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Fire retardant type UV light solidifying polyurethane acrylic acid paint and its preparation method

A polyurethane acrylic and ultraviolet light technology, applied in polyurea/polyurethane coatings, fire-retardant coatings, coatings, etc., can solve the problems of skin irritation, harm to human health, affect the mechanical properties of the system curing rate, and achieve flame retardant. Good performance, delaying the combustion process, and the effect of a wide range of applications

Inactive Publication Date: 2006-01-11
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method realizes the radiation curable halogen-free flame retardant coating, but because it is a linear molecule, it is necessary to add a large amount of functional group acrylate as a crosslinking agent, adjust the viscosity of the system and improve the processing performance, but most acrylate monomers are harmful to the skin It is irritating and harmful to human health; and the addition of acrylate monomers will affect the curing rate of the system and the mechanical properties of the coating

Method used

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  • Fire retardant type UV light solidifying polyurethane acrylic acid paint and its preparation method
  • Fire retardant type UV light solidifying polyurethane acrylic acid paint and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 12.6 grams (0.1 moles) of melamine and 24.5 grams (0.3 moles) of formaldehyde solution (37% mass fraction) in the three-necked flask equipped with mechanical stirrer, reflux condenser and nitrogen protection, after oil bath heating 30 minutes, obtain Prepolymers containing melamine-formaldehyde. After mixing 100 mL of deionized water and 0.4 g of polyethylene glycol 400 evenly, adjust the pH value to 4.6 with acetic acid solution. Raise the temperature to 60°C, add the above-mentioned melamine-formaldehyde-containing prepolymer into the above-mentioned water-polyethylene glycol 400 solution, react for 15 minutes, stop the reaction, quickly cool with ice water, and then add 5.5g of catechol and 0.025g of p-toluenesulfonic acid, the temperature was raised to 95° C., and the reaction was continued for 24 hours with stirring to obtain a melamine-phenolic resin modified polyol. 8 mL of KH-570 coupling agent with a concentration of 0.025 g / mL was added dropwise to the ab...

Embodiment 2

[0037] The same preparation conditions as in Example 1 were adopted, but the diluent butyl acrylate was changed to trimethylolpropane triacrylate (TMPTA), and the amount used was 8.5 mL. The prepared UV-curable coating is sample 2.

[0038] The performance results of the polyurethane acrylate UV-cured coating film are shown in Table 1.

Embodiment 3

[0040] The same preparation conditions as in Example 1 were adopted, but the diluent butyl acrylate was changed to diethylene glycol dimethacrylate (DEGDMA), and the dosage was 8 mL. The prepared UV-curable coating is sample 3.

[0041] The performance results of the polyurethane acrylate UV-cured coating film are shown in Table 1.

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Abstract

A flame-retarding ultraviolet solidified polyurethane-acrylic acid paint is prepared through proportionally mixing the modified diphenylmethane diisocyanate, modified polyol with double bond and containing melamine-phenolic resin, catalyst and active diluent, stirring, heating while reacting to obtain the prepolymer, mixing it with catalyst, optical trigger, active diluent and other assistants, and stirring.

Description

technical field [0001] The invention belongs to the technical field of functional polymer materials, and in particular relates to a flame-retardant ultraviolet-curable polyurethane acrylic coating and a preparation method thereof. Background technique [0002] Resins cured by UV cross-linking have been widely used in more and more fields, especially in the coating industry, graphic art industry and microelectronics industry. It gradually replaces traditional thermally initiated polymerization coatings or adhesives . However, the main defect of this resin is similar to that of traditional synthetic resins, which lies in their flammability, and the common method of preparing flame-retardant materials is to use mechanical mixing to blend flame-retardant substances as additives with resins. However, the addition of a high content of inorganic fillers can also lead to crosslinking difficulties and serious degradation, especially in UV crosslinking systems. [0003] It has been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D5/18
Inventor 杨正龙浦鸿汀
Owner TONGJI UNIV
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