HDPE是一種由乙烯共聚生成的熱塑性聚烯烴。雖然HDPE在1956年就已推出，但這種塑料還沒(méi)達(dá)到成熟水平。這種通用材料還在不斷開(kāi)發(fā)其新的用途和市場(chǎng)。我國(guó)國(guó)內(nèi)高密度聚乙烯（這里的高密度聚乙烯不包括全密度聚乙烯裝置生產(chǎn)的高密度聚乙烯）的生產(chǎn)商有中石油、中石化、中海油三大企業(yè)，截至2006年年底，屬于中石油的高密度聚乙烯裝置有4套，即蘭州石化高密度聚乙烯裝置、大慶石化高密度聚乙烯裝置、遼陽(yáng)石化高密度聚乙烯裝置、吉林石化高密度聚乙烯裝置
       HDPE is a polyolefin produced by copolymerization of ethylene thermoplastic. Although HDPE in 1956 has been launched, but the plastic hasn't reached the mature level. This versatile material continues to develop its new uses and markets. China's domestic HDPE (high density polyethylene high density polyethylene here do not include the full density polyethylene device production) producers in the oil, Sinopec, CNOOC three large enterprises, as of the end of 2006, high density polyethylene device belongs to the oil in 4 sets, namely Lanzhou Petrochemical HDPE device, Daqing Petrochemical HDPE device, Liaoyang Petrochemical HDPE device, Jilin Petrochemical HDPE device
       高密度聚乙烯通常使用Ziegler-Natta聚合法制造，其特點(diǎn)是分子鏈上沒(méi)有支鏈，因此分子鏈排布規(guī)整，具有較高的密度。該過(guò)程在管式或釜式低壓反應(yīng)器中以乙烯為原料，用氧或有機(jī)過(guò)氧化物為引發(fā)劑引發(fā)聚合反應(yīng)。
       High density polyethylene usually use Ziegler-Natta manufacturing polymerization, which is characterized by no branched chains, therefore molecular chain arrangement of regular, have a higher density. In the process of tubular or kettle type low voltage reactor to ethylene as raw material, with oxygen or organic peroxides as initiators and polymerization.
       高密度乙烯屬環(huán)保材質(zhì)，加熱達(dá)到熔點(diǎn)，即可回收再利用。須知塑膠原料可大分為兩大類：“熱塑性塑膠”（Thermoplastic）及“熱固性塑膠”（Thermosetting），“熱固性塑膠”是加熱到一定溫度后變成固化狀態(tài)，即使繼續(xù)加熱也無(wú)法改變其狀態(tài)，因此，有環(huán)保問(wèn)題的產(chǎn)品是“熱固性塑膠”的產(chǎn)品（如輪胎），并非是“熱塑性塑膠”的產(chǎn)品（如 塑膠棧板 注:棧板在港澳被稱為“夾板”)，所以并非所有“塑膠”皆不環(huán)保。
        High density polyethylene belongs to the environmental protection material, heating to the melting point, can be recycled. For plastic materials can be divided into two categories: "thermoplastic plastic" (Thermoplastic) and "thermosetting plastic" (Thermosetting) ", thermosetting plastic" is a cured after heated to a certain temperature, even if the heating can not continue to change its state, therefore, environmental problem is the product of the "thermosetting plastic" products (such as tire), is not "thermoplastic plastic" products (such as plastic pallets note: pallets in Hong Kong and Macao is called "splint"), so not all the "plastic" are not environmental protection.