CN104140697A - Heat-insulating powder coating for tin can - Google Patents

Abstract

The invention discloses heat-insulating powder coating for a tin can. The heat-insulating powder coating for the tin can is prepared from the following raw materials in parts by weight: 60-75 parts of thermoplastic polyester resin, 0.5-1.5 parts of butyl methacrylate, 0.5-1.5 parts of polyethylene wax, 1-2 parts of potassium fluoroaluminate, 0.3-0.5 part of ammonium metavanadate, 3-5 parts of kaolin, 0.6-1 part of trimethylolpropane, 2-3 parts of calcium phosphate, 0.1-0.3 part of benzoin, 0.7-2 parts of bisphenol A phosphite, 2-4 parts of magnesium powder, 1-2 parts of propolis, 1-2 parts of diazolidinyl urea, 0.1-0.2 part of sea buckthron oil, 5-25 parts of nano diatomite, 0.1-0.2 part of polyimide and 2-3 parts of modifying aid. The heat-insulating powder coating is especially applicable to the tin can and good in heat insulation property and corrosion resistance, can realize good protective effect and is short in curing time, simple in construction, strong in adhesive force and good in flexibility and steaming resistance.

Description

A kind of tinplate can heat-insulating powder coating

Technical field

The present invention relates generally to paint field, relates in particular to a kind of tinplate can heat-insulating powder coating.

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 tinplate can heat-insulating powder coating.

The present invention is achieved by the following technical solutions:

A tinplate can heat-insulating powder coating, it is comprised of the raw material of following weight parts:

Thermoplastic polyester 60-75, butyl methacrylate 0.5-1.5, polyethylene wax 0.5-1.5, potassium fluoroaluminate 1-2, ammonium meta-vanadate 0.3-0.5, white bole 3-5, TriMethylolPropane(TMP) 0.6-1, calcium phosphate 2-3, st-yrax 0.1-0.3, phosphorous acid dihydroxyphenyl propane ester 0.7-2, the strong powder 2-4 of magnesium, propolis 1-2, two Imidurea 1-2, Oleum Hippophae 0.1-0.2, nano diatomite 5-25, polyimide 0.1-0.2, modified additive 2-3;

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 heat-insulating powder coating for tinplate can, comprises the following steps:

By white bole, calcium phosphate, the strong powder of magnesium mixes, after ball milling is even, add polyethylene wax, propolis, at 50-60 ℃, be uniformly mixed 4-7 minute, drip Oleum Hippophae, after dropwising, be stirred to normal temperature, add TriMethylolPropane(TMP), polyimide, 300-400 rev/min is uniformly mixed 2-3 minute, add each raw material of residue, send into mixing machine, 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, crossing 150-170 order sieves, obtain described tinplate can heat-insulating powder coating.

Advantage of the present invention is:

Powder coating of the present invention is specially adapted to tinplate can use, and thermal insulation, good corrosion resistance can play good protection effect, and the paint solidification time of the present invention is short, and construction is simple, strong adhesion, and snappiness is good, and resistance to cooking property is good.

Embodiment

Embodiment 1

A tinplate can heat-insulating powder coating, is characterized in that what it was comprised of the raw material of following weight parts:

Thermoplastic polyester 60-75, butyl methacrylate 1.5, polyethylene wax 0.5, potassium fluoroaluminate 2, ammonium meta-vanadate 0.5, white bole 3, TriMethylolPropane(TMP) 0.6, calcium phosphate 3, st-yrax 0.3, phosphorous acid dihydroxyphenyl propane ester 0.7, the strong powder 2 of magnesium, propolis 1, two Imidurea 2, Oleum Hippophae 0.2, nano diatomite 5, polyimide 0.2, modified additive 3;

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

Atlapulgite 20, polyisoprene 10, lithium silicate 3, tetrafluoroethylene wax powder 7, 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 20 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 heat-insulating powder coating for tinplate can, comprises the following steps:

White bole, calcium phosphate, the strong powder of magnesium are mixed, after ball milling is even, add polyethylene wax, propolis, at 60 ℃, be uniformly mixed 4 minutes, drip Oleum Hippophae, after dropwising, be stirred to normal temperature, add TriMethylolPropane(TMP), polyimide, 400 revs/min are uniformly mixed 3 minutes, add each raw material of residue, send into mixing machine, first 300 revs/min are stirred 3 minutes, 1600 revs/min are stirred 5 minutes again, adopt twin screw extruder to extrude, through compressing tablet, cooling, broken, abrasive dust, cross 170 orders and sieve, obtain described tinplate can heat-insulating powder coating.

Testing method

The Ma Kou cutting is through welding machine welding tank processed

Adopt side seam spraying special-purpose electrostatic spray gun, coating thickness 60 ~ 100um

230 ℃ solidify for 20 seconds

Intercepting is filmed and is analyzed as follows:

Claims (2)

1. a tinplate can heat-insulating powder coating, is characterized in that what it was comprised of the raw material of following weight parts:

Thermoplastic polyester 60-75, butyl methacrylate 0.5-1.5, polyethylene wax 0.5-1.5, potassium fluoroaluminate 1-2, ammonium meta-vanadate 0.3-0.5, white bole 3-5, TriMethylolPropane(TMP) 0.6-1, calcium phosphate 2-3, st-yrax 0.1-0.3, phosphorous acid dihydroxyphenyl propane ester 0.7-2, the strong powder 2-4 of magnesium, propolis 1-2, two Imidurea 1-2, Oleum Hippophae 0.1-0.2, nano diatomite 5-25, polyimide 0.1-0.2, modified additive 2-3;

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 heat-insulating powder coating for tinplate can as claimed in claim 1, is characterized in that comprising the following steps:

By white bole, calcium phosphate, the strong powder of magnesium mixes, after ball milling is even, add polyethylene wax, propolis, at 50-60 ℃, be uniformly mixed 4-7 minute, drip Oleum Hippophae, after dropwising, be stirred to normal temperature, add TriMethylolPropane(TMP), polyimide, 300-400 rev/min is uniformly mixed 2-3 minute, add each raw material of residue, send into mixing machine, 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, crossing 150-170 order sieves, obtain described tinplate can heat-insulating powder coating.