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高密度聚乙烯（High Density Polyethylene，簡(jiǎn)稱(chēng)為“HDPE”），是一種結晶度高的熱塑性樹(shù)脂。原態(tài)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(yōu)良的耐大多數生活和工業(yè)用化學(xué)品的特性。某些種類(lèi)的化學(xué)品會(huì )產(chǎn)生化學(xué)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(xiàn)電纜。中到高分子量等級具有較好的抗沖擊性，在常溫甚至在-40F低溫度下均如此。

使用HDPE制成的防滲土工膜具有普通防水材料無(wú)法比擬的防滲效果和化學(xué)穩定性。這種防滲土工膜的抗老化、抗紫外線(xiàn)、抗分解能力都比其他材料的強。材料使用壽命達50-70年，為環(huán)境防滲提供很好的材料保證。而且重要的是這種材料采用新型技術(shù)提高了防滲效果，但生產(chǎn)工藝更加科學(xué)、速捷、所以產(chǎn)品成本反而低于傳統防水材料，經(jīng)實(shí)際測算采用HDPE防滲膜的一般工程要節約成本50左右。

HDPE (High Density Polyethylene, referred to as "HDPE"), is a kind of High crystallinity, nonpolar thermoplastic resin. Square one HDPE appearance has milk-white, in a small section in a certain degree of translucent. PE has excellent resistance to most of the characteristics of life and industrial chemicals. Some kinds of chemical produce chemical corrosion, such as corrosive oxidant (nitric acid), aromatics (xylene) and halogenated hydrocarbon (CTC). The polymer is not hygroscopic and has good waterproof steam, can be used for packaging purposes. HDPE has the very good performance, especially the insulation dielectric strength is high, so that it is very suitable for wire and cable. Medium to high molecular weight grades has excellent impact resistance, even at room temperature under 40 f low temperature so.Using HDPE .