CN109731759A - A kind of colored precoating plate with high gloss - Google Patents
A kind of colored precoating plate with high gloss Download PDFInfo
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- CN109731759A CN109731759A CN201811541997.6A CN201811541997A CN109731759A CN 109731759 A CN109731759 A CN 109731759A CN 201811541997 A CN201811541997 A CN 201811541997A CN 109731759 A CN109731759 A CN 109731759A
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Abstract
The invention discloses a kind of colored precoating plate with high gloss, including hot-dip galvanizing sheet steel, the surface of hot-dip galvanizing sheet steel spray one layer of protective primer, and protective primer surface sprays one layer of wear-resisting bright finishing coat.The present invention by the compound one layer of base's prime coat of envelope in hot-dip galvanizing sheet steel, one layer of porous primer layer of surface recombination of base's prime coat, base's prime coat and porous primer layer hot-dip galvanizing sheet steel surface composition protective primer layer；Due to being mixed with paraffin in composite primer, when composite primer is attached on base's primer coat surface, the paraffin wherein mixed melts at high temperature, the occupancy site of paraffin is vacated, and is covered with the gap that paraffin is vacated on the surface of base's prime coat at this time, so that primer coat surface is coarse, convenient for can be realized in later period spray paint and the combination of finishing coat, it prevents top coat layer from removing, solves and be directly coated with finishing coat, the problem of causing top coat layer to be easily peeled off in primer coat surface in the prior art.
Description
Technical field
The invention belongs to household electrical appliances field of material preparation, are related to a kind of colored precoating plate with high gloss.
Background technique
Existing household electrical appliances are in order to realize attractive and durable performance, usually using colour precoating plate, wherein colored precoating plate is
Using hot-dip galvanizing sheet steel as substrate, the corrosion resistance of steel plate is realized by zinc coat, by being coated with one layer of bottom on the surface of steel plate
Then paint sprays a level paint on the surface of priming paint, realize surface of steel plate high glaze, and the performance of rub resistance is existing colored pre-
It applies steel plate and is directly coated with finishing coat on the surface of priming paint, due to there is certain surface tension between priming paint and finishing coat, in hot humid
Environment in be easy to cause finishing coat to separate blistering or removing with priming paint, not only influence beautiful, and prime coat cannot be prevented
Shield, while the glossiness of top coat layer is relatively low.
Summary of the invention
The purpose of the present invention is to provide a kind of colored precoating plate with high gloss, the precoating plate pass through in hot galvanizing
The compound one layer of base's prime coat of the envelope of steel plate, one layer of porous primer layer of surface recombination of base's prime coat, base's prime coat
With porous primer layer hot-dip galvanizing sheet steel surface composition protective primer layer；Due to being mixed with paraffin in composite primer, compound
When priming paint is attached on base's primer coat surface, wherein mixed paraffin melts at high temperature, the occupancy site of paraffin is vacated, at this time
It is covered with the gap that paraffin is vacated on the surface of base's prime coat, so that primer coat surface is coarse, convenient in later period spray paint
It can be realized and the combination of finishing coat, prevent top coat layer from removing, solve and be directly coated with finishing coat in primer coat surface in the prior art,
The problem of causing top coat layer to be easily peeled off.
The present invention adds polyamide in finishing coat synthesis process, right together by polyamide and the curing agent that adds lustre to
Novolac epoxy resin is solidified, so that introducing polyamide on novolac epoxy resin chain, due to novolac epoxy resin and is gathered
Amide resin all has higher adhesive property, and the knot between finishing coat and prime coat can be further increased by the combination of the two
Conjunction ability, and then can be effectively solved the problem of top coat layer is easily peeled off in the prior art.
The present invention adds a certain amount of curing agent that adds lustre in top coat layer, and quaternary ammonium salt base is contained in the one end for the curing agent that adds lustre to
Group, the other end contain chain alkyl, so that the curing agent that adds lustre to of preparation is with one end hydrophily with higher, the other end
Hydrophobicity with higher can reduce the surface tension of finishing coat and primed surface by the effect for the curing agent that adds lustre to, and then drop
The roughness of low surface of steel plate, so that finishing coat surfacing pore-free, while its glossiness improves, so that top coat layer glossiness reaches
To 95.
