阅读说明：本技术 一种家用电器专用粉末涂料及其制备方法 (Special powder coating for household appliances and preparation method thereof ) 是由 李薇薇 毕宏海 储江顺 李楠 孙晓光 黄健 杨少辉 于 2020-12-25 设计创作，主要内容包括：本发明公开了一种家用电器专用粉末涂料及其制备方法,所述粉末涂料包括以下重量份数的组分：环氧树脂25-35份、聚酯树脂25-35份、固化剂3-5份、助剂5-10份、颜料3-8份、填料15-40份、抗氧剂0.1-0.5份。上述家用电器专用粉末涂料的制备方法,包括如下步骤：按上述比例将所述环氧树脂、聚酯树脂、固化剂、助剂、颜料、填料和抗氧剂加入混料机中,混合均匀；将混合后的物料加入双螺杆挤出机中,进行挤出；将挤出后的粉末涂料放入磨粉机中,进行研磨,制得家用电器专用粉末涂料。本发明的家用电器专用粉末涂料具有高流平性能、优异的耐温性能、优异的粘结性能、优异的耐候性能、优异的耐水煮性能、安全无毒等特点。(The invention discloses a special powder coating for household appliances and a preparation method thereof, wherein the powder coating comprises the following components in parts by weight: 25-35 parts of epoxy resin, 25-35 parts of polyester resin, 3-5 parts of curing agent, 5-10 parts of auxiliary agent, 3-8 parts of pigment, 15-40 parts of filler and 0.1-0.5 part of antioxidant. The preparation method of the special powder coating for the household appliance comprises the following steps: adding the epoxy resin, the polyester resin, the curing agent, the auxiliary agent, the pigment, the filler and the antioxidant into a mixer according to the proportion, and uniformly mixing; adding the mixed materials into a double-screw extruder for extrusion; and (3) putting the extruded powder coating into a pulverizer, and grinding to obtain the powder coating special for the household appliances. The powder coating special for the household appliances has the characteristics of high leveling property, excellent temperature resistance, excellent bonding property, excellent weather resistance, excellent boiling resistance, safety, no toxicity and the like.)

1. The powder coating special for the household appliances is characterized by comprising the following components in parts by weight: 25-35 parts of epoxy resin, 25-35 parts of polyester resin, 3-5 parts of curing agent, 5-10 parts of other auxiliary agents, 3-8 parts of pigment, 15-40 parts of filler and 0.1-0.5 part of antioxidant.

2. The powder coating special for household appliances according to claim 1, wherein the epoxy resin is one or more selected from YD013K, KD213 and LD 293.

3. The powder paint special for home appliances according to claim 1, wherein the polyester resin is one or more selected from SJ3A, SJ3AT, SJ5A and SJ 6B.

4. The powder coating special for household appliances according to claim 1, wherein the curing agent is selected from one or more of XG603-1A, XG633, M98 and SA 186.

5. The powder coating special for the household appliances as claimed in claim 1, wherein the other auxiliary agents are prepared by mixing a leveling agent, a brightening agent, benzoin, a bulking agent, a boiling resistant agent, a curing accelerator and a light stabilizer in a mass ratio of 2:2:1:1:1:2: 1.

6. The powder coating special for the household appliances according to claim 1, wherein the pigment is one or more selected from titanium dioxide, permanent yellow, permanent red and carbon black; the filler is selected from ultra-fine precipitated BaSO₄、CaCO₃One or more of kaolin and mica powder.

7. The powder coating special for the household appliances as claimed in claim 1, wherein the antioxidant is prepared by mixing AT626-1010 antioxidant and PKY168 antioxidant in a mass ratio of 1: 1.

8. The method for preparing a powder coating material specially used for home appliances according to any one of claims 1 to 7, characterized by comprising the steps of:

adding the epoxy resin, the polyester resin, the curing agent, the auxiliary agent, the pigment, the filler and the antioxidant into a mixer according to the proportion, and uniformly mixing; adding the mixed materials into a double-screw extruder for extrusion; and (3) putting the extruded powder coating into a pulverizer, and grinding to obtain the powder coating special for the household appliances.

