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class="proBig"><div id="gq87nzl" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387287966590273/3008050.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="29kc3iu" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387287966590273/3008050.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="et74fbn" 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>上海銅基POM銷售,POM</p><p><span>***更新：</span>2020-12-09 05:19:33</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="rptqsp7" 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號仕泰隆模具城17-8號</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="mq7jda7" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="i3numjq" class="box"><p><p style="text-indent:25px">聚甲醛POM的成型工藝： 1.建議將模具溫度控制在80-100°C(通常輸送熱油)。 2.聚甲醛具有低吸濕性(吸水率<0.5%)，并且通常在成型前干燥或短時(shí)間干燥。 3.聚甲醛的收縮率非常大，很容易使啤酒塑料“收縮”，因此必須通過延長保存時(shí)間來補(bǔ)償。 4.流動(dòng)性中等，溢出值為0.04mm。流動(dòng)性對溫度變化不敏感，但對注射壓力的變化敏感。 5.可以使用各種進(jìn)料口。流道尺寸為0.13.0-.0.16.0mm。排氣槽的尺寸為0.025-0.04mmX1.5mmX4.0-6.0mm。門的大小為0.6tX2t，上海銅基POM銷售。 6.成型溫度范圍窄，熱穩(wěn)定性差。甲醛單體在250℃以上會分解(熔體的顏色變深)，因此僅提高溫度以提高流動(dòng)性是有害的，并且沒有效果。普通啤酒塑料應(yīng)使用較低的機(jī)筒溫度，較短的停留時(shí)間會增加注射壓力，從而可以改善熔體的流動(dòng)性和產(chǎn)品的表面質(zhì)量(熔體的流動(dòng)性對剪切速率更敏感)。溫度參數(shù)：前鏡筒溫度為190-210°C，中鏡筒溫度為180-205°C，上海銅基POM銷售，后鏡筒溫度為150-175°C。壓力參數(shù)：塑料啤酒的壓力約為100Mpa，背壓為0.5Mpa，上海銅基POM銷售。聚甲醛比強(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。上海銅基POM銷售</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海銅基POM銷售,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387287966590273/3008050.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(qiáng)堿和不耐月光紫外線的輻射。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。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(diǎn)，一些科研機(jī)構(gòu)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(dǎo)電、抗靜電聚甲醛：采用加入炭黑、碳纖維、不銹鋼纖維等導(dǎo)電填充料的方法，可以提高聚甲醛導(dǎo)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(lǐng)域應(yīng)用時(shí)因灰塵、碎屑積聚及靜電荷產(chǎn)生的干擾。無錫食品級POM批發(fā)廠家聚甲醛添加PTFE、PE、UHMWPE 等自身摩擦系數(shù)較低的結(jié)晶性高分子材料。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海銅基POM銷售,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288190223042/1024526.png"></div><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。隨著甲醛選出縮醛樹脂被拉開，于是發(fā)生了熱降解。聚合物的熱穩(wěn)定性可通過端羥基與醋酸酐的酯化來提高。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。</p><p style="text-indent:25px">聚甲醛是一種高科技、高投人、高附加值的“三高”產(chǎn)品，其生產(chǎn)和加工具有較高的技術(shù)含量和經(jīng)濟(jì)附加值，是跨國公司生產(chǎn)廠商的利益中心之一16。