The present invention introduces polyamide on novolac epoxy resin, due to polyamides resin wear-resisting property with higher,
And then can be improved the abrasive resistance of coating, and novolac epoxy resin mechanical property with higher itself, so that shape
At film intensity with higher and wear-resisting property.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of colored precoating plate with high gloss, including hot-dip galvanizing sheet steel, the surface of hot-dip galvanizing sheet steel spray one layer of protection
Priming paint, protective primer surface spray one layer of wear-resisting bright finishing coat；
The specific preparation process of wear-resisting light finishing coat is as follows: filler and levelling agent being added in novolac epoxy resin and are stirred
It is even, add lustre to curing agent and the polyamide that is dissolved in dimethylbenzene are added then while thereto, is stirred 20- under room temperature
30min obtains wear-resisting bright finishing coat；
Wear-resisting wet look enamel-cover includes the raw material of following parts by weight:
43-48 parts of novolac epoxy resin, 7-9 parts of polyamide, 13-15 parts of dimethylbenzene, add lustre to 3-5 parts of curing agent, filler 13-
16 parts, 1-2 parts of levelling agent；
Wherein polyamide is neutral polyamide；Filler is that talcum powder, kaolin and nano silica are according to mass ratio
1:1:0.25 ratio be mixed with；Levelling agent is organosilicon levelling agent；
Wherein add lustre to curing agent specific preparation process it is as follows:
Step 1: 4- methoxybenzene butanone, formaldehyde and dimethylamine are added to the water, a small amount of hydrochloric acid is added thereto after mixing,
PH=1 for keeping solution, is warming up to 80-85 DEG C of reaction 10-12h, divides after obtained product is washed with saturated sodium chloride solution
Obtained organic layer is evaporated under reduced pressure by liquid, obtains product A；Wherein the connected alkyl of ketone group contains on 4- methoxybenzene butanone
There is wave hydrogen living, enol form conversion can occur in acid condition, also contain wave hydrogen living, the two and first on the amino in dimethylamine
Mannich reaction occurs in acid condition for aldehyde, generates tertiary amine, and reaction structure formula is as shown in Figure 1；Wherein 4- methoxybenzene fourth
Ketone, formaldehyde and dimethylamine are mixed with molar ratio for the ratio of 1:1.1:1.2；
Step 2: the product A and n-octyl chloride that prepare in step 1 being added in butyl acetate, 80-90 DEG C of reaction 5- is warming up to
Then 6h removes unreacted n-octyl chloride by vacuum distillation, obtains quaternary ammonium salt；0.60- wherein is added in every gram of product A
0.61g n-octyl chloride；
Step 3: quaternary ammonium salt prepared by step 2 is added in methylene chloride, is warming up to 70 DEG C of reflux, then adds into reaction vessel
Enter hydroiodic acid, constant temperature back flow reaction 9-10h, the product evaporation of solvent and hydroiodic acid that then will be obtained obtain product B；Often
0.15-0.16g hydroiodic acid is added in gram quaternary ammonium salt；
Step 4: by the product B prepared in step 3, chloro-acetyl chloride adding into acetone, a certain amount of hydrogen being then added thereto
Sodium oxide molybdena, control temperature react 5-6h at 70-75 DEG C, obtained product are evaporated solvent therein, then will obtain
Crystal is added to the water, and carries out liquid separation, obtained water phase evaporative crystallization is obtained product C；0.29- wherein is added in every gram of product B
0.035-0.038g sodium hydroxide is added in 0.31g chloro-acetyl chloride；
Step 5: the product C prepared in step 3 and dodecyl primary amine being added in hexamethylene, while hydroxide being added thereto
Sodium and lutidines then heat to 110 DEG C of back flow reaction 20-21h, and obtained product is then added to the water washing point
Liquid, and obtained solution is evaporated under reduced pressure, the curing agent that adds lustre to is obtained, reaction structure formula is as shown in Figure 2；Wherein every gram of product
0.41-0.43g dodecyl primary amine is added in C, while sodium hydroxide 0.024-0.025g being added in every gram of product C, is added two
Picoline 0.31-0.32g；Since quaternary ammonium salt group is contained in the one end for the curing agent that adds lustre to, the other end contains chain alkyl, in turn
So that the curing agent that adds lustre to of preparation is with one end hydrophily with higher, other end hydrophobicity with higher, by adding lustre to
The effect of curing agent can reduce the surface tension of finishing coat and primed surface, and then reduce the roughness of surface of steel plate, improve it
Gloss brightness, while the secondary amine contained in the curing agent that adds lustre to can be realized the curing performance to novolac epoxy resin, while