9. The method for preparing powder coating for household appliances as claimed in claim 8, wherein the extrusion temperature of the twin-screw extruder is 90-110 ℃, the host rotation speed is 390-410rpm, and the feeding rotation speed is 21-28 rpm.

10. The method for preparing powder coating material specially used for household appliances according to claim 8, wherein the main milling frequency of the mill is 50HZ, the auxiliary milling frequency is 30HZ, and a 180-mesh filter screen is adopted.

Technical Field

The invention relates to the field of coatings, in particular to a powder coating special for household appliances and a preparation method thereof.

Background

Along with the improvement of the living standard of people, more and more electric appliance products are used in life, and the requirements of people on the coating used by household appliances are higher and higher. The traditional paint contains solvent, can volatilize harmful substances, and has great harm to human health and environment. Therefore, the powder coating has great advantages in this respect, no solvent pollution, high coating efficiency, good physical properties of the coating and good resistance to chemical media, and is particularly suitable for refrigerator housings, washing machine housings, air conditioner housings, smoke exhaust ventilator housings, and the like.

However, the powder coating for the household appliances in the prior art has the following disadvantages: poor leveling property, poor decorative property, poor temperature resistance, poor boiling resistance and the like.

Therefore, the invention provides a special powder coating for household appliances, which solves the problems of the existing powder coating.

Disclosure of Invention

The invention aims to provide the special powder coating for the household appliances and the preparation method thereof aiming at the defects in the prior art, and the special powder coating for the household appliances has the characteristics of high leveling property, excellent temperature resistance, excellent bonding property, excellent weather resistance, excellent boiling resistance, safety, no toxicity and the like.

In order to achieve the purpose, the invention adopts the technical scheme that:

the invention provides a powder coating special for household appliances, which comprises the following components in parts by weight: 25-35 parts of epoxy resin, 25-35 parts of polyester resin, 3-5 parts of curing agent, 5-10 parts of auxiliary agent, 3-8 parts of pigment, 15-40 parts of filler and 0.1-0.5 part of antioxidant.

Preferably, the epoxy resin is selected from one or more of YD013K, KD213 and LD 293.

Preferably, the polyester resin is selected from one or more of SJ3A, SJ3AT, SJ5A and SJ 6B.

Preferably, the curing agent is selected from one or more of XG603-1A, XG633, M98 and SA 186.

Preferably, the other auxiliary agents are prepared by mixing a leveling agent, a brightening agent, benzoin, a bulking agent, a boiling resistant agent, a curing accelerator and a light stabilizer according to the mass ratio of 2:2:1:1:1:2: 1.

Preferably, the pigment is selected from one or more of titanium dioxide, permanent yellow, permanent red and carbon black; the filler is selected from ultra-fine precipitated BaSO₄、CaCO₃One or more of kaolin and mica powder.

Preferably, the antioxidant is prepared by mixing AT626-1010 antioxidant and PKY168 antioxidant according to the mass ratio of 1: 1.

The second aspect of the present invention provides a preparation method of the powder coating material for household appliances, comprising the following steps:

adding the epoxy resin, the polyester resin, the curing agent, the auxiliary agent, the pigment, the filler and the antioxidant into a mixer according to the proportion, and uniformly mixing; adding the mixed materials into a double-screw extruder for extrusion; and (3) putting the extruded powder coating into a pulverizer, and grinding to obtain the powder coating special for the household appliances.

Preferably, the extrusion temperature of the double-screw extruder is 90-110 ℃, the rotating speed of the host is 390-410rpm, and the feeding rotating speed is 21-28 rpm.

Preferably, the main grinding frequency of the pulverizer is 50Hz, the auxiliary grinding frequency is 30Hz, and a 180-mesh filter screen is adopted.

By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:

the powder coating special for the household appliances has the characteristics of high leveling property, excellent temperature resistance, excellent bonding property, excellent weather resistance, excellent boiling resistance, safety, no toxicity and the like.

