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昆山雙贏塑化供應(yīng)</h1><div id="7nlrfvr" class="proBig"><div id="tj7rhvb" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sysh888/637359314140361328/3166988.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="zx7bpvt" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sysh888/637359314140361328/3166988.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="pl5rfbz" 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>杭州耐高溫聚甲醛POM原料什么價(jià)格,聚甲醛POM原料</p><p><span>***更新：</span>2021-01-10 02:15:35</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="rhnlbh9" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">昆山雙贏塑化有限公司</a></p><p><span>聯(lián)系人：</span>陳田</p><p><span>郵箱: </span>1047570731@qq.com</p><p><span>電話: </span>15950904476</p><p><span>傳真: </span>0512_</p><p><span>網(wǎng)址: </span>http://sysh888.shop.88360.com</p><p><span>手機(jī): </span>0512-15950904</p><p><span>地址: </span>昆山市東城大道龍城國(guó)際9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="fxvlb9n" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="7bzfvtr" class="box"><p><p style="text-indent:25px">聚甲醛POM原料可作工程材料和代替金屬制造機(jī)器零部件等的塑料。聚甲醛POM原料具有優(yōu)良的綜合性能，剛性大，蠕變小，杭州耐高溫聚甲醛POM原料什么價(jià)格，機(jī)械強(qiáng)度高，耐熱性好，杭州耐高溫聚甲醛POM原料什么價(jià)格，電絕緣性好，可在較苛刻的化學(xué)、物理環(huán)境中長(zhǎng)期使用，可替代金屬作為工程結(jié)構(gòu)材料使用，但價(jià)格較貴，產(chǎn)量較小。聚甲醛POM原料又可分為通用聚甲醛POM原料和特種聚甲醛POM原料兩類(lèi)。前者主要品種有聚酰胺、聚碳酸酯、聚甲醛、改性聚苯醚和熱塑性聚酯五大通用聚甲醛POM原料；后者主要是指耐熱達(dá)150℃以上的聚甲醛POM原料，主要品種有聚酰亞胺、聚苯硫醚、聚砜類(lèi)、芳香族聚酰胺，杭州耐高溫聚甲醛POM原料什么價(jià)格、聚芳酯、聚苯酯、聚芳醚酮、液晶聚合物和氟樹(shù)脂等。聚甲醛POM原料板具有優(yōu)良工業(yè)化學(xué)品的特性。杭州耐高溫聚甲醛POM原料什么價(jià)格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="杭州耐高溫聚甲醛POM原料什么價(jià)格,聚甲醛POM原料" src="https://tyunfile.71360.com/UploadFile/sysh888/637359314140361328/3166988.png"></div><p style="text-indent:25px">聚甲醛POM原料常用表面處理：（1）水鍍，需要使用電鍍級(jí)聚甲醛POM原料，其他聚甲醛POM原料水鍍效果不優(yōu)良。（2）真空鍍。（3）噴油，能?chē)姵龈鞣N顏色、各種效果。（4）絲印、移印、燙金等。聚甲醛POM原料使用范圍：機(jī)器外殼、家電制品、日用生活外殼、電子產(chǎn)品外殼等。聚甲醛POM原料模具注塑常用收縮率：模具注塑常用收縮率為0.5%。聚甲醛POM原料注塑工藝條件：（1）干燥處理：聚甲醛POM原料材料具有吸濕性，要求在加工之前進(jìn)行干燥處理。建議干燥條件為80~90℃下起碼干燥2H。（2）熔化溫度：210~280℃：建議溫度：240℃。（3）模具溫度：25~70℃（模具溫度將影響塑件粗糙度，溫度較低則導(dǎo)致粗糙度較高）。（4）注塑壓力：500~1000bar。（5）注塑速度：中高速度。杭州耐高溫聚甲醛POM原料什么價(jià)格聚甲醛POM原料黏流溫度在160℃左右。