CN1754929A - UV cured protective coating of reflective film - Google Patents
UV cured protective coating of reflective film Download PDFInfo
- Publication number
- CN1754929A CN1754929A CN 200410066864 CN200410066864A CN1754929A CN 1754929 A CN1754929 A CN 1754929A CN 200410066864 CN200410066864 CN 200410066864 CN 200410066864 A CN200410066864 A CN 200410066864A CN 1754929 A CN1754929 A CN 1754929A
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- protective coating
- photoinitiator
- reflective film
- oligomer
- retroreflective sheeting
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Abstract
The invention discloses a cured reflection membrane protection paint for ultraviolet with material as oligomer, soluble thinner, light initiator, and auxiliary agent. It also discloses opposite application on 3M membrane. This product can solidify rapidly, and has well property, without volatile organic solvent and pollution to environment.
Description
Technical Field
The invention belongs to the field of chemical industry, relates to a novel chemical coating, and further relates to an ultraviolet curing reflective film protective coating and application thereof.
Background
In recent years, with the gradual enhancement of environmental legislation in countries around the world, ultraviolet light curing technology has rapidly developed around the world. Uv curing is a technique for obtaining a coating film that is also cross-linkable by rapid polymerization of a monomer/oligomer mixture. This rapid polymerization of UV systems is achieved with photoinitiators.
The most important advantage of uv coatings from an environmental point of view is their non-volatility. In addition, the method has the advantages that: no solvent-greenhouse effect, no pollution on working sites, energy conservation, easy washing, space conservation, high gloss, less waste, diversity of manufacturing methods, adaptability, quick product replacement and the like.
However, in the prior art, because ultraviolet curing of the coating is still a less mature technology, a series of problems to be solved exist, and therefore, the application of ultraviolet light in the coating can be further expanded. One of the most important problems in its technical limitations is the economic factor, i.e. the high price of the basic raw materials used in the technology. These raw materials include oligomers and monomers, which are much more expensive than corresponding solvent-borne coatings. On the other hand, the limitation is that many of the prior art ultraviolet coatings contain certain toxicity, which greatly limits the industrial application.
Based on the above drawbacks of the prior art, the present inventors have developed an improved uv curable reflective film protective coating which is versatile and particularly suitable for 3M film coating. Ithas the advantages of no environmental pollution, low energy consumption, low investment, high productivity, high product quality, etc. Completely meets the large direction of the development of our industry and also completely meets the requirements of international industry '3E', namely Ecology protection, Energy conservation and economies.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an ultraviolet light curing reflective film protective coating, which comprises the following components: oligomer, soluble diluent, photoinitiator and auxiliary agent.
Further, the formula of the ultraviolet light curing reflective film protective coating comprises the following components in percentage by weight: 50-60% of oligomer, 10-20% of soluble diluent, 25-30% of photoinitiator and 1-3% of auxiliary agent.
Furthermore, in the ultraviolet light curing reflective film protective coating, the oligomer is selected from unsaturated polyester, epoxy acrylate resin or polyurethane acrylate resin.
Further, in the present invention, the soluble diluent is selected from epoxy diluents, acryl ester diluents or isooctyl acrylate diluents.
Further, in the present invention, the photoinitiator is selected from a molecular cleavage type photoinitiator or a hydrogen abstraction type photoinitiator. Further, the photoinitiator is selected from benzoin isopropyl ether or benzophenone.
Further, in the present invention, the auxiliary agent may include one or more of a stabilizer, a matting agent, a defoaming agent, a leveling agent, and an adhesion promoter.
The technical problem to be solved by the invention is also to provide the application of theultraviolet light curing reflective film protective coating on the 3M film.
The preparation method of the ultraviolet curing reflective film protective coating comprises the following steps:
① the oligomer is used as base material in 50-60%.
② soluble diluent 10-20%, light initiator 25-30%, assistant 1-3%
③ when mixing, it is preferable to use a container with enamel or glass lining, disperse with a high-speed stirrer, avoid heavy metal objects such as ironware, etc., to reduce the brightness,
④ can be used after being stirred uniformly.
The ultraviolet curing principle adopted by the coating of the invention is as follows:
photoinitiator excitation (transition to excited state by ultraviolet radiation of wavelength 200-
Initiation of(conjugation of the product to polymerization)
Increase in growth
(molecular weight further increased)
Terminate
(Forming a network skeleton)
The oligomer is specially a kind of high molecular polymer with unsaturated double bond structure, which can further react and expand into a cross-linked solidified body, so it is also called prepolymer. Most oligomers are of different types of acrylic resins and are generally not of significant molecular weight. The oligomers playan extremely important role in radiation-curing formulations, which determines the overall properties of the coating after radiation curing. Oligomers that may be used in the present invention include, but are not limited to, unsaturated polyesters, epoxy acrylate resins, urethane acrylate resins.