Amido bond in solidification process in polyamide can react solidification with the epoxy group in novolac epoxy resin simultaneously, so that
Both the curing agent that adds lustre to is connected in novolac epoxy resin, while connecting polyamide, since polyamides resin is with higher wear-resisting
Performance, and then can be improved the abrasive resistance of coating, and novolac epoxy resin mechanical property with higher itself, and then make
The film that must be formed intensity with higher and wear-resisting property, while glossiness with higher, while polyurethane resin has
Higher adhesive property can be improved the adhesive force between finishing coat and steel plate by the synergistic effect of novolac epoxy resin；
The preparation process of colored precoating plate is as follows:
The first step is rinsed well with clear water after hot-dip galvanizing sheet steel to be impregnated to 8-10h in the sodium hydroxide solution that concentration is 5%, is removed
Reduce phlegm and internal heat the lipoid substance of galvanized steel sheet surface, while carrying out bead to the surface of hot-dip galvanizing sheet steel；
The surface of treated in first step hot-dip galvanizing sheet steel is sprayed one layer of priming paint, dried in drying room by second step, so that
The surface of hot-dip galvanizing sheet steel forms base's prime coat that a layer thickness is 0.3-0.4mm；
Third step sprays one layer of composite primer on the surface of base's prime coat, dries at 50 DEG C after spraying uniformly, then by plate
Material toasts at 90 DEG C, rinses the surface of plate after baking with ethyl alcohol at high temperature, then dries, the surface of plate is covered at this time
Gap, one layer of porous primer layer of surface recombination of base's prime coat, base's prime coat and porous primer layer are in hot-dip galvanizing sheet steel
Surface composition protective primer layer；Due to being mixed with paraffin in composite primer, when composite primer is attached on base's primer coat surface,
The paraffin wherein mixed melts at high temperature, and the occupancy site of paraffin is vacated, and is covered with paraffin on the surface of base's prime coat at this time
The gap vacated convenient for can be realized in later period spray paint and the combination of finishing coat, prevents face so that primer coat surface is coarse
Paint layer removing；
4th step sprays one layer of wear-resisting bright finishing coat on the surface of adhesion primer layer, after spraying uniformly in 60 DEG C of drying room
Drying, surface recombination a layer thickness of adhesion primer layer are the top coat layer of 0.5-0.6mm.
Wherein composite primer is to be mixed with priming paint and paraffin with the mass ratio of 1:0.35-0.36.
Beneficial effects of the present invention:
The present invention passes through the compound one layer of base's prime coat of envelope in hot-dip galvanizing sheet steel, one layer of the surface recombination of base's prime coat
The surface composition protective primer layer of porous primer layer, base's prime coat and porous primer layer in hot-dip galvanizing sheet steel；Due to composite base
Paraffin is mixed in paint, when composite primer is attached on base's primer coat surface, wherein mixed paraffin melts at high temperature, stone
The occupancy site of wax is vacated, and is covered with the gap that paraffin is vacated on the surface of base's prime coat at this time, so that primer coat surface is coarse,
Convenient for can be realized in later period spray paint and the combination of finishing coat, preventing top coat layer from removing, solving in the prior art directly
The problem of primer coat surface is coated with finishing coat, top coat layer is caused to be easily peeled off.
The present invention adds polyamide in finishing coat synthesis process, right together by polyamide and the curing agent that adds lustre to
Novolac epoxy resin is solidified, so that introducing polyamide on novolac epoxy resin chain, due to novolac epoxy resin and is gathered
Amide resin all has higher adhesive property, and the knot between finishing coat and prime coat can be further increased by the combination of the two
Conjunction ability, and then can be effectively solved the problem of top coat layer is easily peeled off in the prior art.
The present invention adds a certain amount of curing agent that adds lustre in top coat layer, and quaternary ammonium salt base is contained in the one end for the curing agent that adds lustre to
Group, the other end contain chain alkyl, so that the curing agent that adds lustre to of preparation is with one end hydrophily with higher, the other end
Hydrophobicity with higher can reduce the surface tension of finishing coat and primed surface by the effect for the curing agent that adds lustre to, and then drop
The roughness of low surface of steel plate, so that finishing coat surfacing pore-free, while its glossiness improves, so that top coat layer glossiness reaches
To 95.
