Method for preparing pitchy pigment capable of reflecting infrared rays and heat insulating paint

A black-brown, infrared technology, applied in the direction of reflection/signal coating, pigment slurry, polyester coating, etc., can solve the problems of high cost, insufficient infrared reflection performance, complicated preparation process, etc., and achieve the effect of less investment in equipment

Inactive Publication Date: 2012-07-25
SHAANXI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a small amount of infrared reflective pigments have been developed. For example, U.S. patents US20090223414, US6221147, US6416868, and US6541112 have reported pigments containing transition metal elements or rare earth elements, but these pigments are more expensive, or their preparation process is more complicated. Or its infrared reflection performance is not good enough and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh the base material according to the following mass percentage: Fe 2 o 3 , 45%; CrO 3 , 25%; CoO, 13%; Al 2 o 3 , 17%. Weigh the reaction control agent according to the following mass ratio: MgO: MoO 3 :TiO 2 =20:1:1. Weigh 100 parts of matrix raw materials and 5 parts of reaction control agent in parts by weight, put them into a ball mill and dry mix and grind them evenly; calcinate the ground mixture at 1000°C for 6 hours, and put it into a ball mill after it cools down. It is ground into powder by dry method to obtain a dark brown pigment sample.

Embodiment 2

[0016] Weigh the base material according to the following mass percentage: Fe 2 o 3 , 40%; CrO 3 , 30%; CoO, 10%; Al 2 o 3 , 20%. Weigh the reaction control agent according to the following mass ratio: MgO: MoO 3 :TiO 2 =20:1:1. Weigh 100 parts of matrix raw materials and 5 parts of reaction control agent in parts by weight, put them into a ball mill and dry mix and grind them evenly; calcinate the ground mixture at 1000°C for 6 hours, and put it into a ball mill after it cools down. It is ground into powder by dry method to obtain a dark brown pigment sample.

Embodiment 3

[0018] Weigh the base material according to the following mass percentage: Fe 2 o 3 , 50%; CrO 3 , 20%; CoO, 15%; Al 2 o 3 , 15%. Weigh the reaction control agent according to the following mass ratio: MgO: MoO 3 :TiO 2 =20:1:1. Weigh 100 parts of matrix raw materials and 5 parts of reaction control agent in parts by weight, put them into a ball mill and dry mix and grind them evenly; calcinate the ground mixture at 1000°C for 8 hours, and after it cools down, put it into a ball mill to It is ground into powder by dry method to obtain a dark brown pigment sample.

[0019] The performance detection method and detection result of above-mentioned embodiment pigment sample are as follows:

[0020] The prepared above-mentioned pigment sample and common alkyd varnish are mixed evenly in a ratio of 1:9 by weight, and the obtained paint sample is rolled on the steel plate sample, and the steel plate sample is tested by the American Society for Testing and Materials ASTMD4803-8...

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PUM

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Abstract

The invention discloses a method for preparing a pitchy pigment capable of reflecting infrared rays and heat insulating paint. The method comprises the following steps of: weighing Fe2O3,Cr2O3, CoO, AL2O3 and a reaction control agent according to a certain mass percentage and putting the materials into a ball mill for mixing and grinding uniformly; and calcining the ground mixture at the temperature of 1,000 DEG C for 6-8 hours, cooling the mixture, and putting the cooled mixture into the ball mill for grinding into powder. The pitchy pigment prepared with the method has high infrared ray reflecting performance, can be added into the paint to prepare a heat insulating coating product; moreover, equipment for producing the pitchy pigment capable of reflecting infrared rays provided by the invention mainly comprises the ball mill and a burning electric furnace, so that the method has small equipment investment and a simple preparation process, is easy to operate, and is suitable for mass industrial production.

Description

technical field [0001] The invention relates to a method for preparing a pigment, which is used for a heat-shielding paint with heat-insulating properties, in particular to a method for preparing a black-brown pigment capable of reflecting infrared rays and the heat-insulating paint. Background technique [0002] Buildings, cars, storage tanks, ships, etc. used outdoors tend to increase their internal temperature due to prolonged exposure to the sun. Especially in summer, too high indoor temperature will make people feel uncomfortable, and it is also not conducive to the preservation and transportation of items. By making the appearance of buildings and automobiles white to light-colored, using the white to light-colored pigments in the coating as the main reflector to reflect the heat of sunlight, it has a certain degree of heat insulation effect. [0003] However, the exteriors of buildings, automobiles, storage tanks, ships, etc. are often dark in order to make dirt less...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D17/00C09D5/33C09D167/08C09C3/04
Inventor 杨晓明张营堂冯小明袁新强付蕾张义明
Owner SHAANXI UNIV OF TECH
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