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Preparation method of nanocomposite epoxy polysiloxane coating cured at room temperature and coating thereof

A technology of epoxy polysiloxane and nanocomposite, which is applied in epoxy resin coatings, coatings, and devices for coating liquid on the surface, etc., which can solve the problems of UV aging resistance, easy cracking, and low corrosion resistance, and achieve The manufacturing process is simple, the cost is low, and the effect of reducing energy consumption

Active Publication Date: 2011-12-14
上海华晖新材料科技宿迁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN 101463223A has prepared a kind of epoxy-modified organosilicon coating, has improved adhesive force through the epoxy-modified organosilicon coating, has improved the defect that common inorganic resin coating is easy to crack; Chinese patent CN 101679799A has disclosed a kind of Coating compositions containing silicone resins, which improve the flexibility, hardness, impact resistance and corrosion resistance of coatings to a certain extent, but these coating compositions still have UV resistance in long-term harsh environments. Aging, low corrosion resistance, etc.

Method used

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  • Preparation method of nanocomposite epoxy polysiloxane coating cured at room temperature and coating thereof
  • Preparation method of nanocomposite epoxy polysiloxane coating cured at room temperature and coating thereof
  • Preparation method of nanocomposite epoxy polysiloxane coating cured at room temperature and coating thereof

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no. 1 example

[0068] First example: see figure 1 , the present embodiment provides a method for preparing a nanocomposite epoxy polysiloxane coating cured at room temperature, which comprises the following steps:

[0069] (1) Preparation of component A: the components of component A and their weight percentages are as follows:

[0070] Epoxy resin 10-60%,

[0071] Polysiloxane resin 10-70%,

[0072] Titanium dioxide 5-30%,

[0073] Talc powder 2~10%,

[0074] Nano material 1~10%,

[0075] Auxiliary 0.1~2%,

[0076] Organic solvent 1~15%;

[0077] Described step (1), it specifically comprises the following steps: (1.1) the auxiliary agent of corresponding formula quantity and 90% organic solvent of corresponding formula quantity are mixed in advance to prepare solution, then the epoxy resin of corresponding formula quantity and The polysiloxane resin of the corresponding formula quantity is dissolved in the solution, and then put into the high-speed disperser to achieve uniform mixing...

no. 2 example

[0111] The second embodiment is a coating of the above room temperature curing nanocomposite epoxy polysiloxane coating preparation method, the coating is composed of component A and component B. Wherein the components of component A and their weight percentages are as follows: 20% aliphatic epoxy resin, 40% alkoxy functional polysiloxane resin, 10% titanium dioxide, 10% talcum powder, nano SiO 2 4%, dispersant 1.0%, defoamer 0.5%, leveling agent 0.5%, xylene 5%, ethyl acetate 9%. The components of component B and their weight percentages are as follows: 90% of aminosilane, 5% of butyl acetate, and 5% of dibutyltin dilaurate. The weight ratio of component A and component B is 10:3.5.

no. 3 example

[0112] The third embodiment differs from the second embodiment in that the component ratios and weight ratios of component A and component B are different. The paint consists of component A and component B. Wherein the components of component A and their weight percentages are as follows: 25% aliphatic epoxy resin, 50% alkoxy functional polysiloxane resin, 6% titanium dioxide, 2% talcum powder, nano TiO 2 6%, dispersant 1.0%, defoamer 0.5%, leveling agent 0.5%, ethyl acetate 9%. The components of component B and their weight percentages are as follows: 90% of aminosilane, 5% of butyl acetate, and 5% of dibutyltin dilaurate. The weight ratio of component A and component B is 10:4.

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Abstract

The invention discloses a preparation method of a nanometer composite epoxy polysiloxane coating solidified at room temperature, and the method comprises the following steps: (1) preparing a component A; (2) preparing a component B; (3) weighing and proportioning; and (4) preparing the coating: mixing the component A and the component B in a certain proportion to obtain the coating. The inventionalso discloses a coating which is obtained by implementing the preparation method of the nanometer composite epoxy polysiloxane coating solidified at room temperature. The method provided by the invention has the advantages of simple manufacture technology, low cost and high efficiency. The coating provided by the invention can be cured into a film at constant temperature and is convenient to use, no heat sources are needed, the energy consumption is lowered, and the coating has better corrosion resistance and ultraviolet ray aging resistance; the service life is greatly prolonged; and the coating is especially suitable for the anticorrosion requirements of large industrial steel structures, such as offshore oil platforms, oil tanks, ship superstructures, bridges and the like.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a preparation method of nanocomposite epoxy polysiloxane coating cured at room temperature and the coating prepared by the method. Background technique [0002] With the increasing demand for petroleum energy, the development and exploration of petroleum and natural gas are gradually moving from land to sea. The offshore oil platform is an important device to guarantee the development of offshore oil. Due to the long-term presence in the marine environment, the offshore oil platform will be severely corroded by the harsh marine environment, which is equivalent to the C5-M category in the ISO 12944-5 corrosion environment classification, namely The harshest and most complex corrosive environments. Therefore, to protect the long-term safe production of oil production platforms, anti-corrosion is an important and necessary work. Coatings used for large-scale steel structures su...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D163/00C09D7/12B05D1/38
Inventor 施利毅尧华杭建忠孙小英
Owner 上海华晖新材料科技宿迁有限公司
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