The melting characteristics of high-density polyethylene have been shown to be dependent on molecular weight and molecular weight distribution as well as on annealing and crystallizing history. The phenomenon of double melting endotherms is explained on the basis of a molecular weight fractionation ...
PE (Polyethylene) is easy to operate on and cheap, but it has a verylowmelting pointandare prone to physical damage. ja-harmonic.com ja-harmonic.com 然而考慮到它們的物理構造卻是十分重要;例如,發燒線材很多時會使用PE(Polyethylene, 聚乙烯),雖然容易加工並且便宜,但它有著很低的熔點並且容易受損。
For high density polyethylene (HDPE), a concentration of nitrogen at the polymer melting point of 10.4–35.7 mL(SATP) g(polymer) −1, in the pressure interval of 65–315 MPa, was calculated. 展开 关键词: Polyethylene Melting point Compressed gases High pressure DTA ...
It was further found that when an oriented sample is completely etched, it undergoes fusion at the normal melting temperature of the unoriented polymer. All these findings point to the conclusion that the changes in the melting behavior of high-density polyethylene are brought about essentially by...
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We have examined the influence which sample geometry has on the melting point of isothermally melt crystallized polyethylene. The peak positions of curves obtained using a Perkin-Elmer DSC were used as the apparent melting points (Tm). With a constant sample weight (ca. 0.05 mg), we observed ...
below the melting point of the high crystalline polyolefine film. The linear highly crystalline polyolefine may be polypropylene and the coating polymer may be polyethylene having a density of less than 0.94 gram per cubic centimetre. ... Henderson, William E.,Toy, Gerald R.,W Sacks - US 被...
Chemical recycling of plastic wastes made from polyethylene (LDPE and HDPE) and polypropylene (PP) The recycling of either model polymers or waste products based on low-density polyethylene (LDPE), high-density polyethylene (HDPE) or polypropylene (PP) i... D.S. Achillas,C Roupakias,P ...
PROBLEM TO BE SOLVED: To obtain a high-melting and low-density polyethylene resin retaining good molding processability, high transparency, flexibility and chemical resistance essential to a polyethylene resin produced by a high-pressure radical polymerization method and improved in heat resistance. ;SOLU...