CN103805041B - Composite high-performance coating - Google Patents
Composite high-performance coating Download PDFInfo
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- CN103805041B CN103805041B CN201210443165.7A CN201210443165A CN103805041B CN 103805041 B CN103805041 B CN 103805041B CN 201210443165 A CN201210443165 A CN 201210443165A CN 103805041 B CN103805041 B CN 103805041B
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Abstract
A kind of organic silicon modified polyurethane that the present invention proposes is as the composite high-performance coating of matrix resin composition, including the component of following weight fraction: base polyurethane prepolymer for use as: 10～50 parts；Organic silicon modified polyurethane: 5～30 parts；Further, described organic silicon modified polyurethane is a kind of in block copolymer or graft copolymers or all mixture of two kinds, and the silicone content of described organic silicon modified polyurethane is 5%～35%, and molecular weight is between 2000～50000。Described base polyurethane prepolymer for use as is one or more mixture in cyanate ester based performed polymer, terminal hydroxy group performed polymer, end-silicane-group performed polymer and end alkyl acrylate performed polymer, and molecular weight is between 1000～100000。Coating provided by the invention has good thermostability, hydrophobicity and weatherability, and it is strong that material surface need not be carried out spraying pretreatment, adhesive force by this elastic coating。
Description
Technical field
The present invention relates to a kind of coating, specifically, relate to a kind of composite high-performance coating。
Background technology
Along with the development of new material technology, the composite such as carbon fibre material, kevlar fiber material, glass fiber material is increasingly being applied to electronic product casing, such as the shell of the electronic products such as mobile phone, panel computer, notebook computer。When using industrial coating that these materials are carried out incrustation, due to the surface inertness of material, the adhesive force of paint coatings is poor。Common processing method is first to spray one layer of pretreating agent at surface of bottom material, also referred to as priming paint agent, and then sprayed coating again, or use electric spark that surface of bottom material is activated, then sprayed coating carries out incrustation again。
Meanwhile, along with the development of surface decoration technique, incrustation outward appearance is not only attractive in appearance, and will with certain contact sensing functions。The coating with soft smooth sense of touch of electronic product enclosure incrustation of being now popular in mainly has elastic polyurethane handfeel paint。But due to the molecular structure of polyurethane self, with the standby elastic handfeel paint coating water boiling resistance poor-performing of polyurethane, wetting and while heat under effect, paint film easily loses adhesive force and falls paint。
In existing application technology, the composite coating such as composite, particularly carbon fibre material, kevlar fiber material, glass fiber material, need ground is carried out pretreatment, it addition, the water boiling resistance poor-performing of paint film, it is more difficult to meet the performance requirement of high-end product。
Summary of the invention
It is an object of the invention to as overcoming the deficiencies in the prior art and Problems existing, it is proposed to a kind of organic silicon modified polyurethane is as the composite high-performance coating of matrix resin composition。
Composite high-performance coating of the present invention, including the component of following weight fraction:
Base polyurethane prepolymer for use as: 10～50 parts；
Organic silicon modified polyurethane: 5～30 parts；
Cross-linking agent: 1～15 part；
Antiwear assistant: 3～20 parts；
Coupling agent: 0.3～10 part；
Flatting silica: 2～25 parts；
Levelling agent: 0.1～3 part。
Preferably, described organic silicon modified polyurethane is a kind of in block copolymer or graft copolymers or all mixture of two kinds, and the silicone content of described organic silicon modified polyurethane is 5%～35%, and molecular weight is between 2000～50000。Described base polyurethane prepolymer for use as is one or more mixture in cyanate ester based performed polymer, terminal hydroxy group performed polymer, end-silicane-group performed polymer and end alkyl acrylate performed polymer, and molecular weight is between 1000～100000。Described coupling agent is one or several the mixture in silane coupler, titanate coupling agent, aluminate coupling agent。Antiwear assistant used is the mixture of one or more in aluminium silicate, magnesium silicate, zinc oxide, aluminium oxide, ferrum oxide, zirconium oxide, magnesium oxide。Described cross-linking agent is the mixture of one or more in toluene di-isocyanate(TDI) TDI, methyl diphenylene diisocyanate MDI and hexamethylene diisocyanate HDI。Described levelling agent is the mixture of one or more in esters of acrylic acid levelling agent, polyurethanes levelling agent, organosilicon levelling agent and organosilicon-modified acrylate class levelling agent。
