Environmental thermoplastic PVC table tennis material and its preparation method of table tennis

Abstract

An environmental thermoplastic PVC table tennis material comprises the following materials, by weight, 100 parts of polyvinyl chloride, 3-8 parts of a heat stabilizer, 1-5 parts of a lubricant, 10-30 parts of a reinforcing flexibilizer, 5-10 parts of a filling material, 0.1-0.2 part of a toner, 0.1-0.5 part of an anti-oxidant and 0.1-2 parts of an ultraviolet ray absorber. The preparation method of the environmental thermoplastic PVC table tennis comprises the following steps: firstly carrying out injection moulding to form two hemispheres, splicing the two hemispheres by the use of an adhesive to form a complete sphere, polishing, swelling in a die cavity to form a uniform table tennis, and carrying out aftertreatment to prepare a finished product ball. Thickness of the hemispheres, from top to bottom, is divided into five stages. The environmental thermoplastic PVC table tennis material has advantages of low cost, high hardness, excellent elastic modulus, good eccentricity and good environmental protection property, and can meet requirements of a game ball.

Description

technical field [0001] The invention relates to a method for preparing table tennis balls from environmentally friendly thermoplastic PVC table tennis materials. Background technique [0002] Since the 1930s, celluloid has been used as a raw material to prepare table tennis balls. Due to its high hardness and elastic modulus, the table tennis balls produced have the advantages of uniform thickness and long service life, and this material has been used until now. . But adopting celluloid to be raw material to make table tennis has following drawbacks: [0003] One is that the celluloid material is mainly made of dehydrated nitrocellulose, which is flammable and explosive, and there are great safety hazards in the raw material stage, storage and transportation process of the production stage, and after it is made into table tennis products, its There are also hidden dangers of flammability during storage and transportation. [0004] Second, for the sake of safety, nitrocel...

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Problems solved by technology

[0003] One is that the celluloid material is mainly made of dehydrated nitrocellulose, which is flammable and explosive, and there are great safety hazards in the raw material stage, storage and transportation process of the production stage, and after it is made into table tennis products, its In the process of storage and transportation, there are also hidden dangers of flammability

[0004] Second, for the sake of safety, nitrocellulose needs to be added with water during transportation, and needs to be dehydrated during use. There is a large amount of waste liquid discharge, which will bring harm to the environment and is not environmentally friendly; in addition, its production process is complicated and the production cycle is long.

However, the table tennis ball made of cellulose acetate as the main raw material has high cost and poor weather resistance. In winter, the ball is brittle and easily broken, so it is not suitable for winter games.

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