紫外線穩(wěn)定POM原料價(jià)格歡迎來(lái)電和氏璧供-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="均聚.共聚POM比較:?均聚物材料具有很好的延展強(qiáng)度、抗疲勞強(qiáng)度，但不易于加工。共聚物材料有很好的熱穩(wěn)定性、化學(xué)穩(wěn)定性并且易于加工。均聚甲醛除了上述性能外，密度、結(jié)晶度，紫外線穩(wěn)定POM原料價(jià)格、機(jī)械強(qiáng)度高。而共聚甲醛短期強(qiáng)度、模量、伸長(zhǎng)率"><meta name="keywords" content="紫外線穩(wěn)定POM原料價(jià)格,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" /> 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src="https://tyunfile.71360.com/UploadFile/ncmtgeevi1gp/637480493589566848/8525954.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="t5vx3vt" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ncmtgeevi1gp/637480493589566848/8525954.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="t55nrl5" 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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>紫外線穩(wěn)定POM原料價(jià)格,POM</p><p><span>***更新：</span>2021-02-05 08:00:19</p><p><span id="click" >瀏覽次數(shù)：4次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="xtb3xvj" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海和氏璧化工有限公司</a></p><p><span>聯(lián)系人：</span>項(xiàng)小姐</p><p><span>郵箱: </span>tge@ncmchem.com</p><p><span>電話: </span>15806231312</p><p><span>傳真: </span>0512_52849998</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0512-52845866</p><p><span>地址: </span>上海市黃浦區(qū)瑞金南路1號(hào)21樓B室</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="5drpv7r" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="pd5b5bz" class="box"><p><p style="text-indent:25px">均聚.共聚POM比較:?均聚物材料具有很好的延展強(qiáng)度、抗疲勞強(qiáng)度，但不易于加工。共聚物材料有很好的熱穩(wěn)定性、化學(xué)穩(wěn)定性并且易于加工。均聚甲醛除了上述性能外，密度、結(jié)晶度，紫外線穩(wěn)定POM原料價(jià)格、機(jī)械強(qiáng)度高。而共聚甲醛短期強(qiáng)度、模量、伸長(zhǎng)率、熱變形溫度，紫外線穩(wěn)定POM原料價(jià)格、抗蠕變性、耐熱老化性、耐熱水性等都優(yōu)于均聚甲醛，成型溫度范圍也較寬。?四.基本參數(shù):?????????????????????????????均聚甲醛????????共聚甲醛?熔化溫度??????????????190~230C???????190~210C?相對(duì)密度??????????????????1.42????????????????1.41?吸水性(％)?????????????????0.25????????????????0.22?拉伸強(qiáng)度MPa)????????????68.6????????????????59.8?伸長(zhǎng)率(％)???????????????????40??????????????????75?彎曲強(qiáng)度(MPa)??????????????96??????????????????89?沖擊強(qiáng)度(kJ／m2)????????7.35????????????????6.37?