Non-yellowing ultraviolet light curing abrasion resistant paint and preparation method thereof

A technology of wear-resistant coatings and ultraviolet light, which is applied in the field of ultraviolet light coatings and can solve problems such as yellowing

Active Publication Date: 2013-11-27
CHANGCHUN SANHUA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of yellowing caused by the use of an aromatic ultraviolet resin with a rigid structure as the matri...

Method used

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  • Non-yellowing ultraviolet light curing abrasion resistant paint and preparation method thereof
  • Non-yellowing ultraviolet light curing abrasion resistant paint and preparation method thereof
  • Non-yellowing ultraviolet light curing abrasion resistant paint and preparation method thereof

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preparation example Construction

[0026] The preparation method of the aliphatic urethane acrylate of eighteen functionalities of the present invention comprises as follows:

[0027] Step 1: reacting dipentaerythritol, isobornyl methacrylate, 1,6-hexanediol diacrylate and diisocyanate at 70-80°C to obtain the first intermediate;

[0028] Step 2: reacting the polymer diol, the catalyst and the first intermediate obtained in step 1 at 75-85° C. to obtain the second intermediate;

[0029] Step 3: react pentaerythritol triacrylate with the second intermediate obtained in Step 2 at 70-85° C. to obtain octadecyl-functionality aliphatic urethane acrylate.

[0030] In step one of the present invention, dipentaerythritol, isobornyl methacrylate and 1,6-hexanediol diacrylate are first added to the reactor, and under the protection of nitrogen, the temperature of the reactor is raised to 70-80°C , and then drop diisocyanate in the reaction kettle, the dropping rate is preferably 8 to 17ml / min, after the dropping is comp...

Embodiment 1

[0047] Under nitrogen protection, add 260g of dipentaerythritol, 60g of isobornyl methacrylate, and 75g of 1,6-hexanediol diacrylate into the reaction kettle, heat to 70°C, and drop 1008g of 1,6-hexamethylene diisocyanate, after the dropwise addition, continued to react for 1.5 hours to obtain the first intermediate;

[0048] Add 5,800g of polybutylene adipate (molecular weight: 1,000 Daltons) and 0.2g of dibutyltin dilaurate catalyst to the first intermediate at one time, control the temperature at 75°C, and react for 2 hours to obtain the second intermediate body;

[0049] Add 7.5g of hydroquinone polymerization inhibitor and 1788g of pentaerythritol triacrylate to the second intermediate, control the temperature at 70°C, and react for 1.5 hours to obtain octadecyl-functional aliphatic urethane acrylate.

Embodiment 2

[0051] Under the protection of nitrogen, add 685g of dipentaerythritol, 145g of isobornyl methacrylate, 168g of 1,6-hexanediol diacrylate into the reaction kettle, heat to 80°C, and drop 3750g of di Cyclohexylmethane diisocyanate, after the dropwise addition, continued to react for 3 hours to obtain the first intermediate;

[0052] Add 11220g polybutylene adipate (molecular weight: 4000 Daltons) and 1.1g stannous octoate catalyst to the first intermediate at one time, control the temperature at 85°C, and react for 4 hours to obtain the second intermediate;

[0053] Add 16g of p-hydroxyanisole polymerization inhibitor and 4485g of pentaerythritol triacrylate to the second intermediate, control the temperature at 85°C, and react for 3 hours to obtain octadecyl-functional aliphatic urethane acrylate.

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Abstract

The invention provides a non-yellowing ultraviolet light curing abrasion resistant paint and a preparation method thereof, belongs to the technical field of ultraviolet light paints and aims to solve the problem of yellowing in a conventional ultraviolet light abrasion resistant paint caused by that an aromatic ultraviolet light resin with rigid construction is adopted as a matrix resin. The paint is prepared by the following components in parts by weight: 60 to 80 parts of aliphatic urethane acrylate with eighteen degree of functionality, 0.3 to 0.9 part of flatting agent, 0.2 to 0.5 part of wetting agent, 0.2 to 0.6 part of antifoaming agent, 5 to 11 parts of dipentaerythritol pentaacrylate, 2 to 6 parts of glass powder, 1 to 5 parts of ceramic powder, 1 to 3 parts of polyethylene wax, and 1.8 to 4 parts of photoinitiator. The invention further provides the preparation method of the non-yellowing ultraviolet light curing abrasion resistant paint. The hardness of the non-yellowing ultraviolet light curing abrasion resistant paint is 3 to 5H, and the abrasive resistance is 1.1 to 2.5 mg per hundred laps.

Description

technical field [0001] The invention belongs to the technical field of ultraviolet light coatings, and in particular relates to a non-yellowing ultraviolet light curing wear-resistant coating and a preparation method thereof. technical background [0002] UV-curable wear-resistant coatings are green, environmentally friendly and energy-saving materials because they do not use organic solvents. In addition, the excellent wear resistance of this type of coating makes this type of coating suitable for mobile phones, high-end wear-resistant floor finishes, and hard plastic gold. Oil and other fields have broad application prospects. Li Donglin et al. (Research on Abrasion Resistance of UV-cured Coatings, Coating Industry, 2005, 35(1): 12-15) used difunctionality and hexafunctionality aromatic urethane acrylate and bisphenol A epoxy acrylate as components. Film resin, under the active amine antioxidant, prepared light-cured wear-resistant coating. However, because the wear-resi...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D7/12C08G18/67C08G18/66C08G18/42C08G18/32
Inventor 张振久王振旅蒋舰刘凯蔡龙金朝君陈景玉
Owner CHANGCHUN SANHUA IND
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