CN104177988A - Power coating for metal bonding - Google Patents

Abstract

The invention relates to a power coating for metal bonding. The power coating comprises the following raw materials in parts by weight: 40-55 parts of epoxy E51, 10-20 parts of epoxy E20, 10-20 parts of thermosetting A-stage phenolic resin, 5-15 parts of rutile-type titanium dioxide powder, 0.5-1 part of polymethyl acrylate, 0.2-1 part of benzoin, 0.5-2 parts of phthalocyanine pigment, 10-30 parts of precipitate barium sulfate, 0.3-1 part of ammonium molybdate, 1-2 parts of tricalcium silicate, 0.1-0.3 part of sodium fluoroborate, 2-3 parts of a modified additive and 0.1-0.2 part of flumorph. The power coating disclosed by the invention is mainly used for bonding an oil filter screen with a net rack together to prepare a petroleum filter screen and has the advantages of very good metal cohesiveness, high bonding strength, stripping resistance, strong adhesive force and heat resistance and good flexibility.

Description

A kind of powder coating for metal bonding

Technical field

The present invention relates generally to paint field, relates in particular to a kind of powder coating for metal bonding.

Background technology

Powder coating is a kind of novel not containing solvent 100% solid powdery coating.There is solvent-free, pollution-free, recyclable, environmental protection, the saving energy and resource, physical strength high reduces labor intensity and films; Powder coating is and the diverse form of general coating, and it is that state with fines exists.Owing to not using solvent, so be called powder coating.The principal feature of powder coating has: have harmless, high-level efficiency, saving resource and environmental protection feature.

Summary of the invention

The object of the invention is just to provide a kind of powder coating for metal bonding.

The present invention is achieved by the following technical solutions:

For a powder coating for metal bonding, it is comprised of the raw material of following weight parts:

Epoxy resin E51 40-55, epoxy resin E20 10-20, thermoset resole 10-20, Rutile type Titanium Dioxide 5-15, polymethyl acrylate 0.5-1, st-yrax 0.2-1, phthalocyanine pigment 0.5-2, process white 10-30, ammonium molybdate 0.3-1, tricalcium silicate 1-2, Sodium tetrafluoroborate 0.1-0.3, modified additive 2-3, flumorph 0.1-0.2;

Described modified additive is comprised of the raw material of following weight parts:

Atlapulgite 14-20, polyisoprene 6-10, lithium silicate 2-3, tetrafluoroethylene wax powder 5-7, alkenyl succinic anhydride 1-2, diacetone-acryloamide(DAA) 0.3-1, hydroxy silicon oil 0.1-0.2, antioxidant 1010 0.1-0.2;

Atlapulgite, polyisoprene are mixed, ball milling is even, add lithium silicate, diacetone-acryloamide(DAA), at 70-75 ℃, be uniformly mixed 20-30 minute, add tetrafluoroethylene wax powder, be stirred to normal temperature, add each raw material of residue, 200-300 rev/min is uniformly mixed 5-7 minute, dries, wear into fine powder, obtain described modified additive.

A preparation method for the powder coating of metal bonding, comprises the following steps:

Formula material requested is added to mixing machine in proportion, first 200-300 rev/min is stirred 3-5 minute, 1000-1600 rev/min is stirred 4-5 minute again, employing twin screw extruder is extruded, through compressing tablet, cooling, broken, abrasive dust, cross 150-170 order and sieve, obtain the described powder coating for metal bonding.

Advantage of the present invention is:

Powder coating of the present invention is mainly used in oil screen and rack to be bonded together, and in order to prepare oil filter screen, has good metal bonding, and cohesive strength is high, stripper-resistance, and sticking power, thermotolerance are strong, and snappiness is good.

Embodiment

Embodiment 1

For a powder coating for metal bonding, it is characterized in that what it was comprised of the raw material of following weight parts:

Epoxy resin E51 55, epoxy resin E20 10, thermoset resole 20, Rutile type Titanium Dioxide 15, polymethyl acrylate 0.5, st-yrax 0.2, phthalocyanine pigment 0.5, process white 30, ammonium molybdate 0.3, tricalcium silicate 2, Sodium tetrafluoroborate 0.3, modified additive 2, flumorph 0.2;

Described modified additive is comprised of the raw material of following weight parts:

Atlapulgite 20, polyisoprene 10, lithium silicate 2, tetrafluoroethylene wax powder 5, alkenyl succinic anhydride 1, diacetone-acryloamide(DAA) 0.3, hydroxy silicon oil 0.2, antioxidant 1010 0.2;

Atlapulgite, polyisoprene are mixed, ball milling is even, add lithium silicate, diacetone-acryloamide(DAA), at 75 ℃, be uniformly mixed 30 minutes, add tetrafluoroethylene wax powder, be stirred to normal temperature, add each raw material of residue, 300 revs/min are uniformly mixed 5 minutes, dry, wear into fine powder, obtain described modified additive.

A preparation method for the powder coating of metal bonding, comprises the following steps:

Formula material requested is added to mixing machine in proportion, and first 300 revs/min are stirred 5 minutes, then 1600 revs/min are stirred 4 minutes, employing twin screw extruder is extruded, through compressing tablet, cooling, broken, abrasive dust, cross 170 orders and sieve, obtain the described powder coating for metal bonding.

Testing method

By framework as for 250 ℃ of baking oven preheatings 30 minutes; Preheated framework is dipped in powder coating of the present invention, and the time is 15 seconds, the about 400-600um of thickness, cooling after, oil screen is overlying on framework, hot-plate is set 200 ℃, compresses 2 minutes;

Claims (2)

1. for a powder coating for metal bonding, it is characterized in that what it was comprised of the raw material of following weight parts:

Epoxy resin E51 40-55, epoxy resin E20 10-20, thermoset resole 10-20, Rutile type Titanium Dioxide 5-15, polymethyl acrylate 0.5-1, st-yrax 0.2-1, phthalocyanine pigment 0.5-2, process white 10-30, ammonium molybdate 0.3-1, tricalcium silicate 1-2, Sodium tetrafluoroborate 0.1-0.3, modified additive 2-3, flumorph 0.1-0.2;

Described modified additive is comprised of the raw material of following weight parts:

Atlapulgite 14-20, polyisoprene 6-10, lithium silicate 2-3, tetrafluoroethylene wax powder 5-7, alkenyl succinic anhydride 1-2, diacetone-acryloamide(DAA) 0.3-1, hydroxy silicon oil 0.1-0.2, antioxidant 1010 0.1-0.2;

Atlapulgite, polyisoprene are mixed, ball milling is even, add lithium silicate, diacetone-acryloamide(DAA), at 70-75 ℃, be uniformly mixed 20-30 minute, add tetrafluoroethylene wax powder, be stirred to normal temperature, add each raw material of residue, 200-300 rev/min is uniformly mixed 5-7 minute, dries, wear into fine powder, obtain described modified additive.

2. a preparation method for the powder coating for metal bonding as claimed in claim 1, is characterized in that comprising the following steps:

Formula material requested is added to mixing machine in proportion, first 200-300 rev/min is stirred 3-5 minute, 1000-1600 rev/min is stirred 4-5 minute again, employing twin screw extruder is extruded, through compressing tablet, cooling, broken, abrasive dust, cross 150-170 order and sieve, obtain the described powder coating for metal bonding.