CN101665652A - Powder coating with antibacterial function and preparation method and application thereof - Google Patents
Powder coating with antibacterial function and preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a powder coating with an antibacterial function and a preparation method and an application thereof. The powder coating comprises the following raw materials in the parts by weight: 60-90 parts of resin, 2-40 parts of curing agent, 1.5-10 parts of antibacterial agent color concentrate, 0.5-2 parts of flatting agent, 0-4.5 parts of defoaming agent, 4-30 parts of pigments andfillers and 0-15 parts of other auxiliary agents. The powder coating provided by the invention has the functions of bacterium resistance and broad spectrum and has strong functions of sterilizing andinhibiting various bacteria and mould fungi; the heat resistant temperature of the inorganic antibacterial agent can reach 500 DEG C, and the inorganic antibacterial agent has good heat stability; and the inorganic antibacterial agent is a silver ion antibacterial agent using glass as a carrier, has good transparency and can be made into a transparent antibacterial powder coating which has the advantages of safety and wide application range. The preparation method provided by the invention has reasonable processes, strong operability and high qualified rate of the prepared finished products and can realize industrial production in a large batch.
Description
Technical field
The present invention relates to a kind of powder coating, be specifically related to a kind of powder coating and preparation method thereof and in preparation antimicrobial protection decorative coveringn, use with it with antibacterial.
Background technology
The antibacterial of coating realizes by interpolation antiseptic-germicide in coating that mainly antiseptic-germicide mainly contains three major types at present: natural antibacterial agent, organic antibacterial agent and inorganic antiseptic, natural antibacterial agent mainly are the extracts in the animals and plants such as propolis and garlicin; Organic antibacterial agent mainly is with organic acid, phenols, organic compound such as organic amine and isothiazolinone; Inorganic antiseptic is to utilize metal and the immobilized antiseptic-germicides that constitute on various carriers of ion thereof such as copper and zinc, and inorganic antiseptic is divided into metal ion type and metal oxide type two big classes.
F.L. Biocidal powder coating composition and the preparation and the application patent (CN1328331C) of Ku Mingsi invention, the liquid germicide of the organic antibacterial agent class of wherein using is malonamide nitrile and/or liquid thiazine thioketones and dibromo malonamide nitrile.The solid-state biological activity sterilant of wherein using is selected from the solid-state thiazine thioketones of organic antibacterial agent class, thiol phthalic diamide, hydroxybenzoate, nitro propylene glycol, tolyl sulfone and/or phthalonitrile.Rock paddy is kept the germ resistance powder coating (CN1228107A) of invention, has used the electric furnace of this coating and the making method that germ resistance is filmed.The inorganic antiseptic of wherein selecting for use is that thiosulfate anion closes silver complex, and the carrier of antiseptic-germicide is a SiO 2 powder.The chemical structure that used thiosulfate anion closes silver complex is Nax[Agm (S
2O
3) y] z (x, m, y and z are the integers more than 1).The powder coating method for making of protecting in this patent is modulated into the germ resistance powder coating for thiosulfate anion is closed the silver complex load on inorganic powder with resin, by common powdered preparation coating process construction.
Usually the curing that needs high bake to film in the powder coating use, and natural antibacterial agent are as propolis and garlicin etc.Its heat-resistant stability and useful life longevity are poor, should not be as the antimicrobial additive in the powder coating; If adopt organic antibacterial agent, the poor heat stability of organic antibacterial agent in baking powder coating process, and at high temperature organic antibacterial agent volatilizees easily, and operator and surrounding environment are had tangible murder by poisoning and pollution.And inorganic oxide type antiseptic-germicide needs uv irradiating or just can play antibacterial effect under the effect of oxygen and water.
Summary of the invention
Goal of the invention: technical problem to be solved by this invention is to overcome the deficiencies in the prior art; a kind of good dispersity is provided; the powder coating of has a broad antifungal spectrum and environmental protection, low toxicity, another object of the present invention provide the preparation method of this powder coating with antibacterial and it is in the application that is used for preparing the antimicrobial protection decorative coveringn.
