九号彩票注册

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各個季節的變化會對水晶ab膠水固化速度及強度影響

雙組份聚氨酯膠粘劑出色的復合效果與多方面條件有關,其中工作環境氣溫的變化也是很重要的影響要素。也就是說,跟著時節氣候的改動,為了取得理想的復合效果,有必要對膠粘劑運用工藝作進行某些微調。

       簡單地說,影響復合的時節氣候變化也就是環境濕度、溫度兩大指標的變化:詳細而言在春夏兩季特別是梅雨時節,空氣的相對濕度較大,以至可到達飽和而秋冬兩季則空氣枯燥、濕度小;就氣溫而言,夏季比冬季高出許多,兩者之間最大可相差將近30~40℃(此處是以室內無暖氣的南方地域為例來作比擬)。


九号彩票注册 DUIYUZHEXIECHAYIRUBUDUOJIAZHUYI,HENKENENGZAIJIAOFUHESHIHUICHANSHENGXIALIEWENTI:KONGQICHAOSHISHI,JIAOZHANJIJINGCHANGGUHUABUCHEDI,YEJIUSHIGANBUTOU,CANLIUNIANXINGDA,YANZHONGDESHENZHIKEZAIDUIFUHEMOZUOBOLISHIGUANCHADAOYOULASIDEXIANXIANG,TEBIEDANGBOMOBENSHENXICHAOXINGJIAODA,BIRUYONGNILONGMOFUHESHIJIUGENGRONGYICHANSHENGZHEZHONGXIANXIANG;

       其次,潮濕的空氣會在上膠網紋輥上產生冷凝,從而將水分帶入到膠盆中,隨著時間的推移,粘合劑逐漸由透明變得混沌、發白,以至失去粘作用九号彩票注册;濕熱高溫亦使得膠粘劑的保存比較困難,配好的工作膠液如當天用不完,放置過夜之后,經常會發白結塊,形成凝膠(果凍狀)。

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       LINGWAI,ZHANHEJIDELIANGGEZUFENZHIJIANDEJIAOLIANGUHUAFANYING,ZAIWENDUDISHIFANYINGSUDUMAN,WENDUGAOSHIFANYINGSUDUKUAI,ZHEYEQIAQIASHIWEIHEYAOYOUSHUHUAFANGDEYUANYIN(JIAKUAIGUHUAFANYINGSUDU,TIGAOSHENGCHANXIAOLV)。

       ZHENDUIZHEYANGDEQINGKUANG,ZAISHIYONGSHUANGZUFENJUANZHIJINXINGFUHESHIKEGENJUHUANJINGBIANHUAZUOYIXIAYIXIEDIAOZHENG:RUGUOKONGQICHAOSHI,QIWENPIANGAO,JIANGGUHUAJIDEYONGLIANGSHIDANGTIGAO10%~20%,YIMIBUSHUIFENDUIQIDEXIAOHAO;JINGCHANGYONGGANSHUANGDEMIANSHAHUOBUSUIXIDIAOFUHEJISHANGLENGNINGDESHUIDI,FANGZHIQILUORUJIAOPENNEI;YONGBUWANDEGONGZUOJIAOYEKETIANJIASHAOLIANGRONGJIXISHI,RANHOUMIFENGBAOGUAN,RUGUOTIAOJIANYUNXU,KEZHIYUXIAOXINGLENGJUNEILENGZANGBAOGUAN,ZHEYANGXIAOGUOGENGJIA,XIACIZAIYONGSHI,ZAIMIBIQINGKUANGXIAJIEDONG,BINGYUXINPEIDEGONGZUOJIAOYEHUNHESHIYONG。

       當冬季氣溫偏低時,配制工作膠液可適當多加一些溶劑以降低體系粘度,改善流平分散性,同時也減少了工作時膠盆內氣泡的產生。但這樣做工作膠液的濃度會有所降低,如不欲改變工作濃度,則可以用少量的丙酮取代部分醋酸乙酯,即使用丙酮與醋酸乙酯的混合溶劑來作為稀釋劑,兩者的比例可為113:1。此外,冬季低溫時可把熟化房的溫度設置稍為調高,以保證其實際溫度能達到要求,以免影響熟化效果。

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