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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銷售廠家,POM</p><p><span>***更新：</span>2020-12-22 02:17:17</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="afszm7o" 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="g23egqz" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="kzwtacl" class="box"><p><p style="text-indent:25px">基本性能：POM分為兩大類，一類為均聚甲醛，以杜邦和旭化成為表示，另一類為共聚甲醛，除了上述兩家，其他供應(yīng)商的產(chǎn)品基本都為共聚，南京增強(qiáng)級(jí)POM銷售廠家，旭化成是個(gè)NB的公司，均聚和共聚都生產(chǎn)。這里簡(jiǎn)單介紹一下均聚和共聚的特點(diǎn)，以便更準(zhǔn)確的選擇材料。耐熱性能：耐熱性能≠熔點(diǎn)，而是POM長(zhǎng)期在高溫環(huán)境下工作的能力。由于均聚甲醛分子鏈中基本都是-C-O-鍵，鍵能大約為20~40 kcal/mol，而共聚甲醛中增加了一些-C-C-O-鍵，鍵能大約是60~80 kcal/mol，因此需要共聚甲醛分解所需的能量更高，so，南京增強(qiáng)級(jí)POM銷售廠家，共聚甲醛的長(zhǎng)期熱穩(wěn)定性更好。熱穩(wěn)定性能影響的不僅是產(chǎn)品的工作環(huán)境，同時(shí)對(duì)于現(xiàn)在汽車產(chǎn)業(yè)的VOC及氣味管控也有著很大的影響，均聚甲醛注塑的時(shí)候氣味大，而對(duì)于POM而言，氣味一般就表示甲醛釋放量大，這酸爽，聞過的都知道。聚甲醛以共聚合成方法制成，南京增強(qiáng)級(jí)POM銷售廠家，它們的分子結(jié)構(gòu)雖然均為線性結(jié)構(gòu)，但略微的有所區(qū)別。南京增強(qiáng)級(jí)POM銷售廠家</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銷售廠家,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387287913533893/3861321.png"></div><p style="text-indent:25px">注塑影響條件料筒溫度：因?yàn)榫奂兹≒OM塑膠原料）是結(jié)晶性塑料，熔料在料筒內(nèi)停留時(shí)間對(duì)于它的含晶核數(shù)量與大小均會(huì)產(chǎn)生影響，在其熔點(diǎn)以上的同一溫度下，熔體停留時(shí)間越長(zhǎng)，晶核數(shù)會(huì)下降。料筒溫度通常應(yīng)控制在150～180℃，溫度不宜過高，太高會(huì)導(dǎo)致變色分解，過低則會(huì)塑化不均，影響流動(dòng)性。所以在確保流動(dòng)性的前提下，盡量采用較低的加工溫度和較短的受熱時(shí)間。另外噴嘴溫度應(yīng)略低于料筒溫度。模具溫度：通常模具是影響聚甲醛（POM）強(qiáng)度的主要因素，模溫高，結(jié)晶時(shí)間長(zhǎng)，有利于晶體的生長(zhǎng)，結(jié)晶較完整，并且流動(dòng)性會(huì)更好。一般情況下，模溫應(yīng)控制在75～120℃。注射壓力：注射壓力的大小主要取決于聚甲醛（POM）的熔融流動(dòng)性，流道、澆口的厚度和寬度，以及塑料制品的厚度等因素。通常為40～130Mpa，對(duì)于厚壁制品，注射壓力可取小值，反之薄壁制品則應(yīng)取大值。南京增強(qiáng)級(jí)POM銷售廠家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(zhǎng)期使用。</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銷售廠家,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387287966590273/3008050.png"></div><p style="text-indent:25px">簡(jiǎn)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**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">特點(diǎn)：POM強(qiáng)度高，質(zhì)輕，常用來代替銅、鋅、錫、鉛等有色金屬，普遍用于工業(yè)機(jī)械、汽車、電子電器、日用品、管道及配件、精密儀器和建材等部門。POM 被普遍用于制造各種滑動(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、精密計(jì)量閥、輸送機(jī)的鏈環(huán)和輥?zhàn)?、流量?jì)、汽車內(nèi)外部把手、曲柄等車窗轉(zhuǎn)動(dòng)機(jī)械，油泵軸承座和葉輪燃?xì)忾_關(guān)閥、電子開關(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、噴頭、水龍頭、洗浴盆零件；開關(guān)鍵盤、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。聚甲醛添加硅油、礦物油、油脂等潤(rùn)滑油及潤(rùn)滑脂類。</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銷售廠家,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288163318668/8954645.png"></div><p style="text-indent:25px">均聚甲醛生產(chǎn)技術(shù)：均聚甲醛生產(chǎn)技術(shù)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(shù)。均聚甲醛生產(chǎn)技術(shù)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(yīng)生產(chǎn)半縮醛，再經(jīng)脫水、熱解、精制得到高純甲醛，在惰性溶液中經(jīng)催化進(jìn)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，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(chǔ)造粒等環(huán)節(jié)制得穩(wěn)定化聚甲醛產(chǎn)物。聚甲醛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。南京增強(qiáng)級(jí)POM銷售廠家</p><p style="text-indent:25px">聚甲醛是強(qiáng)而硬且有良好疲勞性和熱穩(wěn)定性的熱塑(性)塑料。南京增強(qiáng)級(jí)POM銷售廠家</p><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。南京增強(qiáng)級(jí)POM銷售廠家</p><p style="text-indent:25px">蘇州晶塑米新材料有限公司致力于橡塑，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。蘇州晶塑米擁有一支經(jīng)驗(yàn)豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團(tuán)隊(duì)，以高度的專注和執(zhí)著為客戶提供PA66，PC，POM，PLA。蘇州晶塑米繼續(xù)堅(jiān)定不移地走高質(zhì)量發(fā)展道路，既要實(shí)現(xiàn)基本面穩(wěn)定增長(zhǎng)，又要聚焦關(guān)鍵領(lǐng)域，實(shí)現(xiàn)轉(zhuǎn)型再突破。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/2505130.html</p></div></div></div></div></div><div id="e7tqsz7" class="page-right twoColRt"><div id="tn8eb8e" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="s3npryc" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div 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