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    亚洲色国产欧美日韩,国产精品午夜福利麻豆,综1合AV在线播放,无套内谢老熟女

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    有機膨潤土


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    DK3聚合物級有機粘土,有機蒙脫土


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    簡介:

    DK3聚合物級有機粘土是一種烷基季銨改性的高純度蒙脫土,主要用于UP、PS、ABS等聚合物中,原位聚合或雙螺桿熔融擠出改性。提高聚合物的力學性能,熱變形溫度、尺寸穩定性、氣體阻隔性能和阻燃性能。

    產品物性指標:

    外觀

    白色或米白色細粉體

    105揮發分

    <3%

    粒度(過200目)

    ≥98%

    比重g/cm3

    1.8

    堆積密度g/cm3

    <0.3

    XRD d001(nm)

    >2.5

    產品應用:

    用于UP、PS、ABS等聚合物改性。

    使用方法:

    原位聚合改性:在攪拌下將有機蒙脫土粉體分散于預聚體或單體中,為幫助分散可加入有機土量20-30%的高極性低分子量助分散劑如乙醇、碳酸丙烯酯(PC)等,經高剪切充分分散,然后按常規聚合或交鏈。

    雙螺桿熔融擠出改性:將有機粘土粉體與聚合物粒料充分混合(為使粉料粘附在粒料上,可先加入0.5-1%液體石蠟或相應鈦酸酯偶聯劑與粒料混合,然后再加有機土粉體混合),如果是有側加料口的雙螺桿擠出機,有機粘土也可直接從側加料口計量喂入雙螺桿擠出機中,控制各段溫度和螺桿轉速,熔融擠出,有機粘土加入量一般為3-6%。

    所用雙螺桿擠出機盡量選用長/徑比大,具有高剪切強度的螺桿結構。熔融擠出溫度不宜太高,保持聚合物熔體有較高粘度,保證聚合物在擠出過程中有較強的剪切作用,以利蒙脫土層片剝離分散。

    螺桿擠出機最好配有真空排氣系統,及時排出擠出過程中可能存在的氣體,保證擠出材料的質量。

    包裝儲存:

    外包裝牛皮紙袋,袋內采用聚乙烯薄膜袋的雙層包裝,或紙袋包裝,重量通常為25±0.25kg,或按用戶要求包裝。干燥條件下存放,溫度為0~30時,質量有效期為24個月。



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      服務熱線

      18157262332

      郵 箱

      liaoym@zjfhht.com


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