One sixth. Development of Polyurethane Foam
DATE：2019/12/30 9:26:08 / READ： / SOURCE：This station
One sixth. Development of Polyurethane Foam
Polyurethane foam was first successfully developed in Germany in 1947. The first production into the industry was rigid polyurethane foam, which was used as a lightweight high-strength sandwich structural material, a sandwich material, and a core material for radar structures. Research on flexible polyurethane foam in 1952. At the time, this flexible polyurethane foam invented in Germany used 65/35 toluene diisooxy ester, hexanoic polyester polyol, tertiary amine catalyst, ionic emulsifier and water. It is a foaming agent. This soft foam has good mechanical strength, oil resistance, solvent resistance, excellent softness and resilience, and is an excellent cushioning and cushioning material. Since the successful development of flexible polyether polyurethane foam in the United States in 1952, polyurethane foam has made a rapid commercial development because of its low price, better flexibility, water resistance, and high elasticity.
In the 1970s, the United States successfully developed the use of castor oil to produce semi-rigid polyurethane foam, which is characterized by excellent impact resistance and excellent cushioning properties, and has been widely used in the automotive transportation industry.
China's polyurethane industry started in 1958. In the 1960s, polyurethane was used to produce foamed polyurethane synthetic leather. After Yantai Polyurethane Factory introduced equipment and software from Japan and put it into large-scale production, China's polyurethane industry has taken a big step forward and provided raw materials for the pipeline protection layer of the petroleum industry. Petroleum pipelines need such a package with excellent thermal insulation and rust resistance. Covering materials, and the foam polyurethane produced by this hard casting method not only has good adhesion to the appearance of steel pipes, but also can be cast in situ on site, which is convenient and simple to construct. Cast foam polyurethane is also used for packaging of machinery with irregular and complex shapes, such as the equipment produced by the oil nozzle and oil pump factory. In order to prevent the tubing from being damaged during transportation, it is wrapped with a film, and then the foam polyurethane is cast in an outer packaging calcium plastic corrugated box Fixed with good shock resistance.
At present, the total output of polyurethane foam plastic accounts for about 80% of the total output of polyurethane resin, of which soft foam and semi-rigid account for 80%, and rigid account for 20%.
Polyurethane foam is characterized by strong adaptability. Foam plastic products with different soft hardness and different properties can be made by changing the composition and formula of raw materials, such as: temperature resistant foam, flame retardant foam, low temperature foam resistance, High temperature ablated foam, super flexible foam, etc. Low temperature resistant foam can be used for storage and transportation of liquid hydrogen at 217 ℃; high temperature ablation resistant foam
It can work for a long time at a temperature of 250C and a flame with a temperature of more than 1000 for 1h in a short time, which is ideal in the word navigation industry.
material
A polyurethane foam plastic foam molding process, including block foaming, cast foaming, flat-top block foaming process, cold and curing foaming process, secondary foaming process, reaction injection molding (RM) foaming Technology, skin crust molding foaming process, airless spray foaming process, one-component foaming process.
Raw and auxiliary materials of polyurethane foam
Polyurethane foam was first successfully developed in Germany in 1947. The first production into the industry was rigid polyurethane foam, which was used as a lightweight high-strength sandwich structural material, a sandwich material, and a core material for radar structures. Research on flexible polyurethane foam in 1952. At the time, this flexible polyurethane foam invented in Germany used 65/35 toluene diisooxy ester, hexanoic polyester polyol, tertiary amine catalyst, ionic emulsifier and water. It is a foaming agent. This soft foam has good mechanical strength, oil resistance, solvent resistance, excellent softness and resilience, and is an excellent cushioning and cushioning material. Since the successful development of flexible polyether polyurethane foam in the United States in 1952, polyurethane foam has made a rapid commercial development because of its low price, better flexibility, water resistance, and high elasticity.
In the 1970s, the United States successfully developed the use of castor oil to produce semi-rigid polyurethane foam, which is characterized by excellent impact resistance and excellent cushioning properties, and has been widely used in the automotive transportation industry.
China's polyurethane industry started in 1958. In the 1960s, polyurethane was used to produce foamed polyurethane synthetic leather. After Yantai Polyurethane Factory introduced equipment and software from Japan and put it into large-scale production, China's polyurethane industry has taken a big step forward and provided raw materials for the pipeline protection layer of the petroleum industry. Petroleum pipelines need such a package with excellent thermal insulation and rust resistance. Covering materials, and the foam polyurethane produced by this hard casting method not only has good adhesion to the appearance of steel pipes, but also can be cast in situ on site, which is convenient and simple to construct. Cast foam polyurethane is also used for packaging of machinery with irregular and complex shapes, such as the equipment produced by the oil nozzle and oil pump factory. In order to prevent the tubing from being damaged during transportation, it is wrapped with a film, and then the foam polyurethane is cast in an outer packaging calcium plastic corrugated box Fixed with good shock resistance.
At present, the total output of polyurethane foam plastic accounts for about 80% of the total output of polyurethane resin, of which soft foam and semi-rigid account for 80%, and rigid account for 20%.
Polyurethane foam is characterized by strong adaptability. Foam plastic products with different soft hardness and different properties can be made by changing the composition and formula of raw materials, such as: temperature resistant foam, flame retardant foam, low temperature foam resistance, High temperature ablated foam, super flexible foam, etc. Low temperature resistant foam can be used for storage and transportation of liquid hydrogen at 217 ℃; high temperature ablation resistant foam
It can work for a long time at a temperature of 250C and a flame with a temperature of more than 1000 for 1h in a short time, which is ideal in the word navigation industry.
material
A polyurethane foam plastic foam molding process, including block foaming, cast foaming, flat-top block foaming process, cold and curing foaming process, secondary foaming process, reaction injection molding (RM) foaming Technology, skin crust molding foaming process, airless spray foaming process, one-component foaming process.
Raw and auxiliary materials of polyurethane foam
Author：admin