CN105926355A - Thermal transfer printing coating and preparation method thereof - Google Patents
Thermal transfer printing coating and preparation method thereof Download PDFInfo
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- CN105926355A CN105926355A CN201610301625.0A CN201610301625A CN105926355A CN 105926355 A CN105926355 A CN 105926355A CN 201610301625 A CN201610301625 A CN 201610301625A CN 105926355 A CN105926355 A CN 105926355A
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- thermal transfer
- transfer coating
- coating
- preparation
- coupling agent
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/46—Non-macromolecular organic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/64—Inorganic compounds
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a thermal transfer printing coating and a preparation method thereof. The coating generated by the coating is compact, tough and wear-resistant, and has good impact resistance, flexibility and bonding force; and the preparation method is simple and efficient.
Description
Technical field
The present invention relates to paint field, be specifically related to a kind of thermal transfer coating and preparation method thereof.
Background technology
Thermal transfer is an emerging typography, and this technique mode of printing is divided into transfer paper printing
With transfer processing two large divisions, wherein (resolution reaches transfer paper printing employing net-point printing
300dpi), pattern is pre-printed transfer paper surface, the pattern levels are rich of printing, color
Bright-coloured, ever-changing, aberration is little, and repeatability is good, the requirement effect of the person that can reach layout,
And it is suitable for producing in enormous quantities；Transfer is processed by heat transfer machine time processing (heating pressurization)
Pattern exquisite on transfer paper is transferred in product surface, and after molding, ink layer is molten with product surface
It is integrated, true to nature beautiful, it is greatly improved the class of product.Powdery paints transfer i.e. uses
Transfer processing technique.
But, the transfer printing process of powdery paints also exists certain problem, as turned for heat
The finished product pattern of print locks into the problem that paper-tear picture is difficult always, causes the pattern transferred out the most clear
Clear, pattern it is also desirable to have higher stability and long-acting weatherability in addition.
Summary of the invention
For solving above-mentioned technical problem present in prior art, the present inventor is carried out
Research extensively and profoundly, finally gives the present invention.
[technical problem]
It is an object of the present invention to provide a kind of thermal transfer coating.
Further object is that the preparation method being to provide above-mentioned thermal transfer coating, institute
State preparation method simple and effective.
[technical scheme]
Water, oxygen and ion are three factors of material corrosion.Coating is a kind of polymer film, energy
Ground resistance delays passing through and playing corrosion-resisting function of above-mentioned three factors in various degree, the most preferably drops
The water penetration of low coating, oxygen permeability, ionic permeability and water absorption, improve vitrification point Tg,
Make epoxy coating have the screening ability of excellence, be the key of solution problem.Transfer powder is come
Saying, the problem that after thermal transfer to be solved, paper-tear picture is difficult, this just requires that accelerating paint solidification reacted
Response speed in journey, improves crosslink density, makes film coated surface form the protecting film of densification, both
Improve the anticorrosive property of coating, also solve the problem that the problem that transfer paper-tear picture is difficult.
Therefore, according to an aspect of the invention, it is provided a kind of thermal transfer coating, described painting
Material comprises the component of following weight portion:
Wherein, described modified epoxy is many phenolic modified epoxy, and its molecular structure is such as
Under:
Wherein, n is the integer of 1 to 7；
The resin that general epoxy coating uses is bisphenol A type epoxy resin, and molecular structure is:
Wherein, p is the integer of 3 to 7.
By contrast, the two ends of common bisphenol-A epoxy molecule are that respond is the strongest
Epoxy radicals, molecular backbone has many ehter bonds, is a kind of linear polyether structure, and p value is bigger
Regularly, apart from each otherly many secondary hydroxyls occur on molecular resin chain, one can be regarded as
Plant long-chain polyhydric alcohol, main chain also has a large amount of phenyl ring, methine and isopropyl.Common bisphenol-A
Each construction unit of epoxy resin gives resin following functions: it is anti-that epoxy radicals and hydroxyl give resin
Ying Xing, makes resin cured matter have the strongest cohesiveness and bonding force；Ether is strong and hydroxyl is polarity
Group, is favorably improved wellability and adhesion；Ether is strong and C-C key to make macromole have submissive
Property；Phenyl ring gives polymer heat-resistant and rigidity；Isopropyl also gives the rigidity that macromole is certain；
And the bond energy of-C-O-key is high, thus improve alkali resistance.
