Rigid foam polyurethane thermal insulation material
A technology of rigid polyurethane foam and thermal insulation materials, applied in the field of rigid polyurethane thermal insulation materials, which can solve problems such as lack of active hydrogen, foam and shell shedding, shell deformation, etc., achieve excellent compressive strength and avoid deformation of the water tank
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0032] Example 1
[0033] First prepare polyether polyol I, the process is as follows:
[0034] (1) Weigh 80g of lignin, 40g of water, 5g of lignin peroxidase, 1g of catalase, 1g of furan acetaldehyde and 5g of furfuryl alcohol in a reactor at a reaction temperature of 80°C, stir and react for 5 hours to obtain Enzymatic hydrolysis of modified lignin;
[0035] (2) Mix 100g of enzymatically hydrolyzed modified lignin, 300g of glycerol, 200g of diethylene glycol and 0.03g of Pd-Fe catalyst in the reactor, control the reaction temperature to 120°C, and bubbling with nitrogen from the bottom of the reactor. , Then vacuumize, add 8 g of propylene oxide, and conduct a sealed reaction at normal pressure for 2 hours to obtain the polyether polyol I with a functionality of 4.6 and a hydroxyl value of 400 mgKOH / g.
[0036] Then prepare polyether polyol II, the process is as follows:
[0037] (1) Weigh 40 g of ethylene glycol and 3 g of magnesium chloride to 200 g of peanut oil, control the reac...
Example Embodiment
[0040] Example 2
[0041] First prepare polyether polyol I, the process is as follows:
[0042] (1) Weigh 50g of lignin, 30g of water, 3g of lignin peroxidase, 2g of catalase, 3g of furan acetaldehyde and 10g of furfuryl alcohol in a reactor at a reaction temperature of 80°C, stir and react for 5 hours to obtain Enzymatic hydrolysis of modified lignin;
[0043] (2) Mix 100g of enzymatically hydrolyzed modified lignin, 250g of glycerol, 100g of diethylene glycol and 0.01g of Pd-Fe catalyst in the reactor, control the reaction temperature at 120℃, and bubbling with nitrogen from the bottom of the reactor for reaction , Then evacuated, added 4 g of propylene oxide, and reacted under normal pressure for 2 hours to obtain the polyether polyol I with a functionality of 5.0 and a hydroxyl value of 400 mgKOH / g.
[0044] Then prepare polyether polyol II, the process is as follows:
[0045] (1) Weigh 20 g of ethylene glycol and 1 g to 100 g of magnesium chloride in peanut oil, control the react...
Example Embodiment
[0048] Example 3
[0049] First prepare polyether polyol I, the process is as follows:
[0050] (1) Weigh 100g of lignin, 50g of water, 2g of lignin peroxidase, 3g of catalase, 8g of furan acetaldehyde and 6g of furfuryl alcohol in a reactor at a reaction temperature of 80°C, stir and react for 5 hours to obtain Enzymatic hydrolysis of modified lignin;
[0051] (2) Mix 100g of enzymatically hydrolyzed modified lignin, 350g of glycerol, 250g of diethylene glycol and 0.05g of Pd-Fe catalyst in the reactor, control the reaction temperature to 120℃, and bubbling with nitrogen from the bottom of the reactor for reaction , And then evacuated, add 10 g of propylene oxide, and react under normal pressure for 2 hours to obtain the polyether polyol I with a functionality of 4.7 and a hydroxyl value of 410 mgKOH / g.
[0052] Then prepare polyether polyol II, the process is as follows:
[0053] (1) Weigh 50 g of ethylene glycol and 5 g of magnesium chloride to 300 g of peanut oil, control the reac...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap