What is the raw material composition and testing of polyurethane board?

1. Main raw materials for polyurethane board

Polyether polyols, polyether polyol industrial products; Isocyanates (industrial products), curing agents, flame retardants, anti-static agents, pigments, reinforcing materials.

2. Equipment for polyurethane board: raw material reaction section, pouring equipment, vacuum equipment, vulcanization equipment, heating equipment, molds, etc.

3. Testing methods

Rubber hardness tester

Surface Insulation Resistance Tester

Alcohol spray combustion test chamber

Rolling wear machine

Computer tension testing machine

Polyurethane prepolymerization

1. All - OH are blocked with diisocyanates to form large diisocyanates with polyether, polyester, or polyurethane in between.

2. Solidification reaction.

3. Polyurethane prepolymers should be stored in a cool and ventilated place, not exposed to direct sunlight, and should not be stored in iron or plastic drums. They need to be sealed to prevent air leakage, and the sealing cover should not be opened casually. When opening the sealing cover, it should be closed at all times. Frequently opening the lid, the sealed pre polymer needs to form a layer of skin on the surface, which means that after opening the lid, water in the air enters the surface of the pre polymer, reacts with isocyanates, and generates carbon dioxide and urea. At present, the production technology of polyether polyols and polyisocyanates in China is mostly imported from developed countries such as Japan, the United States, Germany, and the United Kingdom, and the quality is guaranteed compared to the polyols and polyisocyanates we developed ourselves before. The storage period of the pre polymer produced is similar to that of the pre polymer produced abroad, with a total storage period of 1 year.

During the storage process of polyurethane prepolymers, the - NCO groups containing the prepolymers react with the active hydrogen groups such as urease and carbamate in the prepolymers. Therefore, the - NCO% content should be analyzed at any time during application.

4. The influence of physical structure.

5. Dielectric properties

Polyurethane products have excellent electrical properties, but wear-resistant pads require the product itself to have very good anti-static performance and be semi conductive. This is the only way to release the large number of power outages that occur during the loading and unloading process. Otherwise, if there is excessive power outage and a large amount of dust comes into contact with the raw materials, the dust will explode, causing production accidents and causing huge losses to port enterprises.

What are the applications of polyurethane board?

1. Polyurethane is one of the high-performance new materials between rubber and plastic, with excellent performance and multiple uses in various industries. Its usage is increasing in economically developed regions and countries.

The main uses of polyurethane are:

Polyurethane flooring

Polyurethane spray

Polyurethane foam

Polyurethane elastomer

Polyurethane insulation and anti-corrosion

Polyurethane waterproof, sealing materials and sealants

Polyurethane adhesive

Polyurethane paint

Pipeline lining

Polyurethane fabric (fiber)

Polyurethane leather

Polyurethane sole

2. Use of polyurethane: With the continuous development and improvement of polyurethane, its application has penetrated into various aspects of our lives. For example, industries such as automobile production, mining and mineral processing, port terminals, food and food processing, medical and health care, construction machinery, electronic equipment, construction, furniture, textiles, clothing and shoes, synthetic leather, water conservancy maintenance, petrochemicals, printing and packaging, sports and fitness have a large number of applications. With the development of technology,