A polymer-like solid-solid phase change material with easy process control and its chemical preparation method
A solid-solid phase change material and polymer technology, which is applied in the field of polymer solid-solid phase change materials and chemical preparation, can solve the problem of poor synthesis process performance and phase change heat storage performance, reduced phase change segment mobility, The chemical synthesis reaction is difficult to control and other problems, and the effect of narrowing the phase transition peak width, increasing the phase transition enthalpy, and easy segment crystallization and dissolution can be achieved.
Active Publication Date: 2017-07-21
XUZHOU COLLEGE OF INDAL TECH
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the prior art, polyethylene glycol / polyethylene terephthalate solid-solid phase change materials have been prepared by chemical synthesis, but the chemical synthesis reaction is very violent and difficult to control, and bulky polymers are prone to appear, resulting in phase change in the polymer. The mobility of the changing segment is reduced, the performance of the synthesis process and the heat storage performance of the phase change are very poor, thus losing the use value
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 moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0027] First, raw materials such as polyethylene glycol monomethyl ether, polyethylene glycol, and polyethylene terephthalate are dried, and then the dried 3.8Kg polyethylene glycol monomethyl ether, 5.7Kg polyethylene glycol and 28.5 Kg of acetone is made into a solution, and 0.5Kg of polyethylene terephthalate is added to 9.5Kg of dimethyl sulfoxide to be made into a solution.
[0028] Add 11.86 g of toluene-2,4-diisocyanate and 1.19 g of dibutyltin maleate mixture to the above acetone solution, and pre-react for 30 min at 70° C. under stirring and reflux. Then add the above dimethyl sulfoxide solution, mix well and react at 180°C for 180min.
[0029] The entire pre-reaction and chemical synthesis process adopts magnetic stirring, and the rotating speed of the magnetic stirring bar is 30 rpm.
[0030] After the reaction is complete, the mixture turns into a gel. After washing and filtering for 3 to 4 times, put the light yellow gel in water and soak for more than 2 to 3 hours...
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 |
|---|---|---|
| phase transition temperature | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a high-molecular quasi-solid-solid phase transition material with easily controllable technology and a chemical preparation method, and belongs to the technical field of chemical synthesis of materials. The preparation method comprises: selecting polyethylene glycol as a main energy-storage functional material and methoxypolyethylene glycols as an auxiliary energy-storage functional material for synergic usage, taking tolylene-2,4-diisocyanate as a crosslinking agent, dibutyltin maleate as a catalyst and acetone and dimethyl sulfoxide as solvents, performing chemical synthesis on poly(ethylene terephthalate) to prepare the high-molecular quasi-solid-solid phase transition material. Addition of methoxypolyethylene glycols enables the reaction speed and degree of polyethylene glycol and poly(ethylene terephthalate) to be reduced and enables the reaction to be easily controlled, the chemically-synthesized methoxypolyethylene glycols+ polyethylene glycol / poly(ethylene terephthalate) quasi-solid-solid phase transition material is improved in phase transition enthalpy, and the whole technology has good industrialization application prospect.
Description
technical field [0001] The invention relates to a method of adding polyethylene glycol monomethyl ether to a chemically synthesized polyethylene glycol / polyethylene terephthalate solid-solid phase change material to optimize the process performance and phase change heat storage of the solid-solid phase change material The method for performance specifically relates to a polymer-like solid-solid phase change material and a chemical preparation method with an easy-to-control process, and belongs to the technical field of chemical synthesis of materials. Background technique [0002] Since the solid-solid phase transition material does not appear in a liquid state during the phase transition process, no container is required. Compared with substances such as water that have a phase change, it is easy to use, has a small volume change, is easy to combine with other materials, and can even be used as a matrix for the system. Material; when the functional material is in phase tran...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/02C08G18/76C08G18/48C08G18/42
CPCC09K5/02
Inventor 王艳秋张小萍堵锡华臧亚南
Owner XUZHOU COLLEGE OF INDAL TECH