The present invention introduces polyamide on novolac epoxy resin, due to polyamides resin wear-resisting property with higher,
And then can be improved the abrasive resistance of coating, and novolac epoxy resin mechanical property with higher itself, so that shape
At film intensity with higher and wear-resisting property.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the drawings.
Fig. 1 is reaction structure formula in the wear-resisting bright finishing coat preparation process of the present invention；
Fig. 2 is reaction structure formula in the wear-resisting bright finishing coat preparation process of the present invention.
Specific embodiment
It is described in detail referring to FIG. 1-2, in conjunction with following examples:
Embodiment 1:
The specific preparation process of wear-resisting light finishing coat is as follows: 4.3kg phenol is added in 1.3kg filler and 0.1kg organosilicon levelling agent
It is uniformly mixed in formaldehyde epoxy resin, is added that 0.3kg adds lustre to curing agent and 0.7kg is dissolved in 1.3kg then while thereto
Polyamide in dimethylbenzene is stirred 20-30min under room temperature, obtains wear-resisting bright finishing coat；Filler is talcum powder, height
Ridge soil and nano silica are mixed according to the ratio that mass ratio is 1:1:0.25；
Wherein add lustre to curing agent specific preparation process it is as follows:
Step 1: the ratio by 4- methoxybenzene butanone, formaldehyde and dimethylamine with molar ratio for 1:1.1:1.2, which mixes, to be added to the water,
A small amount of hydrochloric acid is added thereto after mixing, keeps pH=1 of solution, is warming up to 80 DEG C of reaction 10-12h, the product that will be obtained
Obtained organic layer is evaporated under reduced pressure by liquid separation after being washed with saturated sodium chloride solution, obtains product A；
Step 2: product A and the 0.6kg n-octyl chloride prepared in 1kg step 1 being added in butyl acetate, is warming up to 80 DEG C instead
5h is answered, unreacted n-octyl chloride is then removed by vacuum distillation, obtains quaternary ammonium salt；
Step 3: quaternary ammonium salt prepared by 1kg step 2 is added in methylene chloride, 70 DEG C of reflux is warming up to, then to reaction vessel
Middle addition 0.15kg hydroiodic acid, constant temperature back flow reaction 9-10h, the product evaporation of solvent and hydroiodic acid that then will be obtained obtain
To product B；
Step 4: then product B, 0.29kg the chloro-acetyl chloride adding into acetone that will be prepared in 1kg step 3 is added thereto
0.035kg sodium hydroxide, control temperature react 5-6h at 75 DEG C, obtained product are evaporated solvent therein, then will
Obtained crystal is added to the water, and carries out liquid separation, obtained water phase evaporative crystallization is obtained product C；
Step 5: product C and 0.41kg the dodecyl primary amine prepared in 1kg step 3 being added in hexamethylene, while thereto
0.024g sodium hydroxide and 0.31g lutidines is added, then heats to 110 DEG C of back flow reaction 20-21h, then will obtain
Product be added to the water washing liquid separation, and obtained solution is evaporated under reduced pressure, obtains the curing agent that adds lustre to.
Embodiment 2:
The specific preparation process of wear-resisting light finishing coat is as follows: 4.3kg phenol is added in 1.3kg filler and 0.1kg organosilicon levelling agent
It is uniformly mixed in formaldehyde epoxy resin, is added that 0.2kg adds lustre to curing agent and 0.7kg is dissolved in 1.3kg then while thereto
Polyamide in dimethylbenzene is stirred 20-30min under room temperature, obtains wear-resisting bright finishing coat.
Embodiment 3:
The specific preparation process of wear-resisting light finishing coat is as follows: 4.3kg phenol is added in 1.3kg filler and 0.1kg organosilicon levelling agent
It is uniformly mixed in formaldehyde epoxy resin, the curing agent that adds lustre to prepared in 1kg embodiment 1, room temperature is added then while thereto
Under be stirred 20-30min, obtain wear-resisting bright finishing coat.
Embodiment 4:
The specific preparation process of wear-resisting light finishing coat is as follows: 4.3kg phenol is added in 1.3kg filler and 0.1kg organosilicon levelling agent
It is uniformly mixed in formaldehyde epoxy resin, 0.12kg dodecyl primary amine then while thereto is added and 0.7kg is dissolved in
Polyamide in 1.3kg dimethylbenzene is stirred 20-30min under room temperature, obtains wear-resisting bright finishing coat.