Photoinitiators are important factors in determining the curing speed of uv materials. The photoinitiator is excited by ultraviolet light to generate active groups, and the prepolymer and the active diluent are initiated to polymerize, crosslink or graft. Under the action of ultraviolet light, free radicals and cations are generated. The two kinds of particles are high-energy active groups in a chemical system, and are favorable for initiating the crosslinking and curing of unsaturated double bonds of monomers, oligomers and polymers. In the present invention, the photoinitiator used may be selected from a molecular cleavage type photoinitiator or a hydrogen abstraction type photoinitiator, such as benzoin isopropyl ether or benzophenone.
The thinner is added into the ultraviolet curing coating to adjust the material to proper viscosity, control the curing speed and crosslinking density of the ultraviolet material and improve the physical and mechanical properties of a cured film. Diluents that may be used in the present invention include, but are not limited to, epoxy diluents, acryl ester diluents, isooctyl acrylate diluents.
The auxiliaries, although not directly involved in the curing process in radiation curing, are nevertheless not negligible in their effect. The most commonly used auxiliaries are stabilizers, which are used primarily to prevent gelling of the formulation during storage or to prevent the formulation from self-curing under dim light conditions. In addition, other auxiliary agents, including pigments, dyes, matting agents, defoamers, leveling agents, adhesion promoters, and the like, also play different roles in improving the final curing properties. Can be selectively used depending on the application of the coating to be prepared.
The ultraviolet light curing reflective film protective coating can be used for 3M films and can form a protective effect on the surfaces of the 3M films. Although the 3M film has good reflection performance, flexibility, weather resistance and corrosion resistance, the 3M film is easy to scratch and damage without adding a protective layer.
The ultraviolet light curing reflective film protective coating has the following advantages:
1) the coating can be cured instantly, can be cured into a hard, wear-resistant and beautiful cured coating within a few seconds or less than one second, and has excellent performance.
2) The energy-saving, land-saving and time-saving device does not need a huge drying device, is suitable for continuous production, and greatly improves the production efficiency.
3) No solvent is discharged, and the system does not contain volatile organic solvent and does not cause pollution to the environment.
Drawings
Fig. 1 shows a coating structure diagram of the uv-curable protective coating for retroreflective sheeting used for 3M film.
Detailed Description
The invention relates to an ultraviolet light curing reflective film protective coating which comprises the following raw materials: oligomer, soluble diluent, photoinitiator and auxiliary agent.
Further, the formula of the ultraviolet light curing reflective film protective coating comprises the following components in percentage by weight: 50-60% of oligomer, 10-20% of soluble diluent, 25-30% of photoinitiator and 1-3% of auxiliary agent.
Furthermore, in the ultraviolet light curing reflective film protective coating, the oligomer is selected from unsaturated polyester, epoxy acrylate resin or polyurethane acrylate resin.
Further, in the present invention, the soluble diluent is selected from epoxy diluents, acryl ester diluents or isooctyl acrylate diluents.
Further, in the present invention, the photoinitiator is selected from a molecular cleavage type photoinitiator or a hydrogen abstraction type photoinitiator. Further, the photoinitiator is selected from benzoin isopropyl ether or benzophenone.
Further, in the present invention, the auxiliary agent may include one or more of a stabilizer, a matting agent, a defoaming agent, a leveling agent, and an adhesion promoter.
The technical problem to be solved by the invention is also to provide the application of the ultraviolet light curing reflective film protective coating on the 3M film.
The preparation method of the ultraviolet curing reflective film protective coating comprises the following steps:
① the oligomer is used as base material in 50-60%.
② soluble diluent 10-20%, light initiator 25-30%, assistant 1-3%
③ when mixing, it is preferable to use a container with enamel or glass lining, disperse with a high-speed stirrer, avoid heavy metal objects such as ironware, etc., to reduce the brightness,
④ can be used after being stirred uniformly.
In one embodiment of the present invention, an uv curable reflective film protective coating for 3M films is prepared, the formulation of the selected uv curable reflective film protective coating is as follows: 55% of oligomer, 13% of soluble diluent, 30% of photoinitiator and 2% of auxiliary agent.
The preparation method of the ultraviolet curing reflective film protective coating comprises the following steps:
① used 55% of the oligomer as a base.
②% soluble diluent 13%, photoinitiator 30% and auxiliary agent 3%
③ when mixing, it is preferable to use a container with enamel or glass lining, disperse with a high-speed stirrer, avoid heavy metal objects such as ironware, etc., to reduce the brightness,
④ can be used after being stirred uniformly.
During coating, a 3M film 2 can be firstly attached to the surface of a substrate 1, then various coatings including a white reflective layer 3, a noctilucent layer 4 and the like can be added to the 3M film as required, specifically, the treatment can be sequentially carried out according to the sequence shown in fig. 1, and finally, the ultraviolet curing reflective film protective coating 5 of the invention is coated on the outer layer.