Technical scheme: in order to realize above purpose, the powder coating with antibacterial provided by the invention comprises the raw material of following parts by weight:
60～90 parts of resins
2～40 parts in solidifying agent
1.5～10 parts of antiseptic-germicide colour batches
0.5～2 part of flow agent
0～4.5 part of defoamer
4～30 parts of color stuffings
As preferred version, powder coating with antibacterial provided by the invention also can add other auxiliary agent of 0～15 parts by weight, such as wax class matting agent, be used to regulate the gloss of antibacterial powder paint, obtain having the powder coating of various luster, also can add aluminum oxide growth agent auxiliary agent as required.
Powder coating with antibacterial provided by the invention, wherein said resin are the hybrid resin of one or more several resins in vibrin, acrylic resin, fluorocarbon resin, urethane resin, Resins, epoxy, polyester modified epoxy resin or the hydroxy polyester resin.
Powder coating with antibacterial provided by the invention, wherein said antiseptic-germicide colour batch is made with 1: 10 to 3: 10 mixed with resin by inorganic antiseptic.Inorganic antiseptic is made the antiseptic-germicide colour batch with resin earlier with 1: 10 to 3: 10 mixed to be mixed with raw materials such as resin, solidifying agent again, the appearance property of filming that can improve the dispersing property of powder coating greatly and obtain is good, and certain inorganic antiseptic provided by the invention also can directly join to be mixed with in the raw materials such as resin, solidifying agent and obtain.
Above-described inorganic antiseptic is to be carrier with glass, and silver ions is attached to the inorganic antiseptic of forming on the glass carrier, and the inorganic antiseptic heat resisting temperature of making carrier with glass can reach 500 ℃, Heat stability is good; And the silver ion antimicrobial agent that with glass is carrier has the good transparency, can also make transparent powder, attractive in appearance, applied range; And this inorganic antiseptic is a broad spectrum antimicrobicide, all bacteriums and mould all had extremely strong kill, restraining effect, sterilizing rate is greater than 99.99%, and this inorganic antiseptic still has very strong germ resistance behind washing and warm water soaking, therefore, the product for preparing with powder coating provided by the invention can still can keep its antibacterial, and this inorganic antiseptic stable in properties have tight security through washing.
Powder coating with antibacterial provided by the invention, wherein said solidifying agent is isocyanate curing agent, epoxy curing agent, polyurethane curing agent, acrylic resin solidifying agent, polyester resin solidifying agent or hydroxy polyester resin etc., can improve the cross-linking properties of powder coating and be coated with membrane stability after adding solidifying agent, also can play the effect of powder quick coating physical dryness.
Powder coating with antibacterial of the present invention, organic color stuffing such as can coupling red, the thioindigo of color stuffing, anthraquinone or azo or be inorganic color stuffings such as titanium dioxide, ferric oxide, magnesium oxide etc. wherein, the color and the opacifying power of coating can be strengthened after adding color stuffing, and the texture of coating can be strengthened.
Preparation method with powder coating of antibacterial provided by the invention specifically may further comprise the steps:
1. ratio is chosen resin, solidifying agent, antiseptic-germicide colour batch, flow agent, defoamer and color stuffing and is put into mixing tank (1) by weight, then by after forcing machine (2) coextrusion, pass through Blowing stopper (3) cooling again, also can carry freezing air further to cool off, obtain the compressing tablet material with heat exchanger (4);
2. get the compressing tablet material that 1. step obtains, grind, use main grinding machine (6) secondary to pulverize grinding again and obtain fine powder, in the regrind process, can use heat exchanger (4) to carry chilled air cools, obtain fine powder by secondary grinding machine (5) is preliminary;
3. get the fine powder that 2. step obtains, after separating by cyclonic separator (7), sieve by screen cloth (8) again, detect finished product.
Among the wherein above preparation method, the resin of step described in 1. is the hybrid resin of one or more several resins in vibrin, acrylic resin, fluorocarbon resin, urethane resin, Resins, epoxy, polyester modified epoxy resin or the hydroxy polyester resin.
Among the wherein above preparation method, step can also add other auxiliary agents such as aluminum oxide growth agent, wax class matting agent in 1., after mixing with resin, solidifying agent, antiseptic-germicide colour batch, flow agent, defoamer and color stuffing then together coextrusion obtain the compressing tablet material.
