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href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="vzgvrip" class="twoCol"><div id="ztn82yu" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應</a>?<a href="http://www.cdcfah.com/cp/first-_huagong/">化工</a>?<a href="http://www.cdcfah.com/cp/second-huagong_quan/">醛</a>?<a href="http://www.cdcfah.com/cp/third-quan_djjq/">多聚甲醛</a>?蘇州功能性POM批發(fā)廠家抱誠守真蘇州晶塑米新材料供應</p><div id="wk7gbsj" class="leftbox clearfix"><h1>蘇州功能性POM批發(fā)廠家抱誠守真蘇州晶塑米新材料供應</h1><div id="x8usuls" class="proBig"><div id="r9844np" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288066131190/4300719.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3oujvsp" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288066131190/4300719.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="iokhels" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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)品關鍵詞：</span>蘇州功能性POM批發(fā)廠家,POM</p><p><span>***更新：</span>2020-11-14 03:22:50</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="3np34ub" 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: </span>151-62619982</p><p><span>地址: </span>陸家鎮(zhèn)陸豐東路3號仕泰隆模具城17-8號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="079jtam" class="page-proshow02"><p class="title">詳細說明</p><div id="m8tfmoq" class="box"><p><p style="text-indent:25px">均聚甲醛生產(chǎn)技術：均聚甲醛生產(chǎn)技術是以高純度氣相甲醛或三聚甲醛為均聚單體的生產(chǎn)技術，蘇州功能性POM批發(fā)廠家。均聚甲醛生產(chǎn)技術始于杜邦公司，是由甲醛單體催化合成的工藝。杜邦公司采用甲醛單體聚合路線，首先50%的甲醛水溶液與異辛醇反應生產(chǎn)半縮醛，再經(jīng)脫水、熱解、精制得到高純甲醛，蘇州功能性POM批發(fā)廠家，在惰性溶液中經(jīng)催化進行聚合，產(chǎn)物經(jīng)過濾、分離和干燥后再用醋酐酯化封端，得到熱穩(wěn)定的聚甲醛。日本旭化成公司采用三聚甲醛路線，蘇州功能性POM批發(fā)廠家，以甲縮醛合成濃甲醛，固體酸催化合成三聚甲醛，以凈化后的三聚甲醛單體經(jīng)溶液連續(xù)聚合、連續(xù)酯化封端、排氣基礎造粒等環(huán)節(jié)制得穩(wěn)定化聚甲醛產(chǎn)物。聚甲醛一旦熔融它的速度會很快并且凝固也很快和，其制品在澆注時容易產(chǎn)生出現(xiàn)的表面缺陷。蘇州功能性POM批發(fā)廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州功能性POM批發(fā)廠家,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288066131190/4300719.png"></div><p style="text-indent:25px">聚甲醛：聚甲醛(英文：polyformaldehyde)又名縮醛樹脂（acetaln resins）；聚氧亞甲基（polyoxymethylenes）。全名聚甲醛樹脂，簡稱聚甲醛，熱塑性結(jié)晶聚合物。被譽為“超鋼”或者“賽鋼”。結(jié)構式如下，英文縮寫為POM。通過甲醛聚合所得之聚合物，聚合度不高，且易受熱解聚。簡介：1955年前后美國杜邦公司由甲醛聚合得到甲醛的均聚物。聚甲醛很易結(jié)晶，結(jié)晶度70%以上。均聚甲醛的熔融溫度為180℃左右。它是繼聚酰胺之后又一種綜合性能優(yōu)良的工程塑料，具有高的力學性能，如強度、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。蘇州功能性POM批發(fā)廠家聚甲醛很不耐酸，不耐強堿和不耐太陽光紫外線的輻射。