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Thin spray powder coating and preparation method thereof

A technology of powder coating and thin spraying, which is applied in the direction of powder coating, polyester coating, epoxy resin coating, etc. It can solve the problems of affecting product quality, appearance and product function, increasing the labor intensity of staff, and decreasing the leveling degree of exposed bottom, etc. problem, to achieve the effects of shortening the baking time, strong charged particles, and reducing energy consumption

Active Publication Date: 2017-03-08
BAZHOU JINCHANG ENVIRONMENTAL PROTECTION MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the existing powder coatings, in order to ensure the spraying effect, the general standard thickness is between 60-80um (microns). Below this thickness, the leveling will decrease, and uneven lines will be formed on the surface; and the limit line coating is at a very low level. Speed, if the coating is too fast, there will be problems such as uneven coating and leveling of the exposed bottom, which will seriously affect the quality, appearance and product function of the product; if the coating is too slow, the amount of paint will be large, and the coating efficiency will be seriously restricted Labor intensity of large staff

Method used

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  • Thin spray powder coating and preparation method thereof
  • Thin spray powder coating and preparation method thereof
  • Thin spray powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Add the required raw materials for synthesizing 150kg epoxy resin in the reactor, add 0.1kg leveling agent in the reaction process, obtain the modified resin raw material; Mix the modified resin raw material with 24kg triglycidyl isocyanurate, 25kg iron yellow , 0.8kg calcium sulfate, 0.05kg brightening agent and 0.05kg benzoin are mixed and then added to the twin-screw extruder, such as Figure 1-3 As shown, the two screws of the twin-screw extruder are divided into feeding section 1, homogenizing section 2 and mixing section 3 along the material direction, and the screw in feeding section 1 is provided with threads, and the thread lead angle of the threads is 45 degrees; The screw rod of the uniform material section 2 is provided with a first screw monolith 4, the first screw monolith 4 is composed of two symmetrical teeth 40, the respective two teeth of the adjacent two first screw monoliths 4 are connected The angle between the lines is 45 degrees, and a plurality o...

Embodiment 2

[0060] Add the raw materials required for synthesizing 50kg phenolic resin in the reactor, add 2kg leveling agent in the reaction process to obtain the modified phenolic resin raw material; add the required raw materials for synthesizing 50kg propylene resin in another reactor, add in the reaction process 2kg leveling agent to obtain modified acrylic resin raw material; 34kg toluene diisocyanate, 2kg aluminum powder, 40kg talcum powder, 2kg brightening agent, 2kg benzoin, 2kg toughening agent, 2kg electrostatic agent, 2kg texture agent, 2kg alumina C , 2kg of defoamer and 2kg of cross-linking agent are mixed and added to the twin-screw extruder. The two screws of the twin-screw extruder are divided into a feeding section, a homogenizing section and a mixing section along the material direction. The screw in the feeding section Threads are provided, and the lead angle of the threads is 45 degrees; the screw of the uniform material section is provided with a first screw single pi...

Embodiment 3

[0063] Add the raw materials required for synthesizing 30kg of silicone resin in the reaction kettle, add 1kg of leveling agent in the reaction process to obtain the modified silicone resin raw material; add the required raw materials for synthesizing 30kg of polyurethane in another reaction kettle, during the reaction process Add 1kg leveling agent to obtain the modified polyurethane raw material; add the required raw materials for synthesizing 30kg fluorocarbon resin in the third reaction kettle, add 1kg leveling agent in the reaction process to obtain the modified fluorocarbon resin raw material; Glycidyl acrylate, 25kg dicyandiamide, 20kg bronze powder (pearlescent pigment), 15kg bentonite, 15kg barium sulfate, 1kg brightening agent, 1kg benzoin, 1kg hardening agent, 1kg matting agent, 1kg smooth degassing agent, 1kg Plasticizer and 1kg of micropowder wax additives are mixed and added to the twin-screw extruder. The two screws of the twin-screw extruder are divided into a f...

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Abstract

The invention discloses a thin spray powder coating and a preparation method thereof. The thin spray powder coating is mainly prepared from the following raw materials by weight percent: 50-75% of resin, 3-25% of curing agent, 1-12.5% of pigment, 0.3-20% of filler and 0.1-10% of addition agent; the curing agent comprises one or more of an epoxy curing agent, a polyisocyanates curing agent, a polyamine curing agent and a phenols curing agent; the addition agent comprises a flatting agent, a sensitizer and benzoin. The method for preparing the thin spray powder coating comprises the following steps: adding the flatting agent in the resin production process to obtain a modified resin raw material; mixing the modified resin raw material, the curing agent, the pigment, the filler and the other addition agent, and squeezing in a double-screw extruder to obtain the extrudate; and tabletting, cooling, milling and sieving the extrudate to obtain the powder coating. By adopting the thin spray powder coating and the preparation method thereof, the spraying thickness is small, the energy consumption is reduced and the cost is reduced.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a thin-spray powder coating and a preparation method thereof. Background technique [0002] Powder coating is a completely different form from general coatings, and it exists in the state of fine powder. Because no solvent is used, it is called powder coating. The main features of powder coatings are: harmless, high efficiency, resource saving and environmental protection. It has two categories: thermoplastic powder coating and thermosetting powder coating. [0003] For the existing powder coatings, in order to ensure the spraying effect, the general standard thickness is between 60-80um (microns). Below this thickness, the leveling will decrease, and uneven lines will be formed on the surface; and the limit line coating is at a very low level. Speed, if the coating is too fast, there will be problems such as uneven coating and leveling of the exposed bottom, which will seriously affec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/06C09D163/00C09D161/06C09D123/12C09D161/28C09D183/04C09D175/04C09D127/12C09D5/03B29C47/62
Inventor 郝同乐
Owner BAZHOU JINCHANG ENVIRONMENTAL PROTECTION MATERIALS CO LTD
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