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class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286279950800781/5664313.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ym7gnuw" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286279950800781/5664313.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ge7og8i" 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>溫州樹脂與固化劑地坪廠家,固化劑</p><p><span>***更新：</span>2020-06-30 09:18:19</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="3993np3" 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(hào)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="iwy7yf8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="zsuw78k" class="box"><p><p> 不飽和聚酯樹脂（UPR）的固化似乎是從理論和實(shí)踐上已研究得十分透徹的問題，但是因?yàn)橛绊懝袒磻?yīng)的因素相當(dāng)復(fù)雜，而在UPR的各種應(yīng)用領(lǐng)域中，制品所出現(xiàn)的質(zhì)量瑕疵在很大程度上幾乎都與“固化”有關(guān)，溫州樹脂與固化劑地坪廠家。所以，我們有對(duì) UPR 的固化進(jìn)行較深入探討的必要。（探討不飽和聚酯樹脂的固化，溫州樹脂與固化劑地坪廠家，首先應(yīng)該了解與不飽和聚酯樹脂固化有關(guān)的一些概念和定義） </p> <p> 與不飽和聚酯樹脂固化有關(guān)的概念和定義 </p> <p> 1 固化的定義 </p> <p> 液態(tài) UPR 在光、熱或引發(fā)劑的作用下可以通過線型聚酯鏈中的不飽和雙鍵與交聯(lián)單體的雙鍵的結(jié)合，形成三向交聯(lián)的不溶不熔的體型結(jié)構(gòu)。這個(gè)過程稱為 UPR 的固化。 </p> <p> 2固化劑 </p> <p> 不飽和聚酯樹脂的固化是游離基引發(fā)的共聚合反應(yīng)，如何能使反應(yīng)啟動(dòng)是問題的關(guān)鍵。單體一旦被引發(fā)，溫州樹脂與固化劑地坪廠家，產(chǎn)生游離基，分子鏈即可以迅速增長(zhǎng)而形成三向交聯(lián)的大分子。 </p> <p> 不飽和聚酯樹脂固化的啟動(dòng)是首先使不飽和 C—C 雙鍵斷裂，由于化學(xué)鍵發(fā)生斷裂所需的能量不同，對(duì)于 C—C 鍵，其鍵能 E=350kJ/mol，需 350-550℃的溫度才能將其激發(fā)裂解。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 在同樣成分下，大制件相對(duì)小制件熱損失少，溫升就較高。溫州樹脂與固化劑地坪廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="溫州樹脂與固化劑地坪廠家,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286279950800781/5664313.png"></div><p style="text-indent:25px">玻璃鋼/人造石廠目前頭疼的問題就是如何降低生產(chǎn)車間里面的味道，通過收集進(jìn)行活性炭處理是比較早采用的比較好的方法，但是這種方法已經(jīng)越來越不被地方環(huán)保部門認(rèn)可。要想徹底解決這個(gè)問題，采用RTO焚燒爐對(duì)有機(jī)廢氣進(jìn)行焚燒處理是一種比較現(xiàn)實(shí)的方法，但是這個(gè)過程中大量的燃料被耗費(fèi)在燃燒空氣之中，產(chǎn)生大量無端消耗，增加了環(huán)保處理成本。能否有新的技術(shù)路徑，既能保證對(duì)有機(jī)廢氣的徹底處理，同時(shí)又能減少燃?xì)庀?，降低處理成本。浙江玻璃鋼固化劑用量否則促進(jìn)劑與初級(jí)游離基的逆反速度會(huì)大于初級(jí)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="溫州樹脂與固化劑地坪廠家,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286280245830078/9671124.png"></div><p> 固化劑、促進(jìn)劑加入樹脂后產(chǎn)生大量氣泡，低反應(yīng)活性或阻聚劑含量高的樹脂現(xiàn)象尤明顯。 </p> <p> 夏季氣溫升高，起泡現(xiàn)象更為嚴(yán)重。 </p> <p> 這是由于固化劑中的過氧化氫快速分解，未能與樹脂及時(shí)反應(yīng)引起的。 </p> <p> UPR 的固化屬于自由基共聚合反應(yīng)。固化反應(yīng)具有鏈引發(fā)、鏈增長(zhǎng)、鏈終止、鏈轉(zhuǎn)移四個(gè)游離基反應(yīng)的特點(diǎn)。 </p> <p> 鏈引發(fā)——從過氧化物引發(fā)劑分解形成游離基到這種游離基加到不飽和基團(tuán)上的過程。 </p> <p> 鏈增長(zhǎng)——單體不斷地加合到新產(chǎn)生的游離基上的過程。與鏈引發(fā)相比，鏈增長(zhǎng)所需的活化能要低得多。 </p> <p> 鏈終止——兩個(gè)游離基結(jié)合，終止了增長(zhǎng)著的聚合鏈。 </p> <p> 鏈轉(zhuǎn)移——一個(gè)增長(zhǎng)著的大的游離基能與其他分子，如溶劑分子發(fā)生作用，使原來的活性鏈消失成為穩(wěn)定的大分子，同時(shí)原來不活潑的分子變?yōu)橛坞x基。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p><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(zhǎng)期接觸脂肪多元胺會(huì)引起皮炎，它們的蒸汽毒性很強(qiáng)，操作時(shí)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(shí)+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(qiáng)度1000-1160kg/cm2，抗壓強(qiáng)度1120kg/cm2，抗拉強(qiáng)度780kg/cm2，伸長(zhǎng)率5.5%，沖擊強(qiáng)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、適用期短鏈引發(fā)——從過氧化物引發(fā)劑分解形成游離基到這種游離基加到不飽和基團(tuán)上的過程。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="溫州樹脂與固化劑地坪廠家,固化劑" src="https://tyunfile.71360.com/WaterMark/UploadFile/Jyquanlin/637286280191572266/1979418.png"></div><p> 不飽和聚酯樹脂的固化，是指樹脂從液態(tài)轉(zhuǎn)變?yōu)楣虘B(tài)的過程，這是用不飽和聚酯樹脂制造產(chǎn)品的必經(jīng)過程。這個(gè)過程可以在加熱加壓下完成，也可以在不經(jīng)加熱的情況下完成（冷固化）。從表面上看，是從可流動(dòng)的液體變成堅(jiān)硬的固體，但從化學(xué)上看，是從線型分子結(jié)構(gòu)轉(zhuǎn)變成體型分子結(jié)構(gòu)的過程。 </p> <p> 常用的不飽和聚酯樹脂主要由線型不飽和樹脂和活性單體（一般是苯乙烯）兩部分組成。兩者都含有不飽和鍵，在一定的條件下（例如加入過氧化物引發(fā)劑、加熱、受紫外線照射等），就能進(jìn)行自由基共聚和反應(yīng)。這種反應(yīng)實(shí)在按照鏈引發(fā)、鍵增長(zhǎng)和鏈終止的歷程進(jìn)行的。在這一過程中伴隨著熱量的放出，液體樹脂的粘度迅速增大，硬度提高，**終變成了既不溶解也不熔融的固體。根據(jù)需要在成型過程中可以加入增強(qiáng)材料如玻璃纖維，也可以不加增強(qiáng)材料，只加（或不加）不同的填料，前者即得到我們通常所說的玻璃鋼，后者可以制成人造大理石，人造瑪瑙等制品或作為表面涂層使用樹脂的固化度越高制品耐熱性能越好。溫州bpo固化劑的價(jià)格</p><p style="text-indent:25px">苯乙烯與聚酯分子之間的反應(yīng)。溫州樹脂與固化劑地坪廠家</p><p> 鄰甲苯二胺、間甲苯二胺和二氨基二苯基甲烷混合物它們比例為26：14：60時(shí)，在23℃48小時(shí)不析出，與環(huán)氧樹脂在23℃時(shí)45分鐘凝膠。 </p> <p> 二氨基二苯基甲烷及異佛爾酮二胺混合物 40-30%DDM與60-70%IPDA混合熔融，在常溫下呈液態(tài)。當(dāng)40%DDM與60%IPDA混合時(shí)每100份標(biāo)準(zhǔn)樹脂用25份混合物，熱變形溫度130-155℃理學(xué) 抗彎強(qiáng)度1160kg/cm2，介電常數(shù)（50赫23℃）3.4 功率因數(shù)（50赫23℃）0.012苯酮四羧酸二酐 BTDA 熔點(diǎn)227℃ 每100份標(biāo)準(zhǔn)樹脂用27-48份固化：150-200℃24小時(shí)。熱變形溫度240-290℃ 抗彎強(qiáng)度560-700Kg/cm2 沖擊強(qiáng)度1.0-2.7Kg-cm/cm2 洛氏硬度100-117 </p> <p> <br /> 溫州樹脂與固化劑地坪廠家</p><p style="text-indent:25px">江陰泉林化學(xué)品有限公司位于江蘇省無錫市，注冊(cè)資本200-300萬元，旗下?lián)碛?~10人***專業(yè)的員工。泉林是江陰泉林化學(xué)品有限公司的主營(yíng)品牌，是專業(yè)的不飽和樹脂，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。公司，擁有自己**的技術(shù)體系。我公司擁有強(qiáng)大的技術(shù)實(shí)力，多年來一直專注于不飽和樹脂，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。的發(fā)展和創(chuàng)新，打造高指標(biāo)產(chǎn)品和服務(wù)。江陰泉林化學(xué)品有限公司主營(yíng)業(yè)務(wù)涵蓋[ "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" 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