Wuhan handern filled and reinforced plastic example
DATE：2020/7/14 8:47:58 / READ： / SOURCE：This station
Wuhan handern filled and reinforced plastic example
1. Random polypropylene filled masterbatchRandom polypropylene filled masterbatch (also known as APP masterbatch) is a granular filler mainly composed of random polypropylene and calcium phosphate as a by-product of the production of isotactic polypropylene. Because of its excellent technical economy, it has been successfully applied in my country. Leading applications include the production of polypropylene straps, tear film, monofilament woven bags, polyethylene hollow barrels, pesticide bottles, imitation gypsum hollow copper products, polypropylene electric dials and other electrical accessories, hard tubes, and PVC soles, etc. More than twenty products. www.handern.com non-woven equipment
Random polypropylene has only been used in certain products in the past, most of which were burned as waste, so the application of AP has greater economic benefits. www.handern.com non-woven equipment
(1) Raw materials used for random polypropylene filled masterbatch
① The aggregation state of random polypropylene resin is a typical amorphous structure, so the volume shrinkage of the melt during cooling and solidification is small, the adhesion between the interface with the inorganic filler is good, and the filler is covered Strong ability, which is conducive to the uniform dispersion and stability of the filling system. In addition, the random polypropylene resin begins to melt at about 90°C, and the melt viscosity is low, which can significantly improve the processing fluidity of the filling system. www.handern.com non-woven equipment
②The amount of fillers and fillers accounts for the largest proportion of the filler masterbatch, and it has the most significant contribution to cost reduction. Therefore, cheap materials should be sought and the maximum dosage should be achieved as much as possible. Filler particle size has a great influence on the effect of the filling system. In general, the finer the filler, the better the dispersion and the better the fluidity during the molding process. However, if the filler is too fine, its total surface area will increase. When the total surface area of the filler exceeds the area that can be covered by the resin, the filler will easily agglomerate during processing, which will reduce the performance of the by-products. www.handern.com non-woven equipment
Filler can use light calcium carbonate, talc, etc. www.handern.com non-woven equipment
③ The strength of the coupling agent polymer material system mainly depends on the interface formed when the resin and the filler are combined. The coupling agent has a dual group of hydrophilic and water, the hydrophilic group chemically combines with the inorganic filler, the long-chain base of magic water and the polymer macromolecular chain: thus improving the dispersion and phase of the filler in the resin Capacitive, to enhance the strength of the interface between them. www.handern.com non-woven equipment
① The carrier resin random polydiene is mixed with powder filler equivalent to five times its weight. The strength is very poor. To make granules with a certain shape, a certain amount of carrier resin needs to be added. In the random polypropylene filled masterbatch, because the mixing temperature of the masterbatch is only about 100 ℃, the low-density polyethylene can be used for the surface tailoring resin, and it is also better than other resins in terms of price and raw material source. www.handern.com non-woven equipment
⑤ Adding a certain amount of lubricant to the lubricant is conducive to operating on the machine, and the acid-proof and fat-proof acid salts have an interface activation effect on the inorganic filler, which can improve their dispersion effect. However, it should be noted that the added lubricant does not reduce the effectiveness of the coupling agent. www.handern.com non-woven equipment
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