樹脂的顏色黃變，一直是一個(gè)困擾生產(chǎn)廠家的問題。通常不飽和樹脂的黃變原因包括以下幾種： </p> <p> 1、不飽和樹脂酯化合成過程中，由于高溫引起的熱老化黃變，不飽和樹脂一般酯化溫度，為180～220℃甚至更高，在此溫度下樹脂很容易因熱老化而變黃，影響樹脂產(chǎn)品外觀； </p> <p> 2、樹脂接觸紫外線而引起的黃變，主要因素是樹脂中存在的苯環(huán)(包括芳香族二元酸/酐和苯乙烯引入的苯環(huán))，原因可能是芳香族化合物在高溫時(shí)發(fā)生熱氧降解，容易發(fā)生π→π軌道上的電子躍遷，使樹脂呈現(xiàn)黃色； </p> <p> 3、樹脂生產(chǎn)過程中，因裝置密封性不好等原因使原料接觸氧氣，通用不飽和聚酯分子鏈中不僅含有酯基、羥基、羧基，而且含有雙鍵和芳香環(huán)，微量氧能使其發(fā)生熱氧化降解，**明顯的表現(xiàn)就是樹脂顏色變黃。 </p> <p> 4、添加劑的影響如抗氧劑、阻聚劑、固化劑等，胺類抗氧劑易轉(zhuǎn)變成氮氧自由基而使制品著色，常用的阻聚劑，如對苯二酚，在微量氧存在時(shí)氧化為醌類，醌類本身帶有顏色，從而影響樹脂的顏色，固化劑有些廠家仍采用過氧化酰類-叔胺體系和過氧化酮類-金屬皂體系，由于叔胺和金屬皂都有顏色，容易使樹脂著色。 </p> <p> <br /> 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><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海南M50固化劑廠商,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286279900429688/2943002.png"></div><p> 一般促進(jìn)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(jìn)劑的情況下才能計(jì)算出），否則促進(jìn)劑與初級游離基的逆反速度會(huì)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(jìn)劑并不能達(dá)到加速固化的效果，反而會(huì)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% 連鎖交聯(lián)反應(yīng)不易進(jìn)行， **終導(dǎo)致長久的欠固化。海南M50固化劑廠商</p><p style="text-indent:25px">一般要求施工溫度不低于 15℃，相對濕度不大于 80%。海南M50固化劑廠商</p><p> 不飽和聚酯樹脂的固化是線性大分子通過交聯(lián)劑的作用，形成體型立體網(wǎng)絡(luò)過程，但是固化過程并不能消耗樹脂中全部活性雙鍵而達(dá)到完全的固化度。也就是說樹脂的固化度很難達(dá)到完全。其原因在于固化反應(yīng)的后期，體系粘度急劇增加而使分了擴(kuò)散受到阻礙的緣故。 </p> <p> 一般只能根據(jù)材料性能趨于穩(wěn)定時(shí)，便認(rèn)為是固化完全了。樹脂的固化程度對玻璃鋼性能影響很大。固化程度越高，玻璃鋼制品的力學(xué)性能和物理、化學(xué)性能得到充分發(fā)揮。（有人做過實(shí)驗(yàn)，對 UPR 樹脂固化后的不同階段進(jìn)行物理性能測試，結(jié)果表明，其彎曲強(qiáng)度隨著時(shí)間的增長而不斷增長，一直到一年后才趨于穩(wěn)定。而實(shí)際上，對于已經(jīng)投入使用的玻璃鋼制品，一年以后，由于熱、光等老化以及介質(zhì)的腐蝕等作用，機(jī)械性能又開始逐漸下降了。） </p> <p> 影響固化度的因素有很多，樹脂本身的組分，引發(fā)劑、促進(jìn)劑的量，固化溫度、后固化溫度和固化時(shí)間等都可以影響聚酯樹脂的固化度。 </p> <p> <br /> 海南M50固化劑廠商</p><p style="text-indent:25px">江陰泉林化學(xué)品有限公司是一家不飽和樹脂，乙烯基樹脂，環(huán)氧樹脂，玻纖纖維紗，玻纖纖維布，促進(jìn)劑，固化劑，脫模劑，脫模蠟，玻璃纖維氈，環(huán)氧固化劑，環(huán)氧樹脂色漿，樹脂色漿，樹脂膠衣，高溫固化劑，粒子引發(fā)劑，DTBP，以及樹脂配套類產(chǎn)品。的公司，致力于發(fā)展為創(chuàng)新務(wù)實(shí)、誠實(shí)可信的企業(yè)。公司自創(chuàng)立以來，投身于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(jìn)劑，環(huán)氧固化劑，是化工的主力軍。江陰泉林繼續(xù)堅(jiān)定不移地走高質(zhì)量發(fā)展道路，既要實(shí)現(xiàn)基本面穩(wěn)定增長，又要聚焦關(guān)鍵領(lǐng)域，實(shí)現(xiàn)轉(zhuǎn)型再突破。江陰泉林始終關(guān)注化工行業(yè)。滿足市場需求，提高產(chǎn)品價(jià)值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1963368.html</p></div></div></div></div></div><div id="v5plvnh" class="page-right twoColRt"><div id="vv5jrj3" class="box01 margin10 clearfix"><h3><a 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