久久国产亚洲美女久久_欧美αv日韩aⅴ天堂αv视频_亚洲视频在线观看一区二区三区_天天夜夜人人国产欧美综合_亚洲av无码国产精品午夜_无码高清中文少妇_在线观看视频一区精品视频_免费少妇A级毛片人妻系列无码_在线A一级毛片免费完整视频_国产精品一区二区正在播放

Ultra-high molecular weight polyethylene

Ultra-high molecular weight polyethylene

Ultra-high molecular weight polyethylene (UHMWPE) is a thermoplastic engineering plastic with excellent comprehensive properties. It is usually composed of ultra-high molecular weight polyethylene powder with an average molecular weight of more than 1.5 million and appropriate additives (such as glass beads, glass fiber, mica, Talcum powder, etc. can improve hardness, stiffness and temperature resistance; molybdenum disulfide, silicone oil and special wax can reduce the friction factor, thereby further improving self-lubrication; carbon black or metal powder can improve antistatic properties, electrical conductivity and heat transfer. ; Flame retardant or masterbatch, boron carbide powder and lead powder, etc.) are filled, blended and modified, and then sintered and pressed under high temperature and high pressure. Its basic characteristics are wear resistance, impact resistance, self-lubrication, corrosion resistance, and With comprehensive properties such as impact energy absorption, low temperature resistance, hygienic and non-toxic, not easy to adhere, not easy to absorb water, and low density, it is widely used in Conveying, food, papermaking, textiles, construction, chemical industry, coal mines, power plants, ports, sports, medical care, etc. industry.

產(chǎn)品特點(diǎn)
      超高分子量聚乙烯耐磨損性能居塑料之首,且分子量越大,材料的耐磨性和抗沖擊性越高;
      超高分子量聚乙烯的沖擊強(qiáng)度是現(xiàn)有塑料中的高值,即使在—70℃時(shí)仍有相當(dāng)高的沖擊強(qiáng)度;
      自潤滑;
      超高分子量聚乙烯吸水率很低。因此,其物理機(jī)械性能與使用的工作條件中的濕度因素?zé)o關(guān);
      超高分子量聚乙烯化學(xué)性穩(wěn)定,在一定的溫度,濃度范圍內(nèi)能耐酸、堿、鹽等各種腐蝕性介質(zhì)及有機(jī)溶劑的腐蝕;
      超高分子量聚乙烯無味、無嗅,本身無腐蝕性,具有生理循環(huán)性和生理適應(yīng)性.
      不粘附性;
      高密度聚乙烯分子量超過50萬時(shí),脆化溫度降至—140℃。超高分子量聚乙烯甚至可以在液氮作用下,其使用溫度可達(dá)—269以下℃,仍有一定的機(jī)械強(qiáng)度。
超高分子量聚乙烯的應(yīng)用:
      襯里:料倉、料斗、耐磨耗板、托架、溜槽等回流裝置,滑動(dòng)面,滾筒等;
      食品機(jī)械:護(hù)軌,星形輪,導(dǎo)向齒輪、輥輪,軸承襯瓦等;
      造紙機(jī)械:吸水箱蓋板,導(dǎo)流板,刮水板,水翼;
      化學(xué)工業(yè):密封填板、填密料、真空模盒,泵部件、軸承襯瓦、齒輪、密封結(jié)合面;
      其它:農(nóng)用機(jī)械、船舶零件,電鍍工業(yè),較低溫機(jī)械部件等。

超高分子量聚乙烯
      固定方法及所用元件,應(yīng)根據(jù)被裝物料,性能環(huán)境,考慮設(shè)施條件,技術(shù)安裝及使用機(jī)械性能來選定。
      1、沉頭膨脹螺栓固定法
      以下好料的板材先 固定孔,與倉壁巾緊,作好打孔標(biāo)記取下板材后,用沖擊合金鉆尖打混凝土倉壁孔,孔徑要與膨脹螺栓、膨脹套緊配。板材孔與膨用張栓螺桿緊配。
      2、不銹鋼沉頭螺栓固定法
      此法適應(yīng)鋼壁,先根據(jù)板形,打好固定孔與鋼壁配作,外加緊固螺母固緊即可,也可把螺紋切入鋼壁減省螺帽。

應(yīng)用場合

襯里材料

介質(zhì)

應(yīng)用結(jié)果

氧化鐵礦貯斗

超高分子量聚乙烯板材

氧化鐵

顆粒度:80% <30

20%細(xì)粉<100

產(chǎn)量:13000噸/天

 

燒結(jié)廠的礦石貯倉

超高分子量聚乙烯板材

礦石

顆粒度0-1,水分4%-7%

 

煤加工輸送溜槽

超高分子量聚乙烯板材

原煙煤

顆粒度:0-0.25-0-0.5

灰份:25%

硫:4%

產(chǎn)量:600噸/天

 

煤碳輸送料倉

超高分子量聚乙烯板材

帶有煤灰、煤漿、煤炭

顆粒度0-1/4

產(chǎn)量:3000噸/天

 

潮濕的硫酸鈣溜槽

超高分子量聚乙烯板材

濕的硫酸鈣

顆粒度:泥漿狀

 

船倉車箱的襯里

超高分子量聚乙烯板材

 




Follow us

Scan and follow us