A kind of modified eucommia gum/polylactic acid thermoplastic elastomer with shape memory effect and preparation method thereof
A technology of thermoplastic elastomer and memory effect, applied in the field of modified eucommia gum/polylactic acid thermoplastic elastomer and its preparation, can solve the problems of poor impact strength, low recovery rate, low mechanical properties, etc., and achieve low processing energy consumption , good elasticity, high toughness effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0033] Preferably, the preparation method of the modified eucommia gum comprises the following steps: 1) take eucommia gum, purify; take modified monomer, the amount of modified monomer is 10-25% of the weight of eucommia gum, and the modified monomer It is glycidyl methacrylate or glycidyl acrylate; the oxidizing agent is used in an amount of 0.1-0.3% of the weight of Eucommia gum; the initiator is used in an amount of 0.15-0.25% of the weight of Eucommia gum; 2) the Step 1) The obtained eucommia gum, modified monomer and oxidant are mixed at 120-150° C. and 30-100 r / min, and then an initiator is added for graft modification. The modification time is 5-20 minutes. Obtain a crude product; 3) Purify the crude product obtained in step 2), dry and granulate to obtain modified Eucommia gum.
[0034] Further, the oxidizing agent is any one or more of antioxidant 1010, antioxidant 1076, antioxidant 168, antioxidant 626, and antioxidant DLTDP.
[0035] Further, the initiator is any ...
Embodiment 1
[0045] A kind of preparation method of the modified Eucommia gum / polylactic acid thermoplastic elastomer with shape memory effect of the present invention, comprises the following steps:
[0046] Preparation of S1 Modified Eucommia Gum
[0047] 1) Get Eucommia gum 153g, the weight-average molecular weight of Eucommia gum is 50000, the polydispersity index of Eucommia gum is 3, first dissolve Eucommia gum, remove impurity, add ethanol, make Eucommia gum precipitate, obtain pure Eucommia gum;
[0048] 2) Take 27g of modified monomer—glycidyl methacrylate, 0.36g of antioxidant 1010, and 0.38g of initiator DCP;
[0049] 3) Add the eucommia gum obtained in step 1) and the glycidyl methacrylate and antioxidant 1010 obtained in step 2) to a torque rheometer at 140°C, and mix for 8 minutes at a speed of 60r / min. Then, add initiator DCP, graft modification, modification time is 10min, get crude product;
[0050] 4) Extract the crude product obtained in step 3) with acetone for 2 days...
Embodiment 2
[0057] A kind of preparation method of the modified Eucommia gum / polylactic acid thermoplastic elastomer with shape memory effect of the present invention, comprises the following steps:
[0058] Preparation of S1 Modified Eucommia Gum
[0059] 1) Get Eucommia gum 153g, the weight-average molecular weight of Eucommia gum is 50000, the polydispersity index of Eucommia gum is 3, first dissolve Eucommia gum, remove impurity, precipitate, get pure Eucommia gum;
[0060] 2) Take 27g of modified monomer—glycidyl acrylate, 0.36g of antioxidant 1010, and 0.23g of initiator DCP;
[0061] 3) Add the eucommia gum obtained in step 1) and the glycidyl acrylate and antioxidant 1010 obtained in step 2) to a torque rheometer at 120°C, and mix for 10 minutes at a speed of 100r / min, and then, Add initiator DCP, graft modification, modification time is 5min, get crude product;
[0062] 4) Extract the crude product obtained in step 3) with acetone for 3 days, dry it in vacuum to constant weight...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| polydispersity index | aaaaa | aaaaa |
| polydispersity index | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More