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Thermosensitive composition and solvent-free preparing method thereof

A composition and solvent-free technology, applied in the manufacture of rayon, rayon made of viscose, single-component polyester rayon, etc., can solve the problems of material leakage, achieve low cost, wide range of sources, The effect of reducing manufacturing costs

Inactive Publication Date: 2016-11-16
YUTIAN ENERGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The invention provides a temperature-sensitive composition and a solvent-free preparation method thereof. Temperature-sensitive materials such as phase-change materials and liquid crystals are encapsulated in pores or cavities of porous materials, and then the porous materials are sealed to solve material leakage. question

Method used

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  • Thermosensitive composition and solvent-free preparing method thereof
  • Thermosensitive composition and solvent-free preparing method thereof
  • Thermosensitive composition and solvent-free preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A temperature-sensitive composition and a preparation method thereof are as follows:

[0058] 1) After fully grinding the expanded perlite, sieving to obtain micron-sized expanded perlite powder;

[0059] 2) the hydrated inorganic salt CaCl 2 ·6H 2 O. KNO 3 , alumina, SrCl 2 ·6H 2 After O is mixed, it is added to the expanded perlite powder in (1) in stages, heated, and kept for adsorption; after the adsorption is completed, add Na 2 SiO 3 9H 2 O, insulation adsorption;

[0060] 3) Solidify the silicate into silicon dioxide to obtain the temperature-sensitive composition using inorganic hydrated salt as the temperature-sensitive material.

[0061] like figure 1 Shown in is a schematic diagram of the principle of the solvent-free preparation method of the temperature-sensitive composition. In the figure, 1 is a porous material, 2 is a pore structure, and 3 is a partially enlarged porous material; A is the process of gradually absorbing inorganic hydrate salts, ...

Embodiment 2

[0066] A temperature-sensitive composition and a preparation method thereof are as follows:

[0067] 1) Reflux the commercially available silica in the ethanol solution of silane coupling agent KH550 for a certain period of time, carry out hydrophilic modification on the nanopores of silica, filter and sieve to obtain submicron porous silica powder ;

[0068] 2) Add the liquid crystal material to the silicon dioxide powder in (1) one by one, heat, heat-preserve and adsorb; after the adsorption is completed, add TDI (toluene diisocyanate) to heat-preserve and adsorb;

[0069] 3) adding a small amount of butanediol and triethylenetetramine, raising the temperature to solidify and crosslink the TDI, and obtain the temperature-sensitive composition using liquid crystal as the temperature-sensitive material.

[0070] 4) blending and granulating the obtained temperature-sensitive composition with polylactic acid pellets, and then melt-spinning to obtain a temperature-sensitive poly...

Embodiment 3

[0073] A temperature-sensitive composition and a preparation method thereof are as follows:

[0074] 1) Sieving commercially available silicon dioxide to obtain submicron porous silicon dioxide powder;

[0075] 2) Add polyethylene glycol to the silicon dioxide powder in (1) one by one, heat, heat-insulate and adsorb; after the adsorption is completed, add epoxy resin, heat-insulate and adsorb;

[0076] 3) adding an epoxy curing agent, raising the temperature to cure and crosslink the epoxy resin, and obtain the temperature-sensitive composition using polyethylene glycol as the temperature-sensitive material.

[0077] 4) blending and granulating the obtained temperature-sensitive composition with polypropylene cutting pellets, and then melt-spinning to obtain a temperature-sensitive polypropylene fiber.

[0078] like Figure 4 Shown is the DSC standard curve of the temperature-sensitive polypropylene fiber with a temperature-sensitive material content of about 25% (mass ratio...

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Abstract

The invention discloses a thermosensitive composition and a solvent-free preparing method thereof. The thermosensitive composition is prepared from a thermosensitive material, a porous material and a pore sealing material. The preparing method of the thermosensitive composition comprises the steps that pore canals of the porous material are filled with the thermosensitive material through a step-by-step adsorption process, and encapsulation is carried out with the pore sealing material. By means of the preparing method, a solvent can be omitted, so that environment pollution is relieved, and manufacturing cost is reduced. The thermosensitive composition and the solvent-free preparing method thereof are especially suitable for wet spinning or melt spinning, and have significant application value in the fields such as temperature control, energy storage and release, textiles and garments, building materials, response control over electronic equipment, manufacturing of thermosensitive instruments, image display, man-machine interaction, intelligent apparels and anti-fake recognition.

Description

technical field [0001] The invention relates to the field of functional materials, in particular to a temperature-sensitive composition and a solvent-free preparation method thereof. Background technique [0002] Temperature-sensitive materials, which can perceive and respond to changes in ambient temperature, can integrate self-detection, self-judgment, and self-processing, and are an important smart material with a wide range of potential applications. [0003] However, due to temperature sensitivity, temperature-sensitive materials often undergo sudden changes in properties such as phase state (solid-liquid transition), volume change, etc., which creates troubles for the production of these materials. For this reason, people have developed microcapsule technology, that is, limiting temperature-sensitive materials in a tiny container, while macroscopically appearing as a solid state, reducing the impact on use. For example, the Chinese invention patent (application number...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10D01F6/46D01F2/08C09D7/12D06M11/79D06M11/155D06M11/65D06M11/45
CPCD01F6/92C09D7/61D01F1/10D01F2/08D01F6/46D06M11/155D06M11/45D06M11/65D06M11/79
Inventor 沈轲黄晓义冯欢杜兔平
Owner YUTIAN ENERGY CO LTD
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