Preparation process of bicomponent castor oil polyurethane waterproof coating

A polyurethane waterproofing and preparation process technology, applied in the coating and other directions, can solve the problems of difficulty in isocyanate moisture absorption and curing, affecting the adhesion of the film coating to the substrate, and the appearance of the film coating is not good. Layer performance, improve appearance, good decorative effect

Active Publication Date: 2012-04-18
湖北蓝盾之星科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the surface is cured, the diffusion of water to the interior of the coating film is hindered, making it difficult to absorb moisture and cure the remaining isocyanate in the coating film, and the system takes a long time to dry.
In addition, because the bubbles produced by moisture absorption and curing inside the coating film are not easy to discharge, the apparent state of the film coating is not good, and it also affects the adhesion of the film coating to the substrate.

Method used

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  • Preparation process of bicomponent castor oil polyurethane waterproof coating
  • Preparation process of bicomponent castor oil polyurethane waterproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021]White exposed waterproof coating: the specific ratio is: component A: castor oil 20.0%, 2,4-toluene diisocyanate 38.07%, xylene 8.6%, azobisisobutyronitrile 0.2%; component B: two Glycol 8.0.%, titanium dioxide 15.5%, talcum powder 2.0%, ultramarine 0.05%, coupling agent YB-201A (the titanate coupling agent of Changzhou Yabang Yayu Auxiliary Co., Ltd. can be used) 0.08%, Formic acid methacrylate 7.0%, antioxidant 1010 0.1%, UV-292 0.1%, hydroquinone 0.1%, stannous octoate 0.1%, triethylenediamine 0.1%. Mix component A and component B, add an appropriate amount of diluent, stir evenly, let stand for 30 minutes, cast on the glass template and spray on the steel plate at room temperature, keep the temperature at 30°C for 7 days. The surface drying time of the coating on the glass formwork is 2 hours, and the surface drying time of the coating on the steel plate is 2 hours; the glossiness of the coating on the steel plate is 60.3, and the hardness is 3H; the coating film on ...

Embodiment 2

[0023] White exposed waterproof coating: the specific ratio is: component A: castor oil 30.07%, 2,4-toluene diisocyanate 20.0%, xylene 8.6%, azobisisobutyronitrile 0.2%; component B: two Glycol 8.0.%, titanium dioxide 15.5%, talcum powder 2.0%, ultramarine 0.05%, coupling agent YB-201A (the titanate coupling agent of Changzhou Yabang Yayu Auxiliary Co., Ltd. can be used) 0.08%, Formic acid methacrylate 7.0%, antioxidant 1010 0.1%, UV-292 0.1%, hydroquinone 0.1%, stannous octoate 0.1%, triethylenediamine 0.1%. Mix component A and component B, add an appropriate amount of diluent, stir evenly, let stand for 30 minutes, cast on the glass template and spray on the steel plate at room temperature, keep the temperature at 30°C for 7 days. The surface drying time of the coating on the glass formwork is 3 hours, and the surface drying time of the coating on the steel plate is 2 hours; the glossiness of the coating on the steel plate is 60.4, and the hardness is 3H; the coating film on...

Embodiment 3

[0025] White exposed waterproof coating: the specific ratio is: component A: castor oil 27.0%, 2,4-toluene diisocyanate 14.85%, xylene 4.2%, ethyl acetate 2.1%, azobisisobutyronitrile 0.3% ; Component B: 8.5% diethylene glycol, 16.5% titanium dioxide, 3.0% talcum powder, 0.15% ultramarine blue, coupling agent YB-201A (the titanate coupling of Changzhou Yabang Yayu Auxiliary Co., Ltd. agent) 0.5%, methacrylic acid formic acid 21.8%, antioxidant 1010 0.2%, UV-292 0.3%, hydroquinone 0.2%, stannous octoate 0.2%, triethylenediamine 0.2%. Mix component A and component B, add an appropriate amount of diluent, stir evenly, let stand for 30 minutes, cast on the glass template and spray on the steel plate at room temperature, keep the temperature at 30°C for 7 days. The surface drying time of the coating on the glass formwork is 2 hours, and the surface drying time of the coating on the steel plate is 1.5 hours; the glossiness of the coating on the steel plate is 72.8, and the hardness ...

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Abstract

A preparation process of a bicomponent castor oil polyurethane waterproof coating is characterized in that the coating is obtained by interpenetrating a component A of polyurethane prepolymer and a component B of a colorful color paste system under the action of an initiator and a catalyst; wherein the component A is obtained by allowing castor oil and 2,4-toluene diisocyanate to react in an organic solvent dissolved with an initiator; the component B is obtained by mixing a blending agent, a solid pigment and / or a solid filler with a coupling agent, milling, orderly adding a alkene monomer, a catalyst, a polymerization inhibitor, and a light stabilizer, and stirring uniformly. The coating of the invention has excellent waterproofness, a good apparent state, abundant colors, good decorative effect, adjustable curing time, adjustable film flexibility and hardness, and simple operations.

Description

technical field [0001] The invention relates to a preparation process of a polyurethane waterproof coating, in particular to a preparation process of a two-component castor oil polyurethane waterproof coating. Background technique [0002] Polyurethane (PU-Polyurethane) is the abbreviation of polyurethane, which is a kind of polymer. It is a polymer made of raw materials such as polyisocyanate and polyether polyol or polyester polyol or small molecule polyol, polyamine or water and other chain extenders or crosslinking agents. By changing the type and composition of raw materials, the shape and performance of the product can be greatly changed, and the final product can be obtained from soft to hard. Compared with other polymer coatings, polyurethane has many advantages, such as good mechanical properties of materials, wide range of performance adjustment, and good molding process performance. PU is one of the six most developed synthetic coatings in the world. In terms o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D7/12C09D5/00C08F283/00C08G18/67C08G18/10
Inventor 谭晓明胡远强徐闫郑鑫鲁小龙张盛付争兵
Owner 湖北蓝盾之星科技有限公司
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