Embodiment 5:
The preparation process of colored precoating plate is as follows:
The first step is rinsed well with clear water after hot-dip galvanizing sheet steel to be impregnated to 8-10h in the sodium hydroxide solution that concentration is 5%, is removed
Reduce phlegm and internal heat the lipoid substance of galvanized steel sheet surface, while carrying out bead to the surface of hot-dip galvanizing sheet steel；
The surface of treated in first step hot-dip galvanizing sheet steel is sprayed one layer of priming paint, dried in drying room by second step, so that
The surface of hot-dip galvanizing sheet steel forms base's prime coat that a layer thickness is 0.3-0.4mm；
Third step sprays one layer of composite primer on the surface of base's prime coat, and wherein composite primer is by priming paint and paraffin with 1:
0.35 mass ratio is mixed with；It dries, then toasts plate at 90 DEG C, in height after baking at 50 DEG C after spraying uniformly
The surface for rinsing plate under temperature with ethyl alcohol, is then dried, the surface of plate is covered with gap, the surface recombination of base's prime coat at this time
The surface composition protective primer layer of one layer of porous primer layer, base's prime coat and porous primer layer in hot-dip galvanizing sheet steel；
4th step sprays wear-resisting bright finishing coat prepared by one layer of embodiment 1 on the surface of adhesion primer layer, 60 after spraying uniformly
DEG C drying room in dry, surface recombination a layer thickness of adhesion primer layer is the top coat layer of 0.5-0.6mm.
Embodiment 6:
The preparation process of colored precoating plate is same as Example 5, prepared by embodiment 1 used in the 4th step of embodiment 5 resistance to
Polish the wear-resisting bright finishing coat that bright finishing coat replaces with the preparation of embodiment 2.
Embodiment 7:
The preparation process of colored precoating plate is same as Example 5, prepared by embodiment 1 used in the 4th step of embodiment 5 resistance to
Polish the wear-resisting bright finishing coat that bright finishing coat replaces with the preparation of embodiment 3.
Embodiment 8:
The preparation process of colored precoating plate is same as Example 5, prepared by embodiment 1 used in the 4th step of embodiment 5 resistance to
Polish the wear-resisting bright finishing coat that bright finishing coat replaces with the preparation of embodiment 4.
Embodiment 9:
The preparation process of colored precoating plate is as follows:
The first step is rinsed well with clear water after hot-dip galvanizing sheet steel to be impregnated to 8-10h in the sodium hydroxide solution that concentration is 5%, is removed
Reduce phlegm and internal heat the lipoid substance of galvanized steel sheet surface, while carrying out bead to the surface of hot-dip galvanizing sheet steel；
The surface of treated in first step hot-dip galvanizing sheet steel is sprayed one layer of priming paint, dried in drying room by second step, so that
The surface of hot-dip galvanizing sheet steel forms base's prime coat that a layer thickness is 0.3-0.4mm；
Third step sprays wear-resisting bright finishing coat prepared by one layer of embodiment 1 on the surface of base's prime coat, 60 after spraying uniformly
DEG C drying room in dry, surface recombination a layer thickness of adhesion primer layer is the top coat layer of 0.5-0.6mm.
Embodiment 10:
By the colored precoating plate prepared in embodiment 5-9 impregnated in 80-85 DEG C of hot water respectively for 24 hours, 48h, 8d, 20d, 30d,
The top coat layer of the colored precoating plate surface of measurement adheres to grade；1 grade, 2 grades does not separate for adhesion-tight, smooth surface, and 3 grades are attachment
Securely but there is bubble generation on surface, and 4 grades are to be partially stripped, and 5 grades are removed for top coat layer；
The top coat layer adhesive force test result of the colored precoating plate surface prepared in 1 embodiment 5-9 of table
As shown in Table 1, in embodiment 5 in top coat layer by polyamide and add lustre to curing agent simultaneously to novolac epoxy resin into
Row solidification, since polyamide and novolac epoxy resin all have higher adhesive property, the finishing coat prepared after the two mixing
Adhesion enhancing, while in one layer of porous primer layer of the surface recombination of prime coat, due to being mixed with paraffin in composite primer, multiple
When conjunction priming paint is attached on base's primer coat surface, wherein mixed paraffin melts at high temperature, the occupancy site of paraffin is vacated, this
When on the surface of base's prime coat be covered with the gap that paraffin is vacated so that primer coat surface is coarse, convenient in later period spray paint
When can be realized and the combination of finishing coat, prevent top coat layer from removing, so that top coat layer boiling 30d in 80-85 DEG C of hot water
The adhesive force painted below is still 2 grades, while due to not having addition polyamide in embodiment 7, so that the tackifying ability of finishing coat
Decline, there is a bubble generation in the hot water when boiling 20d, paint layer removing in part when 30d, and not at base bottom in embodiment 9
The surface recombination porous primer layer of paint layer, due to primer coat surface it is smooth so that top coat layer is compound after be easy to remove,
Occurs bubble when boiling 8d, boiling 30d is completely exfoliated.
