A kind of microbial degradable thermoplastic polyurethane elastomer and preparation method thereof
A thermoplastic polyurethane and microbial degradation technology, which is applied in the field of polymers, can solve the problems of mechanical property degradation and achieve the effects of improving hydrophilicity, good microbial degradability, and improving microbial degradation performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0046] (1) Preparation of tannin modified hydroxyethyl acrylate:
[0047] Dissolve 25 parts of tannin in the same mass of polyethylene glycol, add 100 parts of hydroxyethyl acrylate to it, and ultrasonically disperse for 1.5 hours to obtain a dispersion; add the dispersion to a reflux condenser and stir In a closed container of the device, the temperature was raised to 75° C., stirred and refluxed for 6 hours to obtain tannin-modified hydroxyethyl acrylate.
[0048] (2) Preparation of thermoplastic polyurethane elastomer:
[0049] Add 45 parts of polymerized polyol (the mass ratio of polypropylene carbonate polyol to polytetrahydrofuran diol is 2:1) and 15 parts of ethanolamine into the container in sequence, and vacuumize at 70°C under the condition of stirring at 1100r / min -0.3kPa to obtain Mixture A; heat 35 parts of hexamethylene diisocyanate to 55°C, mix with Mixture A, then add 10 parts of tannin-modified hydroxyethyl acrylate and stir at 135°C for 2h , and then mature...
Embodiment 2
[0052] (1) Preparation of tannin modified hydroxyethyl acrylate:
[0053] Dissolve 20 parts of tannin in the same mass of polyethylene glycol, add 100 parts of hydroxyethyl acrylate to it, and ultrasonically disperse for 1 hour to obtain a dispersion; add the dispersion to the In a closed container, the temperature was raised to 70° C., stirred and refluxed for 8 hours to obtain tannin-modified hydroxyethyl acrylate.
[0054] (2) Preparation of thermoplastic polyurethane elastomer:
[0055] Add 43 parts of polymeric polyol (the mass ratio of polypropylene carbonate polyol to polytetrahydrofuran diol is 3:1) and 13 parts of ethanolamine into the container in sequence, and vacuumize at 80°C under the condition of stirring at 1000r / min -0.2kPa to obtain Mixture A; heat 33 parts of hexamethylene diisocyanate to 50°C, mix with Mixture A, then add 7 parts of tannin-modified hydroxyethyl acrylate and stir at 130°C for 3h , and then matured at 75°C for 14h to obtain material B; mate...
Embodiment 3
[0058] (1) Preparation of tannin modified hydroxyethyl acrylate:
[0059] Dissolve 30 parts of tannin in the same mass of polyethylene glycol, add 100 parts of hydroxyethyl acrylate to it, and disperse ultrasonically for 2 hours to obtain a dispersion; add the dispersion to the In a sealed container, the temperature was raised to 80° C., stirred and refluxed for 5 hours to obtain tannin-modified hydroxyethyl acrylate.
[0060] (2) Preparation of thermoplastic polyurethane elastomer:
[0061] Add 47 parts of polymeric polyol (the mass ratio of polypropylene carbonate polyol to polytetrahydrofuran diol is 1:1) and 17 parts of ethanolamine into the container in sequence, and vacuumize at 60°C under the condition of stirring at 1200r / min -0.4kPa to obtain Mixture A; heat 37 parts of hexamethylene diisocyanate to 60°C, mix with Mixture A, then add 13 parts of tannin-modified hydroxyethyl acrylate and stir at 140°C for 1h , and then matured at 80°C for 10h to obtain material B; ma...
PUM
| Property | Measurement | Unit |
|---|---|---|
| tensile strength | aaaaa | aaaaa |
| elongation at break | aaaaa | aaaaa |
| elastic recovery rate | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More