But, find out from common bisphenol-A epoxy resin structural, epoxy radicals only on end group,
Therefore film crosslink density is low, has a good pliability, but chemical-resistant, heat-resisting quantity
Relatively poor.So this is improved by the present invention.
Therefore, more than the present inventor uses on the architecture basics of bisphenol A epoxide resin
Described many phenolic epoxy resin modification, containing having more than 2 on this kind of modified each molecule of resin
Epoxy radicals, be the epoxy resin of polyfunctionality, so its reactivity is very strong, crosslink density is big,
The film making coating has thermostability, chemical resistance and the highest vitrification point of excellence
TgAnd hardness.
According to the present invention, wherein, described esters of acrylic acid levelling agent is interpolation commonly used in the art
Agent, such as the polyacrylate flow agent of silicon dioxide absorption.According to one embodiment of the present invention
Formula, described esters of acrylic acid levelling agent can use commercially available product known in the art, as
GLP588 (purchased from South Sea chemistry), GLP788 (purchased from South Sea chemistry) etc., but the present invention
It is not limited to that.
According to the present invention, wherein, described polyester resin is additive commonly used in the art, as full
And terminal carboxyl polyester resin, it can include mixed type 5:5 curable epoxide polyester etc., such as, city
Sell available 5900 (purchased from Hangzhou Zhong Fa companies) etc., but the present invention is not limited to this.
According to the present invention, wherein, described pigment is pigment commonly used in the art, it may include: carbon
Huang black, middle, iron oxide red etc., particular type arbitrarily can regulate according to required product colour.Example
As 4180 iron oxide reds, 4130 iron oxide reds, MA100 carbon black, medium chrome yellow etc. can be used.
According to the present invention, described barium sulfate is filler, wherein it is preferred to, described barium sulfate can
Coupling agent (such as amide groups silane, vinyl silanes, epoxy radicals silicone hydride etc.) is used to process modification,
Particularly as follows: control temperature is at 80-90 DEG C, barium sulfate and coupling agent are pressed the weight of 99:1-98:2
Ratio mixed at high speed 40-50 minute, naturally cools to room temperature, then stands 24 hours.Institute
Stating coupling agent is a kind of bifunctional molecule, and after process, coupling agent molecule one end is reacted with filler,
Can react with epoxy resin, such that the whole coating after Zhuan Yin is more stepped up after the other end
Thickly it is combined into an entirety, further increases the compactness of coating and the attachment to substrate
The stripping of power, beneficially transfer paper, and reduce water absorption, enhance salt spray resistance ability.
According to the present invention, wherein, described wetting enhancer is additive commonly used in the art, as
Powdery paints additive based on acrylate copolymer.An enforcement according to the present invention
Mode, described wetting enhancer can use commercially available product known in the art, as
BLC701 (purchased from South Sea chemistry), BLC701B (purchased from South Sea chemistry) etc., but the present invention
It is not limited to that.
Additionally, in order to accelerate described transfer coating curing reaction speed in the curing process, have
Necessity suitably adds curing accelerator, to avoid coating in the curing process due to hardening time
Shorten or furnace temperature is on the low side, thus cause the halfway situation of curing reaction.The solidification of the present invention promotees
Entering agent is additive commonly used in the art, and it can have ring amidine chemical constitution.According to the present invention's
One embodiment, described curing accelerator can use product known in the art, such as JG803A
(purchased from South Sea chemistry) etc., but the present invention is not limited to this.
According to another aspect of the present invention, it is provided that the preparation side of a kind of described thermal transfer coating
Method, comprises the following steps:
(1) premix: each component of precise, and put in premixed device, it is sufficiently mixed；
(2) extrusion: utilize extruder to make the mixture of each component described uniformly across logical
There is the in blocks to roller extruding of cooling water (5 DEG C to 8 DEG C)；(wherein said extruder is twin screw
Extruder, such as, model is SLJ-58D, and manufacturer is east, the Yantai limited public affairs of brightness powder apparatus
Department)
(3) grind: by the material coarse crushing equably of extrusion, it is ensured that the size of broken tablet
Similar, broken material slice lapping is become powder body the most again, thus prepares the thermal transfer coating of the present invention.
Wherein, in step (1), incorporation time is about 4-6 minute.
Wherein, in step (2), described extruder temperature is set to a district: 90-100 DEG C,
2nd district: 110-120 DEG C.
Wherein, in step (3), the size of described powder body is 180 mesh.
