Views: 10 Author: Site Editor Publish Time: 2021-06-29 Origin: Site
1. What is polyurethane spraying?
Polyurethane spraying technology is based on isocyanate and polyether as the main raw materials. Under the action of various additives such as blowing agent, catalyst, flame retardant, etc., through the use of special network equipment and mixing, the high-pressure spraying construction site is foamed. Into a high molecular weight polymer. Rigid polyurethane foam is a new type of biosynthetic research material developed with good thermal insulation and waterproof system functions. Its thermal conductivity coefficient is low, only 0.022~0.024W/(m².k). It is equivalent to half of the extruded board, which is the lowest thermal conductivity coefficient of all building insulation engineering materials in my country. Polyurethane spray flame retardant grades B1 and B2 can be used.
Rigid polyurethane foam is generally foamed at room temperature, and its molding process is relatively simple. In our refrigeration industry, rigid polyurethane foam is generally used for spraying.
Black material and white material: The scientific name of black material is polyisocyanate. Because it is a black viscous liquid, it is commonly called black material. Among them, MD is a kind of polyisocyanate, which is used in the production of refrigerator polyurethane foam.
The white substance is a white viscous liquid. In the industrial production of refrigerator polyurethane foam, it is usually mixed with polyether polyol and catalyst foam stabilizer.
The application of polyurethane spraying and the characteristics of product development
Polyurethane spraying is widely used in various industries, mainly in our refrigeration and HVAC industries:
Spray insulation for external cold storage;
Cold storage board insulation;
Solar insulation; refrigerator and freezer insulation; refrigerator container insulation;
Cold storage insulation we usually use polyurethane sandwich double-sided color steel cold storage insulation board, or directly spray the polyurethane facade on the wall for insulation. In southeastern my country, polyurethane sandwich double-sided color steel insulation panels account for the vast majority, while in the northwest, polyurethane vertical spraying accounts for the vast majority.
Rigid polyurethane foam is widely used in Europe and the United States for building roofs, walls, ceilings, floors, doors and windows, and other thermal insulation materials because of its light weight, low thermal conductivity, good heat resistance, aging resistance, easy to bond with other substra
On July 15, CNMC-E3 polyurethane spraying machine produced by Winter Machinery was loaded in Winter Industrial Park and will be exported to Russia soon.CNMC-E3 polyurethane spraying machine is widely used in industrial maintenance, tunnels, subways, waterproofing of road base, foam film and televisi
Foam Expo will be held in Detroit, Michigan, USA on June 20-21, 2023. Foam Expo serves all types of foams and raw materials used in the manufacture of foam and foam-related products, including the consumer and industrial foam markets. The show will showcase solutions for molded, rigid and flexible f
CNMC-E3 polyurethane foam spraying machine shipped to USA.Voltage: 110V, equipped with 1 gun, 1 lifting pump, 1 Graco pipe, 1 round nozzle of gun, 2 meters of air hose, 1 tool box.
All family members:According to the provisions of the national statutory holidays, and taking into account the actual situation of the company, the following arrangements are made for the May Day holiday in 2023: I. Saturday, April 29 (Saturday) - Wednesday, May 3 (Wednesday) holiday transfer, a tot
Can you believe it? After spraying polyurea in the bamboo basket, the bamboo basket can be used to fetch water to make it drip-proof; after spraying polyurea on the outside of the watermelon, no damage can be seen even if it is dropped from the 15th floor.That's right, polyurea, the "king of coating
On October 22, the CNMC-E3 polyurethane spraying machine produced by Hightop was loaded in the Hightop Industrial Park and will be exported to Germany soon. CNMC-E3 polyurethane spraying machine is widely used in industrial maintenance, tunnel, subway, roadbed waterproofing, foam film and television
On October 22, the CNMC-E3 polyurethane spraying machine produced by Hightop was loaded in the Hightop Industrial Park and will be exported to Germany soon. CNMC-E3 polyurethane spraying machine is widely used in industrial maintenance, tunnel, subway, roadbed waterproofing, foam film and television
On October 16, Liu Xiaolin, Secretary of the Party Working Committee and Director of the Management Committee of Jining Economic Development Zone, Xu Gang, member of the Party Working Committee and Deputy Director of the Management Committee, and other leaders visited Gentop workshop to inspect and
All employees:According to the provisions of the national statutory holidays and the actual situation of the company, the following arrangements are made for the National Day holiday: 1. From October 1st (Saturday) to October 7th (next Friday), there will be a total of 7 days off;All day on October
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