CN102634269B - Wood grain powder coating for aluminum profile and preparation method of wood grain powder coating - Google Patents
Wood grain powder coating for aluminum profile and preparation method of wood grain powder coating Download PDFInfo
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- CN102634269B CN102634269B CN201210129435.7A CN201210129435A CN102634269B CN 102634269 B CN102634269 B CN 102634269B CN 201210129435 A CN201210129435 A CN 201210129435A CN 102634269 B CN102634269 B CN 102634269B
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Abstract
The invention discloses wood grain powder coating for aluminum profile. The wood grain powder coating is prepared from the following raw materials in percentage by weight: 45-50% of saturated terminal carboxyl polyester resin, 3-4% of beta-hydroxyalkylamide, 0.6-0.7% of titanium dioxide, 39-42% of precipitated barium sulfate, 0.8-1.2% of brightening agent, 0.8-1.2% of flatting agent, 0.3-0.4% of transfer agent, 0.4-0.5% of polyethylene wax, 1.0-1.2% of everbright fast yellow, 2.0-2.5% of iron oxide red, 1.0-1.3% of everbright fast red and 0.5-0.7% of pigment carbon black. The invention also discloses a preparation method of the powder coating, which comprises five steps of: pre-mixing, melt extrusion, cooling, breaking and micro-fine crushing. When in use, the powder disclosed by the invention has obvious characteristics of low curing temperature, environment friendliness, no toxicity and the like.
Description
Technical field
The present invention relates to a kind of powder coating, particularly a kind of powder coating for aluminium section bar and preparation method thereof.
Background technology
Traditional finishing material majority is woodwork, plastics and aluminium wood composite material products, expends natural timber and non-renewable petroleum resources in a large number.Along with continuous progress and the innovation of science and technology, in recent years market there is a kind of novel finishing material---surface is processed to form the aluminium section bar with wood grain effect through powder coating.This material product appearance effect is close to woodwork, create an aesthetic feeling, alternative woodwork, plastics and aluminium wood composite material products, also there is the advantages such as sturdy and durable, not yielding, insulation, noise insulation, antidetonation, overcome poor, the yielding and easy shortcoming such as aging of traditional decoration material fire resistance.Now be widely used in the aspects such as building doors and windows, banister, furniture and office appliance, this material product Application Areas is constantly expanding, and thus, the production and preparation of wood grain powder coating is also correspondingly developed and grows.
Wood grain powder paint at aluminium shape surface and film-forming, is processed by Thermal-printing Technology after sticking woodgrained paper, is made aluminium section bar obtain the film coated surface of similar wood grain effect.In powder coating solidification process, curing apparatus needs to keep the constant of solidification value for a long time, and existing powder coating solidification temperature is generally more than 200 DEG C, and the energy consumption of curing apparatus is large, add the production cost that surface has wood grain effect aluminium section bar, be unfavorable for the use of wood grain powder coating.
In addition, the conventional curing agents TGIC used in existing powder coating can discharge toxic substance in the curing process, causes the actual bodily harm of direct labor, particularly the injury of skin aspect.Therefore, the formula combination of existing powder coating and production technique also exist great room for improvement.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the aluminium section bar wood grain powder coating that when providing a kind of use, solidification value is low, environment-protecting asepsis, production cost are low.
In order to achieve the above object, the present invention adopts following technical scheme: a kind of aluminium section bar wood grain powder coating, is characterized in that, it is prepared by the starting material of following weight per-cent, and concrete formula is:
More particularly, described brightening agent is acrylic acid esters co-polymer.
Described flow agent is polyacrylic ester.
Described transfer printing agent is acylamide polymer.
The weight ratio of described saturated terminal carboxyl polyester resin and described beta-hydroxy alkylamide is: 93: 7.
The preparation method of above-mentioned aluminium section bar wood grain powder coating, is characterized in that, comprise the following steps:
The starting material of following formula are dropped into pre-mixing in compounding jar by the first step together, and the pre-mixing time is generally 3-4 minute and can mixes:
Starting material after pre-mixing are heated to melting and extrude be pressed into sheet stock by second step;
3rd step, carry out fragmentation after sheet stock being cooled at ambient pressure room temperature, fine powder is broken into powder coating more afterwards.
More particularly, being heated to melting and extruding in described second step refers to that to carry out melting mixing with twin screw extruder to the starting material after pre-mixing dispersed and extrude, wherein, forcing machine I district temperature is 115 ~ 125 DEG C, and the temperature in forcing machine II district is 105 ~ 115 DEG C.
Fine pulverizing in described 3rd step refers to that being crushed to powder diameter is 20 ~ 80 microns.
Fine pulverizing in described 3rd step refer to ACM mill carry out stage reduction.
