Preparation method of biomass based lightweight window profile
A biomass and window technology, applied in window/door frame, leaf frame, etc., can solve the problems of poor combination of lignin component and polyurethane, and inability to replace lignin component, so as to achieve strong screw holding force and light weight , the effect of high economic benefit
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Embodiment 1
[0036] This embodiment provides a method for preparing a biomass-based lightweight window profile. The steps include: preparing a hollow-core biomass-based thermoplastic window profile, preparing a biomass-based polyurethane rigid foam material, and preparing a biomass-based lightweight window profile, among them,
[0037] The steps of preparing hollow-core biomass-based thermoplastic window profiles include:
[0038] 1) Lignin dehydration:
[0039] Put the lignin in a vacuum reaction kettle, turn on the vacuum system, control the vacuum in the kettle to 0.06MPa, first raise the temperature in the kettle to 75°C for 10 minutes, then increase the temperature in the kettle to 110°C for 12 minutes and then cool down Discharge at 35°C so that the moisture content of lignin is below 5%;
[0040] 2) Put the lignin into a fine pulverizer for pulverization, and select 400 mesh lignin after pulverization;
[0041] 3) Select 5 parts of compatibilizing plasticizer according to mass parts and put...
Embodiment 2
[0056] This embodiment provides a method for preparing a biomass-based lightweight window profile. The steps include: preparing a hollow-core biomass-based thermoplastic window profile, preparing a biomass-based polyurethane rigid foam material, and preparing a biomass-based lightweight window profile, among them,
[0057] The steps of preparing hollow-core biomass-based thermoplastic window profiles include:
[0058] 1) Dehydration of lignin;
[0059] Put the lignin in a vacuum reaction kettle, turn on the vacuum system, control the vacuum in the kettle to 0.09MPa, first raise the temperature in the kettle to 90°C for 15 minutes, then increase the temperature in the kettle to 120°C for 20 minutes and then cool down Discharge at 45°C so that the moisture content of lignin is below 5%;
[0060] 2) Put the lignin into a fine pulverizer for pulverization, and select 600 mesh lignin after pulverization;
[0061] 3) Select 10 parts of compatibilizing plasticizer according to the number of ...
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