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="杭州耐高溫聚甲醛POM原料什么價(jià)格,聚甲醛POM原料" src="https://tyunfile.71360.com/UploadFile/sysh888/637359314073945313/5556771.png"></div><p style="text-indent:25px">聚甲醛POM原料有較高的粘彈性，電絕緣性?xún)?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?xún)?yōu)：除了強(qiáng)酸、酚類(lèi)和有機(jī)鹵化物外，對(duì)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。聚甲醛POM原料結(jié)晶度高，機(jī)械強(qiáng)度、剛性、熱變形溫度等比共聚甲醛POM原料好，共聚甲醛POM原料熔點(diǎn)低，熱穩(wěn)定性，耐化學(xué)腐蝕性，流動(dòng)特性，加工性均優(yōu)于聚甲醛原料。</p><p style="text-indent:25px">聚甲醛POM原料制品在加工中容易產(chǎn)生內(nèi)應(yīng)力，內(nèi)應(yīng)力的大小可以通過(guò)將制品浸入冰醋酸中來(lái)檢驗(yàn)；如果內(nèi)應(yīng)力太大，或者制品要求一定不能有應(yīng)力開(kāi)裂現(xiàn)象，那就應(yīng)該進(jìn)行退火處理，具體方法是：將制品放在70～80℃的熱風(fēng)循環(huán)干燥箱中2～4小時(shí)，再冷卻到室溫即可。聚甲醛POM原料的熱穩(wěn)定性較好，但在265℃下，物料在料筒中的停留時(shí)間不應(yīng)超過(guò)5～6min；而在280℃時(shí)，物料在料筒中的停留時(shí)間則不應(yīng)超過(guò)2～3min；如果生產(chǎn)過(guò)程中出現(xiàn)意外，應(yīng)當(dāng)先把料筒溫度降低到120℃，然后再清理料筒。有些聚甲醛POM原料制品在剛生產(chǎn)出來(lái)時(shí)并無(wú)問(wèn)題，但是可能會(huì)在儲(chǔ)存期內(nèi)產(chǎn)生褐色或者黃色條紋，這可能是由于料筒過(guò)熱或者滯留時(shí)間過(guò)長(zhǎng)而引起的。聚甲醛POM原料可加工周期短可以用于薄壁部分達(dá)到0.1毫米的零件而沒(méi)有飛邊。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="杭州耐高溫聚甲醛POM原料什么價(jià)格,聚甲醛POM原料" src="https://tyunfile.71360.com/UploadFile/sysh888/637359314281650391/2598322.png"></div><p style="text-indent:25px">聚甲醛POM原料的構(gòu)成：聚甲醛POM原料由丙烯晴、丁二烯、苯乙烯構(gòu)成，丙烯腈主要供應(yīng)了耐化學(xué)和熱穩(wěn)定性;丁二烯提供了韌度和沖擊強(qiáng)度；苯乙烯則為聚甲醛POM原料提供硬度和可加工性。三種材料組合形成了綜合性的塑料。聚甲醛POM原料的優(yōu)點(diǎn)：聚甲醛POM原料具有良好的綜合性能，容易配色，輕度高，耐沖擊強(qiáng)，注塑流動(dòng)性好，表面易處理，優(yōu)良的耐熱、耐油性能和化學(xué)穩(wěn)定性，尺寸穩(wěn)定，易機(jī)械加工。聚甲醛POM原料的缺點(diǎn)：（1）不耐有機(jī)溶劑，會(huì)被溶脹，也會(huì)被部分有機(jī)溶劑所溶解；（2）耐熱性不夠好，普通聚甲醛POM原料的熱變形溫度*為95~98℃。聚甲醛POM原料板剛性較大，機(jī)械強(qiáng)度較高，熔點(diǎn)亦較高。昆山特定聚甲醛POM原料有哪些</p><p style="text-indent:25px">聚甲醛POM原料有良好的防腐、耐蝕性能。杭州耐高溫聚甲醛POM原料什么價(jià)格</p><p style="text-indent:25px">完全非晶態(tài)的聚甲醛POM原料只有在-100℃時(shí)才能得到。高密度和高結(jié)晶度是聚甲醛POM原料具有優(yōu)良勝能的主要原因，如硬度大和模量高，尺寸穩(wěn)定性好，耐疲勞性突出，不易被化學(xué)介質(zhì)腐蝕等。盡管聚甲醛POM原料分子鏈中C-O鍵有一定的極性，但由于高密度和高結(jié)晶度束縛了偶極矩的運(yùn)動(dòng)，從而使其仍具有良好的電絕緣性能和介電性能。聚甲醛POM原料中含有半縮醛結(jié)構(gòu)。當(dāng)加熱至100℃左右時(shí)，可從其的半縮醛處逐漸解聚，因此其耐熱性較低。當(dāng)加熱到170℃左右時(shí)，可從分子鏈的任何一處發(fā)生自動(dòng)氧化反應(yīng)而放出甲醛，甲醛在高溫有氧時(shí)會(huì)被氧化成為甲酸。杭州耐高溫聚甲醛POM原料什么價(jià)格</p></p><br /><p>文章來(lái)源地址: 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