The 4th step can also be comprised: sieved by standard sieve used for powder coating after described 3rd step.
The present invention possesses following outstanding advantages and effect relative to prior art:
1, adopt in the present invention's formula there is new polyester resin and the solidifying agent of energy-conserving and environment-protective unusual effect, the powder coating that during use, the present invention makes can under the temperature condition of 160 DEG C film-forming, reduce solidification value about 40 DEG C than original powder coating; In the curing process, equipment energy consumption greatly reduces, and energy-saving effect is remarkable;
Saturated terminal carboxyl polyester resin in the present invention's formula and solidifying agent beta-hydroxy alkylamide react when solidifying, and its mechanism is:
Terminal carboxyl polyester resin, its acid number is 30-50mgKOH/g, solidifying agent beta-hydroxy alkylamide is the amide compound with 4 active hydroxyl groups, conventional solidified dose of TGIC is high for specific activity, so energy solidification value is lower than conventional powder coatings, namely polyester and solidifying agent 160 DEG C, there is polycondensation and form insoluble molten net high-polymer film in 10-15 minute, produce low molecular compound water simultaneously;
2, solidifying agent of the present invention adopts beta-hydroxy alkylamide, because beta-hydroxy alkylamide can not discharge toxic substance as conventional solidified dose of TGIC, so can not to HUMAN HEALTH and environmental effects;
3, add polyethylene wax powder, the film that the powder coating that the present invention makes obtains after overcuring in the present invention's formula, surface hardness improves, and has smooth feel, makes film not sticky paper after hot transfer printing, improves significantly to paper-tear picture effect.
Accompanying drawing explanation
Fig. 1 is the process flow sheet preparing powder coating of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
The powder coating preparation process of following examples as shown in Figure 1.
Embodiment one
Prepare aluminium section bar wood grain powder coating in the steps below:
The first step, by even for the starting material pre-mixing of following formula:
Wherein, the acrylic acid esters co-polymer that brightening agent adopts Fenghua Nanhai Pharmaceutical Chemistry Group Corp., Ltd. to sell, the polyacrylic ester that flow agent adopts Fenghua Nanhai Pharmaceutical Chemistry Group Corp., Ltd. to sell, transfer printing agent adopts Hubei to carry out the acylamide polymer of this new chemical materials company limited sale;
Second step, be heated to melting mixing with twin screw extruder to the starting material after pre-mixing evenly dispersed, carried out melt extruding and being pressed into sheet stock by the starting material after pre-mixing, forcing machine I district temperature is 115 DEG C, and the temperature in forcing machine II district is 115 DEG C; The SHJ series extruders that twin screw extruder adopts Nanjing Jin Ji mechanical means company limited to produce;
3rd step, carry out fragmentation after being cooled by sheet stock, fine powder is broken into powder coating more afterwards;
4th step, sieves standard sieve used for powder coating.
Obtained powder coating is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4-2008).
As can be seen here, powder coating of the present invention is used can to meet the requirement sprayed for aluminium shape surface.
Embodiment two
Prepare aluminium section bar wood grain powder coating in the steps below:
The first step, the starting material pre-mixing by following formula:
Wherein, the acrylic acid esters co-polymer that brightening agent adopts Guangdong Dazhi Environmental Protection Technology Co., Ltd. to sell, the polyacrylic ester that flow agent adopts the sub-Chemical Co., Ltd. of Shanghai Songyuan to sell, the transfer powder that transfer printing agent adopts Mount Huang Hui Jiu powdered material company limited to sell;
Second step, carry out melting mixing with twin screw extruder to the starting material after pre-mixing dispersed, carried out melt extruding and being pressed into sheet stock by the starting material after pre-mixing, forcing machine I district temperature is 125 DEG C, and the temperature in forcing machine II district is 108 DEG C;
3rd step, carry out fragmentation after being cooled by sheet stock, fine powder is broken into powder coating more afterwards;
4th step, sieves standard sieve used for powder coating.
Obtained powder coating is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4-2008).
Embodiment three
Prepare aluminium section bar wood grain powder coating in the steps below:
The first step, the starting material pre-mixing by following formula:
Wherein, the acrylic acid esters co-polymer that brightening agent adopts two new-type chemical plant of water, Jiangmen city Xinhui District to sell, the polyacrylic ester that flow agent adopts Dongguan City Bo Cheng Chemical Co., Ltd. to sell, transfer printing agent adopts the transfer powder of Wuhan Bo Zhengchenggong Science and Technology Ltd.;
Second step, carry out melting mixing with twin screw extruder to the starting material after pre-mixing dispersed, carried out melt extruding and being pressed into sheet stock by the starting material after pre-mixing, forcing machine I district temperature is 120 DEG C, and the temperature in forcing machine II district is 105 DEG C;
3rd step, carry out fragmentation after being cooled by sheet stock, fine powder is broken into powder coating more afterwards;
4th step, sieves standard sieve used for powder coating.
