Lightweight foam for automotive interiors and preparation method of lightweight foam
A technology for automobile interior decoration and light weight, which is applied in the field of preparation of synthetic sponges, can solve problems such as lack of environmental protection, and achieve the effect of fast foaming speed and increased catalytic effect
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Embodiment 1
[0017] A lightweight foamed cotton for automotive interiors, made of material A and material B at a mass ratio of 100:34; material A is made of the following raw materials by weight fraction: polyether polyol 330N 51%, POP-2045 polyurethane resin 41%, front stage catalyst 0.3%, surface catalyst 0.9%, back stage catalyst 0.8%, foam stabilizer 1.2%, foam opener 1.3%, water 3.5%, the sum of the mass fractions of the above raw materials is 100% ; Material B is made of the following raw materials by weight fraction: toluene diisocyanate 80.0%, diphenylmethane diisocyanate 20.0%.
[0018] The preparation method is: use a sponge molding machine to obtain lightweight foamed foam. The specific processing conditions are: mold temperature 55°C, material A temperature 23°C, material B temperature 21°C, flow rate of the filling head 332 g / s, oil pressure 175 Bar, A pump circulation pressure 150Bar, B pump circulation pressure 130 Bar, air pressure 6 kg / cm 2 , Vacuum breaking pressure - 2 ...
Embodiment 2
[0020] A lightweight foamed cotton for automotive interiors, made of material A and material B at a mass ratio of 100:40; material A is made of the following raw materials by weight fraction: polyether polyol 330N 52.3%, POP-2045 polyurethane resin 40%, front-stage catalyst 0.4%, surface catalyst 1.0%, back-stage catalyst 0.6%, foam stabilizer 1.0%, foam opener 1.2%, water 3.5%, the sum of the mass fractions of the above raw materials is 100% ; Material B is made of the following raw materials by weight fraction: toluene diisocyanate 80.0%, diphenylmethane diisocyanate 20.0%.
[0021] The preparation method is: use a sponge molding machine to obtain lightweight foam foam. The specific processing conditions are: mold temperature 60°C, material A temperature 20°C, material B temperature 18°C, flow rate of the filling head 332 g / s, hydraulic pressure 200Bar , A pump cycle pressure 180Bar, B pump cycle pressure 160Bar, air pressure 8kg / cm 2 , Vacuum foam breaking pressure -1Bar, ...
Embodiment 3
[0023] A lightweight foamed cotton for automotive interiors, made of material A and material B at a mass ratio of 100:34-46; material A is made of the following raw materials by weight fraction: polyether polyol 330N 53 %, POP-2045 polyurethane resin 39%, front stage catalyst 0.4%, surface catalyst 0.9%, back stage catalyst 0.8%, foam stabilizer 1.2%, foam opener 1.2%, water 3.5%, the sum of the mass fractions of the above raw materials is 100%; material B is made of the following raw materials by weight fraction: toluene diisocyanate 80.0%, diphenylmethane diisocyanate 20.0%.
[0024] The preparation method is: use a sponge molding machine to obtain lightweight foam foam. The specific processing conditions are: mold temperature 57°C, material A temperature 24°C, material B temperature 22°C, flow rate of the filling head 332 g / s, hydraulic pressure 150Bar , A pump cycle pressure 170Bar, B pump cycle pressure 150Bar, air pressure 7kg / cm 2 , Vacuum breaking pressure - 4 Bar, th...
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