Making method of scratch-resistant thin film

Abstract

The invention discloses a making method of a scratch-resistant thin film. The making method comprises the following steps: weighing following raw materials in parts by weight: 85-115 parts of oily polyurethane, 40-90 parts of PC resin, 40-90 parts of PE resin, 5-35 parts of a curing agent, 1-18 parts of a scratch-resistant agent, 0.2-3 parts of a drier, 0.1-4 parts of vinyl bis stearyl amide, 0.1-4 parts of a smoothing agent and 65-96 parts of an organic solvent; drying PC resin for 4-8 hours at a temperature of 95-120 DEG C, then uniformly mixing with other raw materials, stirring, performing high-temperature treatment, extruding, pelletizing and drying to obtain a polyester chip; melting and extruding the polyester chip, casting the chip with a die head, winding the cast chip, performing biaxial tension, cooling and shaping, measuring the thickness and winding to obtain the thin film. The thin film prepared by the making method disclosed by the invention is good in film forming property, good in scratch resistance, better in texture and simple in preparation method, not only has the function of preventing light and moisture, but also has the function of preventing damage and is suitable for the packaging of insulation products in the field of electronics and machinery.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for manufacturing a scratch-resistant film. Background technique [0002] With the continuous improvement of people's living standards, people are paying more and more attention to the quality of life. While there are many requirements for product performance, the packaging and appearance of products are also getting higher and higher. When people choose products, product packaging The quality and appearance of the product have also become a very important consideration for people to choose products and judge product quality. [0003] Polycarbonate (referred to as PC) is as thin as 0.03 mm thick. It is an amorphous, odorless, non-toxic, highly transparent colorless or slightly yellow thermoplastic engineering plastic with excellent physical and mechanical properties, especially impact resistance. Excellent resistance, high tensile strength, bending strength, c...

AI Technical Summary

Problems solved by technology

[0003] Polycarbonate (referred to as PC) is as thin as 0.03 mm thick. It is an amorphous, odorless, non-toxic, highly transparent colorless or slightly yellow thermoplastic engineering plastic with excellent physical and mechanical properties, especially impact resistance. Excellent resistance, high tensile strength, bending strength, compressive strength; small creep, stable size; good heat resistance and low temperature resistance, stable mechanical properties in a wide temperature range, dimensional stability, Electrical properties and flame retardancy; due to the high rigidity of the molecular chain, the viscosity of the resin melt is large; the water absorption rate is small, the shrinkage rate is small, the dimensional accuracy is high, the dimensional stability is good, and the air permeability of the film is small; it is a self-extinguishing material; stable to light , but not resistant to ultraviolet light, good weather resistance; oil resistance, acid resistance, strong alkali resistance, oxidizing acid and amines, ketones, soluble in chlorinated hydrocarbons and aromatic solvents, but due to poor fatigue resistance, it is prone to stress Cracking, poor solvent resistance, poor abrasion resistance

Therefore, it is easily scratched and discarded

Polyvinyl chloride, referred to as PVC, is a thermoplastic resin polymerized by vinyl chloride under the action of an initiator. It has good mechanical properties and is widely used in the packaging of cooked food products, but the stability of PVC material is poor. Decomposition will occur under the action of heat and light, and the mechanical strength will also decrease