上海POM銷售貼心服務(wù) 蘇州晶塑米新材料供應(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="簡介：縮醛聚合物即聚甲醛是由甲醛聚合形成的，它也常稱做聚氧亞甲基(POM)。由甲醛來制備聚合物早在20世紀(jì)20年代就被研究過，但是直到l950年杜邦開發(fā)出Delrin(戴林)以前尚來制得熱穩(wěn)定的材料。均聚物是用非常純的甲醛經(jīng)陰離子聚合制得。"><meta name="keywords" content="上海POM銷售,POM"><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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class="proBig"><div id="aoociwk" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288163318668/8954645.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="uaqw0ay" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288163318668/8954645.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="o2ckqw4" 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>上海POM銷售,POM</p><p><span>***更新：</span>2021-02-05 01:16:05</p><p><span id="click" >瀏覽次數(shù)：8次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="cq2iges" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">蘇州晶塑米新材料有限公司</a></p><p><span>聯(lián)系人：</span>李麗</p><p><span>郵箱: </span>321260043@qq.com</p><p><span>電話: </span>15162619982</p><p><span>傳真: </span>151_</p><p><span>網(wǎng)址: </span>http://szjingsumi.shop.88360.com</p><p><span>手機(jī): </span>151-62619982</p><p><span>地址: </span>陸家鎮(zhèn)陸豐東路3號(hào)仕泰隆模具城17-8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="gec2meu" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ci4qoua" class="box"><p><p style="text-indent:25px">簡介：縮醛聚合物即聚甲醛是由甲醛聚合形成的，它也常稱做聚氧亞甲基(POM)。由甲醛來制備聚合物早在20世紀(jì)20年代就被研究過，但是直到l950年杜邦開發(fā)出Delrin (戴林)以前尚來制得熱穩(wěn)定的材料。均聚物是用非常純的甲醛經(jīng)陰離子聚合制得。形成的聚合物是不溶的。隨著聚合反應(yīng)的進(jìn)行不斷析出，上海POM銷售。隨著甲醛選出縮醛樹脂被拉開，于是發(fā)生了熱降解，上海POM銷售。聚合物的熱穩(wěn)定性可通過端羥基與**的酯化來提高，上海POM銷售。改善熱穩(wěn)定性的另一個(gè)方法是與第二單體：如環(huán)氧乙烷等共聚，其聚物是按陽離子聚合法制備的。聚甲醛是強(qiáng)而硬且有良好疲勞性和熱穩(wěn)定性的熱塑(性)塑料。上海POM銷售</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海POM銷售,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288163318668/8954645.png"></div><p style="text-indent:25px">理化性質(zhì): 聚甲醛是一種沒有側(cè)鏈，高密度，高結(jié)晶性的線性聚合物，具有優(yōu)異的綜合性能。聚甲醛是一種表面光滑，有光澤的硬而致密的材料，淡黃或白色，可在-40-100°C溫度范圍內(nèi)長期使用。它的耐磨性和自潤滑性也比絕大多數(shù)工程塑料優(yōu)越，又有良好的耐油，耐過氧化物性能。很不耐酸，不耐強(qiáng)堿和不耐太陽光紫外線的輻射。聚甲醛的拉伸強(qiáng)度達(dá)70MPa，吸水性小，尺寸穩(wěn)定，有光澤，這些性能都比尼龍好，聚甲醛為高度結(jié)晶的樹脂，在熱塑性樹脂中是zui堅(jiān)韌的。具抗熱強(qiáng)度，彎曲強(qiáng)度，耐疲勞性強(qiáng)度均高，耐磨性和電性能優(yōu)良。上海進(jìn)口POM廠商聚甲醛生產(chǎn)技術(shù)是以三聚甲醛與二氧五環(huán)（或環(huán)氧乙烷）為單體。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海POM銷售,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387287884734903/8623844.png"></div><p style="text-indent:25px">聚甲醛注射過程中應(yīng)注意哪些事項(xiàng)：物料過熱（超過240℃)或受熱時(shí)間過長，容易分解,產(chǎn)生相當(dāng)量的甲醛。