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<span id="hits"><a href='http://www.ewveco.live/news/73.html'>http://www.ewveco.live/news/73.html</a></span> </div> <div class="NewsView-title-Content"> 塑料成品在热加工和运用进½E‹ä¸­åQŒé«˜åˆ†å­é“‘Ö› ä¸ºå—到外能的效果而开裂,åQŒäؓ了阻¾~“è¿™¿Uè€åŒ–表象ž®±é¡»å¢žåŠ ä¸ä¸€æ ïLš„防老化<a href="http://www.ewveco.live/" target="_blank">增塑å‰?/a>åQŒå¦‚下所½Cºï¼š<br /> åQ?åQ‰æŠ—氧剂 能抑制或推迟高聚物氧化进½E‹çš„助剂¿UîCؓ抗氧剂。高聚物的氧化进½E‹æ˜¯ä¸€¿Uè‡ªå‚¬åŒ–的连锁反应,是致使老化的重要因素ã€?br /> 抗氧剂有代替酚类、芳香族胺类、亚¼‚·é…¸é…¯ç±»ã€å«¼‹«é…¯¾cȝ­‰å‡ ç§åŒ–合物ã€?br /> åQ?åQ‰çƒ­å®‰ç¨³å‰?首要用于聚氯乙烯及其å…Þpšç‰©ï¼Œèšæ°¯ä¹™çƒ¯åœ¨çƒ­åŠ å·¥˜q›ç¨‹ä¸­ï¼Œåœ¨æŠµè¾„¡†”融活动之前就有少量的分子铑ּ€è£‚而放出氯化氢åQŒè€Œæ°¯åŒ–氢是一¿UåŠ å¿«åˆ†å­é“¾å¼€è£‚连锁反应的催化剂,所以不及时打扫刚分化出来的氯化氢就会高分子链一贯裂解成ä¸ÞZ½Žåˆ†å­åŒ–合物,致ä‹É使聚氯乙烯这¾cÕd¡‘料不能成型加工,如果在聚氯乙烯中参加恰当的碱性物质则ž®Þpƒ½ç«‹åˆ»ä¸­å’Œåˆ†åŒ–出来的氯化氢åQŒæŠµè¾¾ä¸Š˜q°æ„å›¾ï¼Œ˜q™å°±æ˜¯çƒ­å®‰ç¨³å‰‚的效果原理ã€?br /> <p> åQ?åQ‰ç‚÷外线吸收剂高聚物受ç‚÷外线照耀会发生光降解。ç‚÷外线吸收剂是一¾c»èƒ½å¸æ”¶ç´«å¤–¾U¿æˆ–减少紫外¾U‰K€å°„效果的化学物质,它能˜q›è¡Œèƒ½é‡å˜æ¢åQŒè¡Œž®†é«˜èƒ½é‡çš„ç‚÷外光变换成以热的æ–ÒŽ³•æˆ–无损坏性的较长光æ‡L的方法把能量释放出来åQŒç„¶åŽç»´æŠ¤é«˜èšç‰©å…é­ç´«å¤–¾U¿æŸåã€?</p> <p style="text-align:center;"> <img src="/uploads/image/20181018/20181018175100_2591.jpg" alt="" /> </p> åQ?åQ‰å˜ä»·é‡‘属离子抑制剂不少高聚物会因变价金属离子的存在而加快老化的进½E‹ï¼Œå˜ä­h金属¼›Õd­å¦‚铜、锰、铁¼›Õd­çš„è¿™¿Uå‚¬åŒ–氧化效果对聚烯烃(特别是聚丙烯åQ‰åª„响很大。抑制变价金属离子的催化氧化‹zÀL€§ï¼Œåœ¨äºŽæŠŠè¿™äº›ç¦»å­è”合到一些化合物中去åQŒåœ¨˜q™äº›åŒ–合物中价键是不能搬˜qæˆ–很难搬运的ã€?br /> <p> åQ?åQ‰å…‰å±è”½å‰?光屏蔽剂是一¾c»èƒ½ž®†æœ‰å®³äºŽé«˜èšç‰©çš„å…‰æ‡L吸收åQŒç„¶åŽå°†å…‰èƒ½å˜æ¢æˆçƒ­èƒ½æ•£ž®„出åŽÀLˆ–ž®†å…‰æ³¢åž®„掉åQŒç„¶åŽå¯¹é«˜èšç‰©è“v到屏蔽效果的物质。光屏蔽剂首要有炭黑、氧化锌、钛白粉、锌钡白½{‰é»‘色或白色之能吸收或反ž®„光波的物质ã€?</p> <p> 以上便是防老化<a href="http://www.ewveco.live/zsj/" target="_blank">增塑å‰?/a>的相兛_ˆ†äº«~ </p> </div> <div class="fanhui"></div> <div class="NewsView-title-Share"> <!-- Baidu Button BEGIN --> <div id="bdshare" class="bdshare_t bds_tools_32 get-codes-bdshare"> <a class="bds_qzone" title="分äín到QQ½Iºé—´" href="#"></a> <a class="bds_tsina" title="分äín到新‹¹ªå¾®å? 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