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06:05:55</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="m8r328b" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">成都成英科技有限公司</a></p><p><span>聯(lián)系人：</span>何英</p><p><span>郵箱: </span>cykj789@sina.com</p><p><span>電話: </span>13558781838</p><p><span>傳真: </span>135_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>135-58781838</p><p><span>地址: </span>龍橋鎮(zhèn)山水村3組201號(hào)</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="gmawnjf" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="kepfgcj" class="box"><p><p style="text-indent:25px">甲苯二異氰酸酯（TDI）為無(wú)色有強(qiáng)烈刺鼻味的液體，沸點(diǎn)251°C，比重1.22，遇光變黑，對(duì)皮膚、眼睛有強(qiáng)烈刺激作用，并可引起濕疹與支氣管***，主要用于聚氨酯泡沫塑料、涂料、合成橡膠、絕緣漆、粘合劑等。根據(jù)其成分，甲苯二異氰酸酯屬含氮基的有機(jī)化合物，云南橡塑異氰酸酯隔熱組合料。二苯基甲烷二異氰酸酯（MDI）分為純MDI和粗MDI。純MDI常溫下為白色固體，加熱時(shí)有刺激臭味，云南橡塑異氰酸酯隔熱組合料，沸點(diǎn)196°C，主要用于聚氨酯硬泡沫塑料、合成纖維、合成橡膠、合成革，云南橡塑異氰酸酯隔熱組合料、粘合劑等。根據(jù)其成分，純二苯基甲烷二異氰酸酯也屬含氮基的有機(jī)化合物。還有非黃變型的1,6-己二異氰酸酯（HDI）。異氰酸酯膠能與木材生成化學(xué)鍵，賦于木材膠接制品很好的耐水和抗老化性能。云南橡塑異氰酸酯隔熱組合料</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南橡塑異氰酸酯隔熱組合料,異氰酸酯" src="https://tyunfile.71360.com/UploadFile/cdcykj/637281755141914062/2919879.png"></div><p style="text-indent:25px">合成:用伯胺與二硫化碳在堿性條件下發(fā)生加成，生成二硫代氨基甲酸鹽后，用對(duì)甲苯磺酰氯處理，可以生成異硫氰酸酯。規(guī)模:為滿足國(guó)家節(jié)能、環(huán)保和資源綜合利用要求，實(shí)現(xiàn)合理規(guī)模經(jīng)濟(jì)，新建MDI裝置單套起始規(guī)模必須達(dá)到30萬(wàn)噸/年及以上(改造或擴(kuò)建項(xiàng)目除外),新建TDI裝置單套起始規(guī)模必須達(dá)到15萬(wàn)噸/年及以上(改造或擴(kuò)建項(xiàng)目除外)。異氰酸酯部分生產(chǎn)裝置的反應(yīng)器、貯槽等在高溫、高壓下工作，存在著因設(shè)備腐蝕或密封件泄漏誘發(fā)中毒性事故和火災(zāi)事故等危險(xiǎn)，必須加強(qiáng)工藝過(guò)程、設(shè)備制造與維護(hù)、安全管理，以確保安全平穩(wěn)運(yùn)行。云南橡塑異氰酸酯隔熱組合料硝基化合物和一氧化碳反應(yīng) ,直接生成異氰酸酯.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南橡塑異氰酸酯隔熱組合料,異氰酸酯" src="https://tyunfile.71360.com/UploadFile/cdcykj/637281755567060547/4337758.png"></div><p> 聚氨酯噴涂是我們現(xiàn)在裝修建材設(shè)計(jì)使用過(guò)程中的比較熟悉的普遍的建材，現(xiàn)在生活水平的提高，我們對(duì)于聚氨酯噴涂的使用比較的熟悉，現(xiàn)在公司專(zhuān)業(yè)從事該行業(yè)，受到消費(fèi)者的認(rèn)可和關(guān)注，下面我們簡(jiǎn)單了解一下我們的聚氨酯噴涂的使用優(yōu)點(diǎn)：（1）對(duì)于各種形狀的基材，不論是平面、立面還是頂面，不論是圓形、球形還是其他不規(guī)則形狀的復(fù)雜物體，都可以直接實(shí)施噴涂發(fā)泡加工，不需昂貴的模具制造費(fèi)用；（2）噴涂發(fā)泡成型的泡沫保溫層的形狀與基材物體形狀一致；無(wú)接縫，絕熱效果好；泡沫層外部有一層致密的保護(hù)皮層，能較好地保護(hù)內(nèi)部芯材，同時(shí)還容易進(jìn)行外表面的涂料涂刷和進(jìn)一步修裝；（3）生產(chǎn)效率高，尤其適用于大面積、異形物體的絕熱處理，成型速度快，生產(chǎn)效率高。