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A kind of powder coating for inflation type evaporator and preparation method thereof

A powder coating and evaporator technology, applied in powder coatings, polyester coatings, coatings, etc., to achieve good impact resistance, good bending performance, and meet technical requirements.

Active Publication Date: 2020-06-05
ANHUI MEIJIA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inflatable evaporators require powder coatings to still have good impact resistance and bending properties after low-temperature freezing. The powder coatings currently on the market cannot meet the above requirements.

Method used

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  • A kind of powder coating for inflation type evaporator and preparation method thereof
  • A kind of powder coating for inflation type evaporator and preparation method thereof

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Embodiment Construction

[0029] The technical solutions in the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0030] A kind of powder coating for blowing type evaporator

[0031] In parts by mass, it includes the following components: 50-70 parts of polyester resin; 3-7 parts of curing agent; 10-20 parts of filler; 10-25 parts of titanium dioxide; 0.5-1.5 parts of leveling agent; ~1.5 parts; benzoin 0.1~1 part; elastic powder 0.5~1.5 parts; curing accelerator 0.5~1.5 parts; pigment 0~5 parts.

[0032] As shown in the table below, each component of the formula of the preferred embodiment is in parts by mass.

[0033]

[0034] Wherein, the polyester resin is carboxyl-terminated polyester resin; the curing agent is triglycidyl isocyanurate; the ...

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Abstract

The invention discloses a powder coating for a roll-bond evaporator. The powder coating comprises polyester resin, a curing agent, a filler, titanium dioxide, a leveling agent, a gloss enhancer, benzoin, elastic powder, a curing accelerator and a pigment. The preparation method of the powder coating comprises the following steps: S1, weighing components in parts by mass, pre-mixing for 6-9 min, and stirring by using a high-speed mixer; S2, adding uniformly mixed raw materials in the step S1 into an extruder, performing melting extrusion, and sheeting, wherein the temperature of a zone I of the extruder is 90-100 DEG C, and the temperature of a zone II of the extruder is 95-105 DEG C; S3, adding sheet materials in step S2 into a grinding machine, and grinding to obtain the powdery finished product, wherein the rotating speed of a main grinding unit is 45-50 Hz, the rotating speed of a subsidiary grinding unit is 20-35 Hz, and the screen is 180-200-mesh; S4, adding the powdery finished product obtained in the step S3 into an electrostatic spraying gun, and spraying a base material of the roll-bond evaporator. The powder coating still has very good impact resistance and bending performance after being frozen at low temperature.

Description

technical field [0001] The invention belongs to the technical field of powder coatings, and in particular relates to a powder coating for an inflation evaporator and a preparation method thereof. Background technique [0002] Powder coatings are widely used in the home appliance kitchen and bathroom industry because of their advantages such as environmental friendliness, pollution-free, and simple process. Among them, the evaporator is a very important part of the four major components of refrigeration. The low-temperature condensed "liquid" body passes through the evaporator to exchange heat with the outside air, and the "gas" absorbs heat to achieve the effect of refrigeration. Inflatable evaporators require powder coatings to still have good impact resistance and bending properties after low-temperature freezing. The powder coatings currently on the market cannot meet the above requirements. Contents of the invention [0003] Aiming at the deficiencies in the prior art...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D5/03C09D7/61C09D7/65C09D7/63
CPCC08L2205/025C08L2205/03C09D5/033C09D167/00C08L67/00C08L75/04C08K13/02C08K2003/3045
Inventor 王方银王峰张雪梅
Owner ANHUI MEIJIA NEW MATERIAL