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Polyester powder coating for solar water heater

A technology of solar water heaters and polyester powders, applied in polyester coatings, powder coatings, coatings, etc., can solve problems such as difficulties, single-layer powder coatings with single weather resistance requirements, and weather resistance that cannot meet the requirements of super weather resistance, etc. Achieve the effects of reducing the number of coatings, shortening the coating time, improving weather resistance and anti-rust performance

Inactive Publication Date: 2010-10-06
JIANGSU LANLING POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because some components of solar water heaters are placed outdoors for a long time, they generally need to be coated with weather-resistant powder coatings, which should also have good anti-rust performance. However, the powder coatings currently used cannot meet the requirements of super-weather resistance in terms of weather resistance. , in terms of anti-rust performance, it can not meet the long-term requirements. The main reason is that single-layer powder coatings can easily meet single weather resistance requirements or anti-rust requirements, but general powder coatings can not only meet the requirements of super weather resistance, but also meet the Long-term anti-rust performance requirements are more difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 61 parts of super weather-resistant carboxyl-terminated polyester resin, 4.6 parts of triglycidyl isocyanurate, 15 parts of chlorinated titanium dioxide, 7 parts of anti-rust and other pigments, 8 parts of filler, 1.0 parts of nano additives, antioxidant 0.5 parts, 0, 5 parts of ultraviolet light absorber, 2.4 parts of other additives, mix the weighed materials with a high-speed mixer; then use a single-screw or twin-screw extruder for melt extrusion mixing, and control extrusion The temperature of the homogenizing section of the machine is 115-120°C; the extruded product is cooled to room temperature by cooling rolls and cooling belts, and crushed; the crushed paint flakes are crushed and classified by an air classifying mill, and then passed through a 160-mesh Sieve through a sieve to obtain polyester powder coatings for solar water heaters. After 60 kV high-voltage electrostatic powder coating and bake at 200°C for 10 minutes, the mechanical properties of the coating ...

Embodiment 2

[0017] 69 parts of super weather-resistant carboxyl-terminated polyester resin, 5.2 parts of triglycidyl isocyanurate, 6 parts of chlorinated titanium dioxide, 5 parts of anti-rust and other pigments, 9 parts of filler, 1.8 parts of nano additives, and other additives 4.0 parts, mix the weighed materials with a high-speed mixer; then use a single-screw or twin-screw extruder for melt extrusion and mixing, and control the temperature of the homogenization section of the extruder at 115-120°C; extrude The material is cooled to room temperature by cooling rollers and cooling belts, and crushed; the crushed paint flakes are crushed and classified with an air classifying mill, and then sieved through a 160-mesh screen to obtain polyester powder coatings for solar water heaters. After 60 The appearance, gloss, impact strength, flexibility, cupping test and other mechanical properties of the coating film obtained by kV high-voltage electrostatic powder coating and baking at 200°C for ...

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PUM

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Abstract

The invention relates to the new material field of chemical engineering technique, in particular to a powder coating with integrated bottom and surface, i.e. a polyester powder coating for a solar water heater. The polyester powder coating is a thermosetting powder coating which is characterized by comprising the following components in percentage by weight: 61-74% of super-weather resistant terminal carboxyl polyester resin, 4.6-6% of curing agent, 15-30% of mixture of pigment and padding and 3-6% of assistant, wherein the super-weather resistant terminal carboxyl polyester resin is obtained by condensation polymerization of polyatomic alcohol and polyatomic acid or polyatomic anhydride under the condition of existence of excess acid, and the acid value range of the super-weather resistant terminal carboxyl polyester resin is 28-40mgKOH / g. The invention can solve the problem that the general powder coating can not simultaneously meet the requirements of super-weather resistance and rust protection.

Description

technical field [0001] The invention relates to the field of new chemical technology materials, in particular to a powder coating with integrated bottom and surface. Background technique [0002] With the rapid development of the world's industry, the amount of energy such as oil and coal is increasing. These energy sources cannot be regenerated, and the waste gas emitted causes serious pollution to the environment. Therefore, countries all over the world are actively developing environmentally friendly and renewable energy Utilization of energy sources such as solar and wind energy. my country also attaches great importance to the comprehensive utilization of solar energy, including the development of technologies such as solar power generation and solar water heaters. Especially the equipment of solar water heater is relatively simple, and the expense of equipment is also not too expensive, and common common people's family can accept and install and use. Especially in a...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D167/02C09D7/12C09D5/03
Inventor 南仁植高新田程军周立华金顺玉潘锎
Owner JIANGSU LANLING POLYMER MATERIAL CO LTD
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