CN1715349A - Process for preparing water polyurethane/hydrotalcite composite paint with anti-ultraviolet property - Google Patents
Process for preparing water polyurethane/hydrotalcite composite paint with anti-ultraviolet property Download PDFInfo
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- CN1715349A CN1715349A CN 200410062238 CN200410062238A CN1715349A CN 1715349 A CN1715349 A CN 1715349A CN 200410062238 CN200410062238 CN 200410062238 CN 200410062238 A CN200410062238 A CN 200410062238A CN 1715349 A CN1715349 A CN 1715349A
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- hydrotalcite
- polyurethane
- paint
- ultraviolet property
- composite paint
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Abstract
The paint has filming matter compounded with polyurethane emulsion, hydrotalcite as modifier and other assistant, and features that laminated nanometer hydrotalcite is added to prepare composite water thinned polyurethane/hydrotalcite coating with UV resisting performance. The preparation process includes grinding hydrotalcite as modifier and dispersant in certain ratio into translucent colloid, dispersing the colloid into polyurethane as filming material and defoaming to prepare the laminated nanometer hydrotalcite modified water thinned uvioresistant polyurethane paint. The uvioresistant polyurethane paint has the high attachment, good flexibility and other advantages of common polyurethane paint maintained, raised mechanical performance, and excellent uvioresistant performance capable of shielding 86 % of the ultraviolet rays in the wavelength range of 200-300 nm.
Description
Affiliated technical field:
The present invention relates to a kind of water polyurethane/hydrotalcite composite paint with anti-ultraviolet property.
Technical background:
Ultraviolet ray is the hertzian wave between 200～400 nanometers, be divided into shortwave (200～280nm), medium wave (280～320nm), (320～400nm), ultraviolet wavelength is short more, and is big more to the destruction of coating, timber, plastics, paper etc. for long wave.
Polyurethane coating is widely used because of having excellent mechanical property, but the popular great majority are solvent borne polyurethane coating in the market, contain a large amount of organic solvents and a certain amount of free isocyanate, enhancing along with people's eco-friendly power source consciousness, the low Contamination Coatings that with the water-borne coatings is representative is developed, but, aqueous polyurethane coating artificial ageing resistance and physical and mechanical properties are relatively poor, its application is restricted, aqueous polyurethane coating has absorption more by force to ultraviolet shortwave, the formula system that has is for anti-aging, the anti ultraviolet agent that has added the multiple pricing costliness, antioxidant has improved cost greatly, therefore will select price suitable ultraviolet light screener or ultraviolet shielded filler, make simultaneously its in coating, use have concurrently nontoxic, the characteristics long-acting, that consistency is good.
Summary of the invention:
The present invention is directed to the shortcoming of aqueous polyurethane, a kind of preparation method with water polyurethane/hydrotalcite composite paint of anti-ultraviolet property is proposed, this coating has been selected stratified nano materials hydrotalcite (general laminate plane ovalize for use, radial dimension is the 20-60 nanometer), after hydrotalcite effectively disperseed, can avoid the agglomeration of nano material, thereby can in coating, show the special effects of nano material, not only improve water polyurethane/hydrotalcite compelx coating mechanical property, and make that film can uvioresistant, strengthen its ageing resistance.
Embodiment:
1. water polyurethane/hydrotalcite composite paint testing method:
The mechanical property tester device and the standard of table 1 paint film
| The performance testing apparatus standard of test |
| Hardness QBY-II type oscillating rod type hardness of paint film meter GB1730-79 pliability QTY-32 type paint film bend test device GB1731-79 adhesive force QFZ type Coating adhesion test instrument GB1720-79 anti-wear performance QNM type paint film abrasion instrument GB1768-79 resistance to impact QCJ type paint film impactor is measured the GB1732-79 of paint film |
2. optical performance test: measure water polyurethane/hydrotalcite compelx coating ultraviolet, visible light transmissive rate curve with the Japanese SHIMADZU INTRA20 of company type ultra-violet and visible spectrophotometer.
Embodiment one
Take by weighing hydrotalcite and dispersion agent by the certain mass ratio, place mortar to grind 30 minutes, make translucent hydrotalcite slurry.Take by weighing the 10g polyaminoester emulsion as in the beaker, get weight 1% hydrotalcite of filming and add in the beaker, ultra-sonic dispersion is 30 minutes on the ultra-sonic dispersion instrument, and static back de-bubble is filmed, and sample was placed 80 ℃ of baking ovens under drying 12 hours.Carry out film performance test and UV-light and see through test.
