High-elastic polyvinyl chloride weather-resistant flame-retardant super-bright crystal membrane and preparation method thereof

Abstract

The invention relates to a high-elastic polyvinyl chloride weather-resistant flame-retardant super-bright crystal membrane and a preparation method thereof, and belongs to the technical field of polyvinyl chloride crystal membranes. The high-elastic polyvinyl chloride weather-resistant flame-retardant super-bright crystal membrane comprises the following components in parts by mass: 100 parts of polyvinyl chloride resin, 50-80 parts of a primary plasticizer, 5-10 parts of a secondary plasticizer, 2-5 parts of a heat stabilizer, 0.1-0.5 part of an antioxidant, 0.05-0.15 part of a hand clearing agent, 0.5-1 part of a processing aid, 3-10 parts of a flame retardant, 0.005-1 part of a colorant, and 10-30 parts of modified polyvinyl chloride resin or 2-8 parts of an elasticator. The preparation method comprises the following steps: (1) preparation of a kneading material: feeding materials in a metered mode, mixing, and carrying out cold stirring for cooling; (2) plasticizing: carrying out plasticizing by using a planetary extruder; (3) calendering: carrying out calendering for preparing a membrane; (4) purifying and setting: purifying a water tank, and cooling for setting; (5) wringing and drying: wringing by using a wringing roller, and enabling the obtained product to pass through a hot roller; and (6) cooling and coiling: cooling the roller, and pressurizing for coiling. The membrane disclosed by the invention is simple in process, high in controllability, good in product transparency, good in low-temperature flexibility and resilience, smooth in high-temperature handfeel, high in mechanical properties, flame-retardant, environment-friendly, and safe.

Description

technical field [0001] The invention belongs to the technical field of polyvinyl chloride crystal membranes, in particular to a high-elastic polyvinyl chloride weather-resistant and flame-retardant ultra-transparent crystal membrane and a preparation method thereof. Background technique [0002] At present, PVC calendered products are widely used in various fields such as industry, agriculture, packaging, home decoration, and commercial floor stickers. Due to its bright color, good hand feeling and high transparency, the high-elastic PVC weather-resistant and flame-retardant ultra-transparent crystal diaphragm can maintain good elasticity especially in complex and changeable climate environments. It is widely used in luggage, high-end sports shoes, highlighting product quality and brand label film and other fields. [0003] Since the polyvinyl chloride product itself is polar and has good compatibility with most additives, it can endow the product with more functions and is...

AI Technical Summary

Problems solved by technology

The elasticity of PVC products is generally achieved by adding a large amount of plasticizers. Due to the limited oil absorption of PVC resin, when the plasticizer content increases to a certain value, it is prone to precipitation and surface stickiness, which will affect the use and appearance of the product.

When using high-molecular-weight resins with high oil absorption rate, there are often technical problems such as poor permeability of the prepared products, which cannot achieve super-transparent effects; and the higher the molecular weight, the higher the processing temperature, and relatively difficult processing.

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