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Moisture-proof agent for storage of powder coating for film forming by electrostatic spraying

An electrostatic spraying and powder coating technology, applied in powder coatings, epoxy resin coatings, coatings, etc., to achieve the effects of weakening moisture absorption, enhancing moisture resistance, and excellent moisture resistance

Inactive Publication Date: 2017-11-10
ANHUI ZHIBO NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a film-forming powder coated by electrostatic spraying that can effectively solve the problem of moisture absorption of the powder coating when the mass addition reaches 3-5%, and will not affect the original performance of the powder coating. Moistureproof agent for paint storage

Method used

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  • Moisture-proof agent for storage of powder coating for film forming by electrostatic spraying
  • Moisture-proof agent for storage of powder coating for film forming by electrostatic spraying
  • Moisture-proof agent for storage of powder coating for film forming by electrostatic spraying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Heat 10g of hydrophobic micro-silica airgel to 80-85°C and mix for 10 minutes, then add 0.5g of carnauba wax, continue to mix at 80-85°C until the carnauba wax is completely melted, and keep In molten state for 5 minutes, then add 5g of N-methylolacrylamide and 60g of absolute ethanol, keep stirring under reflux for 2 hours, and send the resulting mixture into a spray dryer, and dry the obtained particles to make nanoparticles through a nano-grinding machine. Nano rubber powder;

[0024] (2) Heat 3g of chlorinated polyvinyl chloride to 125-130°C and mix for 5 minutes, then add 3g of superfine magnesium oxide and 0.5g of polytetrafluoroethylene ultrafine powder, continue to mix at 125-130°C for 10 minutes, and Naturally cool to room temperature under grinding to obtain the additive;

[0025] (3) Add 10 g of glyceryl monostearate-polyglutamic acid-lauryl alcohol and additives to the nano rubber powder, mix well and then microwave for 10 min at a microwave frequency o...

Embodiment 2

[0028] (1) Heat 15g of hydrophobic micro-silica airgel to 80-85°C and mix for 15 minutes, then add 0.5g of carnauba wax, continue to mix at 80-85°C until the carnauba wax is completely melted, and keep Melt state for 5 minutes, then add 10g of N-methylolacrylamide and 80g of absolute ethanol, keep stirring under reflux for 3 hours, the resulting mixture is sent to a spray dryer, and the obtained particles are dried to form nanoparticles through a nano-grinding machine, that is, Nano rubber powder;

[0029] (2) Heat 5g of chlorinated polyvinyl chloride to 125-130°C and mix for 10 minutes, then add 2g of ultra-fine magnesium oxide and 1g of PTFE ultra-fine powder, continue to mix at 125-130°C for 15 minutes, and grind Naturally cool to room temperature to obtain the auxiliary agent;

[0030] (3) Add 5g of glyceryl monostearate-polyglutamic acid-lauryl alcohol and additives to the nano rubber powder, mix well and then microwave for 10min at a microwave frequency of 2450MHz and a...

Embodiment 3

[0046] The moisture-proofing agent prepared in Example 1, Example 2, Comparative Example 1, Comparative Example 2, and Comparative Example 3 was added to the powder coating according to Table 1, and the powder coating without adding moisture-proofing agent was used as Comparative Example 4, and the moisture-proofing agent was added to the powder coating according to Table 1. The moisture absorption performance of the prepared powder coatings was tested, and the results are shown in Table 2.

[0047] Table 1 powder coating ingredient list

[0048]

[0049]

[0050] The hygroscopicity (weight gain percentage) of the prepared powder coating of table 2

[0051]

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Abstract

The invention discloses a moisture-proof agent for storage of a powder coating for film forming by electrostatic spraying, and relates to the technical field of powder coatings. The moisture-proof agent is prepared from the raw materials in parts by weight as follows: 10-15 parts of hydrophobic fine silica aerogel, 5-10 parts of glycerol monostearate-polyglutamic acid-dodecanol, 5-10 parts of N-(hydroxymethyl)acrylamide, 1-5 parts of chlorinated polyvinyl chloride, 1-5 parts of ultrafine magnesium oxide, 0.5-2 parts of polytetrafluoroethylene ultrafine powder, 0.5-2 parts of carnauba wax and 50-100 parts of absolute ethanol. After 3%-5% by mass of the moisture-proof agent is added to the powder coating, excellent moisture-proof performance can be developed, the resistivity and dielectric constant of the powder coating are prevented from being affected by agglomeration due to moisture absorption during storage and use, and accordingly, smooth implementation of electrostatic spraying of the powder coating and quality of a formed film are ensured.

Description

Technical field: [0001] The invention relates to the technical field of powder coatings, in particular to a moisture-proofing agent for powder coating storage which is applied by electrostatic spraying to form a film. Background technique: [0002] Powder coating refers to a new type of solvent-free 100% solid powder coating, which has the characteristics of solvent-free, pollution-free, recyclable, environmental protection, energy and resource saving, labor intensity reduction and high mechanical strength of the coating film. The meaning of powder coating is not only that the product of powder coating is in powder state, but also used in powder state in the coating process. Only when it is baked into a film does it have a process of melting and forming a liquid state. [0003] Electrostatic spraying is one of the main coating methods of powder coatings. The powder coating is sprayed onto the surface of the substrate through an electrostatic spray gun to form a coating film ...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09D5/03C09D163/00C09D123/06
CPCC08K2003/222C08K2003/265C08L2205/02C08L2205/035C09D5/033C09D163/00C08L63/04C08L33/24C08L91/06C08L77/04C08L23/286C08L27/18C08L23/06C08K13/02C08K3/36C08K3/26C08K3/22
Inventor 汪六一宋从发
Owner ANHUI ZHIBO NEW MATERIAL TECH CO LTD
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