The present invention provides a kind of high-performance coating using organic silicon modified polyurethane to be matrix resin。Organosilicon due to the polysiloxane structure on its main chain, has good thermostability, hydrophobicity and weatherability。Organo-silicon on Polyurethane is used to be modified improving the deficiency of the aspect such as polyurethane heat resistant, resistance to water。Coupling agent is used to improve the surface adhesion force of coating and material。Antiwear assistant is used to substantially increase the anti-wear performance of coating。Compared with prior art, material surface need not be carried out spraying pretreatment by this elastic coating, adhesive force is strong, wearability is high and water boiling resistance excellent performance, is suitably applied the incrustation of the composites such as carbon fibre material, kevlar fiber material, glass fiber material。
Detailed description of the invention
Embodiment 1
In every part of 2g, taking the base polyurethane prepolymer for use as of 60g, add 40g organic silicon modified polyurethane, dispersion machine stirs 10 minutes, add 16g flatting silica, antiwear assistant 10g, coupling agent 2g, cross-linking agent 12g, levelling agent 1.2g, dispersion machine stirs 30 minutes, filters, and the performance of gained coating is as shown in table 1。
Embodiment 2
In every part of 2g, taking the base polyurethane prepolymer for use as of 40g, add 60g organic silicon modified polyurethane, dispersion machine stirs 10 minutes, add 20g flatting silica, antiwear assistant 18g, coupling agent 10g, cross-linking agent 8g, levelling agent 0.8g, dispersion machine stirs 30 minutes, filters, and the performance of gained coating is as shown in table 1。
Embodiment 3
In every part of 2g, taking the base polyurethane prepolymer for use as of 100g, add 10g organic silicon modified polyurethane, dispersion machine stirs 10 minutes, add 30g flatting silica, antiwear assistant 12g, coupling agent 15g, cross-linking agent 30g, levelling agent 5g, dispersion machine stirs 30 minutes, filters, and the performance of gained coating is as shown in table 1。
Embodiment 4
In every part of 2g, taking the base polyurethane prepolymer for use as of 100g, add 50g organic silicon modified polyurethane, dispersion machine stirs 10 minutes, add 25g flatting silica, antiwear assistant 30g, coupling agent 5g, cross-linking agent 7g, levelling agent 3g, dispersion machine stirs 30 minutes, filters, and the performance of gained coating is as shown in table 1。
Embodiment 5
In every part of 2g, taking the base polyurethane prepolymer for use as of 10g, add 60g organic silicon modified polyurethane, dispersion machine stirs 10 minutes, add 20g flatting silica, antiwear assistant 28g, coupling agent 6g, cross-linking agent 12g, levelling agent 0.2g, dispersion machine stirs 30 minutes, filters, and the performance of gained coating is as shown in table 1。
Comparative example 1
In every part of 2g, taking the base polyurethane prepolymer for use as of 60g, add 18g flatting silica, antiwear assistant 20g, coupling agent 5g, cross-linking agent 4g, levelling agent 0.5g, table dispersion machine stirs 30 minutes, filters, and the performance of gained coating is as shown in table 1。
Comparative example 2
In every part of 2g, taking the base polyurethane prepolymer for use as of 60g, add 40g organic silicon modified polyurethane, dispersion machine stirs 10 minutes, adds 18g flatting silica, antiwear assistant 6g, cross-linking agent 4g, levelling agent 1g, and dispersion machine stirs 30 minutes, filters。
Comparative example 3
In every part of 2g, taking the base polyurethane prepolymer for use as of 50g, add 50g organic silicon modified polyurethane, dispersion machine stirs 10 minutes, adds 18g flatting silica, coupling agent 5g, cross-linking agent 20g, levelling agent 2g, and dispersion machine stirs 30 minutes, filters。
The coating property that table 1. is prepared into:
| Sample | Wearability | Adhesive force (hundred lattice methods) | Water boiling resistance |
| Embodiment 1 | 508 circles | 5B | 40 minutes |
| Embodiment 2 | 1062 circles | 5B | 70 minutes |
| Embodiment 3 | 1022 circles | 5B | 25 minutes |
| Embodiment 4 | 1153 circles | 5B | 30 minutes |
| Embodiment 5 | 768 circles | 5B | 80 minutes |
| Comparative example 1 | 1132 circles | 4B | 20 minutes |
| Comparative example 2 | 193 circles | 2B | - |
| Comparative example 3 | 157 circles | 4B | 55 minutes |
It can be seen that the coating prepared by employing inventive formulation, adhesive force is strong, and wearability is strong, water boiling resistance excellent performance, and the increase of organic silicon modified polyurethane significantly improves the water boiling resistance performance of coating；The wearability that additionally coating has also substantially been done in the increase of antiwear assistant consumption high。
Elaboration in book from the description above, above-mentioned embodiment can also be carried out suitable change and amendment by those skilled in the art in the invention。Therefore, the content mentioned in above-described embodiment is not limitation of the invention, and under the premise without departing from the inventive concept of the present invention, any apparent replacement is all within protection scope of the present invention。
Claims (1)
