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Preparation method and application of second monomer for acrylonitrile-based copolymer solid-solid phase change material

A technology of acrylonitrile-based copolymers and phase-change materials, which is applied to the preparation of carboxylic acid halides, materials for heat exchange, chemical instruments and methods, etc., and can solve problems such as acrylonitrile-based copolymer phase-change materials that have not yet been seen.

Active Publication Date: 2014-08-06
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Acrylonitrile-based copolymer phase change materials have not been seen within the scope of the applicant's search

Method used

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  • Preparation method and application of second monomer for acrylonitrile-based copolymer solid-solid phase change material
  • Preparation method and application of second monomer for acrylonitrile-based copolymer solid-solid phase change material

Examples

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Embodiment 1

[0063] ①Preparation of the second monomer of acrylonitrile-based copolymer solid-solid phase change material

[0064] 1) Add diethylene glycol n-hexadecyl ether and toluene to a reaction device equipped with a thermometer and a reflux condenser after anhydrous drying, wherein the concentration of diethylene glycol n-hexadecyl ether in toluene is 80wt %, under the protection of nitrogen, stir and increase the temperature of the system to 80 ° C, add elemental sodium and diethylene glycol n-hexadecyl ether to react, wherein the molar ratio of sodium to diethylene glycol n-hexadecyl ether is 5:1; after no bubbles emerge from the liquid surface, let it cool down to room temperature, filter to remove residual sodium, and obtain the reaction stock solution;

[0065] 2) Prepare an acryloyl chloride-toluene solution with a concentration of 10 wt%, the molar ratio of acryloyl chloride to diethylene glycol n-hexadecyl ether is 10:90, and slowly add the acryloyl chloride-toluene solution...

Embodiment 2

[0076] ①Preparation of the second monomer of acrylonitrile-based copolymer solid-solid phase change material

[0077] In embodiment 1, diethylene glycol n-hexadecyl ether is replaced by polyethylene glycol n-docosyl ether (HO(CH 2 CH 2 O) 600 C 22 h 45 ), the temperature was 130°C when elemental sodium was added, and the molar ratio of elemental sodium to polyethylene glycol n-docosyl ether was 1:5; the remaining conditions were the same as in Example 1 to prepare the second monomer with phase transition characteristics- Polyethylene glycol n-behenyl ether monoacrylate with a yield of 85%.

[0078] ②Preparation of acrylonitrile-based copolymer solid-solid phase change materials by emulsion polymerization

[0079] 1) In the reaction vessel, add deionized water with 15 times the mass of the monomer and a compounded emulsifier accounting for 1.5% of the mass of the monomer (the compounded emulsifier is sodium lauryl sulfate and polystyrene with a mass ratio of 7:3 Ethylene ...

Embodiment 3

[0088] ①Preparation of the second monomer of acrylonitrile-based copolymer solid-solid phase change material

[0089] 1) Docosanol (C 42 h 85 OH) and toluene are added to the reaction device equipped with a thermometer and a reflux condenser after anhydrous drying treatment, wherein docosanol (C 42 h 85 OH) concentration in toluene is 50wt%, under the protection of nitrogen, stir and increase the temperature of the system to 110 ° C, add elemental sodium and tetracosanol (C 42 h 85 OH) reacted, wherein the molar ratio of sodium to docosanol was 1.8:1; after no bubbles emerged from the liquid surface, it was left to cool to room temperature, filtered to remove residual sodium, and the reaction stock solution was obtained;

[0090] 2) preparation concentration is the ethacryloyl chloride-toluene solution of 30wt%, ethacryloyl chloride and tetradocosanol (C 42 h 85 The molar ratio of OH) is 45:55. Under the condition of ice-water bath, the ethacryloyl chloride-toluene solut...

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Abstract

The invention discloses a preparation method of a second monomer for an acrylonitrile-based copolymer solid-solid phase change material, a method for preparing the acrylonitrile-based copolymer solid-solid phase change material from the second monomer, and a method for preparing an energy-storage and temperature-adjustment fiber / film from the phase change material prepared from the second monomer. The second monomer is prepared by the steps of enabling polyoxyethylene alkyl ether to react with sodium in methylbenzene, then enabling the reactant to react with an allyl monomer containing acyl chloride groups to obtain a crude product, and washing and carrying out liquid separation on the crude product. The acrylonitrile-based copolymer solid-solid phase change material prepared from the second monomer has the melting point being lower than the decomposition temperature and is applicable to melt spinning. The fiber / film with favorable energy-storage and temperature-adjustment performances can be prepared by mixing the acrylonitrile-based copolymer solid-solid phase change material with a thermal stabilizer and then spinning and filming under molten conditions.

Description

technical field [0001] The invention relates to a second monomer of acrylonitrile and its preparation method and application, in particular to a preparation method of the second monomer of an acrylonitrile-based copolymer solid-solid phase change material and its application. Background technique [0002] Polyacrylonitrile fiber (acrylic fiber) is one of the most important textile polymer fiber materials, and polyacrylonitrile is also the most important carbon fiber raw material. However, the decomposition temperature (250°C) of polyacrylonitrile is lower than its melting point (317°C), so that crosslinking and cyclization have occurred without melting when heated, so the solution spinning process (dry method, wet method) has been used all the time. method and wet and dry method) to produce acrylic fiber. The solution spinning process is long, and there is environmental pollution to varying degrees. Compared with the solution spinning process, the melt spinning process has...

Claims

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Application Information

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IPC IPC(8): C08G65/48C07C69/54C07C69/533C07C67/14C08F290/06C08F220/44C08F220/28C09K5/02D01F6/54D01F6/38D01D5/08C08L51/08C08L33/20B29C47/92B29C48/92
CPCB29C48/92B29C2948/92561B29C2948/92895
Inventor 张兴祥韩娜张智力王栋王乐军于万永
Owner TIANJIN POLYTECHNIC UNIV
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