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Anion additive

A technology of negative ion additive and molecular sieve, applied in coating, textile and papermaking, polyurea/polyurethane coating, etc., can solve the problems of performance deterioration of ultrafine powder, large surface energy of tourmaline powder, and the inability of a single particle to exist stably.

Active Publication Date: 2019-12-13
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems in this process at present: the surface energy of tourmaline powder is large, and the surface activity of ultrafine negative ion powder particles is very high. Individual particles cannot exist stably, and tend to agglomerate through mutual attraction, thereby reducing their surface energy to form stable state
Moreover, after agglomeration, it will lead to the deterioration of the performance of the ultrafine powder, which is not conducive to the performance of the negative ion powder, and is more prone to product quality problems.
In the application, the surface properties of tourmaline powder and high molecular polymer are quite different, which makes it more difficult for it to be uniformly dispersed and stable in non-polar polymers. If it is directly filled in organic matter, it will easily lead to some performance degradation of the material, thus Affect the overall comprehensive performance of composite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] a) By mechanical shearing, the tourmaline is made into a powder A with a particle size of 6-20 microns (such as figure 2 shown);

[0021] b) Mix sodium metaaluminate, sodium hydroxide, sodium silicate, and water according to the following molar ratios, SiO 2 :Al 2 o 3 =3~5:1、Na 2 O:SiO 2 =1~1.5:1 and H 2 O:Na 2 O=35~65:1, get Sol B after mixing evenly;

[0022] c) Powder A is added to sol B, the mass ratio is A:B=3~5%, after continuing to stir evenly, stand at room temperature for 3~8h;

[0023] d) Put it into a polytetrafluoroethylene-lined stainless steel reaction kettle, and let it stand at 98±2°C for 5 to 14 hours;

[0024] e) The product was washed with deionized water, filtered, and dried to obtain a tourmaline@13X molecular sieve composite material.

[0025] Such as figure 1 As shown, the diffraction peaks of tourmaline@13X molecular sieve composites correspond to tourmaline and 13X molecular sieve respectively.

[0026] Such as image 3 Shown is the...

Embodiment 2

[0028] Add polyester polyol (PEA) or polyether polyol (PTMG) or a mixture of the two in a certain proportion to a three-necked bottle equipped with a stirrer and a thermometer, add 150°C, and vacuum dry for 9 hours. The tourmaline@13X molecular sieve composite material prepared in Example 1 was dehydrated for 2-3 hours at a vacuum degree of 0.09MPa and a temperature of about 120°C by starting the vacuum pump and agitator. When the temperature is lowered to 40°C, add the measured amount of TDI, stir, slowly raise the temperature to 80°C, keep the temperature at 80-85°C for 2 hours, and then place it at room temperature for 4-5 hours to fully react with TDI, then vacuum defoam for 0.5 hours or so, to prepare a prepolymer, then add a measured amount of chain-extending cross-linking agent 3,3'-dichloro-4,4'-diaminodiphenylmethane (MOCA), stir evenly, and pour it into a preheated mold Vulcanize on a flat vulcanizer at 120°C for 10 minutes, and after demoulding, cure at 100°C for 24...

Embodiment 3

[0033] A kind of surface layer slurry of negative ion polyurethane resin for leather, according to the following components by mass parts composition:

[0034] Waterborne polyurethane resin (Covestro: Bayhydrol A 2601): 100 parts

[0035] Water: 20-40 parts

[0036] Water-based ink (BASF: Joncryl 678): 10-30 parts

[0037] Negative ion additive (ie tourmaline@13X molecular sieve composite material): 3-5 parts.

[0038] The negative ion polyurethane resin surface layer slurry of the present invention is compounded on the base cloth by dry veneering process, the speed is 8m / min, the thickness of the surface layer is 100μm, and the oven temperature is 102°C; the prepared negative ion polyurethane leather has a high surface quality. No defects, mechanical properties such as breaking strength and elongation at break remain unchanged (as shown in the table below), and the amount of negative ions emitted is ≥3000 / cm 3 .

[0039]

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Abstract

The invention discloses an anion additive, and belongs to the technical field of automotive interior materials. The anion additive is added into a synthetic leather material; because dispersion and dispersion stability of an anion powder body directly influence the final quality and various performances of anion products, the dispersion uniformity is higher, and the quality performances of the anion products are higher; and meanwhile, the anion additive cannot cause a negative influence on a production process. The prepared and designed anion additive disclosed by the invention is applied to aproduction system of a polyurethane coating and polyurethane synthetic leather. The anion additive disclosed by the invention is a taltalite @13X molecular sieve having a core-shell structure, the taltalite in the raw material is a powder body with grain size being 6 micrometers to 20 micrometers, the grain size of the final product is 8 micrometers to 20 micrometers, and the dispersion of the product is basically uniform in polyurethane, and prepared anion polyurethane leather has the advantages that the surface quality has no defects, the mechanical performances such as breaking strength and breaking elongation ratio are invariable, and meanwhile, the evapotranspiration amount of anions is more than or equal to 3000 pieces / cm<2>.

Description

technical field [0001] The invention belongs to the technical field of automotive interior materials. Background technique [0002] Negative ion powder, that is, tourmaline powder has the characteristics of permanent electrodes, which can cause a potential difference under small changes in temperature and pressure to ionize the air, in which free electrons will attach to gaseous water and oxygen molecules and convert them into air negative ions. [0003] Because negative ions have the advantages of purifying the air, eliminating odors and harmful gases in the air, relieving fatigue, and promoting human metabolism, such as the development of synthetic leather that can release negative oxygen ions, it is mainly used in small and confined spaces such as airplanes, which produce negative ions. , It is conducive to improving the environment in a small space and improving the sensory experience of drivers and passengers. [0004] Generally, products with negative ion function use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K7/26C08L75/04C09D175/04C09D7/62C08G18/76C08G18/66C08G18/48C08G18/42C08G18/10C08G18/32D06N3/14D06N3/00
CPCC08G18/10C08G18/42C08G18/48C08G18/66C08G18/7614C08K7/26C08K9/10C09D175/04C09D7/62C09D7/70D06N3/0063D06N3/0097D06N3/14D06N2205/10D06N2209/103D06N2209/126D06N2209/165D06N2211/28C08L75/04C08G18/3814
Inventor 丛穆张宇璇张斌郑虹任晓珊张明远滕腾周宇飞刘宏宇任书伯
Owner CHINA FIRST AUTOMOBILE
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