To the metal powder coating system, at first the prefabricated colour batch of inorganic antiseptic and metal-powder are carried out nation and decide art breading, nation decides the pre-treating technology that art breading is meant when being heated to powder near second-order transition temperature that again the powder coating that is mixed together with metallic pigment and inorganic antiseptic colour batch is produced.
The application of powder coating in the antimicrobial protection decorative coveringn of other industries such as food mfg, building, electronic product, medical industry, agricultural or material storage art with antibacterial of the present invention.
When the powder coating with antibacterial of the present invention is specifically used, it is clean earlier pre-treatment to be carried out on workpiece or surface, place, spray antibacterial powder paint then, at high temperature heat levelling then, hot setting obtains the Workpiece inspection warehouse-in and then, or provided by the inventionly have the powder coating layer of antibacterial and solidify needing the place to be coated with to spread, play the effect of inhibition and kill bacteria and mould.
Beneficial effect: the powder coating with antibacterial provided by the invention is compared with powder coating of the prior art and is had the following advantages:
1, the powder coating with antibacterial provided by the invention shows through a large amount of experiments, and the proportioning between each raw material composition and the raw material is scientific and reasonable.
2, the powder coating with antibacterial provided by the invention, its anti-microbial activity composition is for being the silver ions inorganic antiseptic of carrier with transparent reticulated structure glass, have has a broad antifungal spectrum, various bacteria and mould are all had extremely strong kill, restraining effect, sterilizing rate is greater than 99.9%.
3, the powder coating with antibacterial provided by the invention has good washability energy, still has very strong germ resistance behind water washing or warm water soaking, stable fine in water, and product can often wash.
4, the powder coating with antibacterial provided by the invention, antiseptic-germicide is for making the silver ions inorganic antiseptic of carrier with glass, and its heat resisting temperature can reach 500 ℃, has good thermostability, can well be applied to the heat curing-type powder technology; And this inorganic antiseptic is that the silver ion antimicrobial agent of carrier has the good transparency with glass, can also make transparent antibacterial powder paint, attractive in appearance, applied range.
5, the powder coating with antibacterial provided by the invention, natural antibacterial agent and organic antibacterial agent have been overcome to thermally labile, the shortcoming of easy inactivation, it is volatile also to have overcome organic antibacterial agent high temperature, have the shortcoming of toxic action to environment with to the people, the powder coating with antibacterial provided by the invention is that a kind of stable in properties, weathering resistance are good, the powder coating of good corrosion resistance, safety, environmental protection, applied range.
6, the preparation method with powder coating of antibacterial provided by the invention, technology is reasonable, and is workable, the production efficiency height, energy consumption is low, and the product qualified rate height for preparing can be realized industrialized production.
Description of drawings
Accompanying drawing is the preparation route map with antibacterial powder coating of the present invention.
Embodiment:
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment only is used to the present invention is described and is not used in and limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
1, the parts by weight proportioning that has the powder coating of antibacterial:
93 parts in vibrin
7 parts of polyester resin solidifying agents
6 parts of antiseptic-germicide colour batches
2 parts of flow agents
4.5 parts of defoamers
30 parts of color stuffings
2, the preparation that has the powder coating of antibacterial:
1. choose vibrin, polyester resin solidifying agent, antiseptic-germicide colour batch, flow agent, defoamer and color stuffing by above 1 described parts by weight and put into mixing tank (1), then by after forcing machine (2) coextrusion, pass through Blowing stopper (3) cooling again, also can carry freezing air further to cool off, obtain the compressing tablet material with heat exchanger (4);
2. get the compressing tablet material that 1. step obtains, grind, use main grinding machine (6) secondary to pulverize grinding again and obtain fine powder, in the regrind process, can use heat exchanger (4) to carry chilled air cools, obtain fine powder by secondary grinding machine (5) is preliminary;
3. get the fine powder that 2. step obtains, after separating by cyclonic separator (7), sieve by screen cloth (8) again, detect finished product.(lot number 01).