我國聚甲醛市場潛力巨大，聚甲醛主要用于汽車和電子電器等行業(yè)，這些均是關(guān)系國計(jì)民生的戰(zhàn)略性行業(yè)17。因此，國內(nèi)應(yīng)加大聚甲醛在汽車工業(yè)中的應(yīng)用，一方面促進(jìn)我國聚甲醛工業(yè)的發(fā)展，另一方面利于促進(jìn)汽車國產(chǎn)化進(jìn)程，隨著我國汽車工業(yè)的國產(chǎn)化進(jìn)程日益加快，汽車工業(yè)將是未來聚甲醛消費(fèi)增長zui快的領(lǐng)域之一。聚甲醛的收縮率非常大，很容易使啤酒塑料“收縮”，因此必須通過延長保存時(shí)間來補(bǔ)償。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海銅基POM銷售,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288223592211/5736543.png"></div><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，因此對所用顏料必須嚴(yán)加挑選。聚甲醛聚合物在關(guān)機(jī)前應(yīng)清洗干凈，以免在啟動(dòng)過程中過熱。韓國工程POMMF2025</p><p style="text-indent:25px">聚甲醛除了酸性物質(zhì)耐受性差以外，對大部分的化學(xué)試劑耐受性都非常好。上海銅基POM銷售</p><p style="text-indent:25px">聚甲醛技術(shù)發(fā)展方向分析：我國已成為世界聚甲醛生產(chǎn)大國，外資公司紛紛進(jìn)入我國建設(shè)生產(chǎn)裝置。但目前國內(nèi)中資聚甲醛生產(chǎn)裝置所采用技術(shù)大都從國外引進(jìn)，且基本為“二流”技術(shù)。我國聚甲醛生產(chǎn)技術(shù)水平提高緩慢，產(chǎn)品質(zhì)量不穩(wěn)定，仍不能滿足國內(nèi)高級市場需求。國內(nèi)企業(yè)生產(chǎn)大多為普通牌號的低端產(chǎn)品，產(chǎn)品結(jié)構(gòu)單一，高級和專用改性產(chǎn)品則主要依賴進(jìn)口。國外改性產(chǎn)品系列和品種眾多，高級改性產(chǎn)品的應(yīng)用量已經(jīng)達(dá)到了30%以上。聚甲醛電纜護(hù)套阻燃性差： POM本身的阻燃性是比較差（比一般的合成高分子材料都易燃），且熱穩(wěn)定性差，所以POM阻燃很難做到V0，通?？赏ㄟ^加入阻燃劑來提高其阻燃性，但由于POM的分子結(jié)構(gòu)特點(diǎn)，常規(guī)的含鹵阻燃劑體系如鹵代磷酸酯、鹵化石蠟、三氧化二銻，在加入到POM中，不僅不會提高材料的阻燃性，反而會加劇聚甲醛的燃燒。建議可加入膨脹型阻燃劑：如紅磷、磷酸鹽、氫氧化鋁（鎂）、三氰尿酸和聚氰胺鹽等或其中幾種復(fù)配使用。上海銅基POM銷售</p><p style="text-indent:25px">蘇州晶塑米新材料有限公司是一家經(jīng)營范圍如下：通用塑膠原料：ABS、PMMA、SAN（AS）、PP等。工程塑膠原料：PC、PC/ABS、PPO、PPE、POM、PA6、PA66、PA46、PA9T、PA6T、PA12、PA11、PBT、PET、ASA等。特種工程塑膠原料：PPS、LCP、PEI、PPA等。熱塑性彈性體：TPU、K膠、EVA、POE；TPR、TPE、SBS、SEBS、TPEE、TPV適用于運(yùn)動(dòng)器材、玩具、手柄、汽車方向盤、電動(dòng)工具握把、箱包、日用工具手把、牙刷、密封圈等行業(yè)。的公司，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷售為一體的專業(yè)化公司。蘇州晶塑米作為經(jīng)營范圍如下：通用塑膠原料：ABS、PMMA、SAN（AS）、PP等。工程塑膠原料：PC、PC/ABS、PPO、PPE、POM、PA6、PA66、PA46、PA9T、PA6T、PA12、PA11、PBT、PET、ASA等。特種工程塑膠原料：PPS、LCP、PEI、PPA等。熱塑性彈性體：TPU、K膠、EVA、POE；TPR、TPE、SBS、SEBS、TPEE、TPV適用于運(yùn)動(dòng)器材、玩具、手柄、汽車方向盤、電動(dòng)工具握把、箱包、日用工具手把、牙刷、密封圈等行業(yè)。的企業(yè)之一，為客戶提供良好的PA66，PC，POM，PLA。蘇州晶塑米始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。蘇州晶塑米創(chuàng)始人李麗，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務(wù)。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2328157.html</p></div></div></div></div></div><div id="waxelxu" class="page-right twoColRt"><div id="tif3gtq" class="box01 margin10 clearfix"><h3><a 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