Obtained powder coating is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4-2008).
Embodiment four
Prepare aluminium section bar wood grain powder coating in the steps below:
The first step, by even for the starting material pre-mixing of following formula:
Wherein, the acrylic acid esters co-polymer that brightening agent adopts two new-type chemical plant of water, Jiangmen city Xinhui District to sell, the polyacrylic ester that flow agent adopts two new-type chemical plant of water, Jiangmen city Xinhui District to sell, the transfer powder that transfer printing agent adopts Mount Huang Hui Jiu powdered material company limited to sell;
Second step, be heated to melting mixing with twin screw extruder to the starting material after pre-mixing evenly dispersed, carried out melt extruding and being pressed into sheet stock by the starting material after pre-mixing, forcing machine I district temperature is 115 DEG C, and the temperature in forcing machine II district is 115 DEG C;
3rd step, carry out fragmentation after being cooled by sheet stock, fine powder is broken into powder coating more afterwards;
4th step, sieves standard sieve used for powder coating.
Obtained powder coating is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4-2008).
Embodiment five
Prepare aluminium section bar wood grain powder coating in the steps below:
The first step, the starting material pre-mixing by following formula:
Wherein, the acrylic acid esters co-polymer that brightening agent adopts Fenghua Nanhai Pharmaceutical Chemistry Group Corp., Ltd. to sell, the polyacrylic ester that flow agent adopts Fenghua Nanhai Pharmaceutical Chemistry Group Corp., Ltd. to sell, transfer printing agent adopts Hubei to carry out the acylamide polymer of this new chemical materials company limited sale;
Second step, carry out melting mixing with twin screw extruder to the starting material after pre-mixing dispersed, carried out melt extruding and being pressed into sheet stock by the starting material after pre-mixing, forcing machine I district temperature is 125 DEG C, and the temperature in forcing machine II district is 108 DEG C;
3rd step, carry out fragmentation after being cooled by sheet stock, fine powder is broken into powder coating more afterwards;
4th step, sieves standard sieve used for powder coating.
Obtained powder coating is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4-2008).
Embodiment six
Prepare aluminium section bar wood grain powder coating in the steps below:
The first step, the starting material pre-mixing by following formula:
Wherein, the acrylic acid esters co-polymer that brightening agent adopts two new-type chemical plant of water, Jiangmen city Xinhui District to sell, the polyacrylic ester that flow agent adopts two new-type chemical plant of water, Jiangmen city Xinhui District to sell, transfer printing agent adopts Hubei to carry out the acylamide polymer of this new chemical materials company limited sale;
Second step, carry out melting mixing with twin screw extruder to the starting material after pre-mixing dispersed, carried out melt extruding and being pressed into sheet stock by the starting material after pre-mixing, forcing machine I district temperature is 120 DEG C, and the temperature in forcing machine II district is 105 DEG C;
3rd step, carry out fragmentation after being cooled by sheet stock, fine powder is broken into powder coating more afterwards;
4th step, sieves standard sieve used for powder coating.
Obtained powder coating is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4-2008).
Embodiment seven
Prepare aluminium section bar wood grain powder coating in the steps below:
The first step, the starting material pre-mixing by following formula:
Wherein, the acrylic acid esters co-polymer that brightening agent adopts Fenghua Nanhai Pharmaceutical Chemistry Group Corp., Ltd. to sell, the polyacrylic ester that flow agent adopts Fenghua Nanhai Pharmaceutical Chemistry Group Corp., Ltd. to sell, transfer printing agent adopts Hubei to carry out the acylamide polymer of this new chemical materials company limited sale;
Second step, carry out melting mixing with twin screw extruder to the starting material after pre-mixing dispersed, carried out melt extruding and being pressed into sheet stock by the starting material after pre-mixing, forcing machine I district temperature is 122 DEG C, and the temperature in forcing machine II district is 108 DEG C;
3rd step, carry out fragmentation after being cooled by sheet stock, fine powder is broken into powder coating more afterwards;
4th step, sieves standard sieve used for powder coating.
Obtained powder coating is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4-2008).