Embodiment two
Take by weighing hydrotalcite and dispersion agent by the certain mass ratio, place mortar to grind 30 minutes, make translucent hydrotalcite slurry.Take by weighing the 10g polyaminoester emulsion as in the beaker, get weight 3% hydrotalcite of filming and add in the beaker, ultra-sonic dispersion is 30 minutes on the ultra-sonic dispersion instrument, and static back de-bubble is filmed, and sample was placed 80 ℃ of baking ovens under drying 12 hours.Carry out film performance test and UV-light and see through test.
Embodiment three
Take by weighing hydrotalcite and dispersion agent by the certain mass ratio, place mortar to grind 30 minutes, make translucent hydrotalcite slurry.Take by weighing the 10g polyaminoester emulsion as in the beaker, get weight 5% hydrotalcite of filming and add in the beaker, ultra-sonic dispersion is 30 minutes on the ultra-sonic dispersion instrument, and static back de-bubble is filmed, and sample was placed 80 ℃ of baking ovens under drying 12 hours.Carry out film performance test and UV-light and see through test.
Main technical data is as follows:
1. be coated with film dynamic performance
Table 1 water polyurethane/hydrotalcite compelx coating performance
| Hydrotalcite content/% | 0 | 3％ | 5％ | GB |
| Sticking power/level | 1 | 1 | 1 | GB1720-79 |
| Snappiness/cm | 2 | 2 | 2 | GB1731-79 |
| Shock strength/kg.cm | 50 | 50 | 50 | GB1732-93 |
| Hardness | 0.569 | 0.657 | 0.665 | GB1730-93 |
| Wearability g/1000 changes | 0.0098 | 0.0219 | 0.0201 | GB1768-97 |
2. water polyurethane/hydrotalcite compelx coating uvioresistant aptitude tests
Table 2 water polyurethane/hydrotalcite compelx coating ultraviolet permeability
| Hydrotalcite content/% | The coating transmitance, % | |||
| 240nm | 300nm | 360nm | 560nm | |
| 0 | 35.4 | 68.8 | 80.3 | 90.4 |
| 1 | 6.8 | 36.5 | 78 | 89.1 |
| 3 | 2.8 | 33.7 | 76.5 | 87.4 |
| 5 | 1.1 | 24.8 | 41.4 | 62.5 |
The water polyurethane/hydrotalcite compelx coating uvioresistant ability of different as can be seen from Table 2 hydrotalcite content, not adding the hydrotalcite polyaminoester emulsion films higher to the wave band transmitance of shortwave, after adding 3% hydrotalcite, increased by 50% in that the shortwave scope is ultraviolet shielded, the medium wave scope is ultraviolet shielded to have increased by 113%, the ultraviolet shielded increase of long-wave limit is less, and compelx coating keeps the transparency good as can be seen in visible-range.Adding 5% ultraviolet shielded property further increases, and coating is in the ultraviolet ray of wavelength 200～300 nanometer ultraviolet ray scope maskables 86%, but the transparency descends.
Claims (5)
1. water polyurethane/hydrotalcite composite paint with anti-ultraviolet property, the shared weight percent of various raw materials:
Aqueous polyurethane emulsion 93～100%
Laminar nano hydrotalcite (LDHs) 0～5%
Dispersion agent 1～2%.
2. according to claim 1, described a kind of water polyurethane/hydrotalcite composite paint with anti-ultraviolet property is characterized in that layered nano material is the Mg/Al mol ratio at 2～3 hydrotalcite.
3. according to claim 1, described a kind of water polyurethane/hydrotalcite composite paint with anti-ultraviolet property is characterized in that described film forming matter is an aqueous polyurethane emulsion.
4. according to claim 1, described a kind of water polyurethane/hydrotalcite composite paint with anti-ultraviolet property is characterized in that the agent of described one-tenth dispersion agent is ethylene glycol, propylene glycol.
