ï»?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 防撞的塑料æˆö沫是怎么做的 - 贵州è´ëŠ æ³¡æ²«å¡‘制品有限公å?/title> <meta name="Keywords" content=""/> <meta name="viewport" content="width=1380" /> <link href="/template/YXX0096(cms)/css/aos.css" rel="stylesheet" /> <link href="/template/YXX0096(cms)/css/style.css" rel="stylesheet" /> <link href="/template/YXX0096(cms)/css/common.css" rel="stylesheet" /> <script src="/template/YXX0096(cms)/js/jquery.js"></script> <script src="/template/YXX0096(cms)/js/jquery.superslide.2.1.1.js"></script> <script src="/template/YXX0096(cms)/js/common.js"></script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><font id="v371r"></font><span id="v371r"><big id="v371r"></big></span><output id="v371r"></output><form id="v371r"></form><delect id="v371r"><del 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href='http://www.hakuhan-s.com/news/240.html'>http://www.hakuhan-s.com/news/240.html</a></span> </div> <div id="article" class="ArticleTencont"> <p> 防撞的塑æ–?a href="/supply/24.html" target="_blank">泡沫</a>是怎么做的,EPS泡沫是一¿Uçƒ­å¡‘性材料,每立方米体积内含æœ?00-600万个独立密闭气æˆöåQŒå†…含空气的体积ä¸?8%以上åQŒç”±äºŽç©ºæ°”的热传导性很ž®ï¼Œä¸”又被封闭于泡沫塑料中而不能对‹¹ï¼Œæ‰€ä»¥EPS是一¿Uéš”热保温性能非常优良的材料ã€?</p> <p> 一、塑料的定义 </p> <p> 塑料是以树脂ä¸ÞZ¸»è¦æˆåˆ†ï¼Œåœ¨ä¸€å®šæ¸©åº¦å’ŒåŽ‹åŠ›ä¸‹å¡‘造成一定åŞçŠÓž¼Œòq¶åœ¨å¸¸æ¸©ä¸‹èƒ½ä¿æŒæ—¢å®šå½¢çŠ¶çš„高分子有机材料ã€?</p> <p> 树脂是指受热旉™€šå¸¸æœ‰è{化或熔融范围åQŒè{化时受外力作用具有流动性,常温下呈固态或半固态或液态的有机聚合物,它是塑料最基本的,也是最重要的成分。广义地è®ÔŒ¼Œåœ¨å¡‘料工业中作äؓ塑料基本材料的ä“Q何聚合物都可¿UîCؓ树脂ã€?</p> <p> 二、塑料的分类 </p> <p> 塑料目前ž®šæ— ¼‹®åˆ‡çš„分¾c»ï¼Œä¸€èˆ¬åˆ†¾cÕd¦‚下:1.按塑料的物理化学性能分热塑性塑料:在特定温度范围内能反复加热èÊY化和冷却¼‹¬åŒ–的塑料。如聚乙烯塑料、聚氯乙烯塑料ã€?</p> <p> 热固性塑料:因受热或其它条äšg能固化成不熔不溶性物料的塑料。如酚醛塑料、环氧塑料等ã€?</p> <p> 2.按塑料用选分 </p> <p> 通用塑料åQ?-般指产量大、用途广、成型性好、ä­h廉的塑料。如聚乙烯、聚丙烯、聚氯乙烯等ã€?</p> <p> 工程塑料åQ? -般指能承受一定的外力作用åQŒåƈ有良好的机械性能和尺寸稳定性,在高、低温下仍能保持其优良性能åQŒå¯ä»¥ä½œä¸ºå·¥½E‹ç»“æž„äšg的塑料。如ABS、尼龙、聚矄¡­‰ã€?