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href="http://www.cdcfah.com/cp/third-quan_djjq/">多聚甲醛</a>?南京增強(qiáng)級(jí)POM批發(fā) 歡迎來電蘇州晶塑米新材料供應(yīng)</p><div id="s3qxk2t" class="leftbox clearfix"><h1>南京增強(qiáng)級(jí)POM批發(fā) 歡迎來電蘇州晶塑米新材料供應(yīng)</h1><div id="shoqxz3" class="proBig"><div id="3c7c8e8" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387287940535671/468471.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="yxk2jyu" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387287940535671/468471.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="dnu4tq3" 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>南京增強(qiáng)級(jí)POM批發(fā),POM</p><p><span>***更新：</span>2020-12-28 04:19:30</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="qpwbsp2" 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="ocpzgif" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="o7dkr8w" class="box"><p><p style="text-indent:25px">全球聚甲醛行業(yè)發(fā)展概況：目前世界POM樹脂工業(yè)化生產(chǎn)企業(yè)近20家，均聚POM樹脂的產(chǎn)能約占總產(chǎn)能的15%左右，且除杜邦公司全部生產(chǎn)均聚POM樹脂，日本旭化成公司部分生產(chǎn)均聚POM樹脂外，國內(nèi)外各公司均全部生產(chǎn)共聚POM樹脂。 2018年全球聚甲醛樹脂消費(fèi)量約為130萬噸，而2010年為80萬噸，2010-2018年年均增長6.4%，南京增強(qiáng)級(jí)POM批發(fā)。聚甲醛在小零件中的多功能性和實(shí)用性在很大程度上決定了終端用途的需求量。電氣電子（E/E）和電器是聚甲醛的主要終端應(yīng)用，約占33%。第二大終端應(yīng)用是交通運(yùn)輸，占23%。其次是消費(fèi)品（20%）和工業(yè)/機(jī)械（14%）。預(yù)計(jì)2018-2023年全球聚甲醛需求年均增速約為3.0％，主要推動(dòng)因素是電子、消費(fèi)品和制造業(yè)，南京增強(qiáng)級(jí)POM批發(fā)，南京增強(qiáng)級(jí)POM批發(fā)。未來，電子電氣和電器仍將是zui大的終端應(yīng)用。聚甲醛除了強(qiáng)酸、酚類和有機(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。南京增強(qiáng)級(jí)POM批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京增強(qiáng)級(jí)POM批發(fā),POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387287940535671/468471.png"></div><p style="text-indent:25px">特性:1、具有較好的綜合性能，在熱塑性塑料中是zui堅(jiān)硬的，是塑料材料中力學(xué)性能zui接近金屬的品種之一，其抗張強(qiáng)度、彎曲強(qiáng)度、耐疲勞強(qiáng)度，耐磨性和電性能都十分優(yōu)良，可在-40℃--100℃之間長期使用。2、屬結(jié)晶性塑料，熔點(diǎn)明顯，一旦達(dá)到熔點(diǎn)，熔體粘度迅速下降。當(dāng)溫度超過一定限度或熔體受熱時(shí)間過長，會(huì)引起分解。銅是POM降解催化劑，與POM熔體接觸的部位應(yīng)避免使用銅或銅材料。3、按分子鏈結(jié)構(gòu)不同，聚甲醛可分為均聚甲醛和共聚甲醛。前者密度、結(jié)晶度、熔點(diǎn)都較高，但是熱穩(wěn)定性差，加工溫度范圍窄（10℃），對(duì)酸堿的穩(wěn)定性略低；后者密度、結(jié)晶度、熔點(diǎn)較低，但熱穩(wěn)定性好，不易分解，加工溫度范圍寬（50℃）。聚甲醛的不足之處在于：由受強(qiáng)酸腐蝕，耐候差，粘合性差，熱分解與軟化溫度接近，限氧指數(shù)小。南京增強(qiáng)級(jí)POM批發(fā)聚甲醛具有優(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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京增強(qiáng)級(jí)POM批發(fā),POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288223592211/5736543.png"></div><p style="text-indent:25px">聚甲醛改性技術(shù)：聚甲醛綜合性能優(yōu)越，但其分子排列規(guī)整，在成型加工過程中易結(jié)晶，導(dǎo)致其韌性差、延展性差、缺口沖擊強(qiáng)度低。