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        塑料吹膜機的常用材料
        來源:華瑞機械 時間:2015/3/23

        塑料吹膜機的常用材料:

        (1)HDPE 折疊

        高密度聚乙烯(High Density Polyethylene,簡稱為“HDPE”),是一種結晶度高、非極性的熱塑性樹脂。原態HDPE的外表呈乳白色,在微薄截面呈一定程度的半透明狀。PE具有優良的耐大多數生活和工業用化學品的特性。某些種類的化學品會產生化學腐蝕,例如腐蝕性氧化劑(濃硝酸),芳香烴(二甲苯)和鹵化烴 (四氯化碳)。該聚合物不吸濕并具有好的防水蒸汽性,可用于包裝用途。HDPE具有很好的電性能,特別是絕緣介電強度高,使其很適用于電線電纜。中到高分子量等級具有極好的抗沖擊性,在常溫甚至在-40F低溫度下均如此。

        (2)LDPE 折疊

        低密度聚乙烯度聚乙烯(LDPE)是一種塑料材料,它適合熱塑性成型加工的各種成型工藝,成型加工性好。 LDPE主要用途是作薄膜產品,還用于注塑制品,醫療器具,藥品和食品包裝材料,吹塑中空成型制品等。

        (3)LLDPE 折疊

        線性低密度聚乙烯,在結構上不同于一般的低密度聚乙烯,因為不存在長支鏈。LLDPE的線性度取決于LLDPE和LDPE的不同生產加工過程。LLDPE通常在更低溫度和壓力下,由乙烯和高級的a烯烴如丁烯、己烯或辛烯共聚合而生成。共聚過程生成的LLDPE聚合物具有比一般LDPE更窄的分子量分布,同時具有線性結構使其有著不同的流變特性。

          

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