Embodiment eight
Prepare aluminium section bar wood grain powder coating in the steps below:
The first step, the starting material pre-mixing by following formula:
Wherein, the acrylic acid esters co-polymer that brightening agent adopts Fenghua Nanhai Pharmaceutical Chemistry Group Corp., Ltd. to sell, the polyacrylic ester that flow agent adopts Fenghua Nanhai Pharmaceutical Chemistry Group Corp., Ltd. to sell, transfer printing agent adopts Hubei to carry out the acylamide polymer of this new chemical materials company limited sale;
Second step, carry out melting mixing with twin screw extruder to the starting material after pre-mixing dispersed, carried out melt extruding and being pressed into sheet stock by the starting material after pre-mixing, forcing machine I district temperature is 120 DEG C, and the temperature in forcing machine II district is 105 DEG C;
3rd step, carry out fragmentation after being cooled by sheet stock, fine powder is broken into powder coating more afterwards;
4th step, sieves standard sieve used for powder coating.
Obtained powder coating is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4-2008).
Embodiment nine
Prepare aluminium section bar wood grain powder coating in the steps below:
The first step, the starting material pre-mixing by following formula:
Wherein, the acrylic acid esters co-polymer that brightening agent adopts two new-type chemical plant of water, Jiangmen city Xinhui District to sell, the polyacrylic ester that flow agent adopts Dongguan City Bo Cheng Chemical Co., Ltd. to sell, transfer printing agent adopts the transfer powder of Wuhan Bo Zhengchenggong Science and Technology Ltd.;
Second step, carry out melting mixing with twin screw extruder to the starting material after pre-mixing dispersed, carried out melt extruding and being pressed into sheet stock by the starting material after pre-mixing, forcing machine I district temperature is 120 DEG C, and the temperature in forcing machine II district is 105 DEG C;
3rd step, carry out fragmentation after being cooled by sheet stock, fine powder is broken into powder coating more afterwards;
4th step, sieves standard sieve used for powder coating.
Obtained powder coating is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4-2008).
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. an aluminium section bar wood grain powder coating, is characterized in that, it is prepared by the starting material of following weight per-cent, and concrete formula is:
The weight ratio of described saturated terminal carboxyl polyester resin and described beta-hydroxy alkylamide is: 93:7;
Described transfer printing agent is amide polymer.
2. aluminium section bar wood grain powder coating according to claim 1, it is characterized in that, described brightening agent is acrylate copolymer.
3. aluminium section bar wood grain powder coating according to claim 1, it is characterized in that, described flow agent is polyacrylic ester.
4. an aluminium section bar preparation method for wood grain powder coating, is characterized in that, comprise the following steps:
The starting material of following formula are dropped into pre-mixing in compounding jar by the first step together:
Starting material after pre-mixing are heated to melting and extrude be pressed into sheet stock by second step;
3rd step, carry out fragmentation after sheet stock being cooled at ambient pressure room temperature, fine powder is broken into powder coating more afterwards;
Being heated to melting and extruding in described second step refers to that to carry out melting mixing with twin screw extruder to the starting material after pre-mixing dispersed and extrude, and wherein, forcing machine I district temperature is 115 ~ 125 DEG C, and the temperature in forcing machine II district is 105 ~ 115 DEG C.
5. the preparation method of aluminium section bar wood grain powder coating according to claim 4, is characterized in that: the fine pulverizing in described 3rd step refers to that being crushed to powder diameter is 20 ~ 80 microns.
6. the preparation method of aluminium section bar wood grain powder coating according to claim 4, is characterized in that: the fine pulverizing in described 3rd step refer to ACM mill carry out stage reduction.
7. the preparation method of aluminium section bar wood grain powder coating according to claim 4, is characterized in that: after described 3rd step, also comprise the 4th step: sieved by standard sieve used for powder coating.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102775886B (en) * | 2012-08-22 | 2014-10-29 | 广东华江粉末科技有限公司 | Thermal-insulation powder coating for aluminum profiles as well as preparation method and application thereof |
| CN103409045A (en) * | 2013-08-20 | 2013-11-27 | 成都桑瑞斯粉末涂料有限公司 | Powder coating capable of replacing aluminium alloy chromating and preparation method thereof |
| CN105838200A (en) * | 2016-04-07 | 2016-08-10 | 太仓吉达喷涂有限公司 | Nano-modified wear-resistant powdery coating used for aluminum sections |
| CN105728302A (en) * | 2016-04-07 | 2016-07-06 | 太仓吉达喷涂有限公司 | Method for electrostatic spraying of powder coating on surface of aluminum profile |
| CN107099179A (en) * | 2017-03-31 | 2017-08-29 | 佛山市涂亿装饰材料科技有限公司 | A kind of production technology of imitative silicified wood crystal wood grain powder coating product |
| CN108070314A (en) * | 2017-12-29 | 2018-05-25 | 安徽鑫发铝业有限公司 | A kind of corrosion-resistant transfer printing wood grain aluminium section bar |
| CN112048236A (en) * | 2020-09-09 | 2020-12-08 | 黄山佳杰新材料科技有限公司 | Extinction type thermal transfer powder coating and preparation method and application thereof |
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