1, the parts by weight proportioning that has the powder coating of antibacterial:
20 parts of fluorocarbon resins
40 parts of acrylic resins
12 parts of isocyanate curing agents
2 parts of antiseptic-germicide colour batches
0.5 part of flow agent
1 part of defoamer
4 parts of color stuffings
2, the preparation that has the powder coating of antibacterial:
1. choose resin, solidifying agent, antiseptic-germicide colour batch, flow agent, defoamer and color stuffing by above 1 described parts by weight and put into mixing tank (1), then by after forcing machine (2) coextrusion, pass through Blowing stopper (3) cooling again, also can carry freezing air further to cool off, obtain the compressing tablet material with heat exchanger (4);
2. get the compressing tablet material that 1. step obtains, grind, use main grinding machine (6) secondary to pulverize grinding again and obtain fine powder, in the regrind process, can use heat exchanger (4) to carry chilled air cools, obtain fine powder by secondary grinding machine (5) is preliminary;
3. get the fine powder that 2. step obtains, after separating by cyclonic separator (7), sieve by screen cloth (8) again, detect finished product.
1, the parts by weight proportioning that has the powder coating of antibacterial:
20 parts of Resins, epoxy
50 parts in vibrin
20 parts of polyurethane curing agents
8 parts of antiseptic-germicide colour batches
1 part of flow agent
0.5 part of defoamer
15 parts of color stuffings
2, the preparation that has the powder coating of antibacterial:
1. choose resin, solidifying agent, antiseptic-germicide colour batch, flow agent, defoamer and color stuffing by above 1 described parts by weight and put into mixing tank (1), then by after forcing machine (2) coextrusion, pass through Blowing stopper (3) cooling again, also can carry freezing air further to cool off, obtain the compressing tablet material with heat exchanger (4);
2. get the compressing tablet material that 1. step obtains, grind, use main grinding machine (6) secondary to pulverize grinding again and obtain fine powder, in the regrind process, can use heat exchanger (4) to carry chilled air cools, obtain fine powder by secondary grinding machine (5) is preliminary;
3. get the fine powder that 2. step obtains, after separating by cyclonic separator (7), sieve by screen cloth (8) again, detect finished product.
Embodiment 4
1, the parts by weight proportioning that has the powder coating of antibacterial:
50 parts of hydroxy polyester resins
30 parts of Resins, epoxy
22 parts of isocyanate curing agents
5 parts of antiseptic-germicide colour batches
1.5 parts of flow agents
3 parts of defoamers
20 parts of color stuffings
5 parts of wax class matting agents
2, the preparation that has the powder coating of antibacterial:
1. choose resin, solidifying agent, antiseptic-germicide colour batch, flow agent, defoamer, color stuffing and wax class matting agent by above 1 described parts by weight and put into mixing tank (1), then by after forcing machine (2) coextrusion, pass through Blowing stopper (3) cooling again, also can carry freezing air further to cool off, obtain the compressing tablet material with heat exchanger (4);
2. get the compressing tablet material that 1. step obtains, grind, use main grinding machine (6) secondary to pulverize grinding again and obtain fine powder, in the regrind process, can use heat exchanger (4) to carry chilled air cools, obtain fine powder by secondary grinding machine (5) is preliminary;
3. get the fine powder that 2. step obtains, after separating by cyclonic separator (7), sieve by screen cloth (8) again, detect finished product.(lot number 02)
1, the parts by weight proportioning that has the powder coating of antibacterial:
50 parts of urethane resins
35 parts of Resins, epoxy
36 parts of isocyanate curing agents
8 parts of antiseptic-germicide colour batches
2 parts of flow agents
4 parts of defoamers
28 parts of color stuffings
4 parts of wax class matting agents
3 parts of aluminum oxide growth agents
2, the preparation that has the powder coating of antibacterial:
1. choose urethane resin, Resins, epoxy, isocyanate curing agent, antiseptic-germicide colour batch, flow agent, defoamer, color stuffing and wax class matting agent by above 1 described parts by weight and the aluminum oxide growth agent is put into mixing tank (1), then by after forcing machine (2) coextrusion, pass through Blowing stopper (3) cooling again, also can carry freezing air further to cool off, obtain the compressing tablet material with heat exchanger (4);
2. get the compressing tablet material that 1. step obtains, grind, use main grinding machine (6) secondary to pulverize grinding again and obtain fine powder, in the regrind process, can use heat exchanger (4) to carry chilled air cools, obtain fine powder by secondary grinding machine (5) is preliminary;
