Plastic materials have become increasingly widely used due to their advantages such as light weight, cheap price, convenient manufacturing, and excellent performance. The proportion of engineering plastics replacing other materials can also be used as a measure of a country's level of technological development. Below, plastic shell manufacturers will discuss the coatings and coatings used for plastic shells of household appliances.
Plastic surface coatings and coating technology have rapidly developed into an emerging industry. From ordinary decorative properties to special functional properties, and from solvent based to water-based.
Plastic shell manufacturers believe that in the field of household appliances, plastic materials can be used as shells for almost all household appliances such as mobile phones, computers, televisions, washing machines, audio equipment, cameras, air conditioners, etc.
When molding plastic products, there may be defects such as uneven color, monotonous color, stains and defects, and problems such as aging, brittleness, scratches, stains, and static electricity are prone to occur. Paint can avoid these shortcomings and problems.
The task of applying plastic paint to plastic shell manufacturers has the following effects.
Cover up defects in processing and forming. Improve the decorative appearance and excellent texture, such as gloss, printed matter, patterns, metal or wood texture.
Add basic protective functions such as wear resistance, scratch resistance, weather resistance, light resistance, flame retardancy, content control, and drug resistance to improve the service life of plastic products.
Electrical insulation, conductivity, electromagnetic shielding, anti-static, anti-corrosion, mold proof, sterilization, insect killing, high temperature, insulation, temperature display, insulation elimination, infrared reflection, solar absorption, luminescence, high light display, anti slip, lubrication.
Plastic shell manufacturers trust the surface characteristics and adhesion mechanism of plastic
Plastic is a special device that belongs to surfaces with low polarity and surface free energy, making it difficult to adhere.
Diffusion theory, solubility parameter theory; Electrostatic theory; Chemical bond theory; Adsorption and mechanical bite theory, etc.
Plastic shell manufacturers talk about the influencing factors of plastic coating adhesion:
The influence of basic materials in paint
The Effect of Solvents on Coatings
The influence of various additives
The Effect of Internal Stress on Plastic Substrates
Plastic shell coatings and coatings for household appliances
The commonly used materials for plastic shells of household appliances are ABS and HIPS. PVC, PP, HIPP, PE, PC, PMMA, AS, etc. are also used as electrical enclosures for writers. PVC, PC, PMMA, and AS mainly use transparent materials made by writers.
There are mainly thermoplastic acrylic resin paint, thermosetting acrylic polyurethane resin paint, chlorinated polyolefin modified paint, modified polyurethane resin paint, fluorocarbon resin paint, chloroacetic resin paint, nitro resin paint, modified epoxy resin paint, alkyd resin paint, etc.
Acrylic coatings are commonly used, while fluorocarbon resin coatings have developed rapidly in recent years.
The selection of paint shared by plastic shell manufacturers should follow the following principles:
According to the characteristics of the base material plastics, select the appropriate film forming resin system and solvent system.
Coatings need to meet performance requirements under specific usage conditions such as physical, chemical, and photoelectric properties. Select coatings based on coating method and coating process.
Excellent cost-effectiveness: In compliance with environmental protection requirements.