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a negative ion additive

A technology of negative ion additive and molecular sieve, applied in coating, textile and paper making, polyurea/polyurethane coating, etc., can solve the problem of unfavorable negative ion powder properties, large difference in surface properties between tourmaline powder and high molecular polymer, difficult to uniformly disperse and stabilize There are other problems

Active Publication Date: 2021-04-09
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

[0026] like image 3 Shown is the SEM p...

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 to 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...

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 surface layer thickness is 100μm, and the oven temperature is 102°C; the obtained 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, which belongs to the technical field of automotive interior materials and is used for adding to synthetic leather materials. Since the dispersion and dispersion stability of anion powder directly affect the final quality and various properties of anion products, the dispersion The higher the degree of uniformity, the better its quality performance, and at the same time, the negative ion additives cannot have a negative impact on the production process. The present invention designs and prepares a kind of negative ion additive, is suitable for the production system of polyurethane paint, polyurethane synthetic leather. The negative ion additive invented is tourmaline@13X molecular sieve with a core-shell structure. The tourmaline in the raw material is a powder with a particle size of 6-20 microns, and the particle size of the final product is 8-20 microns. Its dispersion in polyurethane is basically Uniform, the prepared negative ion polyurethane leather has no defects in surface quality, mechanical properties such as breaking strength and elongation at break remain unchanged, and the amount of negative ions emitted is ≥3000 / cm 3 .

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 Patents(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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