3. get the fine powder that 2. step obtains, after separating by cyclonic separator (7), sieve by screen cloth (8) again, detect finished product.Embodiment 6 has the antibacterial experiment of the powder coating of antibacterial
According to JISZ 2801 standards, detect the anti-microbial activity of antibacterial powder paint of the present invention to intestinal bacteria and staphylococcus aureus, concrete experimental result is shown in following table 1 and table 2:
The colibacillary antibacterial activity test result of table 1
| Sample | 0 hour bacterial count alive | Administration is bacterial count alive after 24 hours | Sterilizing rate % |
| Blank group | ??2.8×10 5 | ??1.0×10 7 | ??0 |
| 01 group of sample of lot number | ??2.8×10 5 | ??＜1.0×10 2 | ??＞99.9％ |
| 02 group of sample of lot number | ??2.8×10 5 | ??＜1.0×10 2 | ??＞99.9％ |
The antibacterial activity test result of table 2 staphylococcus aureus
| Sample | 0 hour bacterial count alive | Administration is bacterial count alive after 24 hours | Sterilizing rate % |
| Blank group | ??1.3×10 5 | ??4.8×10 5 | ??0 |
| 01 group of sample of lot number | ??1.3×10 5 | ??＜1.0×10 2 | ??＞99.9％ |
| 02 group of sample of lot number | ??1.3×10 5 | ??＜1.0×10 2 | ??＞99.9％ |
Indicate by above typical antibacterium experimental result, powder coating provided by the invention have an effect of well killing and suppressing bacteriological aftergrowth, two batches of samples provided by the invention have all shown very strong antibacterial effect to intestinal bacteria and staphylococcus aureus, sterilizing rate is all greater than 99.9%, bacterium is in the presence of powder coating provided by the invention, just energy deactivation at short notice, bacterium can not survive.Powder coating stable in properties provided by the invention, good anti-bacterial effect, can be widely used in the different field.
Claims (10)
1, a kind of powder coating with antibacterial is characterized in that, it comprises the raw material of following parts by weight:
60～90 parts of resins
2～40 parts in solidifying agent
1.5～10 parts of antiseptic-germicide colour batches
0.5～2 part of flow agent
0～4.5 part of defoamer
4～30 parts of color stuffings
2, the powder coating with antibacterial according to claim 1 is characterized in that, described powder coating with antibacterial also can add the wax class matting agent and/or the aluminum oxide growth agent of 0～15 parts by weight.
3, the powder coating with antibacterial according to claim 1, it is characterized in that described resin is one or more several hybrid resins in vibrin, acrylic resin, fluorocarbon resin, urethane resin, Resins, epoxy or the polyester modified epoxy resin.
4, the powder coating with antibacterial according to claim 1 is characterized in that, described antiseptic-germicide colour batch is made with 1: 10 to 3: 10 mixed with resin by inorganic antiseptic.
5, the powder coating with antibacterial according to claim 4 is characterized in that, described inorganic antiseptic is the antiseptic-germicide that glass carrier and silver ions are formed.
6, the powder coating with antibacterial according to claim 1 is characterized in that, described color stuffing is organic color stuffing or is inorganic color stuffing.
According to each described powder coating of claim 1 to 6, it is characterized in that 7, described solidifying agent is isocyanate curing agent, epoxy curing agent, curable urethane resin agent or polyester resin solidifying agent with antibacterial.
8, a kind of described method with powder coating of antibacterial of claim 1 for preparing is characterized in that may further comprise the steps:
1. choose resin, solidifying agent, antiseptic-germicide colour batch, flow agent, defoamer and color stuffing by the described parts by weight of claim 1 and put into mixing tank, after extruding by forcing machine then, obtain the compressing tablet material by the Blowing stopper cooling;
2. get the compressing tablet material that 1. step obtains, obtain fine powder by secondary grinding machine and main grinding machine regrind;
3. get the fine powder that 2. step obtains, separate, sieve by cyclonic separator, detect finished product.
9, the preparation method with powder coating of antibacterial according to claim 8 is characterized in that, step can also add wax class matting agent and/or aluminum oxide growth agent in 1. and mix the back coextrusion and obtain the compressing tablet material.
10, each described powder coating application in the antimicrobial protection decorative coveringn of food mfg, building, electronic product, medical industry, agricultural or material storage art of claim 1 to 6 with antibacterial.
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