Polyurethane hard plastic foam composition
A foaming composition and polyurethane technology, applied in the field of polyurethane rigid foam plastic foaming compositions, can solve problems such as poor mechanical properties, and achieve the effects of overcoming poor mechanical properties, good strength and toughness, and avoiding environmental hazards
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Embodiment 1
[0031] Take by weight 5 parts of glycerol polyether resin, 5 parts of glycol ether resin, 0.2 part of foam stabilizer water-soluble silicone oil, 0.2 part of catalyst pentamethyldiethylene, 0.3 part of curing agent dibutyltin dilaurate, 2 parts Parts of water, mixed to form raw material combination polyether, then add 5 kg of dimethyl ether, 2 parts of glass fiber, 8 kg of mullite and 5 kg of silicon carbide fine powder according to 80 kg of combined polyether, and mix uniformly to form a polyether composition. Then mix it with isocyanate in a container at a mass ratio of 1:1.4 to obtain rigid polyurethane foam.
Embodiment 2
[0033] Weigh 6 parts of glycerol polyether resin, 4 parts of glycol ether resin, 0.3 part of foam stabilizer water-soluble silicone oil, 0.3 part of catalyst pentamethyldiethylene, 0.2 part of curing agent dibutyltin dilaurate, 3 parts by mass parts Parts of water, mixed to form raw material combination polyether, then add 3 kilograms of dimethyl ether, 2 parts of glass fiber, 6 kilograms of mullite and 4 kilograms of silicon carbide fine powder according to 85 kilograms of combined polyether, mix uniformly to form polyether composition, Then mix it with isocyanate in a container at a mass ratio of 1:1.3 to obtain rigid polyurethane foam.
Embodiment 3
[0035] Take by weight 7 parts of glycerol polyether resin, 3 parts of glycol ether resin, 0.2 part of foam stabilizer water-soluble silicone oil, 0.4 part of catalyst pentamethyldiethylene, 0.2 part of curing agent dibutyltin dilaurate, 3 parts Parts of water, mixed to form a raw material combination polyether, then add 2 kg of dimethyl ether, 2 parts of glass fiber, 4 kg of mullite and 2 kg of silicon carbide fine powder according to 90 kg of combined polyether, mix evenly to form a polyether composition, Then mix it with isocyanate in a container at a mass ratio of 1:0.9 to obtain rigid polyurethane foam.
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