CN105585938A - Self-repair powder coating applicable to aluminum material - Google Patents
Self-repair powder coating applicable to aluminum material Download PDFInfo
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- CN105585938A CN105585938A CN201510823726.XA CN201510823726A CN105585938A CN 105585938 A CN105585938 A CN 105585938A CN 201510823726 A CN201510823726 A CN 201510823726A CN 105585938 A CN105585938 A CN 105585938A
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Abstract
The invention discloses a self-repair powder coating applicable to an aluminum material. The self-repair powder coating is used for electrostatic spraying preparation and application. The powder coating is prepared from, by weight, 450-650 parts of epoxy resin, 300-400 parts of pre-cipitated barium sulfate, 40-50 parts of a curing agent, 5-10 parts of a charge control agent, 20-30 parts of pigment and 40-60 parts of self-repair microcapsules with the catalysis effect. When the coating produces a microcrack, the microcapsules are broken, dicyclopentadiene will rapidly permeate into silver streaks, acts when encountering Grubbs catalyst to produce polymerization and crosslinking, and therefore the repair purpose is achieved. Accordingly, the service life of the powder coating is prolonged, and the self-repair powder coating is applicable to novel industrial production.
Description
Technical field
The present invention relates to a kind of selfreparing powdery paints that is applicable to aluminium, belong to technical field of coatings.
Background technology
Traditional powdery paints can not be there is no to carry out self-recovery under external condition auxiliary, so in the time of coating surface generation micro-crack, conventional powder material can accumulate gradually and finally cause outward appearance generation deformation. And self-healing coatings surface is while producing fine crack, the nanoscale microcapsules of material internal can progressively discharge and be combined with catalyst crackle is cohered again, can fundamentally heal or prevent crackle generation from finally to realize the recovery of coating property.
Summary of the invention
Goal of the invention is, invents a kind of epoxide powder coating with self-repair function, will after self-repairing microcapsule and powdery paints blend, be used in metal aluminium material surface by electrostatic spraying and high temperature curing process preparation.
A kind of selfreparing powdery paints that is applicable to aluminium, it is characterized in that: powdery paints is in parts by weight, and its component is: epoxy resin 450-650 part, precipitation barium 300-400 part, curing agent 40-50 part, charge adjusting agent 5-10 part, pigment 20-30 part, band catalytic effect self-repairing microcapsule 40-60 part.
Self-repairing microcapsule in described selfreparing powdery paints is coated macromolecular material. The cyst wall of self-repairing microcapsule is: the Lauxite that urea and 37% formalin are prepared as the ratio of 0.5 ~ 0.6:1 taking the ratio of amount of substance, capsule-core is dicyclopentadiene. Catalyst is Grubbs catalyst.
The preparation method of self-repairing microcapsule is as follows: under stirring environment, urea is dissolved in 2.5% EMA acid anhydride EMA solution, after urea all dissolves, adds appropriate ammonium chloride and resorcinol; Regulate reaction system pH=4 ~ 5 with hydrochloric acid and NaOH, then add dicyclopentadiene, form after emulsion until stable, finally add 37% formalin, urea and 37% formalin are taking the ratio of amount of substance as 0.5 ~ 0.6:1; Above-mentioned reaction system is heated to 55 ± 8 DEG C of reaction 3 ~ 6h; Be cooled to room temperature, filtering and washing, natural air drying; Get for subsequent use with sieve sieve.
Specific embodiment
Below with reference to specific embodiment, the present invention is further explained.
Embodiment 1.
Epoxy resin: 500 parts; Blanc fixe: 400 parts; 40 parts, curing agent, 5 parts of charge adjusting agents, 25 parts of pigment; Mix, utilize double screw extruder to extrude. After separating twice, add 30 parts of self-repairing microcapsules and 6 parts of catalyst mix even. The preparation of self-repairing microcapsule: urea is dissolved in 2.5% EMA acid anhydride EMA solution under stirring environment, after urea all dissolves, adds appropriate ammonium chloride and resorcinol; Regulate reaction system pH=4.5 with hydrochloric acid and NaOH, then add dicyclopentadiene, form after emulsion until stable, finally add 37% formalin, urea and 37% formalin are taking the ratio of amount of substance as 1:2; Above-mentioned reaction system is heated to 55 DEG C of reaction 5h; Be cooled to room temperature, filtering and washing, natural air drying; Sieve and get 200-220 object product.
