Wuhan Handern Polyester Foam
DATE：2020/5/12 8:25:37 / READ： / SOURCE：This station
Wuhan Handern Polyester Foam
1. Development of Wuhan Handern Polyurethane Foam
Polyurethane foam was first developed successfully in Germany in 1947. The first industrial production was rigid polyurethane foam, which was used as a lightweight high-strength interlayer aerospace structural material, radar structure sandwich material, and core material. Successfully studied flexible polyurethane foam in 1952. The flexible polyurethane foam invented in Germany at that time used 65/35 toluene diisochlorate, adipic acid-based polyester polyol, tertiary amine catalyst, ionic emulsifier and Water is a blowing agent. This soft foam has good mechanical strength, oil and solvent resistance. With excellent flexibility and resilience, it is an excellent cushioning material and finishing material. Since the successful development of soft polyether polyurethane foam in the United States in 1952, polyurethane foam has made a leap in commercial development because of its low price , With better flexibility, water resistance and high elasticity. www.handern.com Plastic building template, melt-blown non-woven equipment
In the 1970s, the United States successfully developed the use of hemp oil to produce semi-rigid polyurethane foam, which is characterized by excellent impact resistance, particularly excellent cushioning performance, and is widely used in the automobile transportation industry. www.handern.com Plastic building template, melt-blown non-woven equipment
Polyurethane foam was first developed successfully in Germany in 1947. The first industrial production was rigid polyurethane foam, which was used as a lightweight high-strength interlayer aerospace structural material, radar structure sandwich material, and core material. Successfully studied flexible polyurethane foam in 1952. The flexible polyurethane foam invented in Germany at that time used 65/35 toluene diisochlorate, adipic acid-based polyester polyol, tertiary amine catalyst, ionic emulsifier and Water is a blowing agent. This soft foam has good mechanical strength, oil resistance, solvent resistance, excellent flexibility and resilience. It is an excellent cushioning material and finishing material. Since the United States developed a soft polyether polyurethane foam in 1952 , Polyurethane foam has a leap forward in business, because the price is low, with better flexibility, water resistance and high elasticity. www.handern.com Plastic building template, melt-blown non-woven equipment
The polyurethane industry in China started in 1958. In the 1960s, polyurethane was used to produce foamed polyurethane synthetic leather. After Yantai Polyurethane Factory imported equipment and software from Japan and put into mass production, China's polyurethane industry has taken a big step forward and provided raw materials for the protective layer of the petroleum industry pipeline. The petroleum pipeline needs this kind of coating with excellent thermal insulation and rust resistance Material, and the foam polyurethane produced by this rigid casting method not only has good adhesion to the appearance of steel pipes, but also can be cast on site in sections, which is convenient and simple to construct. Cast foam polyurethane is also used in the packaging of machinery with irregular and complex shapes, for example: equipment produced by the oil nozzle oil pump factory, in order to prevent the tubing from being damaged during transportation, a thin bandage is used, and then the foam polyurethane is cast in the outer calcium-plastic corrugated box Fixed, with good shock resistance. www.handern.com Plastic building template, melt-blown non-woven equipment
At present, the total output of polyurethane foams accounts for about 80% of the total output of polyurethane resins, of which soft foams and semi-rigid materials account for 80% and hard materials account for 20%. www.handern.com Plastic building template, melt-blown non-woven equipment
Polyurethane foam is characterized by strong adaptability, and foam plastic products with different softness and hardness and different properties can be prepared by changing the composition and formula of raw materials, such as: temperature resistant foam, flame retardant foam, low temperature resistant foam , High temperature ablative foam, super soft foam, etc. Low temperature resistant foam can withstand storage and transportation of liquid hydrogen at 217 ℃; high temperature resistant ablative foam can withstand long-term operation at 250 ℃, short-term can withstand flames above 1000C0 for 1h. .handern.com plastic building template, melt-blown non-woven equipment
Polyurethane foam plastic foam molding process, there are block foam, casting foam, flat-top block foam technology, cold, mature foam technology, secondary foam technology, reaction injection model (RM) foam Process, skin hardening molding foaming process, airless spray foaming process, single component foaming process. www.handern.com Plastic building template, melt-blown non-woven equipment
Author：admin