部分甲醛將進(jìn)而氧化成甲酸，并引起大量甲醛氣體的產(chǎn)生，嗆人、流淚、咳嗽，甚至可能引起傷人。操作上應(yīng)切實(shí)予以注意： (1) 盡量采用低的料筒溫度和噴嘴溫度； (2) 先將料筒溫度升至150℃ ,等15min后再升至正常加工溫度； (3) 發(fā)現(xiàn)分解的預(yù)兆后，馬上對空注出巳分解的物料，分析原因，采取措施； (4) 停車前15min,停止料筒加熱，注出料筒內(nèi)的物料。料筒內(nèi)應(yīng)不留大量剩料； (5) 其他原料更換為聚甲醛時(shí)，除了加工溫度比聚甲醛低的物料或者與聚甲醛相近的物料，必須用聚乙烯清洗過渡； (6) 要經(jīng)常檢查溫度控制系統(tǒng)及各部的溫度。物料分解是有預(yù)兆的： ① 有強(qiáng)烈的甲醛剌激性氣味； ② 熔體有棕黃色條紋或制品有毛斑； ③ 熔體氣泡，并有"嘶嘶"聲而且冒煙。 </p><p style="text-indent:25px">聚甲醛材料物理性質(zhì)：聚甲醛是高聚物，其結(jié)晶度相對較高，它的綜合力學(xué)性比起其它的塑料要好很多，比如它具有很高的強(qiáng)度、很高的硬度，其彈性模量更是比一般塑料大很多，它具有與金屬材料很接近的比強(qiáng)度和比剛度；聚甲醛材料的沖擊強(qiáng)度和疲勞強(qiáng)度相對較高、并擁有不錯(cuò)的耐磨性。聚甲醛材料結(jié)構(gòu)：按其合成方法，聚甲醛樹脂有均聚甲醛和共聚甲醛兩種類型。均聚甲醛以均聚合成方法制成，共聚甲醛以共聚合成方法制成，它們的分子結(jié)構(gòu)雖然均為線性結(jié)構(gòu)，但略微的有所區(qū)別。由于分子結(jié)構(gòu)不同，所以性能不同。兩者材料相比，均聚甲醛的密度更大，熔點(diǎn)更**度更好，但熱穩(wěn)定性和耐酸堿能力要比共聚甲醛材料的差；初次之外共聚甲醛熱穩(wěn)定性要好很多，并且易于成型，因而共聚甲醛發(fā)展相對均聚甲醛發(fā)展的要快。聚甲醛具抗熱強(qiáng)度，彎曲強(qiáng)度，耐疲勞性強(qiáng)度均高，耐磨性和電性能優(yōu)良。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海POM銷售,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288132771805/7721743.png"></div><p style="text-indent:25px">聚甲醛注射過程中應(yīng)注意哪些事項(xiàng)：物料過熱（超過240℃)或受熱時(shí)間過長，容易分解,產(chǎn)生相當(dāng)量的甲醛。部分甲醛將進(jìn)而氧化成甲酸，并引起大量甲醛氣體的產(chǎn)生，嗆人、流淚、咳嗽，甚至可能引起傷人。操作上應(yīng)切實(shí)予以注意：(1)盡量采用低的料筒溫度和噴嘴溫度；(2)先將料筒溫度升至150℃,等15min后再升至正常加工溫度；(3)發(fā)現(xiàn)分解的預(yù)兆后，馬上對空注出巳分解的物料，分析原因，采取措施；(4)停車前15min,停止料筒加熱，注出料筒內(nèi)的物料。料筒內(nèi)應(yīng)不留大量剩料；(5)其他原料更換為聚甲醛時(shí)，除了加工溫度比聚甲醛低的物料或者與聚甲醛相近的。聚甲醛以共聚合成方法制成，它們的分子結(jié)構(gòu)雖然均為線性結(jié)構(gòu)，但略微的有所區(qū)別。高流動(dòng)性POM報(bào)價(jià)</p><p style="text-indent:25px">聚甲醛它電具有低的摩擦系數(shù)和良好的耐熱性以認(rèn)為縮醛樹脂類似于尼龍。上海POM銷售</p><p style="text-indent:25px">特點(diǎn)：POM為乳白色不透明結(jié)晶性線性熱塑性樹脂，具有良好的綜合性能和著色性，具有較高的彈性模量，很高的剛性和硬度，比強(qiáng)度和比剛性接近于金屬；拉伸強(qiáng)度，彎曲強(qiáng)度，耐蠕變性和耐疲勞性優(yōu)異，耐反復(fù)沖擊，去載回復(fù)性優(yōu)；摩擦系數(shù)小，耐磨耗，尺寸穩(wěn)定性好，表面光澤好，有較高的粘彈性，電絕緣性優(yōu)，且不受溫度影響；耐絕緣性好且不受濕度影響；耐化學(xué)藥品性優(yōu)：除了強(qiáng)酸、酚類和有機(jī)鹵化物外，對其他化學(xué)品穩(wěn)定，耐油；機(jī)械性能受溫度影響小，具有較高的熱變形溫度。缺點(diǎn)是阻燃性較差，遇火徐徐燃燒，氧指數(shù)小，即使添加阻燃劑也得不到滿意的要求，另外耐候性不理想，室外應(yīng)用要添加穩(wěn)定劑。上海POM銷售</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3163968.html</p></div></div></div></div></div><div id="4s0mkie" class="page-right twoColRt"><div id="wmuky2a" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ciyowus" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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