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Adhesive composition and bonding method using the same

A technology of adhesives and compositions, applied in the directions of bonding methods, types of adhesives, starch adhesives, etc., can solve problems such as air pollution and loss of raw materials, and achieve the effect of saving curing conditions

Active Publication Date: 2019-11-19
KCC CORP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, when ammonia gas or volatile amine is used as a neutralizing agent for curing, there will be problems of loss of raw materials due to volatilization and induction of air pollution

Method used

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  • Adhesive composition and bonding method using the same
  • Adhesive composition and bonding method using the same
  • Adhesive composition and bonding method using the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0070] Preparation Example 1: Preparation of Urea-Formaldehyde Resin 1

[0071] 340 g of formaldehyde (Formalin: Formaline (37%)) and 126 g of urea (Urea) were added to a 4-necked synthesis flask equipped with a thermometer and a stirring device, and stirred at room temperature while blowing nitrogen gas. Then, after confirming that the liquid phase was clear, 0.8 g of sodium hydroxide (20% aqueous solution) was added. Then, after confirming that the pH reached the level of 8-9, the temperature was gradually raised to 80°C. After maintaining at this temperature for 2 hours, the temperature was lowered to room temperature, and then diluted with 232 g of distilled water. As a result, a urea-formaldehyde resin having a solid content of 36% and a pH of 8.26 was obtained. Here, it was confirmed that the total molar equivalent ratio of formaldehyde to the urea (Urea) was 2:1.

preparation example 2

[0072] Preparation Example 2: Preparation of Urea-Formaldehyde Resin 2

[0073] 511 g of formaldehyde (formalin (37%)) and 126 g of urea (Urea) were added to a 4-neck synthesis flask equipped with a thermometer and a stirring device, and stirred at room temperature while blowing nitrogen gas. Then, after confirming that the liquid phase was clean, 1.0 g of sodium hydroxide (20% aqueous solution) was added. Then, after confirming that the pH reached the level of 8-9, the temperature was gradually raised to 80°C. After maintaining at this temperature for 2 hours, the temperature was lowered to room temperature, and then diluted with 238 g of distilled water. As a result, a urea-formaldehyde resin having a solid content of 36% and a pH of 8.31 was obtained. Here, it was confirmed that the total molar equivalent ratio of formaldehyde to the urea was 3:1.

Embodiment 1

[0075] Add 350kg, the urea-formaldehyde resin composition that makes in the preparation example 1, the molasses (Molasses (80%) of 310kg, the citric acid (Citric acid (98%)) of 30kg, the distilled water of 3800kg, 2kg Silicone waterproofing agent (SI1420Z-KCC) and 3kg of dustproof oil (Dust Oil-Govi Garo217S) were stirred with a mixer for 30 minutes to prepare an adhesive composition. It was confirmed that the solid content of the prepared adhesive was about 9%.

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Abstract

The present invention relates to an adhesive composition and a bonding method using the same. The present invention can provide a bonding method for fibrous materials using the adhesive composition. The adhesive composition of the present invention hardly contains Hazardous substances such as formaldehyde have economical curing conditions, and the high water resistance and surface hardness of processed products can be realized by using the bonding method of the adhesive composition.

Description

technical field [0001] The present invention relates to an adhesive composition and an adhesive method using the same. Background technique [0002] Glass wool used as a non-combustible heat insulating material is a material used to suppress the flow of heat from a high temperature to a low temperature, and it is a heat insulating material whose thermal conductivity at normal temperature is approximately 0.1Kcal / mh°C or less. As far as glass wool is concerned, 6 kinds of glass raw materials other than silica sand are melted at high temperature and fiberized by high-speed rotating force, and then formed into man-made mineral fiber (Man Made Mineral Fiber: MMMF) with a certain shape. Fine fibers continuously form pores, which are used as thermal insulation, heat insulation, and sound-absorbing materials. sound material. [0003] The binder applied to the non-combustible heat insulating material plays the role of suppressing the bending or sagging of glass fibers etc., and al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J11/00C09J103/00C09J5/00
CPCC09J103/02C08K5/3492C08K5/21C09J5/00C09J11/00C09J103/00
Inventor 洪承民李松一金容柱
Owner KCC CORP CO LTD