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class="n_lb"> <ul> <li><a href="/news/gsxw/">公司新闻</a></li> <li><a href="/news/hydt/">行业动æ€?/a></li> </ul> </div> </div> <div class="n_right1"> <div class="mbx_nav1"> <span>新闻详情</span> <div class="location"> <a href="/">首页</a> > <a href="/news/hydt/">行业动æ€?/a> > 详细内容 </div> </div> <div class="clear"></div> <div class="content"> <div class="pro_detail"> <h1 class="text-center">聚æ°}酯滚轮材料造成老化的原因是什么?</h1> <p class="n_para text-center">来源åQ?a href='http://www.psicodm.com/news/295.html'>http://www.psicodm.com/news/295.html</a>  å‘布旉™—´åQ?019-11-21</p> <div class="p_detail"> <p><span style="font-size:16px;"><a target="_blank" href="http://www.psicodm.com/news/295.html"><b><a href="http://www.psicodm.com/" target="_blank" style="font-weight:bold">聚æ°}酯滚è½?/a></b>材料造成老化的原因是什么?</a></span><br /> <span style="font-size:16px;"><a href="http://www.psicodm.com/jazgl/" target="_blank">聚æ°}酯滚è½?/a>材料是一¿Uååº”性聚合物材料。聚氨酯滚轮材料制成的聚氨酯辊筒å…ähœ‰é«˜å¼ºåº¦ã€é«˜¼‹¬åº¦½{‰ç‰¹ç‚V€‚聚氨酯滚轮在ä‹É用中的老化现象ž®†åœ¨ä¸‹é¢è§£é‡Šã€?/span><br /> <span style="font-size:16px;">聚æ°}酯辊½{’具有高强度、高抗撕裂性等优点。能够承受高压和高湿度的生äñ”环境。聚氨酯滚轮的硬度指标非常宽åQŒä»ŽHSA 15到HSD 80不等åQŒå¯ä»¥æ»¡­‘³ä¸åŒç±»åž‹å°åˆähœºå¯¹èƒ¶è¾Šç¡¬åº¦çš„要求。但是,˜q˜åº”特别注意其储存,不要乱扔或承受很大压力,以防止辊芯偏斜或弯曲åQŒä»Žè€Œç¡®ä¿è¾ŠèŠ¯çš„正常使用ã€?/span><br /> <span style="font-size:16px;">通常åQŒæ–°åˆ‰™€ çš„聚æ°}酯滚轮的内部¾l“构不够½E›_®šã€‚如果立åÏxŠ•å…¥ä‹É用,聚æ°}酯滚轮的使用寿命ž®†å—到媄响。因此,新制造的聚æ°}酯滚轮应在投入ä‹É用前攄¡½®ä¸€ŒD‰|—¶é—ß_¼Œä»¥ä¿æŒå…¶ç›¸å¯¹½E›_®šæ€§ã€‚è¿™æ øP¼Œå¯ä»¥å¢žåŠ èƒ¶ä½“的韧性,从而提高耐久性效果。聚氨酯滚轮材料的橡胶分子结构和Š™¡èƒ¶åˆ†å­ä¸»é“¾ä¸­çš„双键影响Š™¡èƒ¶çš„老化。当分子主链含有双键æ—Óž¼ŒåŒé”®çš„碳原子上的¼„Ïx°¢é”®çš„¼›»è§£èƒ½éžå¸æ€½ŽåQŒåƈ且容易被氧化˜q‡ç¨‹ä¸­äñ”生的˜q‡æ°§åŒ–物自由åŸÞZ»Žæ°¢ä¸­å¸¦èµ°è€ŒåŞ成自由基。此æ—Óž¼Œè‡ªç”±åŸºç¢³åŽŸå­ä¸Šçš„¼„Ïx°¢é”®å’Œ¼„³é”®çš„离解能非常低,òq¶ä¸”可以被非å¸æ€½Žçš„能量中断,å¯ÆD‡´æ°§åŒ–老化。同æ—Óž¼Œè‡­æ°§ä¼šæ”»å‡ÀL©¡èƒ¶çš„不饱和键åQŒè¿›è¡Œäº²ç”µåŠ æˆååº”,å¯ÆD‡´è‡­æ°§è€åŒ–反应。因此,Š™¡èƒ¶åˆ†å­é“¾ä¸­çš„双键越多,Š™¡èƒ¶ä¸­çš„薄弱环节­‘Šå¤šåQŒæŠ—老化性越低ã€?/span><br /> <p> <span style="font-size:16px;">本发明聚氨酯辊筒长期使用后不易硬化老化åQŒå…·æœ‰è‰¯å¥½çš„抗撕裂性、回å¼ÒŽ€§å’Œä¼˜å¼‚的耐磨性,使用寿命长,易于储存åQŒé•¿æœŸå‚¨å­˜åŽä¸ä¼šå½±å“ä½¿ç”¨æ•ˆæžœã€?/span> </p> <p style="text-align:center;"> <span style="font-size:16px;"><img style="max-width:100%;" src="/uploads/image/20191121/20191121110816_4755.png" alt="" /><br /> </span> </p> <br /> 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