Preparation method and driving method of shape-memory polycaprolactone foam
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of polycaprolactone and driving method, which is applied in the field of preparation of shape-memory polycaprolactone foam, can solve problems such as low production efficiency, complex process, and difficult control, and achieve low cost, simple foaming process, and excellent shape The effect on memory performance
Active Publication Date: 2015-07-29
HARBIN INST OF TECH
View PDF0 Cites 8 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0004] The present invention aims to solve the problems of complex process, low production efficiency, high cost and difficult control existing in the existing preparation method, and provides a preparation method of shape memory polycaprolactone foam and its driving method
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment approach 1
[0023] Specific embodiment one: the preparation method of a kind of shape memory polycaprolactone foam of this embodiment is carried out according to the following steps:
[0024] 1. Dissolve polycaprolactone in dichloromethane, stir at room temperature until completely dissolved, and obtain a solution with a mass concentration of polycaprolactone of 30%, then add benzamide peroxide, and stir at room temperature until dispersed Uniformly, obtain polycaprolactone solution; The mass ratio of described benzamide peroxide and polycaprolactone is (10~20):100;
[0025] 2. Pour the polycaprolactone solution obtained in step 1 into the mold, then put it into a microwave oven, and heat it under the condition that the microwave output power is 650W-750W and the microwave intensity is 2400MHz-2500MHz. The heating time does not exceed 2min. After cooling down, a shape-memory polycaprolactone foam is obtained.
[0026] The shape-memory polycaprolactone foam prepared in this embodiment is ...
specific Embodiment approach 2
[0031] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mass ratio of benzamide peroxide and polycaprolactone described in step 1 is 15:100. Other steps and parameters are the same as those in the first embodiment.
specific Embodiment approach 3
[0032] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the output power of the microwave in step 2 is 700W. Other steps and parameters are the same as those in Embodiment 1 or 2.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Property
Measurement
Unit
diameter
aaaaa
aaaaa
pore size
aaaaa
aaaaa
Login to view more
Abstract
The invention relates to a preparation method and a driving method of shape-memory polycaprolactone foam. The invention relates to the field of functional polymer materials, in particular to the preparation method and the driving method of the shape-memory polycaprolactone foam. The invention is intended to solve the problems of complex process, low production efficiency, high cost and uneasy control existing in conventional preparation methods. The preparation method includes the following steps: (1) polycaprolactone is dissolved into dichloromethane, stirring is performed at room temperature until the polycaprolactone is dissolved completely, benzamide peroxide is then added, stirring is performed at room temperature until the benzamide peroxide is dispersed uniformly, and thereby polycaprolactone solution is obtained; (2) the polycaprolactone solution obtained in step 1 is poured into a mold, and is then put into a microwave oven to be heated, and thereby the shape-memory polycaprolactone foam is obtained. The driving method is as follows: under the condition of microwave heating, the shape-memory polycaprolactone foam can be restored to an initial shape within 98s.
Description
technical field [0001] The invention relates to the field of functional polymer materials, in particular to a preparation method of shape-memory polycaprolactone foam and a driving method thereof. Background technique [0002] Shape memory polymers and their composites, as an excitation-responsive smart material, can sense changes in the external environment and respond to external heat, light, electricity, magnetism, water, organic solvents, etc. Return to the initial state. Compared with other shape memory materials, shape memory polymers have many advantages, such as light weight, large deformation, variable stiffness, low cost and easy processing, etc., and are widely used in aerospace (intelligent aircraft and deployable structures), 3D And 4D printing, electronic communication, flexible electronic substrates, automobiles, tissue engineering, smart textiles, biomedicine, self-repair, anti-counterfeiting trademarks and other fields. As a cutting-edge research field, sh...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more