High and low moisture permeable coating is a kind of surface treatment technology widely used at present, which has good moisture permeability and moisture resistance.
1. Definition and characteristics of high and low moisture permeable coating
The high and low moisture permeable coating is a special coating, which has different moisture permeability and ADAPTS to different application environments. The coating is generally sprayed on the surface of the substrate to form a film with continuity, smoothness and hardness.
The high and low moisture permeable coating has the following characteristics:
(1) Strong moisture permeability: the high and low moisture permeability coating has good moisture permeability, and the gas and water vapor can be freely transmitted inside. It can effectively prevent the entry and exit of gas and moisture and keep the storage items dry.
(2) Good moisture resistance: high and low moisture permeable coating can prevent moisture from entering and leaving, and maintain the freshness and quality of stored items.
(3) Good environmental performance: high and low moisture permeable coating using environmental protection materials, non-toxic, tasteless, pollution-free, no emissions, in line with environmental requirements.
(4) Excellent durability: the high and low moisture permeable coating has anti-aging, good weather resistance, and is not easy to fall off.
(5) Suitable for different application environments: high and low moisture permeable coatings are suitable for different fields of application, such as food storage, medical materials, building materials, etc.
2, high and low moisture permeable coating processing technology
The technology of high and low moisture permeable coating processing is a complex coating process, involving a number of links and technical steps, the specific operations are as follows:
(1) Substrate surface treatment: the substrate is thoroughly cleaned and polished to make the paint better combined with the substrate.
(2) Coating preparation: preparation of coatings with high and low moisture permeability, usually including epoxy resin, acrylic resin, polyurethane and other materials.
(3) Spraying process: spraying through the coating equipment to ensure that the coating coverage area is uniform, smooth, and does not produce bubbles and flow.
(4) Drying treatment: dry the coating to a certain hardness and adhesion, so as to avoid cracking and falling off in the subsequent manufacturing process.
(5) Testing and packaging: comprehensive inspection of finished products, timely treatment of unqualified products, packaging and storage of qualified products.
3, high and low wet coating processing application
High and low moisture permeable coating processing is widely used in various fields, such as food storage, medical materials, building materials and so on.
(1) Food storage: The high and low moisture permeable coating material can effectively maintain the freshness and quality of food and prevent expiration and deterioration.
(2) Medical materials: high and low moisture permeable coating materials can directly contact the human body, to ensure that the material is harmless to the human body, improve the durability and service life of the material.
(3) Building materials: high and low moisture permeable coating materials can play a role in moisture-proof, mildew proof, corrosion prevention, heat preservation on building materials, and improve the service life of building materials.
(4) the development trend of high and low permeability coating processing
High and low moisture permeable coating has been widely used, and the technology is becoming more and more mature. In the future, the development trend of high and low moisture permeable coatings is as follows:
(1) Green and environmental protection: Because the high and low moisture permeable coating is directly in contact with the human body or stored items, green and environmental protection will become the main direction of future development.
(2) Intelligent: high and low moisture permeable coating will become an important part of the field of intelligent building materials, through the application of smart materials, sensors, networks and other technologies to achieve efficient operation.
(3) Diversification: The future high and low moisture permeable coatings will be more diversified to meet the needs of different fields. For example, high and low moisture permeable coatings for different environmental applications, high and low moisture permeable coatings of various colors and glossiness, etc.
In general, the high and low moisture permeable coating processing technology to protect human health and the environment, improve production efficiency and quality, has an important role and significance, will be applied and developed in a broader field.
