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Time: 2021-05-28 15:07:57
Author: Dongguan Tereal Plastics Factory
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One of the most important indicators of the quality of environmentally friendly black color masterbatches is whether they are compatible with plastic raw materials. If they can not be fully integrated in the mixing process, it will affect the performance and quality of the finished product. The incompatibility of environmental protection black masterbatches with PP raw materials is often caused by three reasons: chemical properties, physical properties and processing technology. Here we analyze these three incompatible reasons one by one.
Different chemical properties
Environmental protection black masterbatch is a chemical polymer material, PP that is polypropylene, PP material is more resistant to chemical properties, PP's chemical stability is very good, in addition to concentrated sulfuric acid, concentrated nitric acid erosion, a variety of other chemical reagents are relatively stable; but low molecular weight aliphatic hydrocarbons, aromatic hydrocarbons and chlorinated hydrocarbons, etc. can make the polypropylene soften and dissolve, and at the same time, it is chemically stable with the increase in the degree of crystallinity has also increased, so the PP is suitable for making a variety of chemical pipelines and pipes, and the physical properties. PP is suitable for making all kinds of chemical pipes and fittings with good anti-corrosion effect.
Environmental protection black masterbatch additives and PP chemical reaction, then it will affect the products become yellow or brittle; environmental protection black masterbatch filler may react with the antioxidant in the PP material, resulting in aging or deformation of the product; environmental protection black masterbatch in the additives may be with the PP material in the flow of the agent to the compatibility problem, resulting in bubbles or defects on the surface of the product.
Second, different physical properties
PP is a non-toxic, odorless, tasteless milky white highly crystalline polymer, is one of the lightest varieties of plastic. Strong hydrophobicity: water absorption in water 24h is only 0.01%. Good molding properties, but the shrinkage rate is large, thick-walled products are easy to concave. The surface gloss of the products is good and easy to color. When the environmental protection black masterbatch pigment and additives in the particle size and shape of the different will have an impact on the compatibility of PP, may lead to the surface of the products appear uneven or defects. Environmental protection black masterbatch pigments and fillers may affect the toughness and abrasion resistance of the products, resulting in products fragile or easy to wear.
Third, the two processing methods are different
Environmental protection black masterbatches and PP material processing technology is also different, which is one of the reasons why they are not compatible. The processing technology of environmentally friendly black masterbatches includes mixing, melting, granulating and other processes, while the processing technology of PP materials includes extrusion, injection molding, blow molding and other processes. If environmentally friendly black masterbatches and PP materials are not compatible in the processing, it may lead to bubbles, defects and other problems on the surface of the products.
The different melting points of Eco Black Masterbatches and PP materials may cause them not to mix sufficiently during the melting process. If the mixing of Eco Black Masterbatches and PP materials is not uniform, it may lead to color difference or defects on the surface of the products. The melt fluidity of Eco Black Masterbatches and PP materials is also different, which may lead to bubbles or defects on the surface of the products.
The molecular structure and molecular chain length of Eco Black Masterbatches and PP materials are also different, which may affect their compatibility during processing. If the compatibility between Eco Black Masterbatches and PP materials is not good, it may lead to defects or deformation on the surface of the products. The molecular orientation of Eco Black Masterbatches and PP materials are also different, which may affect the physical properties and mechanical properties of the products.