What are the types and properties of polyethylene wax?

Polyethylene wax, also known as low molecular weight polyethylene or polymer wax, is a non-toxic, low-odor, non-corrosive, white or yellowish solid in the normal sense, and its shape can be made into blocks according to needs. , flakes and powders.

At first, it was only used in production as paint additives, glazing agents, etc. With the progress of research, people use it to have high softening point, low melt viscosity, good lubricity, and good compatibility with polyolefin, and it is widely used in plastic modification and plastic masterbatch production. In addition, polyethylene wax also has some applications in battery production and textile printing and dyeing.

There are three main types of polyethylene wax on the market: polymerization polyethylene wax, cracking polyethylene wax and by-products (ie oligomers) in the production process of polyethylene.

(1) Polyethylene wax by polymerization method The polymerization method is the main method used by foreign large-scale polyethylene wax production enterprises. It is obtained by high pressure polymerization of ethylene monomer in the presence of a relatively large amount of molecular weight regulator (hydrogen). The molecular weight of the polyethylene wax produced by this method is easy to control, and the molecular weight distribution is narrow, but the cost is high. Polyethylene wax (also called synthetic wax) produced by polymerization method has pure color, low odor, good lubricity and dispersibility.

(2) Cracking polyethylene wax Cracking method is the main method for domestic production of polyethylene wax. This method has low production cost and high yield, but the molecular weight of the produced polyethylene wax is not easy to control, and the molecular weight distribution is relatively narrow. The quality of polyethylene wax (also called cracking wax) produced by cracking method is lower than that of synthetic wax, but it can basically meet the quality requirements of conventional plastic masterbatch production. Therefore, this polyethylene wax is widely used in plastic masterbatch enterprises. It is very widely used.

(3) By-products in polyethylene production In the process of producing polyethylene, there is a by-product (low molecular weight polyethylene) whose degree of polymerization is before 100~300 and the relative molecular weight is 2000~10000, which is usually called oligomerization. thing. Compared with cracked polyethylene wax, this polyethylene wax has a purer color (better whiteness) and lower odor, but has a relatively wider molecular weight distribution.

(4) Polyethylene wax produced by cracking of recycled polyethylene (ie polyethylene return wax) Due to the continuous sharp rise in oil prices, the price of plastic raw materials has continued to rise, which makes the application market of polyethylene return wax in the near future. It has come into being quickly in the past few years, especially in this year, the supply is often in short supply. Although this polyethylene wax has obvious quality defects in terms of purity, color, smell, etc., it still occupies part of the middle and low-end user market with its strong price advantage.

(5) Composite polyethylene wax This type of polyethylene wax has a history of nearly ten years in China, and typical production enterprises are mainly concentrated in Chengdu, Sichuan, Jiangyin, Jiangsu, Qingdao, Shandong and other places. The composition of compound polyethylene wax is usually composed of oligomers, low-quality paraffin wax and stearic acid, so this kind of polyethylene wax has strong competitiveness in price, and its price is relatively high. Adjust space. Compared with normal polyethylene wax, this polyethylene wax has a wide melting point range, high content of low molecular (or small molecule) components, and fluctuating odor. Its dispersibility and lubricity are significantly different from those of normal polyethylene wax. .

Jiangmen Shengpeng Chemical Industry Co., Ltd. specializes in the production of various chemical raw materials: coating matting agent, thixotropic thickener, special silica for glass glue, special silica for mixing rubber, DMC, dimethyl silicone oil, 107 room temperature vulcanization Silicone rubber, hydroxy silicone oil, hydrogen-containing silicone oil, vinyl silicone oil, methyl capping agent, zinc stearate, calcium stearate, magnesium stearate and other products, all product indicators meet or exceed national standards. The products are widely used in PU, NC, PE paint and other wood coatings, automotive coatings, marine coatings, powder coatings, textiles, cosmetics, rubber products and other fields. The product quality is guaranteed, and the SGS test results meet the EU ROHS directive standard. We sincerely hope to achieve more extensive cooperation with domestic and foreign customers, and we are willing to work together with you to create a better future!

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