洛氏硬度?????????????????????M90????????????????M78上海和氏璧化工提供 POM ，改性POM，汽車(chē)內(nèi)飾用POM，耐磨POM，紫外線穩(wěn)定POM原料價(jià)格, 如有需求，歡迎致電我司。紫外線穩(wěn)定POM原料價(jià)格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="紫外線穩(wěn)定POM原料價(jià)格,POM" src="https://tyunfile.71360.com/UploadFile/ncmtgeevi1gp/637480493589566848/8525954.png"></div><p> 聚甲醛有良好的抗沖擊性能，而且能耐多次重復(fù)沖擊。(3)聚甲醛耐蠕變性能好。在長(zhǎng)時(shí)問(wèn)負(fù)荷作用下，變形値小（即引起變形的負(fù)荷值高），回彈性高，如在200公斤/厘米2的拉力作用下，試樣在42小時(shí)后，伸長(zhǎng)，伸長(zhǎng)為。(4)聚甲醛耐疲勞性能好，能接受上萬(wàn)次的循環(huán)負(fù)荷，而強(qiáng)度降低很少。（5)聚甲醛有自潤(rùn)滑性，摩擦阻力小，摩擦系數(shù)低，如加入少量聚四氟乙烯后，耐磨性更好。2.聚甲醛耐溫性能好熱變性溫度較髙，負(fù)荷為，共聚甲醛為110攝氏度、均聚甲醛為124攝氏度，焙點(diǎn)分別為160攝氏度和175攝氏度。長(zhǎng)期工作溫度可達(dá)100攝氏度以上，共聚甲醛在ll4攝氏度時(shí)，連續(xù)使川2,000小時(shí)，或在138攝氏度時(shí)連續(xù)使用1000小時(shí)，其性能沒(méi)有明顯的變化。長(zhǎng)沙耐候POM上海和氏璧化工提供 POM ，改性POM，增強(qiáng)POM，潤(rùn)滑POM, 如有需求，歡迎致電我司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="紫外線穩(wěn)定POM原料價(jià)格,POM" src="https://tyunfile.71360.com/UploadFile/ncmtgeevi1gp/637411219458408772/8679712.png"></div><p style="text-indent:25px">聚甲醛POM廣闊用于制造各種滑動(dòng)、轉(zhuǎn)動(dòng)機(jī)械零件，做各種齒輪、杠桿、滑輪、鏈輪，特別適宜做軸承，熱水閥門(mén)、精密計(jì)量閥、輸送機(jī)的鏈環(huán)和輥?zhàn)?、流量?jì)、汽車(chē)內(nèi)外部把手、曲柄等車(chē)窗轉(zhuǎn)動(dòng)機(jī)械，油泵軸承座和葉輪燃?xì)忾_(kāi)關(guān)閥、電子開(kāi)關(guān)零件、緊固體、接線柱鏡面罩、電風(fēng)扇零件、加熱板、儀表鈕；錄音錄像帶的軸承；各種管道和農(nóng)業(yè)噴灌系統(tǒng)以及閥門(mén)、噴頭、水龍頭、洗浴盆零件；開(kāi)關(guān)鍵盤(pán)、按鈕、音像帶卷軸；溫控定時(shí)器；動(dòng)力工具，庭園整理工具零件；另外可作為沖浪板、帆船及各種雪撬零件，手表微型齒輪、體育用設(shè)備的框架輔件和背包用各種環(huán)扣、緊固件、打火機(jī)、拉鏈、扣環(huán)；醫(yī)療器械中的心臟起博器；人造心臟瓣膜、頂椎、假肢等用于化工、制藥等化學(xué)合成及使用無(wú)水甲醛作原料的合成方面。</p><p> 聚甲醛POM?學(xué)名"聚氧化亞甲基".（又稱(chēng)賽鋼、特靈）?POM依結(jié)構(gòu)不同可分為均聚甲醛(POM-H)和共聚甲醛(POM-K)兩種。 </p> <p> 1.?外觀:?POM的外觀為淡黃色或白色半透明或不透明的粉料或粒料，硬而質(zhì)密、與象牙相似，制品表面光滑并有光澤， </p> <p> 2.燃燒性:?易燃，離火后能繼續(xù)燃燒，其氧指數(shù)*為14~16，火焰上端為黃色、下端為藍(lán)色，熔融落滴，有刺激性甲醛味和魚(yú)腥味。需注意，具有毒性。 </p> <p> 3.透氣性:?POM的透氣性小，*為PE的幾分之一。 </p> <p> 4.收縮率:?POM的高結(jié)晶程度導(dǎo)致它有相當(dāng)高的收縮率，可高達(dá)到2%~3.5%。 </p> <p> 5.力學(xué)性:?POM的力學(xué)性能相當(dāng)好，具有較高的彈性模量，摩擦系數(shù)低而穩(wěn)定，耐磨性能好，自潤(rùn)滑性好。有很高的硬度和剛度。與金屬十分接近。尺寸穩(wěn)定性好，吸水率很小，耐多次重復(fù)沖擊，強(qiáng)度變化小。其抗張強(qiáng)度和模量已接近鋼材。疲勞強(qiáng)度好。是熱塑性材料中耐疲勞性為優(yōu)越的品種。能耐一百萬(wàn)次以上反復(fù)負(fù)荷作用。具有高度抗蠕變和應(yīng)力松馳能力。