After coating with the coating prepared above, it was found that it was cured instantaneously to form a hard, abrasion-resistant and glossy cured coating film. And through professional gas detection, after the coating is applied, the phenomenon of solvent volatilization is avoided, no detectable peculiar smell is generated, and no pollution is caused to the environment.
Claims (8)
1. An ultraviolet light curing reflective film protective coating is characterized by comprising: oligomer, soluble diluent, photoinitiator and assistant.
2. The ultraviolet-curing reflective film protective coating as claimed in claim 1, wherein the formula of the raw materials comprises the following components in percentage by weight:
50 to 60 percent of oligomer
10 to 20 percent of soluble diluent
25 to 30 percent of photoinitiator
1 to 3 percent of auxiliary agent
3. The UV-curable protective coating for retroreflective sheeting of claim 1 wherein the oligomer is selected from the group consisting of unsaturated polyesters, epoxy acrylate resins, and urethane acrylate resins.
4. The UV-curable protective coating for retroreflective sheeting of claim 1 wherein the soluble diluent is selected from the group consisting of epoxy diluents, acryl ester diluents, and isooctyl acrylate diluents.
5. The UV-curable protective coating for retroreflective sheeting of claim 1 wherein the photoinitiator is selected from the group consisting of molecular-breaking photoinitiators and hydrogen-abstraction photoinitiators.
6. The UV-curable protective coating for retroreflective sheeting of claim 5 wherein the photoinitiator is selected from benzoin isopropyl ether and benzophenone.
7. The UV-curable protective coating for retroreflective sheeting of claim 1 wherein the auxiliary agent comprises one or more of a stabilizer, a matting agent, a defoamer, a leveling agent, and an adhesion promoter.
8. Use of the UV-curable protective coating for retroreflective sheeting of claim 1 in 3M sheeting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066864 CN1754929A (en) | 2004-09-29 | 2004-09-29 | UV cured protective coating of reflective film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066864 CN1754929A (en) | 2004-09-29 | 2004-09-29 | UV cured protective coating of reflective film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1754929A true CN1754929A (en) | 2006-04-05 |
Family
ID=36688493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410066864 Pending CN1754929A (en) | 2004-09-29 | 2004-09-29 | UV cured protective coating of reflective film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1754929A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102827343A (en) * | 2012-09-21 | 2012-12-19 | 肇庆福田化学工业有限公司 | Polyurethane unsaturated polyester resin and photocuring coating containing same |
| CN104177998A (en) * | 2014-09-09 | 2014-12-03 | 苏州圣谱拉新材料科技有限公司 | Unsaturated polyester photosensitive coating for ceramics |
| CN104328710A (en) * | 2014-09-10 | 2015-02-04 | 广州大学 | Preparation method of environmentally-friendly aqueous UV paper gloss oil |
| CN104497815A (en) * | 2014-12-23 | 2015-04-08 | 湖州南浔双林振森实木加工厂 | Preparation method of high-temperature-resistant ultraviolet-curable coating |
| CN105219047A (en) * | 2015-09-18 | 2016-01-06 | 苏州新区佳合塑胶有限公司 | A kind of high-temperature-resistant flame-retardant resin |
| CN105400385A (en) * | 2015-11-27 | 2016-03-16 | 宁波双人新材料有限公司 | Photocuring abrasion-resistant coating having antibacterial performance and preparation method thereof |
| CN110655812A (en) * | 2018-06-29 | 2020-01-07 | 常州格林感光新材料有限公司 | Composite material composition for rapid repair and application thereof |
-
2004
- 2004-09-29 CN CN 200410066864 patent/CN1754929A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102827343A (en) * | 2012-09-21 | 2012-12-19 | 肇庆福田化学工业有限公司 | Polyurethane unsaturated polyester resin and photocuring coating containing same |
| CN102827343B (en) * | 2012-09-21 | 2014-06-04 | 肇庆福田化学工业有限公司 | Polyurethane unsaturated polyester resin and photocuring coating containing same |
| CN104177998A (en) * | 2014-09-09 | 2014-12-03 | 苏州圣谱拉新材料科技有限公司 | Unsaturated polyester photosensitive coating for ceramics |
| CN104328710A (en) * | 2014-09-10 | 2015-02-04 | 广州大学 | Preparation method of environmentally-friendly aqueous UV paper gloss oil |
| CN104497815A (en) * | 2014-12-23 | 2015-04-08 | 湖州南浔双林振森实木加工厂 | Preparation method of high-temperature-resistant ultraviolet-curable coating |
| CN105219047A (en) * | 2015-09-18 | 2016-01-06 | 苏州新区佳合塑胶有限公司 | A kind of high-temperature-resistant flame-retardant resin |
| CN105400385A (en) * | 2015-11-27 | 2016-03-16 | 宁波双人新材料有限公司 | Photocuring abrasion-resistant coating having antibacterial performance and preparation method thereof |
| CN110655812A (en) * | 2018-06-29 | 2020-01-07 | 常州格林感光新材料有限公司 | Composite material composition for rapid repair and application thereof |
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