Wherein, in grinding steps, by the mensuration of Granularity Distribution, corresponding adjustment is each
Individual device parameter, product is every after the assay was approved, weighs, packs and paste the quality certification.
[beneficial effect]
1, moderate gel time and hardening time, the coating of generation has excellent inherent matter
Amount, the overburden ratio of transfer paper is easier to, and the clean mark of the pattern of transfer.
2, the coating generated has higher vitrification point Tg, crosslink density is high, can be relatively
Play the effect of protection pattern in big temperature range, there is long-effective corrosion effect.Additionally can prevent
Only foreign material adhere to, deposit, and reduce regular maintenance cleaning.
3, the coating generated is fine and close, tough and tensile, wear-resisting, has good resistance to impact, pliable and tough
Property and cohesive force, can resist construction in external force destroy, there is the service life of more than 10 years.
4, the production craft step of described coating is simple, with low cost, and production efficiency is high.
Detailed description of the invention
Hereinafter, will the present invention be further illustrated with, implementation below in conjunction with the embodiments
Only the present invention is described by way of example.But these embodiments are not meant to the present invention in addition
Any restriction.It is obvious that those of ordinary skill in the art can in the scope of the present invention and essence,
The present invention is carried out various accommodation and amendment.It is to be understood that the present invention is further included in
Other equivalent technologies in the range of description and claims of this specification or modification.
Reagent source
Modified epoxy: (purchased from triumph circumference)；Esters of acrylic acid levelling agent: GLP588
(purchased from South Sea chemistry), GLP788 (purchased from South Sea chemistry)；Polyester resin: 5900 (purchase
From Hangzhou Zhong Fa company)；Pigment: 4180 iron oxide reds (purchased from Beyer Co., Ltd)；Barium sulfate (is purchased
From Fuping, Shaanxi chemical industry)；Titanium dioxide (purchased from Henan Yu Xing company)；Wetting enhancer: BLC701
(purchased from South Sea chemistry), BLC701B (purchased from South Sea chemistry)；Benzoin is (purchased from Hubei Lay
This)；Curing accelerator: JG803A (purchased from South Sea chemistry).
Embodiment 1
(1) each component of thermal transfer coating is weighed by following weight:
Said components is put in premixed device, be sufficiently mixed 4-6 minute；
(2) extrusion: the temperature of double screw extruder is set as a district: 95 DEG C, 2nd district:
120 DEG C, the mixture of each component described is made to be connected with cooling water (5 DEG C-8 DEG C) uniformly
To roller extruding in flakes；
(3) grind: by the material coarse crushing equably of extrusion, it is ensured that the size of broken tablet
Similar, the most again by broken material slice lapping and by the powder of 180 eye mesh screens, thus prepare root
Thermal transfer coating according to the present invention.
Embodiment 2
(1) each component of thermal transfer coating is weighed by following weight:
Said components is put in premixed device, be sufficiently mixed 4-6 minute；
(2) extrusion: the temperature of double screw extruder is set as a district: 95 DEG C, 2nd district:
120 DEG C, the mixture of each component described is made to be connected with cooling water (5 DEG C-8 DEG C) uniformly
To roller extruding in flakes；
(3) grind: by the material coarse crushing equably of extrusion, it is ensured that the size of broken tablet
Similar, the most again by broken material slice lapping and by the powder of 180 eye mesh screens, thus prepare root
Thermal transfer coating according to the present invention.
Wherein, barium sulfate uses coupling agent treatment modified, is specially and controls temperature at 80-90 DEG C,
Barium sulfate and coupling agent (amide groups silane) are pressed the weight ratio mixed at high speed 30 minutes of 99:1,
Naturally cool to room temperature, then stand 24 hours.
Comparative example 1
(1) each component of thermal transfer coating is weighed by following weight:
Said components is put in premixed device, be sufficiently mixed 4-6 minute；
(2) extrusion: the temperature of double screw extruder is set as a district: 95 DEG C, 2nd district:
120 DEG C, the mixture of each component described is made to be connected with cooling water (5 DEG C-8 DEG C) uniformly
To roller extruding in flakes；
(3) grind: by the material coarse crushing equably of extrusion, it is ensured that the size of broken tablet
Similar, the most again by broken material slice lapping and by the powder of 180 eye mesh screens, thus prepare heat
Transfer coating.