1. a composite high-performance coating, including the component of following parts by weight: base polyurethane prepolymer for use as: 10～50 parts；Organic silicon modified polyurethane: 5～30 parts；Cross-linking agent: 1～15 part；Antiwear assistant: 3～20 parts；Coupling agent: 0.3～10 part；Flatting silica: 2～25 parts；Levelling agent: 0.1～3 part；
Wherein, described organic silicon modified polyurethane is one or both the mixture in block copolymer or graft copolymers, and the silicone content of described organic silicon modified polyurethane is 5%～35%, and molecular weight is between 2000～50000；
Described base polyurethane prepolymer for use as is one or more mixture in cyanate ester based performed polymer, terminal hydroxy group performed polymer, end-silicane-group performed polymer and end alkyl acrylate performed polymer, and described base polyurethane prepolymer for use as molecular weight is between 1000～100000；
Described coupling agent is one or several the mixture in silane coupler, titanate coupling agent, aluminate coupling agent；
Antiwear assistant used is the mixture of one or more in aluminium silicate, magnesium silicate, zinc oxide, aluminium oxide, ferrum oxide, zirconium oxide, magnesium oxide；
Described cross-linking agent is the mixture of one or more in toluene di-isocyanate(TDI) TDI, methyl diphenylene diisocyanate MDI and hexamethylene diisocyanate HDI；
Described levelling agent is the mixture of one or more in esters of acrylic acid levelling agent, polyurethanes levelling agent, organosilicon levelling agent and organosilicon-modified acrylate class levelling agent。
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| CN201210443165.7A CN103805041B (en) | 2012-11-08 | 2012-11-08 | Composite high-performance coating |
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| CN201210443165.7A CN103805041B (en) | 2012-11-08 | 2012-11-08 | Composite high-performance coating |
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| CN103805041A CN103805041A (en) | 2014-05-21 |
| CN103805041B true CN103805041B (en) | 2016-06-22 |
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| CN104250516A (en) * | 2014-09-27 | 2014-12-31 | 安徽铁创新材料科技有限公司 | High-elasticity polyurethane water-proof paint for high-speed railway and preparation method thereof |
| CN104497926B (en) * | 2015-01-26 | 2016-06-01 | 温州泓呈祥科技有限公司 | A kind of water-proof environmental protection binding agent |
| CN104559731B (en) * | 2015-02-15 | 2016-11-09 | 富阳鸿祥技术服务有限公司 | A kind of waterproof paint composition |
| CN104974650A (en) * | 2015-06-30 | 2015-10-14 | 苏州洋杰电子有限公司 | Electronic insulation paint and preparation method thereof |
| CN105348779A (en) * | 2015-11-24 | 2016-02-24 | 江苏华富储能新技术股份有限公司 | Lead acid accumulator housing |
| CN105348780A (en) * | 2015-11-24 | 2016-02-24 | 江苏华富储能新技术股份有限公司 | Novel lead acid accumulator housing |
| CN106833322A (en) * | 2015-12-04 | 2017-06-13 | 中国人民解放军军械工程学院 | A kind of normal temperature cured type black wear-resistant paint and preparation method thereof |
| CN105385336A (en) * | 2015-12-29 | 2016-03-09 | 上海宏盾防伪材料有限公司 | Velvet anti-scratch waterborne polyurethane paint |
| CN106025521B (en) * | 2016-07-13 | 2019-06-04 | 广东劲胜智能集团股份有限公司 | A kind of carbon fibre composite antenna and preparation method thereof |
| CN106280947B (en) * | 2016-08-16 | 2018-10-26 | 台州市尔原聚氨酯有限公司 | A kind of resistance to erosion compound polyurethane material |
| CN106076563B (en) * | 2016-08-16 | 2018-12-04 | 浙江国正安全技术有限公司 | Fluidized bed air flow crusher campaigning device |
| CN106731040B (en) * | 2016-11-30 | 2019-04-30 | 尹国祥 | A kind of mud retaining plate for continuous subsider |
| CN107083170B (en) * | 2017-06-02 | 2019-03-12 | 青岛光辉彩饰有限公司 | A kind of water paint and its preparation and application method |
| CN111087907A (en) * | 2019-12-23 | 2020-05-01 | 江阴市玲珑高分子材料有限公司 | Super-weather-resistant thermosetting powder coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2771744B2 (en) * | 1992-08-24 | 1998-07-02 | 大日精化工業株式会社 | Paint composition |
| CN1100838C (en) * | 1999-03-05 | 2003-02-05 | 旭丽股份有限公司 | Organosilicon modified polyurethane paint |
| CN101613569B (en) * | 2009-07-24 | 2013-07-31 | 广东至诚化学工业有限公司 | Highly flexible ultraviolet curing coating for surface protection of silicon rubber products |
| CN102093538B (en) * | 2010-12-16 | 2012-11-14 | 温州市登达化工有限公司 | Synthesis process of organosilicon-modified single-component aqueous polyurethane coating agent |
| CN102516489A (en) * | 2011-12-14 | 2012-06-27 | 华南理工大学 | Preparation method and application of wear resistant hydroxyl terminated polyurethane resin used for protection coating of silica key |
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Address after: Changan Town, Guangdong city of Dongguan province to 523878 Management District Zhen'an Road Patentee after: Guangdong wins smart group Limited by Share Ltd Address before: Changan Town, Guangdong city of Dongguan province to 523878 Management District Zhen'an Road Patentee before: Dongguan Janus Precision Components Co., Ltd. |
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Address after: Shangjiao village, Chang'an Town, Dongguan City, Guangdong Province Patentee after: Guangdong Chuangshi Intelligent Equipment Group Co.,Ltd. Address before: 523878 Zhen'an road section of Chang'an Town, Dongguan City, Guangdong Province Patentee before: GUANGDONG JANUS INTELLIGENT GROUP Corp.,Ltd. |