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Nano composite modified melamine-formaldehyde abrasion-resisting resin and preparation method thereof

A melamine formaldehyde and nanocomposite technology, applied in building structure, paper, construction and other directions, can solve the problems of insufficient wear resistance, cost reduction, shortened storage period, etc., and achieve good wear resistance, clear and stable patterns good effect

Inactive Publication Date: 2011-10-19
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The service life of the wooden floor is closely related to the wear resistance of the surface. The traditional wooden floor is composed of wear-resistant paper, decorative paper impregnated with melamine formaldehyde resin, substrate, and balance paper. The wear resistance depends on the uppermost wear-resistant paper, but good The price of wear-resistant paper is high, resulting in high cost of wood flooring, and poor wear-resistant paper will result in short product life and easy damage
Although melamine formaldehyde resin has a certain degree of wear resistance, as a facing material for wooden floors, its wear resistance is not enough
The decorative paper produced with this impregnated resin has good abrasion resistance. Since the impregnated resin omits caprolactam as a raw material, the cost is reduced. However, the lack of caprolactam will easily lead to a decrease in resin stability and a shorter storage period.

Method used

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Effect test

preparation example Construction

[0023] In the preparation method, the reaction kettle adopts a reaction kettle with controllable temperature and a stirrer, the stirring speed used in steps ①②③④⑤ is 60-80 rpm, and the stirring speed used in step ⑥ is 100-200 rpm; the reaction time For: step ③ 80-100 minutes, step ④ 20-30 minutes, step ⑤ 20-30 minutes, step ⑥ 20-30 minutes.

[0024] The present invention is further clarified in conjunction with the following specific examples, but the present invention is not limited thereto.

Embodiment 1

[0026] Mix nano-alumina and nano-silicon dioxide at a mass ratio of 1:1 to form a nano-composite, and set aside; mix ethanol and diethylene glycol at a volume ratio of 2:1, set aside; 30 parts of water and 150 parts of formaldehyde with a concentration of 37% were added to the reaction kettle, and at the same time, the speed of the agitator was controlled at 65 rpm, and the pH was adjusted to 8.9 with an appropriate amount of 10% sodium hydroxide solution, and the temperature began to rise to 68 ℃, heat preservation and stirring for 5 minutes; at the end of heat preservation, add 100 parts of melamine, start to heat up to 85 ℃, heat preservation and stirring for 96 minutes; then add 43 parts of a mixture of ethanol and diethylene glycol, and continue to react for 25 minutes; then add 0.2 parts of polyacrylamide, Continue to react for 30 minutes; then add 20 parts of the nanocomposite, control the stirrer speed to 160 rpm, continue to stir for 20 minutes, and lower the temperatu...

Embodiment 2

[0028] Nano-alumina and nano-silicon dioxide treated with coupling agent KH-550 are made into a nano-composite at a mass ratio of 2:1 for later use; respectively add 100 parts of water, 200 parts of formaldehyde with a concentration of 36%, while controlling the speed of the agitator to 80 rpm, adjusting the pH to 9.1 with an appropriate amount of 20% sodium carbonate solution, starting to heat up to 60°C, and stirring for 10 minutes; after the heat preservation, add 120 30 parts of melamine, began to heat up to 92 ° C, and kept stirring for 80 minutes; then added 30 parts of glycerol and continued to react for 20 minutes; then added 2 parts of sodium carboxymethyl cellulose and continued to react for 22 minutes; then added 30 parts of nanocomposites to control The rotation speed of the stirrer is 100 rpm, and the stirring is continued for 25 minutes, and the temperature is lowered to below 40° C. to prepare the nanocomposite modified melamine formaldehyde wear-resistant resin....

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Abstract

The invention discloses a nano composite modified melamine-formaldehyde abrasion-resisting resin and a preparation method thereof. The resin is mainly prepared from a mixture of nano alumina and nano silica, melamine, water, formaldehyde, a stabilizer and an alcohol substance by process steps of mixing, warming polycondensation and cooling discharging. The production method of the modified melamine-formaldehyde abrasion-resisting resin prepared by using the method is very simple and product property is stable; and decorative paper impregnated with the resin still remains the patterns of the surface of the original paper. The resin can be used for the production of impregnated glue film paper facing artificial boards and impregnated paper laminated wood floors, and the wear resistance of the resin reaches 4000 turns.

Description

technical field [0001] The invention belongs to the technical field of preparation of decorative paper or decorative board impregnated adhesive, and more specifically relates to a formulation of a nano-composite modified melamine-formaldehyde wear-resistant resin and a preparation method thereof. Background technique [0002] Melamine formaldehyde resin has the advantages of high bonding strength, good water resistance, high transparency and gloss, and is often used as an impregnating resin to produce various decorative papers and decorative panels. It is an important decorative material for interior decoration and furniture finishes. With the improvement of people's living standards, laminate flooring (impregnated paper laminated wood flooring) has gradually replaced the traditional interior floor decoration materials - cement or ceramic tiles, and has become the main product with the largest share in my country's wood flooring market. The service life of the wooden floor i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G12/32C08K13/06C08K9/00C08K3/22C08K3/36D21H17/51E04F15/10
Inventor 林巧佳陈奶荣曾月鸿
Owner FUJIAN AGRI & FORESTRY UNIV
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