Comparative example 2
Said components is put in premixed device, be sufficiently mixed 4-6 minute；
(2) extrusion: the temperature of double screw extruder is set as a district: 95 DEG C, 2nd district:
120 DEG C, the mixture of each component described is made to be connected with cooling water (5 DEG C-8 DEG C) uniformly
To roller extruding in flakes；
(3) grind: by the material coarse crushing equably of extrusion, it is ensured that the size of broken tablet
Similar, the most again by broken material slice lapping and by the powder of 180 eye mesh screens, thus prepare heat
Transfer coating.
EXPERIMENTAL EXAMPLE
Performance test methods and test result:
EXPERIMENTAL EXAMPLE 1
By thermal transfer coating prepared in embodiments of the invention 1 at the baking box that temperature is 200 DEG C
Interior solidification 10 minutes, the product of the coating formed parameters obtained after tested is:
Impact strength (GB GB/T 1732): square impact 50kg/cm, recoil 50kg/cm, light
Pool degree (GB GB/T 9754): 86%+2%, bends (GB GB/T 6742): 2mm,
Pencil hardness (GB GB/T 6739): 2H, adhesive force ((GB GB/T 9286): 2mm,
Water boiling resistance (GB GB/T 1740): coating was unchanged in 2 hours.
The model that this product prepares is carried out thermal transfer (transfer interpreter design temperature is 190 DEG C) 5
Minute, taking out after model, transfer paper can easily be torn, the model transfer clean mark that obtains,
Full color.
EXPERIMENTAL EXAMPLE 2
By thermal transfer coating prepared in embodiments of the invention 2 at the baking box that temperature is 200 DEG C
Interior solidification 10 minutes, the product of the coating formed parameters obtained after tested is:
Impact strength (GB GB/T 1732): square impact 50kg/cm, recoil 40kg/cm, light
Pool degree (GB GB/T 9754): 82%+2%, bends (GB GB/T 6742): 2mm,
Pencil hardness (GB GB/T 6739): 2H, adhesive force ((GB GB/T 9286): 3mm,
Water boiling resistance (GB GB/T 1740): coating was unchanged in 2 hours.
The model that this product prepares is carried out thermal transfer (transfer interpreter design temperature is 190 DEG C) 5
Minute, after taking out model, transfer paper can be torn, the model transfer texture definition ratio obtained
Embodiment 1 is slightly worse, and specimen surface leaves over offset printing phenomenon without transfer paper.
EXPERIMENTAL EXAMPLE 3
It is 200 DEG C by the thermal transfer coating for preparing in the comparative example 1 of the present invention in temperature
Solidification 10 minutes in baking box, the product parameters of the coating formed is:
Impact strength (GB GB/T 1732): square impact 50kg/cm, recoil 40kg/cm, light
Pool degree (GB GB/T 9754): 84%+2%, bends (GB GB/T 6742): 4mm,
Pencil hardness (GB GB/T 6739): 2H, adhesive force ((GB GB/T 9286): 3mm,
Water boiling resistance (GB GB/T 1740): coating had slight change in 2 hours.
The model that this product prepares is carried out thermal transfer (transfer interpreter design temperature is 190 DEG C) 5
Minute, after taking out model, transfer paper can be torn, and the model transfer texture obtained obscures, and
And specimen surface has transfer paper leave over offset printing and have a little sticky paper phenomenon.
EXPERIMENTAL EXAMPLE 4
It is 200 DEG C by the thermal transfer coating for preparing in the comparative example 2 of the present invention in temperature
Solidification 10 minutes in baking box, the product of the coating formed parameters obtained after tested is:
Impact strength (GB GB/T 1732): square impact 50kg/cm, recoil 50kg/cm, light
Pool degree (GB GB/T 9754): 86%+2%, bends (GB GB/T 6742): 2mm,
Pencil hardness (GB GB/T 6739): 2H, adhesive force ((GB GB/T 9286): 2mm,
Water boiling resistance (GB GB/T 1740): coating had slight change in 2 hours.
The model that this product prepares is carried out thermal transfer (transfer interpreter design temperature is 190 DEG C) 5
Minute, after taking out model, transfer paper can be torn, the model transfer clean mark obtained, but
It is that specimen surface has sticky paper phenomenon.
Claims (10)
1. a thermal transfer coating, comprises the component of following weight portion:
Wherein, described modified epoxy is many phenolic modified epoxy, and its molecular structure is as follows:
Wherein, n is the integer of 1 to 7.
Thermal transfer coating the most according to claim 1, wherein, described esters of acrylic acid levelling agent is
The polyacrylate flow agent of silicon dioxide absorption.