（4）粘結(jié)力:粘結(jié)能力強(qiáng),能在混凝土、磚石、木材、鋼材、瀝青、橡膠等表面粘結(jié)牢固;(5）導(dǎo)熱系數(shù):可達(dá)到、玻璃棉、聚苯板、擠塑板等建筑保溫隔熱材料;上述，我們簡(jiǎn)單了解到我們的聚氨酯噴涂的使用優(yōu)點(diǎn)，我公司專(zhuān)業(yè)生產(chǎn)和使用該產(chǎn)品，在生產(chǎn)和使用過(guò)程中安全我，我們的產(chǎn)品質(zhì)量好，受到客戶(hù)的喜愛(ài)程度高，客戶(hù)使用非常的滿意，歡迎致電咨詢(xún)！ </p><p> 異氰酸酯是異氰酸的各種酯的總稱(chēng)。若以-NCO基團(tuán)的數(shù)量分類(lèi)，包括單異氰酸酯R-N=C=O和二異氰酸酯O=C=N-R-N=C=O及多異氰酸酯等。常見(jiàn)的二異氰酸酯包括甲苯二異氰酸酯(TDI)、異佛爾酮二異氰酸酯(IPDI)、二苯基甲烷二異氰酸酯(MDI)、二環(huán)己基甲烷二異氰酸酯(HMDI)、六亞甲基二異氰酸酯(HDI)、賴(lài)氨酸二異氰酸酯(LDI)。異氰酸酯用途：?jiǎn)萎惽杷狨ナ怯袡C(jī)合成的重要中間體，可制成一系列氨基甲酸酯類(lèi)殺蟲(chóng)劑、殺菌劑、除草劑，也用于改進(jìn)塑料、織物、皮革等的防水性。二官能團(tuán)及以上的異氰酸酯可用于合成一系列性能優(yōu)良的聚氨酯泡沫塑料、橡膠、彈力纖維、涂料、膠粘劑、合成革、人造木材等。異氰酸酯部分生產(chǎn)裝置的反應(yīng)器、貯槽等在高溫、高壓下工作。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南橡塑異氰酸酯隔熱組合料,異氰酸酯" src="https://tyunfile.71360.com/UploadFile/cdcykj/637281755466474609/4684362.png"></div><p> 異氰酸酯與水的反應(yīng):2RNCO + H2O → RNHCONHR + CO2↑1個(gè)水分子與2個(gè)NCO基團(tuán)反應(yīng)得到取代脲，水可以看做一種擴(kuò)鏈劑或固化劑。這點(diǎn)對(duì)聚氨酯的生產(chǎn)及儲(chǔ)存具有重要的指導(dǎo)意義。原材料和產(chǎn)品都需要嚴(yán)格控制水分含量。反應(yīng)放出二氧化碳?xì)怏w，可用在聚氨酯泡沫的生產(chǎn)中，還有濕固化的聚氨酯膠黏劑和涂料。 </p> <p> 異氰酸酯與胺基的反應(yīng):RNCO + R′N(xiāo)H2 → RNHCONHR′ RNCO + R′N(xiāo)HR〞 → RNHCONR′R〞脂肪族伯胺反應(yīng)速度太快，一般很少用。脂肪族仲胺和芳香族伯胺反應(yīng)速度稍慢，常用來(lái)固化NCO封端的預(yù)聚體。MOCA、E-300、unilink4200等; 與羥基化合物的反應(yīng):如與多元醇、聚醚、聚酯酰胺、蓖麻油等含活性羥基化合物反應(yīng)生成氨甲基酸酯。云南橡塑異氰酸酯隔熱組合料</p><p style="text-indent:25px">用于合成橡膠、彈力纖維、涂料、膠粘劑、合成革、人造木材等。云南橡塑異氰酸酯隔熱組合料</p><p style="text-indent:25px">硝基還原羰基化法硝基化合物同樣能在一氧化碳和醇類(lèi)環(huán)境中通過(guò)Pd或Rh的催化生成氨基甲酸酯。ChemicalbookRNO2+3CO+CH3OH→RNHCOOCH3+2CO2RNHCOOCH3→RNCO+CH3OH此外,亦可將氨基氧化羰化和硝基還原羰化集成一步完成。RNO2+3CO+RNH2+3CH3OH→2RNHCOOCH3+CO2+H2Oc.碳酸二甲酯法此法實(shí)質(zhì)上與上述兩種方法類(lèi)似,只是先進(jìn)行羰基化過(guò)程,再引入將甲氧羰基基團(tuán)。RNH2+CH3OCOOCH3→RNHCOOCH3該反應(yīng)的優(yōu)點(diǎn)是反應(yīng)污染小、反應(yīng)收率高、反應(yīng)條件溫和且催化劑價(jià)格低廉易得,只是催化劑的回收和產(chǎn)物的分離困難限制了其在工業(yè)上的大規(guī)模應(yīng)用。云南橡塑異氰酸酯隔熱組合料</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3076490.html</p></div></div></div></div></div><div id="vfk3dv8" class="page-right twoColRt"><div id="yjkwgde" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="cb3pykb" class="recomPic 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