5. according to claim 1, described a kind of water polyurethane/hydrotalcite composite paint with anti-ultraviolet property, it is characterized in that described using method: nano modifier hydrotalcite and dispersion agent are added mortar in proportion be ground to translucent jelly, add then and carry out ultra-sonic dispersion in the filmogen polyaminoester emulsion, de-bubble makes the hydrotalcite-modified aqueous polyurethane uvioresistant paint of laminar nano of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410062238 CN1715349A (en) | 2004-07-01 | 2004-07-01 | Process for preparing water polyurethane/hydrotalcite composite paint with anti-ultraviolet property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410062238 CN1715349A (en) | 2004-07-01 | 2004-07-01 | Process for preparing water polyurethane/hydrotalcite composite paint with anti-ultraviolet property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1715349A true CN1715349A (en) | 2006-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410062238 Pending CN1715349A (en) | 2004-07-01 | 2004-07-01 | Process for preparing water polyurethane/hydrotalcite composite paint with anti-ultraviolet property |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173121B (en) * | 2007-10-11 | 2010-12-01 | 同济大学 | Anti-ultraviolet organic-inorganic nano composite transparent coating and method for producing the same |
| CN102051100A (en) * | 2010-10-28 | 2011-05-11 | 浙江工业大学 | Lamellar ordered hybrid coating film and preparation method thereof |
| CN102061118A (en) * | 2010-12-28 | 2011-05-18 | 沈阳市豪士装修装饰有限公司 | Water-based nano heat insulation paint capable of constructing at low temperature and preparation method thereof |
| CN102134424A (en) * | 2011-04-12 | 2011-07-27 | 沈阳建筑大学 | Uvioresistant styrene acrylic exterior wall coating |
| CN101648787B (en) * | 2009-06-29 | 2011-11-30 | 上海东升新材料有限公司 | Cement-based waterproof mortar photosensitive ultraviolet resistance protectant |
| CN107216791A (en) * | 2017-06-28 | 2017-09-29 | 常州万博金属构件厂 | A kind of fabric flame-retardant coatings glue and preparation method thereof |
| CN110251061A (en) * | 2019-06-26 | 2019-09-20 | 浙江大学 | The doughnut casing destroyed for medical endoscope protection Bladder stone and its application |
| CN110577653A (en) * | 2019-09-10 | 2019-12-17 | 陕西科技大学 | Emulsion nano composite emulsion based on electrostatic self-assembly and preparation method thereof |
-
2004
- 2004-07-01 CN CN 200410062238 patent/CN1715349A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173121B (en) * | 2007-10-11 | 2010-12-01 | 同济大学 | Anti-ultraviolet organic-inorganic nano composite transparent coating and method for producing the same |
| CN101648787B (en) * | 2009-06-29 | 2011-11-30 | 上海东升新材料有限公司 | Cement-based waterproof mortar photosensitive ultraviolet resistance protectant |
| CN102051100A (en) * | 2010-10-28 | 2011-05-11 | 浙江工业大学 | Lamellar ordered hybrid coating film and preparation method thereof |
| CN102051100B (en) * | 2010-10-28 | 2012-08-22 | 浙江工业大学 | Lamellar ordered hybrid coating film and preparation method thereof |
| CN102061118A (en) * | 2010-12-28 | 2011-05-18 | 沈阳市豪士装修装饰有限公司 | Water-based nano heat insulation paint capable of constructing at low temperature and preparation method thereof |
| CN102134424A (en) * | 2011-04-12 | 2011-07-27 | 沈阳建筑大学 | Uvioresistant styrene acrylic exterior wall coating |
| CN102134424B (en) * | 2011-04-12 | 2012-09-05 | 沈阳建筑大学 | Uvioresistant styrene acrylic exterior wall coating |
| CN107216791A (en) * | 2017-06-28 | 2017-09-29 | 常州万博金属构件厂 | A kind of fabric flame-retardant coatings glue and preparation method thereof |
| CN110251061A (en) * | 2019-06-26 | 2019-09-20 | 浙江大学 | The doughnut casing destroyed for medical endoscope protection Bladder stone and its application |
| CN110251061B (en) * | 2019-06-26 | 2020-06-23 | 浙江大学 | Hollow fiber casing pipe for protecting medical endoscope from laser damage of holmium and application thereof |
| CN110577653A (en) * | 2019-09-10 | 2019-12-17 | 陕西科技大学 | Emulsion nano composite emulsion based on electrostatic self-assembly and preparation method thereof |
| CN110577653B (en) * | 2019-09-10 | 2022-04-26 | 陕西科技大学 | Emulsion nano composite emulsion based on electrostatic self-assembly and preparation method thereof |
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