A kind of preparation method of attapulgite modified lignin type polyurethane material
A technology of polyurethane material and attapulgite, which is applied in the field of preparation of attapulgite-modified lignin-type polyurethane material, can solve the problems of reducing the flexibility and elongation of polyurethane, achieve improved mechanical properties, low price, and avoid stress concentration Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0031] (1) Preparation of acid-treated attapulgite: Weigh 50g of the original attapulgite, add 250ml of distilled water containing 25ml of hydrochloric acid, stir at 50°C for 3 hours, filter, wash and dry, then grind into powder to obtain acid-treated attapulgite HAT.
[0032] (2) Weigh 6g of dry alcoholyzed lignin and dissolve it in 100ml of dimethylformamide (DMF), then add 100g of polyethylene glycol PEG 1000 and stir at 60°C for 30min to make it fully mixed. Then add 2g of HAT to compound to obtain polyol.
[0033] (3) The compounded polyol was uniformly mixed with 1.5 g of dibutyltin dilaurate, 2.2 g of triethylenediamine, and 10.6 g of trimethylolpropane to obtain a mixed solution.
[0034] (4) Add a certain amount of toluene diisocyanate to the mixed solution in step (3), adjust the isocyanate index (n(-N°CO):n(-OH)) to 1:1.5, and react under closed stirring at 90°C for 30 minutes, After the reaction was complete, the obtained resin was added to deionized water contai...
Embodiment 2
[0036] (1) Preparation of acid-treated attapulgite: Weigh 50 g of the original attapulgite, add 250 ml of distilled water containing 25 ml of hydrochloric acid, stir at 60°C for 3 hours, filter, wash and dry, then grind into powder to obtain acid-treated attapulgite HAT.
[0037] (2) Weigh 15g of dry alkali lignin and dissolve it in 100ml of toluene, then add 100g of polycaprolactone diol and stir at 60°C for 30min to make it fully mixed. Then add 6g of HAT, compound to obtain complex polyol.
[0038] (3) The compounded polyol was uniformly mixed with 1.6 g of stannous octoate, 2.4 g of triethylenediamine, and 11.5 g of dipropylene glycol to obtain a mixed solution.
[0039] (4) Add a certain amount of diphenylmethane diisocyanate to the mixed solution in (3), adjust the isocyanate index (n(-NCO):n(-OH)) to 2:1, and react under closed stirring at 70°C for 60min After the reaction is complete, add deionized water containing NaOH to the obtained resin, and emulsify for 30 minu...
Embodiment 3
[0041] (1) Preparation of acid-treated attapulgite: Weigh 50 g of the original attapulgite, add 250 ml of distilled water containing 25 ml of hydrochloric acid, stir at 60°C for 3 hours, filter, wash and dry, then grind into powder to obtain acid-treated attapulgite HAT.
[0042] (2) Weigh 15g of dry acid lignin and dissolve it in 100ml of acetone, then add 100g of polyethylene adipate diol and stir at 60°C for 30min to make it fully mixed. Then add 30gHAT, and obtain compound polyol after dispersion.
[0043] (3) Mix the compound polyol with 1.6g of stannous octoate, 2.4g of triethylenediamine, and 11.5g of castor oil to obtain a mixed solution.
[0044] (4) Add a certain amount of xylylene diisocyanate to the mixed solution in (3), adjust the isocyanate index (n(-NCO):n(-OH)) to 2:1, and react under closed stirring at 90°C After 30 minutes, after the reaction is complete, add deionized water containing NaOH to the obtained resin, and emulsify for 30 minutes. The prepared ...
PUM
Property | Measurement | Unit |
---|---|---|
tensile stress | aaaaa | aaaaa |
tensile stress | aaaaa | aaaaa |
tensile stress | aaaaa | aaaaa |
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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com