High-fluidity injection molding spliced floor PVC modified material and preparation method thereof

Abstract

The invention discloses a high-fluidity injection molding spliced floor PVC modified material and a preparation method thereof, and the formula comprises: PVC resin powder, a plasticizer, filler, a heat stabilizer, a lubricant, a processing aid and a flame retardant. Specifically, the components are as follows by weight: 62.46-66.1 parts of PVC resin powder, 22.06-25.06 parts of the plasticizer, 6.57-8.11 parts of the filler, 3-3.16 parts of the heat stabilizer, 0-0.85 part of the lubricant, 0-0.66 part of the processing aid and 0.62-0.66 part of the flame retardant; the preparation method of the high-fluidity injection molding spliced floor PVC modified material comprises the following steps of: 1, raw material weighing; 2, stirring and heating; and 3, extrusion and granulation. According to the preparation method, the formula of a PVC material in a traditional preparation formula is changed, the processing properties such as blow molding and injection molding of the hard PVC material are effectively improved through the formula, the surface gloss and injection molding spiral lines of a product are improved, meanwhile, the temperature in the processing process is reduced, and the flowability and cold resistance of the PVC modified material are improved.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a high-fluidity PVC modified material for injection molding splicing floors and a preparation method thereof. Background technique [0002] Polyvinyl chloride plastic is polymerized from vinyl chloride monomer and is one of the most commonly used thermoplastics. Pure polyvinyl chloride resin is a hard thermoplastic substance, its decomposition temperature is very close to the plasticizing temperature, and its mechanical strength is poor. Therefore, polyvinyl chloride resin cannot be used to mold products, and plasticizers, stabilizers, fillers, etc. must be added to improve performance to make polyvinyl chloride plastics, and then processed into various products. According to the amount of plasticizer added, it is divided into rigid polyvinyl chloride and soft polyvinyl chloride. Polyvinyl chloride is one of the earliest industrialized and widely used general-purpo...

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Problems solved by technology

It has the advantages of light weight, high strength, insulation, flame retardancy, corrosion resistance, excellent comprehensive physical properties, low price and wide source of raw materials; rigid PVC has the following disadvantages due to the small amount of plasticizer added: 1. Poor fluidity, Especially when injection molding slightly larger products, it is difficult to maintain good dimensional stability in injection molding; 2. High processing temperature and long processing time; 3. Poor low temperature resistance, usually hardens at about -10 ° C, -20 It becomes embrittled below ℃

The industry often adds other modifiers to the PVC material formula to enhance its fluidity, cold resistance, reduce processing temperature and other ductility; currently most of the ordinary 85-97A hardness PVC plastics are used for wire plugs and small accessories injection molding It has excellent performance in all aspects, but when it is used for injection molding of large-scale plastic products, its disadvantages of poor fluidity, poor cold resistance, and high processing temperature limit many uses. Its preparation method is necessary

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