力學(xué)性能隨溫度變化小，共聚比均聚稍大一些。上海和氏璧化工提供 POM ，改性POM，聚甲醛現(xiàn)貨，耐磨POM, 如有需求，歡迎致電我司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="紫外線穩(wěn)定POM原料價(jià)格,POM" src="https://tyunfile.71360.com/UploadFile/ncmtgeevi1gp/637411219347530163/309464.png"></div><p>塞拉尼斯與Hoechst在德國(guó)合資成立了泰科納，生產(chǎn)Hostaform?共聚甲醛。1968年，塞拉尼斯和大賽璐在日本合資成立了寶理塑料，生產(chǎn)Duracon共聚甲醛，這也是亞洲早的共聚甲醛的生產(chǎn);2004年，杜邦與旭化成在張家港建立4萬(wàn)噸的共聚甲醛的工廠;2005年，PTM寶泰菱在南通的共聚甲醛開(kāi)工，產(chǎn)能6萬(wàn)噸/年。(寶泰菱：寶理、泰科納、三菱瓦斯)……二、聚甲醛的結(jié)構(gòu)與性能聚甲醛(英文：polyformaldehyde，縮寫(xiě)為POM)，熱塑性結(jié)晶聚合物，被譽(yù)為“超鋼”或者“賽鋼”，又稱(chēng)聚氧亞甲基。它是繼聚酰胺之后又一種綜合性能優(yōu)良的工程塑料，具有高的力學(xué)性能，如強(qiáng)度、模量、耐磨性、韌性、耐疲勞性和抗蠕變性，還具有優(yōu)良的電絕緣性、耐溶劑性和可加工性，是五大通用工程塑料之一。POM共性：高結(jié)晶、高剛性、強(qiáng)度、自潤(rùn)滑、抗疲勞強(qiáng)度、耐化學(xué)品、抗蠕變性能、低吸水性、尺寸穩(wěn)定性。性能對(duì)比：性能均聚甲醛共聚甲醛結(jié)構(gòu)式密度g/㎝3結(jié)晶度%75-8570-75熔點(diǎn)℃175165剛性*（+）0抗沖擊性*（+）0熱穩(wěn)定性0（+）熱老化0（+）耐熱水（-）（+）耐堿性（-）PH4-10（+）PH4-14耐酸性（-）（-）*短期性能備注：(+)性能更優(yōu)，(-)性能更差，0基準(zhǔn)水平三、POM的主要應(yīng)用領(lǐng)域POM綜合性能優(yōu)異。上海和氏璧化工提供 POM材料，改性POM，增強(qiáng)POM，耐磨POM, 如有需求，歡迎致電我司。武漢POM價(jià)格對(duì)比</p><p style="text-indent:25px">上海和氏璧化工提供 POM ，改性POM，增強(qiáng)POM，耐磨聚甲醛, 如有需求，歡迎致電我司。紫外線穩(wěn)定POM原料價(jià)格</p><p>聚甲醛的基本介紹自1959年美國(guó)杜邦公司成功開(kāi)發(fā)聚甲醛(polyxymethylene，簡(jiǎn)稱(chēng)POM)并工業(yè)化生產(chǎn)以來(lái)，POM以其優(yōu)異的性能在汽車(chē)、電子電器、日用消費(fèi)品、機(jī)械工業(yè)等領(lǐng)域獲得了運(yùn)用,迅速發(fā)展成為五大工程塑料之一。聚甲醛制備機(jī)理一、均聚甲醛的制備原理：01在催化劑的作用下三聚甲醛開(kāi)環(huán)聚合成大分子02無(wú)水甲醛的加成聚合03甲醛在水中縮聚二、共聚甲醛的制備原理：（1）鏈引發(fā)：形成氧正離子和碳正離子活性中心（2）鏈增長(zhǎng)：形成長(zhǎng)鏈碳正離子活性中心（3）鏈終止：水或甲醇使之終止如果POM的端基為羥基，羥基十分活潑，POM會(huì)自動(dòng)降解。因此要對(duì)POM進(jìn)行封端：聚甲醛的應(yīng)用聚甲醛(POM)是一種性能優(yōu)良的工程塑料POM具很高的剛度和硬度，耐拉耐彎，抗疲勞性能優(yōu)良，性能非常接近金屬；電絕緣性、耐溶劑性、可加工性、自潤(rùn)滑性?xún)?yōu)良，POM耐反復(fù)沖擊、去載回復(fù)性?xún)?yōu)；固有吸振性、消音性、絕緣性好，且不受濕度影響；耐化學(xué)藥品性?xún)?yōu)；其力學(xué)性能受溫度影響小，具有較高的熱變形溫度。POM可以代替大部分有色金屬應(yīng)用于機(jī)械制造、建材、汽車(chē)、日用輕工、醫(yī)用領(lǐng)域，用于制造各種轉(zhuǎn)動(dòng)滑動(dòng)零件，齒輪滑輪軸承等。紫外線穩(wěn)定POM原料價(jià)格</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3172590.html</p></div></div></div></div></div><div id="pnlbpl7" class="page-right twoColRt"><div id="vbzfvjf" class="box01 margin10 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