Detailed Description

The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

Example 1

The embodiment provides a powder coating special for household appliances, which comprises the following components in parts by weight: YD013K 25 parts, SJ3A25 parts, XG603-1A 3 parts, auxiliary agent 5 parts, titanium dioxide 3 parts, mica powder 15 parts, AT626-1010 antioxidant and PKY168 antioxidant in a mass ratio of 1:1 are mixed to form 0.1 part of antioxidant; wherein the other auxiliary agents are formed by mixing a flatting agent, a brightening agent, benzoin, a bulking agent, a boiling resistant agent, a curing accelerator and a light stabilizer according to the mass ratio of 2:2:1:1:1:2: 1.

The preparation method of the special powder coating for the household appliance comprises the following steps:

adding the epoxy resin, the polyester resin, the curing agent, the auxiliary agent, the pigment, the filler and the antioxidant into a mixer according to the proportion, and uniformly mixing; adding the mixed materials into a double-screw extruder for extrusion, wherein the extrusion temperature of the double-screw extruder is 90 ℃, the rotating speed of a host is 390rpm, and the feeding rotating speed is 21 rpm; and (3) putting the extruded powder coating into a flour mill, and grinding, wherein the main grinding frequency of the flour mill is 50HZ, the auxiliary grinding frequency is 30HZ, and a 180-mesh filter screen is adopted, so that the special powder coating for the household appliance is prepared.

Example 2

The embodiment provides a powder coating special for household appliances, which comprises the following components in parts by weight: KD21330 parts, SJ3AT 30 parts, XG6334 parts, auxiliary agent 8 parts, permanent yellow 6 parts, kaolin 25 parts, and antioxidant 0.3 part formed by mixing AT626-1010 antioxidant and PKY168 antioxidant according to the mass ratio of 1: 1; wherein the other auxiliary agents are formed by mixing a flatting agent, a brightening agent, benzoin, a bulking agent, a boiling resistant agent, a curing accelerator and a light stabilizer according to the mass ratio of 2:2:1:1:1:2: 1.

The preparation method of the special powder coating for the household appliance comprises the following steps:

adding the epoxy resin, the polyester resin, the curing agent, the auxiliary agent, the pigment, the filler and the antioxidant into a mixer according to the proportion, and uniformly mixing; adding the mixed materials into a double-screw extruder for extrusion, wherein the extrusion temperature of the double-screw extruder is 100 ℃, the rotating speed of a main machine is 400rpm, and the feeding rotating speed is 25 rpm; and (3) putting the extruded powder coating into a flour mill, and grinding, wherein the main grinding frequency of the flour mill is 50HZ, the auxiliary grinding frequency is 30HZ, and a 180-mesh filter screen is adopted, so that the special powder coating for the household appliance is prepared.

Example 3

The embodiment provides a powder coating special for household appliances, which comprises the following components in parts by weight: LD29335 parts, SJ6B 35 parts, SA1865 parts, assistant 10 parts, carbon black 8 parts, CaCO 1865 parts₃40 parts of antioxidant, 0.5 part of antioxidant which is formed by mixing AT626-1010 antioxidant and PKY168 antioxidant according to the mass ratio of 1: 1; wherein the other auxiliary agents are formed by mixing a flatting agent, a brightening agent, benzoin, a bulking agent, a boiling resistant agent, a curing accelerator and a light stabilizer according to the mass ratio of 2:2:1:1:1:2: 1.

The preparation method of the special powder coating for the household appliance comprises the following steps:

adding the epoxy resin, the polyester resin, the curing agent, the auxiliary agent, the pigment, the filler and the antioxidant into a mixer according to the proportion, and uniformly mixing; adding the mixed materials into a double-screw extruder for extrusion, wherein the extrusion temperature of the double-screw extruder is 110 ℃, the rotating speed of a main machine is 410rpm, and the feeding rotating speed is 28 rpm; and (3) putting the extruded powder coating into a flour mill, and grinding, wherein the main grinding frequency of the flour mill is 50HZ, the auxiliary grinding frequency is 30HZ, and a 180-mesh filter screen is adopted, so that the special powder coating for the household appliance is prepared.

Application example

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.