High and low temperature resistance and coloring properties of hollow board plastic products

日期:2019/4/3 10:23:48 / 阅读: / 来源:本站

High and low temperature resistance and coloring properties of hollow board plastic products
The high temperature resistance of hollow plastic products, compared with steel, the heat resistance of plastic products produced by empty board equipment is not ideal. However, as long as people choose their proper use according to the thermal properties of different plastics, the shortcomings of poor heat resistance of plastics can be avoided. For example, polystyrene plastic can be used to make daily necessities such as tea cups and lunch boxes. If plastic is required to be resistant to boiling water, it is necessary to use a plastic with high heat resistance such as polypropylene PP. Under the condition that the heat resistance of polypropylene is not satisfactory, a plastic with higher heat resistance should be selected. The heat resistance of plastics is examined by the following three indicators: heat distortion temperature, thermal decomposition temperature and heat-resistant oxygen aging properties. Therefore, according to the heat resistance of plastics, rational and careful selection of plastic materials can be used to avoid weaknesses and play their roles.
Since the macromolecular structure and the molecular chain flexibility of the main component polymers in various plastics are different, and the crystallinity thereof is also different, the low temperature resistance of various plastics is also greatly different. For example, unmodified polypropylene has the characteristics of low temperature brittleness, while plastics such as polycarbonate, polyphenylene ether and polytetrafluoroethylene have low embrittlement temperature and low temperature resistance, and are often used as engineering plastics that require cold resistance.
Hollow plate plastic products are transparent and easy to color. The products produced by the hollow board equipment are translucent to transparent, but often the plastics are opaque, which is related to the additives in the plastics, such as the transparency of the plastic products and the variety, formulation, crystallinity, crystallization rate, crystal of the plastic products. The particle size and material thickness are directly related to the transmittance and refractive index of the plastic. In addition, there are also conditions for storage and use that affect the aging of plastics. For example, plexiglass and polycarbonate in polyacrylic acid vinegar have high transparency; according to the formulation of transparent polyvinyl chloride, transparent polyvinyl chloride bottles and plates can be made into transparent products. Many plastics have good transparency due to the formation of very thin films, such as polyester, polyolefin and other films.
The hollow board product plastic has the characteristics of being easy to color. After the coloring of the plastic, the appearance and performance of the plastic product are affected due to the composition and properties of the dye (or pigment). Even in the case of improper selection of colorants, the aging of plastic materials is promoted. Therefore, the selection of the colorant should be reasonably selected according to the variety of the plastic, the processing conditions, and the environment in which the product is used.Compared with steel, the high temperature resistance of hollow plastic products and the heat resistance of plastic products are produced by empty board equipment that is not ideal. However, according to the thermal properties of different plastics, people choose their proper use to avoid the shortcomings of poor heat resistance of plastics. For example, polystyrene plastic can be used to make daily necessities such as tea cups and lunch boxes. If plastic is required to be resistant to boiling water, it is necessary to use a plastic with high and heat resistance such as polypropylene. Under the condition, the heat resistance of polypropylene is not satisfactory. The plastic with higher heat resistance should be selected. The heat resistance of plastics is examined by the following three indicators: heat distortion temperature, thermal decomposition temperature and heat-resistant oxygen aging properties. Therefore, according to the heat resistance of plastics, rational and careful selection of plastic materials can be used to avoid weaknesses and play their roles.Since the macromolecular structure, the crystallinity thereof and the molecular chain flexibility of the main component polymers in various plastics are different, the low temperature resistance of various plastics is also greatly different. For example, unmodified polypropylene has the characteristics of low temperature brittleness, while plastics such as polycarbonate, polyphenylene ether and polytetrafluoroethylene have low embrittlement temperature and low temperature resistance,  are often used as engineering plastics that require cold resistance.Hollow plate plastic products are transparent and easy to color. The products produced by the hollow board equipment are translucent to transparent, but, sometimes, the plastics are opaque, which is related to the additives in the plastics, such as the transparency of the plastic products and the variety, formulation, crystallinity, crystallization rate, crystal of the plastic products. The particle size and material thickness are directly related to the transmittance and refractive index of the plastic. In addition, there are also conditions for storage and use that affect the aging of plastics. For example, plexiglass and polycarbonate in polyacrylic acid vinegar have high transparency; according to the formulation of transparent polyvinyl chloride, transparent polyvinyl chloride bottles and plates can be made into transparent products. Many plastics have good transparency due to the formation of very thin films, such as polyester, polyolefin and other films.The hollow board product plastic has the characteristics of being easy to color. After the coloring of the plastic, the appearance and performance of the plastic product are affected due to the composition and properties of the dye (or pigment). Even in the case of improper selection of colorants, the aging of plastic materials is promoted. Therefore, the selection of the colorant should be reasonably selected according to the variety of the plastic, the processing conditions, and the environment in which the product is used.

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