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Method for preparing intelligent temperature-controlpolyester chip with in-situ polymerization method

A technology of intelligent temperature control and in-situ polymerization, applied in the field of preparing polyester chips, can solve the problems of no polymerizable groups and inability to form chemical bonds with PET resin, and achieve a simple method, easy large-scale operation, and low haze. Effect

Inactive Publication Date: 2015-04-01
佛山金智节能膜有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent application number: 201310747167.x mentions a method for preparing a PET film with uniform dispersion of vanadium dioxide, in which vanadium dioxide particles are added to the polymerization process of the resin to prepare polyester chips, but the vanadium dioxide particles are not processed Organic modification of organic functional groups, no polymerizable groups on the surface of vanadium dioxide, unable to form chemical bonds with PET resin during polymerization, ensuring more stability in post-processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The method for preparing intelligent temperature-controlled polyester slice 1 by in-situ polymerization method comprises the following steps:

[0042] Process (1): Take the mass parts of each component as follows:

[0043] Vanadium dioxide nano powder, 20 parts

[0044] Ethanol (dispersion medium), 80 parts

[0045] Silane coupling agent (containing polyvinyl alcohol group, terminal functional group is hydroxyl group, organic modifier), 1 part

[0046] Polyvinylpyrrolidone (dispersion aid), 0.05 parts;

[0047] First, the vanadium dioxide nano-powder and the dispersion medium were stirred and dispersed at a high speed of 1500 rad / min for 30 minutes, and ultrasonically dispersed for 30 minutes, and then the dispersion aid and silane coupling agent were added to it, and stirred at a constant temperature of 70 °C on a high-speed mixer for 2 h, centrifuge again, and vacuum dry the obtained vanadium dioxide composite powder at 60°C;

[0048] Step (2): Vanadium dioxid...

Embodiment 2

[0050] Process (1): Take the mass of each component as follows:

[0051] Vanadium dioxide nanopowder (doped with tungsten, particle size 20~100 nm), 15 parts

[0052] Isopropanol (dispersion medium), 85 parts

[0053] Silane coupling agent (carboxyl-terminated long chain, organic modifier), 1 part

[0054] Organomodified polysiloxane dipropylene glycol monomethyl ether solution (dispersion aid), 0.08 parts

[0055] First disperse the vanadium dioxide nano-powder and dispersion medium at a high speed of 1000 rad / min for 20 minutes, and ultrasonically disperse for 60 minutes, then add the dispersion aid and silane coupling agent, and stir at a constant temperature of 80 ° C on a high-speed mixer for 2 h, then centrifugally precipitated, and vacuum-dried at 60° C. to obtain vanadium dioxide nano-powders with long chain-containing carboxyl groups on the surface;

[0056] Step (2): Vanadium dioxide nanopowder with functional groups and ethylene glycol are mixed in a mass ratio o...

Embodiment 3

[0058] Process (1): Take the mass of each component as follows:

[0059] Vanadium dioxide nanopowder (doped with molybdenum, particle size 20~100 nm), 25 g

[0060] Isopropanol (dispersion medium), 75 g

[0061] Titanate coupling agent (containing epoxy group, organic modifier), 1 g

[0062] Polyvinyl alcohol (dispersion aid), 0.15g

[0063] First disperse the vanadium dioxide nanopowder and dispersion medium at a high speed of 1500 rad / min for 20 minutes, and ultrasonically disperse for 60 minutes, then add the dispersion aid and titanate coupling agent, and keep the temperature on the high-speed mixer at 80 ℃ Stir for 2 h, then centrifuge to precipitate, and vacuum-dry at 70 °C to obtain vanadium dioxide nanopowders with epoxy groups on the surface;

[0064] Step (2): Vanadium dioxide nanopowder with functional groups and ethylene glycol are mixed in a mass ratio of 1:10 and dispersed, and then mixed with terephthalic acid to form a uniform slurry, ethylene glycol and ter...

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Abstract

The invention discloses amethod for preparing an intelligent temperature-controlpolyester chip with an in-situ polymerization method. The method comprises steps as follows: Step 1, surfaces of vanadium dioxidenano-powder with the chemical composition of V1-xMxO2 are inoculated with polymerizableorganic functional groups, wherein M refers to a doped element, and x is larger than or equal to 0 and smaller than or equal to 0.5; Step 2, thevanadium dioxidenano-powder provided with the organic functional groups is uniformly dispersed in an ethylene glycol solution, uniform slurry is prepared from the ethylene glycol solution and terephthalic acid, and the polyester chip is synthesized. Thepolyester chip prepared with the method forms a film throughtwo-way stretching, can be applied to glass films and can also be produced into plates or sheets, and the prepared films or sheets are high in transparency, low in haze and high in ageing resistance. Thepolyester chip is widely applied and can be applied to glass, wall surfaces and transportation means such as vehicles, ships and the like to control incoming and outgoing of infrared rays and heat energy to achieve an intelligent temperature-control purpose.

Description

technical field [0001] The invention relates to a method for preparing polyester chips, in particular to a method for preparing intelligent temperature-controlled polyester chips by in-situ polymerization. Background technique [0002] Vanadium dioxide material has a first-order phase transition characteristic, which can sense changes in ambient temperature and respond intelligently to this change to achieve selective transmission or shielding of sunlight. Usually when the ambient temperature is lower than the phase transition temperature, the film or coating containing vanadium dioxide is almost completely transparent to visible light and mid-infrared light in sunlight; when the temperature exceeds the semiconductor-metal phase transition temperature of vanadium dioxide At this time, the vanadium dioxide undergoes a phase change and transforms into the R phase. At this time, the material can selectively block the mid-infrared light and achieve the purpose of transparent (vi...

Claims

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Application Information

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IPC IPC(8): C08G63/183C08G63/78C08K9/06C08K9/04C08K3/22C08L67/02
Inventor 刘奕燎李永鸿吴耀根陈广建
Owner 佛山金智节能膜有限公司
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