Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation process of corrosion-resistant powder coating

A technology for powder coating and preparation process, applied in powder coatings, anti-corrosion coatings, polyester coatings, etc., can solve the problems of high cost, high price, increased cost, etc., and achieve the effect of good corrosion resistance, stable performance and non-flammability

Inactive Publication Date: 2021-04-09
HUNAN LIANXIN SCI & TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing preparation methods of corrosion-resistant environmental protection coatings mostly use nano-materials mixed with corrosion-resistant resins, but nano-materials are not easy to disperse in resins, and nano-materials often aggregate into clusters during the manufacturing process, which affects the film-forming of the prepared powder coatings The final corrosion resistance effect, in order to prevent the agglomeration of nano materials, it is necessary to use special dispersion equipment to process raw materials in the coating preparation process, but the price of special dispersion equipment is high, which greatly increases the cost of coating preparation, and the price of nano materials is high ,higher cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: a preparation process of corrosion-resistant powder coatings, comprising the following steps: 1) Weigh 20 parts of rosin-modified unsaturated polyester resin, 20 parts of epoxy resin, 10 parts of curing agent, 1 part of antioxidant, mica 6 parts of powder, 1.2 parts of additives; the average particle size of the base powder is 30-45 μm, the mixing is carried out in a high-speed mixer, and the mixing time is 5-10 minutes; 2) Add rosin-modified unsaturated polyester resin, epoxy resin, curing agent, antioxidant, and mica powder into a mixer and mix evenly, extrude, tablet, and pulverize at 95-125°C to obtain a base powder; Agents in parts by mass: 5 parts of hardening wax, 1 part of degassing agent, 0.1 part of leveling agent, 0.1 part of low-temperature accelerator, 0.2 parts of crosslinking agent, 5 parts of pigment; degassing agent is benzoin; leveling agent is Isophorone; the low-temperature accelerator is 2-methylimidazole; the crosslinking agent is imi...

Embodiment 2

[0018] Embodiment 2: a preparation process of corrosion-resistant powder coatings, comprising the following steps: 1) Weigh 30 parts of rosin-modified unsaturated polyester resin, 25 parts of epoxy resin, 6 parts of curing agent, 0.5 part of antioxidant, mica 6 parts of powder and 1.7 parts of additives; in the step 1), the average particle size of the base powder is 30-45 μm, and the mixing is carried out in a high-speed mixer, and the mixing time is 5-10 minutes; 2) the modified rosin is not Saturated polyester resin, epoxy resin, curing agent, antioxidant, and mica powder are added to a mixer and mixed evenly, extruded at 95-125°C, pressed into tablets, crushed to obtain a base powder; additives are calculated in parts by mass: 2 parts of hard wax, 0.5 parts of degassing agent, 0.3 parts of leveling agent, 0.5 parts of low temperature accelerator, 0.6 parts of crosslinking agent, 10 parts of pigment; degassing agent is modified polyamide wax; leveling agent is diacetone alco...

Embodiment 3

[0019] Embodiment 3: a preparation process of corrosion-resistant powder coatings, comprising the following steps: 1) Weigh 40 parts of rosin-modified unsaturated polyester resin, 40 parts of epoxy resin, 8 parts of curing agent, 0.8 part of antioxidant, mica 6 parts of powder, 2.0 parts of additives; the average particle size of the base powder is 45 μm, the mixing is carried out in a high-speed mixer, and the mixing time is 10 minutes; 2) The rosin modified unsaturated polyester resin, epoxy resin, curing agent , anti-oxidant, mica powder is added to the mixer and mixed evenly, extruded at 95-125 ° C, pressed into tablets, crushed to get the base powder; additives in parts by mass: 4 parts of hardening wax, 0.6 parts of degassing agent, 0.3 parts of leveling agent, 0.4 parts of low temperature accelerator, 1 part of crosslinking agent, 20 parts of pigment; degassing agent is modified polypropylene wax; leveling agent is polydimethylsiloxane; low temperature accelerator is 2- ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation process of a corrosion-resistant powder coating. The preparation process comprises the following steps: 1) weighing the following raw materials in parts by mass: 20-40 parts of rosin modified unsaturated polyester resin, 20-40 parts of epoxy resin, 4-10 parts of a curing agent, 0.1-1 part of an antioxidant, 5-6 parts of mica powder and 1.2-2.7 parts of an auxiliary agent; 2) adding the rosin modified unsaturated polyester resin, epoxy resin, a curing agent, an antioxidant and mica powder into a stirrer, and carrying out uniformly mixing, extruding, tabletting and crushing at 95-125 DEG C to obtain base powder; 3) adding an auxiliary agent into the base powder obtained in the step 2), and uniformly stirring; and 4) adding the mixed material into a ball mill for grinding, taking out and sieving to obtain the 670-690 mesh coating. The coating with high corrosion resistance, can be formed after a film is formed on the surface of a part to be coated,the coating is non-toxic, harmless, stable in performance, not easy to burn and very environment-friendly, and water and other corrosive substances are strongly blocked from permeating the coating, so that a metal material in the coating is prevented from being corroded.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a preparation process of corrosion-resistant powder coatings. Background technique [0002] Corrosion-resistant and environmentally friendly coatings have always been one of the important branches of coatings and are widely used in industrial production. In the production of the national economy, the use of a large number of metal products makes the requirements for corrosion resistance of equipment very high, and the market demand for corrosion-resistant coatings continues to rise. At present, the strong acid corrosion resistant coatings in our country are mainly concentrated in liquid coatings, and there are often toxic solvents in the liquid coatings, which will cause damage to human health and pollute the environment. [0003] Powder coating is a new, solvent-free, easy-to-operate, 100% solid powder-like environmentally friendly coating, which is harmless and environmentall...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/06C09D163/00C09D5/03C09D5/08C09D7/61
CPCC09D5/033C09D5/08C09D163/00C09D167/06C08L63/00C08K13/02C08K3/34
Inventor 夏连心朱满子方志旺吴杏子付军
Owner HUNAN LIANXIN SCI & TECH CO LTD