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州功能性POM批發(fā)廠家,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387287884734903/8623844.png"></div><p style="text-indent:25px">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，不耐強堿和不耐月光紫外線的輻射。聚甲醛的拉伸強度達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堅韌的。具抗熱強度，彎曲強度，耐疲勞性強度均高，耐磨性和電性能優(yōu)良。提高聚甲醛的耐候性：在聚甲醛中加入抗氧劑及光穩(wěn)定劑可以提高聚甲醛的耐候性。針對POM受紫外線照射易發(fā)生白化、龜裂等缺點，一些科研機構紛紛開發(fā)出耐候型品種，以滿足汽車內(nèi)外裝飾材料的要求。導電、抗靜電聚甲醛：采用加入炭黑、碳纖維、不銹鋼纖維等導電填充料的方法，可以提高聚甲醛導電性能。在聚甲醛中加入特殊的抗靜電劑則可使聚甲醛具有抗靜電性，減少其在電子領域應用時因灰塵、碎屑積聚及靜電荷產(chǎn)生的干擾。</p><p style="text-indent:25px">聚甲醛可以進行擠出成型、注射成型和二次加工成型。加工聚甲醛時應注意： (1)固體狀的聚甲醛結(jié)晶度達75、80％，是一種高結(jié)晶性聚合物。 (2)熔點175℃，加工溫度200～205℃，凝固點160℃，用常溫水冷卻，使其結(jié)晶的凝固速度比熔融速快得多，因此在凝固點以下即成剛性(擠出時用短的冷卻水槽，注射時縮短冷卻時間就行)。 (3)容積的變化：設熔融時為l，則凝固時為0．89，常溫時為0．84。 (4)由于凝固速度快且容積變化大，故擠出物表面容易開裂、變形，冷卻時要特別注意。若使用較高溫度的冷卻劑則可放慢凝固速度，控制其牽引，使制品有良好的表面光潔度。 (5)避免在擠出機中作長時間的滯留：在230℃時，只允許留15分鐘，避免酸性、堿性異物混入，否則容易引起分解，因此對所用顏料必須嚴加挑選。聚甲醛它的耐疲勞性、耐蠕變性、硬度和耐水性比尼龍更好。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州功能性POM批發(fā)廠家,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288104344052/9376211.png"></div><p style="text-indent:25px">再生聚甲醛加什么可以增加韌性和光澤：由于POM結(jié)晶度較高，結(jié)晶晶粒較大，缺口沖擊強度低，往往以脆性方式斷裂，所以改善POM的沖擊韌性主要有2種方法： (1) 彈性體增韌（常用的彈性體如TPU、EPDM、丁腈橡膠、硅橡膠等）; (2) 剛性粒子增韌（常用的有滑石粉、硅藻土、二氧化鈦、碳酸鈣、玻璃微珠等），POM料本身具有表面光滑，有光澤的特點，所以也可以通過從加工助劑方面來提高其光澤性，如加入適量的脫模劑，內(nèi)潤滑劑等。聚甲醛增韌TPU選擇哪種？用何相容劑？ (1) 采用不同種類的 TPU對聚甲醛進行增韌改性，結(jié)果發(fā)現(xiàn)，聚己內(nèi)酯共聚酯型 TPU 的增韌效果較好； (2) 且TPU的用量對增韌材料的性能有較大影響，當TPU用量為40%時，由于共混物形成雙連續(xù)相結(jié)構，沖擊性能發(fā)生突變，增韌效果zui佳； (3) 也可以通過添加 SEBS-g-MA 作增容劑。聚甲醛固體狀的聚甲醛結(jié)晶度達75、80％，是一種高結(jié)晶性聚合物。日本寶理POMM25S</p><p style="text-indent:25px">聚甲醛以共聚合成方法制成，它們的分子結(jié)構雖然均為線性結(jié)構，但略微的有所區(qū)別。蘇州功能性POM批發(fā)廠家</p><p style="text-indent:25px">聚甲醛注射過程中應注意哪些事項：物料過熱（超過240℃)或受熱時間過長，容易分解,產(chǎn)生相當量的甲醛。部分甲醛將進而氧化成甲酸，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。操作上應切實予以注意：(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)應不留大量剩料；(5)其他原料更換為聚甲醛時，除了加工溫度比聚甲醛低的物料或者與聚甲醛相近的。蘇州功能性POM批發(fā)廠家</p><p style="text-indent:25px">蘇州晶塑米新材料有限公司致力于橡塑，是一家貿(mào)易型的公司。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個細節(jié)，公司旗下PA66，PC，POM，PLA深受客戶的喜愛。公司注重以質(zhì)量為中心，以服務為理念，秉持誠信為本的理念，打造橡塑良好品牌。蘇州晶塑米秉承“客戶為尊、服務為榮、創(chuàng)意為先、技術為實”的經(jīng)營理念，全力打造公司的重點競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1981156.html</p></div></div></div></div></div><div id="x42dhjq" class="page-right twoColRt"><div id="7qmtq24" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="fgczbcj" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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