同時(shí)，聚甲醛熱穩(wěn)定性較差，表面硬度低，在摩擦過程中容易發(fā)生黏著磨損，不能滿足實(shí)際生產(chǎn)要求，限制了聚甲醛在工業(yè)生產(chǎn)中的應(yīng)用。為了改進(jìn)聚甲醛性能，擴(kuò)大其應(yīng)用領(lǐng)域，對(duì)聚甲醛的改性也必不可少。因此，聚甲醛的改性技術(shù)也是其研究領(lǐng)域的重要方向。聚甲醛改性技術(shù)分為物理改性和化學(xué)改性。物理改性是指通過熔融共混的方式，將共混物料按照預(yù)先設(shè)計(jì)好的改性配方通過擠出機(jī)熔融共混擠出，提高聚甲醛某些性能指標(biāo)?；瘜W(xué)改性主要是在化學(xué)合成過程中，通過分子結(jié)構(gòu)設(shè)計(jì)，改變共聚單體的種類，或添加第三單體從而獲得滿足需求的聚甲醛產(chǎn)品?；瘜W(xué)改性難度較高，而物理改性技術(shù)難度較小，易于實(shí)施，因此目前工業(yè)化的聚甲醛改性主要以物理改性為主，包括增韌改性、增強(qiáng)改性、耐磨改性、阻燃改性、熱穩(wěn)定性和耐候性改性、防靜電改性等。</p><p style="text-indent:25px">多聚甲醛操作注意事項(xiàng)：　　1、多聚甲醛具有一定的毒性，對(duì)人體有害，因此在進(jìn)行操作時(shí)，一定要戴上口罩、手套、防護(hù)眼鏡保護(hù)好自己; 　　2、一旦多聚甲醛泄露，要記得立即切斷附近的火源，因?yàn)槎嗑奂兹┮兹? 　　3、在進(jìn)行多聚甲醛的施工時(shí)，一定要禁止吸煙、進(jìn)食和飲水，施工完畢后也必須洗澡。　　多聚甲醛中意外救措施：　　多聚甲醛常常會(huì)導(dǎo)致人體中毒，因此我們要學(xué)會(huì)多聚甲醛中毒的急救措施。如果是皮膚接觸了多聚甲醛，那么要立即用肥皂水進(jìn)行徹底的沖洗;多聚甲醛進(jìn)入眼睛要提起眼瞼，用生理鹽水清理至少15分鐘;呼吸多聚甲醛出現(xiàn)意外，要迅速到空氣清晰的空間，保持呼吸道的順暢。聚甲醛通過甲醛聚合所得之聚合物，聚合度不高，且易受熱解聚。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京增強(qiáng)級(jí)POM批發(fā),POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387287884734903/8623844.png"></div><p style="text-indent:25px">聚甲醛抗靜電、絕緣改性：聚甲醛絕緣性能特別好，這使得聚甲醛容易產(chǎn)生靜電，從而限制了聚甲醛在石油化工廠及粉塵環(huán)境中的使用。通過添加一定比例的聚乙二醇可使聚甲醛具有永遠(yuǎn)的抗靜電效果。此外，可以通過添加碳納米管、炭黑等常用導(dǎo)電材料以提高聚甲醛的導(dǎo)電性質(zhì)。聚甲醛抗老化、光穩(wěn)定性改性：聚甲醛對(duì)紫外線非常敏感，在強(qiáng)烈的陽光暴曬下，表面會(huì)變得粗糙。使用受阻胺622、292或苯并三唑類紫外線吸收劑UV—P對(duì)聚甲醛進(jìn)行紫外光保護(hù)，也可用炭黑進(jìn)行改性。聚甲醛一旦熔融它的速度會(huì)很快并且凝固也很快和，其制品在澆注時(shí)容易產(chǎn)生出現(xiàn)的表面缺陷。南京增強(qiáng)級(jí)POM批發(fā)</p><p style="text-indent:25px">聚甲醛吸水性小，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。南京增強(qiáng)級(jí)POM批發(fā)</p><p style="text-indent:25px">聚甲醛可以進(jìn)行擠出成型、注射成型和二次加工成型。加工聚甲醛時(shí)應(yīng)注意： (1)固體狀的聚甲醛結(jié)晶度達(dá)75、80％，是一種高結(jié)晶性聚合物。 (2)熔點(diǎn)175℃，加工溫度200～205℃，凝固點(diǎn)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(diǎn)以下即成剛性(擠出時(shí)用短的冷卻水槽，注射時(shí)縮短冷卻時(shí)間就行)。 (3)容積的變化：設(shè)熔融時(shí)為l，則凝固時(shí)為0．89，常溫時(shí)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(shí)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(jī)中作長時(shí)間的滯留：在230℃時(shí)，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(duì)所用顏料必須嚴(yán)加挑選。南京增強(qiáng)級(jí)POM批發(fā)</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)易型公司。公司業(yè)務(wù)涵蓋PA66，PC，POM，PLA等，價(jià)格合理，品質(zhì)有保證。公司秉持誠信為本的經(jīng)營理念，在橡塑深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點(diǎn)，發(fā)揮人才優(yōu)勢，打造橡塑良好品牌。在社會(huì)各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗(yàn)，為客戶成功提供堅(jiān)實(shí)有力的支持。</p></p><br /><p>文章來源地址: 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