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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>浙江環(huán)氧樹脂與固化劑哪種好,固化劑</p><p><span>***更新：</span>2020-07-02 04:21:26</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="i2lnnj2" 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="ru3xiud" class="page-proshow02"><p class="title">詳細說明</p><div id="omkvw3t" class="box"><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*含有酯基、羥基，浙江環(huán)氧樹脂與固化劑哪種好、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，在微量氧存在時氧化為醌類，浙江環(huán)氧樹脂與固化劑哪種好，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，浙江環(huán)氧樹脂與固化劑哪種好，由于叔胺和金屬皂都有顏色，容易使樹脂著色。 </p> <p> <br /> 聚酯分子與聚酯分子之間的反應(yīng)。浙江環(huán)氧樹脂與固化劑哪種好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江環(huán)氧樹脂與固化劑哪種好,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286280245830078/9671124.png"></div><p> 桐油酸酐 308 液體每100份標準樹脂用100-200份 </p> <p> 甲基六氫鄰苯二甲酸酐 MHHPA液體每100份標準樹脂用70-80份固化：80℃4小時+120℃4小時 </p> <p> 乙二醇雙偏苯三酸酐酯 TME 粘度:102cps 每100份標準樹脂用56份固化：150℃1小時+180℃4小時，使用期3-4天。 </p> <p> 鄰苯二甲酸酐 PA HT901EPA DQ19121 白色粉末熔點128℃每100份標準樹脂用30-40份固化：100-200℃12-6小時，使用期長。熱變形溫度110-152℃ 抗彎強度1120Kg/cm2 抗壓強度1550Kg/cm2 抗拉強度830Kg/cm2 伸長率4.8% 沖擊強度2.5Kg-cm/cm2 洛氏硬度100 介電常數(shù)（50Hz23℃）3.64 功率因數(shù)（50Hz23℃）0.007 </p> <p> 偏苯三酸酐 TMA 白色粉末熔點168℃每100份標準樹脂用30-35份固化：150℃1小時+180℃4小時。揚州環(huán)氧樹脂和固化劑地坪施工這一點對于耐腐蝕用途的樹脂固化尤為重要。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江環(huán)氧樹脂與固化劑哪種好,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637281088415224610/3058979.png"></div><p> 回彈法 </p> <p> 回彈法是把小鋼球從一定高度落向被測固化樹脂表面，由于固化程度不同，樹脂的剛性是不同的，所以回彈高度亦不同，回彈高度可表明固化程度。 </p> <p> 測成型制品中的不可溶物含量，即用**來萃取出樹脂中的可溶性成分，從而得到不可溶物含量。此法也適用于環(huán)氧或酚醛 FRP，是目前用得比較多的方法。其原理是樹脂固化前是線型分子、易溶于有機溶劑，而固化后變成體型網(wǎng)狀結(jié)構(gòu)、難溶于有機溶劑的特點，采取有機溶劑萃取出已固化樹脂中的可溶組份，再根據(jù)玻璃鋼試樣在萃取前后的重量差進行計算，以此間接地說明固化程度。 </p><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℃。）拉伸強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><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江環(huán)氧樹脂與固化劑哪種好,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286280025732422/7457225.png"></div><p> 活性氧含量簡單來說就是過氧化物中氧和過氧化物分子總量的百分比。 </p> <p> 從這個概念本身來說，一個具有較低的分子量的過氧化物的活性氧含量可能相對較高。但這并不意味著活性氧含量高的過氧化物比活性氧含量低的過氧化物具有更多或更快的活性。（因為我們很多應(yīng)用廠家是用活性氧含量作為考核固化劑的一個指標）事實上，活性氧含量**是作為一個恒量任何一個特定的過氧化物的濃度和純度的一個尺度。人們發(fā)現(xiàn)許多具有較高的活性氧含量的過氧化物并不適合用于固化樹脂，因為它們在標準的固化溫度下會很快地分解或“耗盡”，也就是它分解游離基的速度過快。由于游離基總是有一種彼此間相互結(jié)合的強烈傾向，當游離基產(chǎn)生的速度比它們被不飽和雙鍵利用的速度快時，它們會重新組合或者終止聚合鏈，從而產(chǎn)生低分子量的聚合物而導(dǎo)致不完全固化的結(jié)果。（典型的例子就是過氧化氫）。環(huán)境溫度較高條件下可適當減少促進劑的加入量，以得到足夠長的凝膠時間和較完全的固化程度。揚州環(huán)氧樹脂和固化劑地坪施工</p><p style="text-indent:25px">對于大面積噴涂成型，可能因為交聯(lián)劑的揮發(fā)而導(dǎo)致交聯(lián)劑不足也要適當增加促進劑固化劑的量以縮短凝膠時間。浙江環(huán)氧樹脂與固化劑哪種好</p><p> 二氨基環(huán)已烷 DAHM （NH2）2 C6H4 分子量112 無色液體活潑氫當量28 每100份標準樹脂用14-16份固化常溫7天、70℃、2小時。 </p> <p> 二氨甲基環(huán)已基甲烷 DAMHM C-260 [（NH2）（CH3）C6H4 ]2CH2 分子量232活潑氫當量58 無色液體每100份標準樹脂用33份固化80℃2小時+150℃2小時熱變形溫度130-150℃抗彎強度1070kg/cm2，抗張強度770 kg/cm2，介電常數(shù)（50赫23℃）4.0 功率因數(shù)（50赫23℃）0.005體積電阻大於2x1016Ω.cm </p> <p> 二氨基環(huán)已基甲烷 DACHM [（NH2）C6H4 ]2CH2 分子量206 活潑氫當量51.5 熔點40℃ 每100份標準樹脂用30份固化60℃3小時+150℃2小時。 </p> <p> <br /> 浙江環(huán)氧樹脂與固化劑哪種好</p><p style="text-indent:25px">江陰泉林化學(xué)品有限公司致力于化工，以科技創(chuàng)新實現(xiàn)***管理的追求。公司自2019-03-01成立以來，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", "固化劑促進劑，環(huán)氧固化劑" ]，是化工的主力軍。公司終堅持自主研發(fā)創(chuàng)新發(fā)展理念，不斷優(yōu)化的技術(shù)、產(chǎn)品為客戶帶來效益，目前年營業(yè)額達到1000-2000萬元。江陰泉林始終關(guān)注自身，在風(fēng)云變化的時代，我們對自身的建設(shè)毫不懈怠，高度的專注與執(zhí)著使我們在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/465323.html</p></div></div></div></div></div><div id="jstaqhi" class="page-right twoColRt"><div id="nws8w73" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="cvciopg" 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="7jee2ip" class="recomPic 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