Polyamide elastomer as well as preparation method and application thereof
A polyamide elastomer and elastic technology, applied in the field of polyamide elastomer and its preparation, can solve the problems of polyamide elastomer transparency and mechanical properties that need to be improved
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0046] According to the method for preparing the above-mentioned polyamide elastomer in the embodiment of the present invention, a prepolymer is obtained by adding pentamethylene diamine diacid salt, caprolactam, a catalyst, and a dicarboxylic acid under nitrogen protection in a reaction kettle, and then the prepolymer is prepared The polymer reacts with the amino-terminated polyether, and finally the material is discharged, cut and extracted with boiling water to remove residual monomers and oligomers, that is, the above-mentioned polyamide with excellent transparency and mechanical properties can be prepared in two steps by using the method of this application elastomer.
[0047] It should be noted that the features and advantages described above for the polyamide elastomer are also applicable to the method for preparing the polyamide elastomer, and will not be repeated here.
[0048] In a fourth aspect of the invention, the invention provides an elastic article. According ...
Embodiment 1
[0051] The method for preparing pentamethylenediamine isophthalate comprises the steps:
[0052] Add pentamethylenediamine to the salt-making container first, then rinse the container containing pentamethylenediamine with deionized water several times and pour the residual liquid into the salt-making container, then add the remaining deionized water into the salt-making container and add the second Sodium phosphate, and finally slowly add isophthalic acid into the salt making container in batches (wherein the molar ratio of pentamethylenediamine and isophthalic acid is 1.02:1, the quality of pentamethylenediamine and isophthalic acid and the quality of water The ratio is 8:2, the addition of sodium hypophosphite is 200ppm), stirring while adding, until the isophthalic acid is completely dissolved, then sampling the pH value of the mixed salt solution to be between 7.2 and 7.5, and finally using spray drying equipment to make Pentamethylenediamine isophthalate particles with a ...
Embodiment 2
[0056] The method for preparing pentamethylenediamine isophthalate is the same as in Example 1;
[0057] The method for preparing polyamide elastomer comprises the steps:
[0058] Add 1400 gram caprolactam, 1200 gram terminal amino group polypropylene glycols (the number average molecular weight is 2000), 400 gram above-mentioned pentamethylenediamine isophthalates, 90 gram adipic acid, 3 gram concentrated phosphoric acid, 1 gram in the polymerization still of 10L. 1 gram of concentrated sulfuric acid and 150 grams of deionized water, heated up to 200°C for 2 hours under the protection of high-purity nitrogen, then heated up to 250°C and evacuated to 800Pa for 4 hours, discharged, cooled, pelletized, extracted, and dried. A finished polyamide elastomer is obtained.
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size (mesh) | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More