Embodiment 11
The appearance of the colored precoating plate surface top coat layer prepared in observation embodiment 5-9, while the glossiness of top coat layer is measured, it ties
Fruit is as shown in table 2；
The colored precoating plate surface top coat layer performance measurement result prepared in 2 embodiment 5-9 of table
As shown in Table 2 when added in top coat layer it is a certain amount of add lustre to curing agent when, top coat layer glossiness is up to 95, and the solidification that adds lustre to
Its glossiness reduces when the content of agent is reduced, while finishing coat layer surface has stomata appearance, since the one end for the curing agent that adds lustre to is contained
Quaternary ammonium salt group, the other end contain chain alkyl, so that the curing agent that adds lustre to of preparation is with higher hydrophilic with one end
Property, other end hydrophobicity with higher can reduce the surface of finishing coat and primed surface by the effect for the curing agent that adds lustre to
Power, and then the roughness of surface of steel plate is reduced, so that finishing coat surfacing pore-free, while its glossiness improves.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (9)
1. a kind of colored precoating plate with high gloss, which is characterized in that including hot-dip galvanizing sheet steel, the surface of hot-dip galvanizing sheet steel
One layer of protective primer is sprayed, protective primer surface sprays one layer of wear-resisting bright finishing coat；
The specific preparation process of wear-resisting light finishing coat is as follows: filler and levelling agent being added in novolac epoxy resin and are stirred
It is even, add lustre to curing agent and the polyamide that is dissolved in dimethylbenzene are added then while thereto, is stirred 20- under room temperature
30min obtains wear-resisting bright finishing coat；
Wherein add lustre to curing agent specific preparation process it is as follows:
Step 1: 4- methoxybenzene butanone, formaldehyde and dimethylamine are added to the water, a small amount of hydrochloric acid is added thereto after mixing,
PH=1 for keeping solution, is warming up to 80-85 DEG C of reaction 10-12h, divides after obtained product is washed with saturated sodium chloride solution
Obtained organic layer is evaporated under reduced pressure by liquid, obtains product A；
Step 2: the product A and n-octyl chloride that prepare in step 1 being added in butyl acetate, 80-90 DEG C of reaction 5- is warming up to
Then 6h removes unreacted n-octyl chloride by vacuum distillation, obtains quaternary ammonium salt；
Step 3: quaternary ammonium salt prepared by step 2 is added in methylene chloride, 130 DEG C of reflux is warming up to, then into reaction vessel
Hydroiodic acid, constant temperature back flow reaction 9-10h is added, the product evaporation of solvent and hydroiodic acid that then will be obtained obtain product B；
Step 4: by the product B prepared in step 3, chloro-acetyl chloride adding into acetone, a certain amount of hydrogen being then added thereto
Sodium oxide molybdena, control temperature react 5-6h at 70-75 DEG C, obtained product are evaporated solvent therein, then will obtain
Crystal is added to the water, and carries out liquid separation, obtained water phase evaporative crystallization is obtained product C；
Step 5: the product C prepared in step 3 and dodecyl primary amine being added in hexamethylene, while hydroxide being added thereto
Sodium and lutidines then heat to 110 DEG C of back flow reaction 20-21h, and obtained product is then added to the water washing point
Liquid, and obtained solution is evaporated under reduced pressure, obtain the curing agent that adds lustre to.
2. a kind of colored precoating plate with high gloss according to claim 1, which is characterized in that 4- first in step 1
Oxygroup phenyl propyl ketone, formaldehyde and dimethylamine are mixed with molar ratio for the ratio of 1:1.1:1.2.
3. a kind of colored precoating plate with high gloss according to claim 1, which is characterized in that every gram in step 2
0.60-0.61g n-octyl chloride is added in product A.
