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| HDPE | 日本聚烯烴 軒源塑膠供應(yīng) | HD KE041L |
High density polyethylene (High Density Polyethylene, referred to as "HDPE"), is a high degree of crystallinity, non-polar thermoplastic resin. The original state of HDPE milky white appearance, with a certain degree of translucent at thin section. PE has excellent chemical resistance properties with the most life and industry. Some kinds of chemicals will produce chemical corrosion, such as corrosive oxidizer (nitric acid) (Er Jiaben), aromatic hydrocarbons and halogenated hydrocarbons (carbon tetrachloride). The polymer is not hygroscopic and has good waterproof steam, and can be used for packing. HDPE has good electrical properties, especially the insulation of high dielectric strength, so it is suitable for wire and cable. Medium to high molecular weight grades with excellent impact resistance, at room temperature even in the -40F low temperature so.
| HDPE | 日本聚烯烴 軒源塑膠供應(yīng) | HD KE041L |
| HDPE | 日本聚烯烴 軒源塑膠供應(yīng) | HD KE041L |
高密度聚乙烯通常使用Ziegler-Natta聚合法制造，其特點是分子鏈上沒有支鏈，因此分子鏈排布規(guī)整，具有較高的密度。該過程在管式或釜式低壓反應(yīng)器中以乙烯為原料，用氧或有機過氧化物為引發(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)，加熱達到熔點，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)加熱也無法改變其狀態(tài)，因此，有環(huán)保問題的產(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.
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