日本寶理POMCH-20 服務(wù)至上蘇州晶塑米新材料供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="聚甲醛簡介：聚甲醛（POM）又名縮醛樹脂、聚氧亞甲基，按分子鏈結(jié)構(gòu)的不同，分為均聚甲醛和共聚甲醛。聚甲醛是一種綜合性能優(yōu)良的熱塑性工程塑料，為五大工程塑料之一。聚甲醛質(zhì)輕，比強度、比剛度與金屬類似，是工程塑料中力學性能zui接近金屬材料的一"><meta name="keywords" content="日本寶理POMCH-20,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" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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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>?日本寶理POMCH-20 服務(wù)至上蘇州晶塑米新材料供應(yīng)</p><div id="mafqk38" class="leftbox clearfix"><h1>日本寶理POMCH-20 服務(wù)至上蘇州晶塑米新材料供應(yīng)</h1><div id="j3gsm8k" class="proBig"><div id="nczlpw7" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288104344052/9376211.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ve3urt9" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288104344052/9376211.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="y7dkub9" 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(guān)鍵詞：</span>日本寶理POMCH-20,POM</p><p><span>***更新：</span>2021-02-03 08:17:34</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="yx7dacw" 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="kjgyfwq" class="page-proshow02"><p class="title">詳細說明</p><div id="fp8kvhg" class="box"><p><p style="text-indent:25px">聚甲醛簡介：聚甲醛（POM）又名縮醛樹脂、聚氧亞甲基，按分子鏈結(jié)構(gòu)的不同，分為均聚甲醛和共聚甲醛。聚甲醛是一種綜合性能優(yōu)良的熱塑性工程塑料，為五大工程塑料之一。聚甲醛質(zhì)輕，比強度、比剛度與金屬類似，是工程塑料中力學性能zui接近金屬材料的一種工程塑料，被稱為“塑料中的金屬”，也被譽為“超鋼”、“賽鋼”、“奪鋼”等。聚甲醛為線性結(jié)構(gòu)聚合物，分子結(jié)構(gòu)規(guī)整性高，機械性能十分優(yōu)異，具有良好的自潤滑性、耐疲勞性、抗蠕變性、吸水性小、耐磨性、耐腐蝕性等優(yōu)良性能，同時還有較好的耐化學品性、耐電弧性、著色性等，日本寶理POMCH-20。聚甲醛在很多場合是可替代黃銅、鋅、鋁和鋼等金屬制作的部件，普遍應(yīng)用于工業(yè)機械，日本寶理POMCH-20、汽車，日本寶理POMCH-20、電子電器、日用品、管道及配件、精密儀器和建材等領(lǐng)域。聚甲醛生產(chǎn)技術(shù)是以三聚甲醛與二氧五環(huán)（或環(huán)氧乙烷）為單體。日本寶理POMCH-20</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="日本寶理POMCH-20,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288104344052/9376211.png"></div><p style="text-indent:25px">注塑影響條件料筒溫度：因為聚甲醛（POM塑膠原料）是結(jié)晶性塑料，熔料在料筒內(nèi)停留時間對于它的含晶核數(shù)量與大小均會產(chǎn)生影響，在其熔點以上的同一溫度下，熔體停留時間越長，晶核數(shù)會下降。料筒溫度通常應(yīng)控制在150～180℃，溫度不宜過高，太高會導(dǎo)致變色分解，過低則會塑化不均，影響流動性。所以在確保流動性的前提下，盡量采用較低的加工溫度和較短的受熱時間。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）強度的主要因素，模溫高，結(jié)晶時間長，有利于晶體的生長，結(jié)晶較完整，并且流動性會更好。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。日本寶理POMCH-20聚甲醛比強度和比剛性接近于金屬；拉伸強度，彎曲強度，耐蠕變性和耐疲勞性優(yōu)異。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="日本寶理POMCH-20,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288040623353/6169138.png"></div><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(yīng)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(shè)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。</p><p style="text-indent:25px">特點：均聚甲醛結(jié)晶度高，機械強度、剛性、熱變形溫度等比共聚甲醛好，共聚甲醛熔點低，熱穩(wěn)定性，耐化學腐蝕性，流動特性，加工性均優(yōu)于均聚甲醛，新開發(fā)的產(chǎn)品為超高流動（快速成型），耐沖擊和降低模具沉積牌號，也有無機填充，增強牌號。POM吸水率大于0.2%，成型前應(yīng)預(yù)干燥，POM熔融溫度與分解溫度相近，成型性較差，可進行注塑、擠出、吹塑、滾塑、焊接、粘接、涂膜、印刷、電鍍、機加工、注塑是zui重要的加工方法，成型收縮率大，模具溫度宜高些，或進行退火處理，或加入增強材料（如無堿玻璃纖維）。聚甲醛材料的熱穩(wěn)定性相對來講是很差的，它在加熱時受其溫度的影響容易分解。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="日本寶理POMCH-20,POM" src="https://tyunfile.71360.com/UploadFile/szjingsumi/637387288132771805/7721743.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(gòu)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。聚甲醛與聚乙烯相比，聚甲醛的碳氧鍵短，內(nèi)聚能密度高，密度大。日本寶理POMCH-20</p><p style="text-indent:25px">聚甲醛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。日本寶理POMCH-20</p><p style="text-indent:25px">用于注射成型、注塑成型和擠出成型的縮醛樹脂都可買到。在加工過程中重要的是不要超溫或由于產(chǎn)生甲醛而引起的嚴重超壓。聚合物在關(guān)機前應(yīng)清洗干凈，以免在啟動過程中過熱?？s醛樹脂應(yīng)在干燥的地方儲存?？s醛樹脂的表觀粘度對剪切應(yīng)力和溫度的依賴性比聚烯烴小，但是其熔體卻具有低彈性和低強度。低的熔體強度是應(yīng)用吹塑成型時存在的一個問題。對吹塑成型來說，帶有支鏈結(jié)構(gòu)的共聚物更適用。結(jié)晶速度很快，模塑后收縮可在成型后的48h內(nèi)完成。由于快速結(jié)晶很難制得透明薄膜。美國和加拿大l997年縮醛樹脂的市場需求量為3.68億lb。縮醛樹脂的應(yīng)用包括：齒輪、輥筒、管道部件、泵零件、風扇葉片、吹塑膜制的空氣溶膠容器、模制鏈輪和鎖鏈，它經(jīng)常用以直接取代金屬?？s醛樹脂主要用于注射成型，其次用于擠出板材和棒材。縮醛樹脂的低摩擦系數(shù)使之可用以制造良好的軸承。日本寶理POMCH-20</p></p><br /><p>文章來源地址: 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