4. a kind of colored precoating plate with high gloss according to claim 1, which is characterized in that every gram in step 3
0.15-0.16g hydroiodic acid is added in quaternary ammonium salt.
5. a kind of colored precoating plate with high gloss according to claim 1, which is characterized in that every gram in step 4
0.29-0.31g chloro-acetyl chloride is added in product B, 0.035-0.038g sodium hydroxide is added.
6. a kind of colored precoating plate with high gloss according to claim 1, which is characterized in that in step 5 wherein
0.41-0.43g dodecyl primary amine is added in every gram of product C, while sodium hydroxide 0.024- being added in every gram of product C
Lutidines 0.31-0.32g is added in 0.025g.
7. a kind of colored precoating plate with high gloss according to claim 1, which is characterized in that wear-resisting light finishing coat
The parts by weight of each component raw material are as follows in preparation process: 43-48 parts of novolac epoxy resin, 7-9 parts of polyamide, dimethylbenzene
13-15 parts, 3-5 parts of the curing agent that adds lustre to, 13-16 parts of filler, 1-2 parts of levelling agent;Wherein polyamide is neutral polyamide；
Filler is that talcum powder, kaolin and nano silica are mixed with according to the ratio that mass ratio is 1:1:0.25；Levelling agent is
Organosilicon levelling agent.
8. a kind of colored precoating plate with high gloss according to claim 1, which is characterized in that colored precoating plate
Preparation process is as follows:
The first step is rinsed well with clear water after hot-dip galvanizing sheet steel to be impregnated to 8-10h in the sodium hydroxide solution that concentration is 5%, is removed
Reduce phlegm and internal heat the lipoid substance of galvanized steel sheet surface, while carrying out bead to the surface of hot-dip galvanizing sheet steel；
The surface of treated in first step hot-dip galvanizing sheet steel is sprayed one layer of priming paint, dried in drying room by second step, so that
The surface of hot-dip galvanizing sheet steel forms base's prime coat that a layer thickness is 0.3-0.4mm；
Third step sprays one layer of composite primer on the surface of base's prime coat, dries at 50 DEG C after spraying uniformly, then by plate
Material toasts at 90 DEG C, rinses the surface of plate after baking with ethyl alcohol at high temperature, then dries, the surface of plate is covered at this time
Gap, one layer of porous primer layer of surface recombination of base's prime coat, base's prime coat and porous primer layer are in hot-dip galvanizing sheet steel
Surface composition protective primer layer；
4th step sprays one layer of wear-resisting bright finishing coat on the surface of adhesion primer layer, after spraying uniformly in 60 DEG C of drying room
Drying, surface recombination a layer thickness of adhesion primer layer are the top coat layer of 0.5-0.6mm.
9. a kind of colored precoating plate with high gloss according to claim 8, which is characterized in that composite primer be by
Priming paint and paraffin are mixed with the mass ratio of 1:0.35-0.36.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811541997.6A CN109731759B (en) | 2018-12-17 | 2018-12-17 | Colored precoating plate with high glossiness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811541997.6A CN109731759B (en) | 2018-12-17 | 2018-12-17 | Colored precoating plate with high glossiness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109731759A true CN109731759A (en) | 2019-05-10 |
| CN109731759B CN109731759B (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811541997.6A Active CN109731759B (en) | 2018-12-17 | 2018-12-17 | Colored precoating plate with high glossiness |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899136A (en) * | 2010-07-22 | 2010-12-01 | 中科院广州化灌工程有限公司 | Modified phenolic resin and application thereof in anti-corrosive paint |
| CN102815160A (en) * | 2012-08-06 | 2012-12-12 | 常熟华冶薄板有限公司 | Processing method of high-gloss print steel plates |
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2018
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899136A (en) * | 2010-07-22 | 2010-12-01 | 中科院广州化灌工程有限公司 | Modified phenolic resin and application thereof in anti-corrosive paint |
| CN102815160A (en) * | 2012-08-06 | 2012-12-12 | 常熟华冶薄板有限公司 | Processing method of high-gloss print steel plates |
Non-Patent Citations (1)
| Title |
|---|
| A. YILDIRIM • S, ECT: "Novel Amide-Based Cationic Surfactants as Efficient Corrosion Inhibitors for Carbon Steel in HCl and H2SO4 media", 《JOURNAL OF SURFACTANTS AND DETERGENTS》 * |
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| CN109731759B (en) | 2021-07-09 |
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