</p> <p> 特种塑料åQ?-般指å…ähœ‰ç‰¹ç§åŠŸèƒ½(如耐热、自润滑½{?åQŒåº”用于ç‰ÒŽ®Šè¦æ±‚的塑料。如氟塑料、有机硅½{‰ã€?</p> <p> 3.按塑料成型方法分 </p> <p> 模压塑料åQšä¾›æ¨¡åŽ‹ç”¨çš„树脂混合料。如一般热固性塑料ã€?</p> <p> 层压塑料åQšæŒ‡‹¹¸æœ‰æ ‘脂的纤¾l´ç»‡ç‰©ï¼Œå¯ç»å åˆã€çƒ­åŽ‹ç»“合而成为整体材料ã€?</p> <p> 注射、挤出和吹塑塑料åQ?-般指能在料筒温度下熔融、流动,在模具中˜q…速硬化的树脂混合¿U‘。如一般热塑性塑料ã€?</p> <p> ‹¹‡é“¸å¡‘æ–™åQšèƒ½åœ¨æ— åŽ‹æˆ–½EåŠ åŽ‹åŠ›çš„情况下åQŒå€¾æ³¨äºŽæ¨¡å…·ä¸­èƒ½ç¡¬åŒ–成一定åŞ状制品的液态树脂æ؜合料。如MCž®¼é¾™ã€?</p> <p> 反应注射模塑料:一般指液态原材料åQŒåŠ åŽ‹æ³¨å…¥æ¨¡è…”内åQŒä‹É其反应固化制得成品。如聚æ°}脂类ã€?</p> <p> 4.按塑料半制品和制品分 </p> <p> 模塑¾_‰ï¼šåˆç§°å¡‘æ–™¾_‰ï¼Œä¸»è¦ç”Þqƒ­å›ºæ€§æ ‘è„?如酚é†?和填料等¾lå……分æ؜合、按压、粉¼„Žè€Œå¾—。如酚醛塑料¾_‰ã€?</p> <p> 增强塑料åQšåŠ æœ‰å¢žå¼ºææ–™è€ŒæŸäº›åŠ›å­¦æ€§èƒ½æ¯”原树脂有较大提高的一¾cÕd¡‘æ–™ã€?</p> <p> 泡沫塑料åQšæ•´ä½“内合有无数微孔的塑料ã€?</p> <p> 薄膜åQšä¸€èˆ¬æŒ‡åŽšåº¦åœ¨O.25毫米以下的åã^整而柔软的塑料制品ã€?</p> <p> 三、塑料的基本性能 </p> <p> 1.质轻、比强度高。塑料质轻,一般塑料的密度都在0.9~ 2.3å…?厘米3之间åQŒåªæœ‰é’¢é“çš„1/8~1/4、铝çš?/2左右åQŒè€Œå„¿Uæˆö沫塑料的密度更低åQŒçº¦åœ?.01~ O.5å…?厘米3之间。按单位质量计算的强度称为比强度åQŒæœ‰äº›å¢žå¼ºå¡‘料的比强度接˜q‘甚臌™¶…˜q‡é’¢æã€‚例如合金钢材,其单位质量的拉äŽ×强度ä¸?60兆帕åQŒè€Œç”¨çŽÈ’ƒ¾U¤ç»´å¢žå¼ºçš„塑料可辑ֈ°170~ 400兆帕ã€?</p> <p> 2.优异的电¾lç¼˜æ€§èƒ½ã€‚几乎所有的塑料都具有优异的ç”늻¾~˜æ€§èƒ½åQŒå¦‚极小的介甉|Ÿè€—和优良的耐电弧特性,˜q™äº›æ€§èƒ½å¯ä¸Žé™¶ç“·åª²ç¾Žã€?</p> <p> 3.优良的化学稳定性能。一般塑料对酸碱½{‰åŒ–学药品均有良好的耐腐蚀能力åQŒç‰¹åˆ«æ˜¯èšå››æ°Ÿä¹™çƒ¯çš„耐化学腐蚀性能比黄金还要好åQŒç”šè‡Œ™ƒ½è€?王水"½{‰å¼ºè…èš€æ€§ç”µè§£è´¨çš„腐蚀åQŒè¢«¿UîCؓ"塑料çŽ?ã€?</p> <p> 4.减摩、耐磨性能好。大多数塑料å…ähœ‰ä¼˜è‰¯çš„减摩、耐磨和自润滑ç‰ÒŽ€§ã€‚许多工½E‹å¡‘料制造的耐摩擦零件就是利用塑料的˜q™äº›ç‰ÒŽ€§ï¼Œåœ¨è€ç£¨å¡‘料中加入某些固体润滑剂和填料时åQŒå¯é™ä½Žå…¶æ‘©æ“¦ç³»æ•°æˆ–˜q›ä¸€æ­¥æé«˜å…¶è€ç£¨æ€§èƒ½ã€?</p> <p> 5.透光及防护性能。多数塑料都可以作äؓ透明或半透明制品åQŒå…¶ä¸­èšè‹¯ä¹™çƒ¯å’Œä¸™çƒ¯é…”R…¯¾cÕd¡‘料象çŽÈ’ƒä¸€æ ·é€æ˜Žã€‚有机玻璃化学名¿UîCؓ聚甲åŸÞZ¸™çƒ¯é…¸ç”²é…¯åQŒå¯ç”¨ä½œèˆªç©ºçŽÈ’ƒææ–™ã€‚聚氯乙烯、聚乙烯、聚丙烯½{‰å¡‘料薄膜具有良好的透光和保暖性能åQŒå¤§é‡ç”¨ä½œå†œç”¨è–„膜。塑料具有多¿Ué˜²æŠ¤æ€§èƒ½åQŒå› æ­¤å¸¸ç”¨ä½œé˜²æŠ¤ä¿è£…用品åQŒå¦‚塑料薄膜、箱、桶、瓶½{‰ã€?</p> <p> 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