Embodiment 2.
Epoxy resin: 500 parts; Blanc fixe: 380 parts; 40 parts, curing agent, 5 parts of charge adjusting agents, 25 parts of pigment; Mix, utilize double screw extruder to extrude. After separating twice, add 50 parts of self-repairing microcapsules and 10 parts of catalyst mix even. Repair the preparation of microcapsules: under stirring environment, urea is dissolved in 2.5% EMA acid anhydride EMA solution, after urea all dissolves, adds appropriate ammonium chloride and resorcinol; Regulate reaction system pH=4.5 with hydrochloric acid and NaOH, then add dicyclopentadiene, form after emulsion until stable, finally add 37% formalin, urea and 37% formalin are taking the ratio of amount of substance as 1:2; Above-mentioned reaction system is heated to 55 DEG C of reaction 5h; Be cooled to room temperature, filtering and washing, natural air drying; Sieve and get 200-220 object product.
Above embodiment is only the good embodiment of the present invention, but not in order to retrain the present invention, but in order easily to understand implementation of the present invention. The technical staff of any technical field of coatings, is not departing under disclosed spiritual prerequisite, and equivalent variations, replacement that part details is done, all within protection scope of the present invention.
Claims (4)
1. the invention discloses a kind of selfreparing powdery paints that is applicable to aluminium, for electrostatic spraying preparation and application.
2. the powdery paints described in taking its component of parts by weight as: epoxy resin 450-650 part, precipitation barium 300-400 part, curing agent 40-50 part, charge adjusting agent 5-10 part, pigment 20-30 part, band catalytic effect self-repairing microcapsule 40-60 part.
3. in the time of coating generation microcrack, microcapsules rupture, dicyclopentadiene can infiltrate rapidly crazing, runs into Grubbs catalyst action and produces polymerization crosslinking, to reach the object of reparation.
4. thereby strengthened the service life of powder coating, be applicable to new industrialization and produce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823726.XA CN105585938A (en) | 2015-11-24 | 2015-11-24 | Self-repair powder coating applicable to aluminum material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823726.XA CN105585938A (en) | 2015-11-24 | 2015-11-24 | Self-repair powder coating applicable to aluminum material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105585938A true CN105585938A (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510823726.XA Pending CN105585938A (en) | 2015-11-24 | 2015-11-24 | Self-repair powder coating applicable to aluminum material |
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| CN (1) | CN105585938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896459A (en) * | 2017-03-21 | 2017-06-27 | 海安南京大学高新技术研究院 | Selfreparing optical cable enhancing core containing microcapsules and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286720A (en) * | 1998-03-13 | 2001-03-07 | 美国3M公司 | Latent coating for metal surface repair |
| CN1509298A (en) * | 2001-02-13 | 2004-06-30 | ����ŵ˹��ѧ���»� | Multifunctional autonomically healing composite material |
| KR20120109697A (en) * | 2011-03-25 | 2012-10-09 | 주식회사 케이씨씨 | Foam type powder coating composition for parts of vehicle |
| CN105038502A (en) * | 2015-07-17 | 2015-11-11 | 南通南京大学材料工程技术研究院 | Self-healing epoxy powdery coating containing microcapsule and preparation method thereof |
-
2015
- 2015-11-24 CN CN201510823726.XA patent/CN105585938A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286720A (en) * | 1998-03-13 | 2001-03-07 | 美国3M公司 | Latent coating for metal surface repair |
| CN1509298A (en) * | 2001-02-13 | 2004-06-30 | ����ŵ˹��ѧ���»� | Multifunctional autonomically healing composite material |
| KR20120109697A (en) * | 2011-03-25 | 2012-10-09 | 주식회사 케이씨씨 | Foam type powder coating composition for parts of vehicle |
| CN105038502A (en) * | 2015-07-17 | 2015-11-11 | 南通南京大学材料工程技术研究院 | Self-healing epoxy powdery coating containing microcapsule and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896459A (en) * | 2017-03-21 | 2017-06-27 | 海安南京大学高新技术研究院 | Selfreparing optical cable enhancing core containing microcapsules and preparation method thereof |
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Application publication date: 20160518 |
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