Thermal transfer coating the most according to claim 1, wherein, described polyester resin includes mixed type
5:5 curable epoxide polyester.
Thermal transfer coating the most according to claim 1, wherein, described barium sulfate uses at coupling agent
Reason modification.
Thermal transfer coating the most according to claim 4, wherein, described coupling agent be amide groups silane,
Vinyl silanes or epoxy radicals silicone hydride.
6. according to the thermal transfer coating described in claim 4 or 5, wherein, the described process processing modification
For:
Barium sulfate, at 80-90 DEG C, is mixed by the weight ratio of 99:1-98:2 by control temperature with described coupling agent
40-50 minute, naturally cool to room temperature, then stand 24 hours.
7. a preparation method for the thermal transfer coating described in claim 1, comprises the following steps:
(1) premix: each component of precise, and put in premixed device, it is sufficiently mixed；
(2) extrusion: utilize double screw extruder to make the mixture of each component described uniformly across being connected with
Cooling water roller is extruded in flakes；
(3) grind: by the material coarse crushing equably of extrusion, it is ensured that the size of broken tablet is similar, so
After broken material slice lapping is become powder body again, thus prepare described thermal transfer coating.
Preparation method the most according to claim 7, wherein, in step (1), incorporation time is
4-6 minute.
Preparation method the most according to claim 7, wherein, in step (2), described twin screw
Extruder temperature is set to a district: 90-100 DEG C, 2nd district: 110-120 DEG C.
Preparation method the most according to claim 7, wherein, in step (3), described powder body
A size of 180 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610301625.0A CN105926355B (en) | 2016-05-09 | 2016-05-09 | Thermal transfer printing coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610301625.0A CN105926355B (en) | 2016-05-09 | 2016-05-09 | Thermal transfer printing coating and preparation method thereof |
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| CN105926355A true CN105926355A (en) | 2016-09-07 |
| CN105926355B CN105926355B (en) | 2019-01-04 |
Family
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Citations (6)
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|---|---|---|---|---|
| US5212263A (en) * | 1991-01-10 | 1993-05-18 | Morton International, Inc. | Textured epoxy powder coating |
| CN101925627A (en) * | 2008-01-23 | 2010-12-22 | 陶氏环球技术公司 | Epoxy resin hardener composition and contain the composition epoxy resin of such hardener composition |
| CN103146286A (en) * | 2012-12-27 | 2013-06-12 | 上海海隆赛能新材料有限公司 | Fast cured epoxy powder coating composition and preparation method thereof |
| CN104356916A (en) * | 2014-11-21 | 2015-02-18 | 广东华江粉末科技有限公司 | High-gloss polyurethane heat transfer printing powder paint for aluminium profile and preparation method thereof |
| CN104497808A (en) * | 2014-12-31 | 2015-04-08 | 山东朗法博粉末涂装科技有限公司 | Powder coating for MDF transfer printing and application method of powder coating |
| CN105038515A (en) * | 2015-09-07 | 2015-11-11 | 福建万安实业有限公司 | Pure-copper-imitated anti-corrosion powder coating |
-
2016
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|---|---|---|---|---|
| US5212263A (en) * | 1991-01-10 | 1993-05-18 | Morton International, Inc. | Textured epoxy powder coating |
| CN101925627A (en) * | 2008-01-23 | 2010-12-22 | 陶氏环球技术公司 | Epoxy resin hardener composition and contain the composition epoxy resin of such hardener composition |
| CN103146286A (en) * | 2012-12-27 | 2013-06-12 | 上海海隆赛能新材料有限公司 | Fast cured epoxy powder coating composition and preparation method thereof |
| CN104356916A (en) * | 2014-11-21 | 2015-02-18 | 广东华江粉末科技有限公司 | High-gloss polyurethane heat transfer printing powder paint for aluminium profile and preparation method thereof |
| CN104497808A (en) * | 2014-12-31 | 2015-04-08 | 山东朗法博粉末涂装科技有限公司 | Powder coating for MDF transfer printing and application method of powder coating |
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Address after: 065000 north of Tun Village, Tong Wan Road, Guangyang District, Langfang, Hebei Patentee after: Langfang Yalong Sanhui Technology Co.,Ltd. Address before: 065000 north of Tun Village, Tong Wan Road, Guangyang District, Langfang, Hebei Patentee before: LANGFANG YALONG SANHUI TECHNOLOGY CO.,LTD. |