Preparation method of high-dispersity nano titanium dioxide/melamine resin for plastic products

A nano-titanium dioxide, melamine technology, applied in the direction of sustainable manufacturing/processing, chemical industry, climate sustainability, etc., can solve the problems such as the influence of the dispersibility of titanium dioxide, increase energy consumption, cost increase, etc., and achieve increased viscosity , Save production costs, improve the effect of dispersion

Active Publication Date: 2021-07-06
杭州臻朗光电科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN106118140B discloses a preparation method of high-whiteness, high-temperature-resistant color master grade titanium dioxide, which adopts different compound salt calcination processes to regulate particle size and inorganic coating and organic coating treatment, and finally prepares a kind of titanium dioxide for different colors. Titanium dioxide for plastic products, although this technical scheme prepares a fine-grained titanium dioxide and improves the resistance of titanium dioxide, but the process uses calcination to increase energy consumption, resulting in increased costs, and does not describe the dispersion of titanium dioxide for plastics. The influence of product performance

Method used

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  • Preparation method of high-dispersity nano titanium dioxide/melamine resin for plastic products
  • Preparation method of high-dispersity nano titanium dioxide/melamine resin for plastic products
  • Preparation method of high-dispersity nano titanium dioxide/melamine resin for plastic products

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Embodiment 1

[0021] A kind of highly dispersed nano-titanium dioxide / melamine resin for plastic products prepared by the embodiment of the present invention 1, it specifically includes the following steps:

[0022] (1) Under magnetic stirring, mix 5mL glycerin and 6.3g melamine evenly, add 5mL polyethylene glycol and heat in water for 20min, then add 20mL isopropanol and stir evenly, then add 1mol / L hydrochloric acid to adjust the pH to 4 , then at 700rpm / min speed, add 5mL titanium tetrachloride dropwise, stir rapidly for 10min, until the test solution no longer flows, forming a gel-like titanium dioxide precursor;

[0023] (2) Centrifuge the titanium dioxide precursor prepared in step (1), then mix and grind the isolated solid product with 0.6% of its mass fraction of sodium stearate, then add 10mL of formaldehyde, and Ultrasonic dispersion for 1 hour, and during this process, triethanolamine was added to adjust the pH to 9 to maintain a stable polymerization reaction, and then the produ...

Embodiment 2

[0027] A kind of highly dispersed nano-titanium dioxide / melamine resin for plastic products prepared by the embodiment of the present invention 2, it specifically comprises the following steps:

[0028] (1) Under magnetic stirring, mix 10mL glycerin and 12.6.g melamine evenly, add 5mL polyethylene glycol and heat in water for 20min, then add 20mL isopropanol and stir evenly, then add 1mol / L hydrochloric acid to adjust the pH to 4. Then, at 700 rpm / min, add 5 mL of titanium tetrachloride dropwise, and stir rapidly for 10 minutes until the test solution no longer flows, forming a gel-like titanium dioxide precursor;

[0029] (2) Centrifuge the titanium dioxide precursor prepared in step (1), then mix and grind the isolated solid product with 0.3% sodium stearate accounting for its mass fraction, then add 20mL formaldehyde, and Ultrasonic dispersion for 1 hour, and during this process, triethanolamine was added to adjust the pH to 9 to maintain a stable polymerization reaction, a...

Embodiment 3

[0033] A kind of highly dispersed nano-titanium dioxide / melamine resin for plastic products prepared by the embodiment of the present invention 3, it specifically comprises the following steps:

[0034](1) Under magnetic stirring, mix 10mL glycerin and 12.6.g melamine evenly, add 5mL polyethylene glycol and heat in water for 20min, then add 20mL isopropanol and stir evenly, then add 1mol / L hydrochloric acid to adjust the pH to 4. Then, at 700rpm / min, add 2mL titanium tetrachloride dropwise, stir rapidly for 10min, until the test solution no longer flows, forming a gel-like titanium dioxide precursor;

[0035] (2) Centrifuge the titanium dioxide precursor prepared in step (1), then mix and grind the isolated solid product with 0.2% of its mass fraction of sodium stearate, then add 10mL of formaldehyde, and Ultrasonic dispersion for 1 hour, and during this process, triethanolamine was added to adjust the pH to 9 to maintain a stable polymerization reaction, and then the product ...

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Abstract

The invention discloses a preparation method of high-dispersity nano titanium dioxide / melamine resin for plastic products. According to the preparation method, glycerol-polyethylene glycol-isopropanol / hydrochloric acid liquid is taken as hydrolysis dispersion liquid of titanium tetrachloride; in the synthesis process of titanium dioxide, in-situ compounding of titanium dioxide and a melamine hydroxymethyl compound is realized through the polymerization reaction of melamine and formaldehyde; and the product is subsequently subjected to inorganic-organic coating treatment, so that the dispersity of the material is further improved, and finally, the high-dispersity titanium dioxide / melamine resin is obtained and has good performance when applied to plastic.

Description

technical field [0001] The invention relates to the technical field of preparation of titanium dioxide and plastic additives, in particular to a method for preparing a high-dispersion nanometer titanium dioxide / melamine resin used for plastic products. Background technique [0002] Titanium dioxide is a material with a wide range of application prospects, it has the best opacity, whiteness, chemical stability and UV shielding characteristics. In recent decades, titanium dioxide has developed rapidly and is widely used in various fields. Among them, the most prominent is the development of titanium dioxide in the field of plastics. Titanium dioxide is generally used in plastic steel windows for buildings, plastic auto parts, plastic communication equipment, home appliances and daily necessities and other plastic products. This has become the second largest application of titanium dioxide. field. In recent years, titanium dioxide-modified resins have been widely used, and na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K9/10C08K3/22C08L61/28C08L23/12C08L23/06C08L75/04
CPCC08K9/04C08K9/10C08K3/22C08L61/28C08L23/12C08K2201/011C08K2003/2241C08L23/06C08L75/04Y02P20/10
Inventor 吴通顺
Owner 杭州臻朗光电科技有限公司
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