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Surface treatment method for titanium dioxide applied to chinlon delustering agent

A titanium dioxide and surface treatment technology, applied in chemical instruments and methods, dyed low-molecular-weight organic compound treatment, dyed high-molecular-weight organic compound treatment, etc. The effect of increasing the coating rate and strong anti-pulverization performance

Inactive Publication Date: 2020-05-08
江苏华力索菲新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, my country has completed the localization of matting agents for polyester chemical fibers, but the domestication of titanium dioxide matting agents for other small varieties of chemical fibers and nylon cannot be made locally.
[0004] In the patent CN101565566B, a high-quality matting agent composite surface treatment and processing method is provided, which solves the problem by coating a layer of silicon ions on the surface of titanium dioxide and then coating aluminum ions, and adopts the method of secondary coating. Applied in nylon extinction due to TiO 2 Insufficient weather resistance, with the extension of time, the problem of extinction quality decline;
[0005] In the aforementioned scheme, although the method of two-layer inorganic coating is adopted, due to the presence of TiO in the coating process 2 Inhomogeneous dispersion and different hydrolysis speeds of silicic acid lead to competing reactions between core coating and film coating, resulting in low coating rate, poor coating shape, large particle size and other quality reasons

Method used

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  • Surface treatment method for titanium dioxide applied to chinlon delustering agent
  • Surface treatment method for titanium dioxide applied to chinlon delustering agent
  • Surface treatment method for titanium dioxide applied to chinlon delustering agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A titanium dioxide surface treatment method for nylon matting agent, comprising the following steps:

[0030] Step 1. In deionized water, add TiO 2 Powder, so that the content of titanium dioxide in the whole system is 10%-30%, stir evenly, and the added mass is TiO 2 0.5% of the steric hindrance type dispersant of the powder mass; the steric hindrance type dispersant is diluted with 2 to 5 times of its mass in deionized water and added in a downstream manner;

[0031] Before the first coating, add 0.3% of the slurry mass of ammonia water to the slurry, and use ultrasonic vibration operation with a power of 300W for 10-15min to make the TiO 2 The aqueous solution of the powder is uniform TiO 2 slurry;

[0032] Step 2, heating the above slurry to 80-85°C, 2 Add sodium silicate in the slurry, the addition amount of described sodium silicate is: SiO 2 :TiO 2 =0.02~0.05:1, stir, adjust the pH value of the slurry with dilute sulfuric acid to 7.0~8.0; when adjusting the...

Embodiment 2

[0041] Add 1000Kg of deionized water into the reaction kettle, and add 300Kg of titanium dioxide into the deionized water, wherein, titanium dioxide is anatase titanium dioxide, its mesh number is 325 mesh, take 1.5Kg of steric hindrance type dispersant, here space The steric hindrance type dispersant adopts sodium dodecylbenzenesulfonate, and the sodium dodecylbenzenesulfonate is miscible with 7.5Kg deionized water, stirred evenly, and the titanium dioxide slurry in the reaction kettle and the diluted methane The steric hindrance type dispersant is introduced into the ultrasonic reaction device at the same time. The power of the ultrasonic reaction device is 300W, and ultrasonic vibration is added while adding, and 3.9Kg of ammonia water is added to it during ultrasonication. Among them, ammonia water is an industrial-grade synthetic product, and its mass fraction is 25-28%, the ultrasonic shock time is 15min;

[0042] Transfer the above slurry to a heated stirring tank, heat...

experiment example

[0057] Embodiment 1 product test data (see table 1) and test standard;

[0058] Table 1

[0059]

[0060]

[0061] The quality requirements of titanium dioxide raw materials meet the national testing standard GB1706-2006 for titanium dioxide raw materials.

[0062] Adopt XRF (X-ray fluorescence spectrum) to carry out result analysis to the content of coated titanium dioxide product (embodiment 1), the specific data after analysis are shown in Table 2;

[0063] Table 2

[0064] Element Wt% At% OK 35.80 62.02 K 01.02 01.04 SiK 00.90 00.89 TiK 62.29 36.05

[0065] It can be seen from Table 2 that the coating amount of aluminum in titanium dioxide is 1.92%; it is at an excellent level in the national standard;

[0066] product testing:

[0067] Determination of the purity of titanium dioxide according to GB1706-2006, see the attached Figure 4 ;

[0068] According to GB1717-1986 Determination of PH of Pigment Water Suspensi...

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Abstract

The invention discloses a surface treatment method for titanium dioxide applied to a chinlon delustering agent. The surface treatment method for titanium dioxide comprises the steps of ultrasonic dispersion, silicon oxide coating, aluminum oxide coating and drying. According to the method, the method of silicon coating at first and aluminum coating next is adopted, so the delustering durability ofa titanium dioxide product is improved; mixed action of ammonia water and ultrasonic vibration is adopted for activation of hydroxyl groups on the surface of titanium dioxide, so the coating rate ofsilicon ions and aluminum ions on the surface of titanium dioxide is increased; and a pH value is adjusted by adopting a steric hindrance type dispersing agent and a concentration varying type dilutesulfuric acid solution, so the situation that silicic acid is nucleated and deposited on the surface of TiO2 due to over-high local acidity can be effectively prevented, the surface smoothness of a coating film is improved, and the titanium dioxide delustering agent with a better form is obtained. The method is simple to operate, raw materials are easy to obtain, and the obtained titanium dioxideis uniform in surface coating form and high in coating rate, has a particle size in a range of 0.1 micrometer to 0.17 micrometer and meets the national standard of delustering agents for chinlon in China.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment. More particularly, the present invention relates to a kind of titanium dioxide surface treatment method that is used for nylon matting agent. Background technique [0002] Nylon is a kind of textile. In addition to the common characteristics of synthetic fibers such as corrosion resistance, mildew resistance, and no fear of insects, it also has exclusive characteristics such as high breaking strength and wear resistance; it also has some disadvantages, such as Young's mold Small amount, easy to deform during use, poor heat resistance, easy to turn yellow under sunlight or ultraviolet radiation. [0003] In order to make synthetic chemical fibers and natural fibers have similar transparency, it is necessary to add a certain amount of matting agent. TIO 2 It is an inorganic oxide, specially treated TiO 2 It has good covering rate and refractive index, and is widely used as a mat...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/06C09C3/08C09C3/10D01F1/10D01F6/90
CPCC09C1/3661C09C1/3669C09C1/3676C09C1/3692C09C3/006C09C3/063C09C3/08C09C3/10D01F1/10D01F6/90
Inventor 葛晨鑫吴华吴栋梁柏杨仇燕陈美吉张国斌
Owner 江苏华力索菲新材料有限公司
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