CN104119770A

CN104119770A - Corrosion-resistant epoxy resin powder paint

Info

Publication number: CN104119770A
Application number: CN201410298046.6A
Authority: CN
Inventors: 武小国
Original assignee: NANJING PINGHU POWDER MATERIALS Co Ltd
Current assignee: Kunshan Dongda Zhihui Technology Consulting Co., Ltd.
Priority date: 2014-06-27
Filing date: 2014-06-27
Publication date: 2014-10-29

Abstract

The invention relates to a corrosion-resistant epoxy resin powder paint which is prepared from the following raw materials in percentage by weight: 35-40% of epoxy resin, 20-25% of phenol aldehyde resin, 1-4% of leveling agent, 12-18% of titanium white, 12-16% of barium sulfate, 0.2-0.5% of flow accelerator and the balance of filler. The product has the advantages of smooth coating, favorable leveling property, outstanding corrosion resistance, high impact resistance and other favorable mechanical properties, and is suitable for applying the internal and external walls of transmission pipelines for chemistry, chemical industry, petroleum, gas and the like and also suitable to be used as a corrosion-resistant coating on mechanical and electric instruments and equipment. The corrosion-resistant epoxy resin powder paint is free of toxic raw materials which are restricted in China, is green and environment-friendly, and is suitable for wide popularization and application.

Description

A kind of anticorrosion epoxy powder coating

Technical field

The present invention relates to paint field, particularly a kind of anticorrosion epoxy powder coating.

Background technology

Powder coating is that a kind of state with fines exists, do not use the new coating of solvent, have harmless, high-level efficiency, the feature of saving resource, a kind of coating of environmental protection recoverable, heat curable powder coating refers to using thermosetting resin as filmogen, add the solidifying agent of crosslinking reaction can form insoluble not molten quality hard coat after heating, temperature higher this coating can be not softening as thermoplastic coating yet, and can only decompose, the resin adopting due to thermosetting powder coating(s) is the prepolymer that the polymerization degree is lower, molecular weight is lower, so good leveling property of coating, and low-molecular-weight prepolymer is after solidifying, can form the macromole of cross-linked network, thereby coating has better preservative property, receive the favor of pipeline corrosion protection, particularly buried oil and gas pipeline, its requirement for anticorrosion life-span is grown (being generally about 50 years), and execution conditions harshness, therefore, to the machinery of coating, antiseptic property is had relatively high expectations, the protective system using at present, exist mechanical and physical performance poor, preservative effect is undesirable, the problem that set time is long, therefore, develop a kind of antiseptic property good, the powder coating of the good mechanical properties such as anti-impact force, it is this area technical barrier urgently to be resolved hurrily always.

Summary of the invention

For the problems referred to above, provide a kind of antiseptic property good, the epoxy powder coating that mechanical property is strong, material environment friendly of the present invention is nontoxic, can be widely used in the transport pipe coating inner and outer walls such as chemistry, chemical industry, oil, gas, the present invention is achieved in that

A kind of anticorrosion epoxy powder coating, is made up of the raw material of following weight percent, epoxy resin 35-40%, and resol 20-25%, flow agent 1-4%, titanium dioxide 12-16%, barium sulfate 6-8%, flow improver additive 0.2-0.5%, remainder is filler.

Preferably, in the present invention, described epoxy resin is E-12, is GT-7255

Preferably, in the present invention, described flow agent is BNK-LK600.

Preferably, in the present invention, described flow improver additive is EC-408.

Preferably, in the present invention, described filler is Modified Quartz Sand.

The invention has the beneficial effects as follows: product coating is smooth, good leveling property, antiseptic property is outstanding, and the mechanical propertys such as anti-impact force are strong, are applicable to the preservative coat of the transport pipe coating inner and outer walls such as chemistry, chemical industry, oil, gas and mechanical electric instrumentation; The poisonous starting material that this product does not use containing country's restriction, environmental protection, is suitable for extensively promoting the use of.

Embodiment

Embodiment 1

A kind of anticorrosion epoxy powder coating, is made up of the raw material of following weight percent:

Epoxy resin E12 35%, resol 20%, flow agent BNK-LK600 3%, titanium dioxide 16%, barium sulfate 12%, flow improver additive EC-408 0.2%, clout is Modified Quartz Sand.

Embodiment 2

Epoxy resin E12 40%, resol 20%, flow agent BNK-LK600 1%, titanium dioxide 18%, barium sulfate 14%, flow improver additive EC-408 0.5%, clout is Modified Quartz Sand.

Embodiment 3

Epoxy resin E12 40%, resol 25%, flow agent BNK-LK600 4%, titanium dioxide 12%, barium sulfate 16%, flow improver additive EC-408 0.4%, clout is Modified Quartz Sand.

Preparation technology:

(1) each raw material is placed in to the speed mixed 3min(2 of mixing machine with 800rpm according to ratio of components) mixed raw material is melt extruded to feeding section temperature 60 C, 90 DEG C of melt zone temperature, 110 DEG C of discharging section temperature by screw extrusion press;

(3) molten materials, through tabletting machine compressing tablet, is controlled thickness at 3mm, sends in pulverizing mill and pulverizes through fragmentation, sieves.

The anticorrosion epoxy powder coating that embodiment 1-3 is obtained, with the electrostatic spraying of corona spray gun on the thick rust cleaning of 0.8mm, oil removing cold-rolled steel sheet, then at 205 DEG C, toast 15min, coat-thickness 75 μ m, model range estimation film pin hole with legal system for coating 100 μ m, performance test results is as shown in table 1:

Table 1 embodiment 1-3 coating performance test result

The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, and these improve and also should be considered as protection scope of the present invention.

Claims

1. an anticorrosion epoxy powder coating, is characterized in that, is made up of epoxy resin 35-40% the raw material of following weight percent, resol 20-25%, flow agent 1-4%, titanium dioxide 12-18%, barium sulfate 12-16%, flow improver additive 0.2-0.5%, all the other are filler.

2. anticorrosion epoxy powder coating according to claim 1, is characterized in that, described epoxy resin is E-12.

3. anticorrosion epoxy powder coating according to claim 2, is characterized in that, described flow agent is BNK-LK600.

4. basis anticorrosion epoxy powder coating according to claim 3, is characterized in that described flow improver additive is EC-408.

5. according to according to the described anticorrosion epoxy powder coating of one of claim 1-4, it is characterized in that, described filler is Modified Quartz Sand.