Soybean glue with high friction coefficient, preparation method of soybean glue and application of soybean glue in plate making

A high friction coefficient, soybean gum technology, applied in the preparation of animal glue or gelatin, chemical instruments and methods, adhesives, etc., can solve the problems of reducing the proportion of modified additives, difficult production lines, and high costs, and achieve the best water resistance. performance and weather resistance, solve the difficulty of gluing, and improve the effect of gluing strength

Inactive Publication Date: 2019-08-27
TREEZO NEW MATERIAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Yet the weak point of above-mentioned improved method is: (1) because the price of soy flour is higher than soybean adhesive itself, if solve the problem by increasing the usage amount of soy flour, not only will increase the manufacture of adhesive and wood-based panel cost, and too high a proportion of soybean flour will reduce the proportion of modified additives, thereby affecting the water resistance of soybean glue, and an excessively high proportion of soybean flour will also lead to dry glue phenomenon, which will affect the bonding strength of the board
(2) At present, soybean gum and urea-formaldehyde glue products share the same production line. The current gluing machine equipment improved for soybean glue not only needs to invest a lot of equipment renovation funds, but also the new gluing machine is not compatible with the urea-formaldehyde glue product line. At present In the environment where urea-formaldehyde glue is still the mainstream adhesive product, it is difficult and costly for small enterprises to set up new production lines for soybean glue products

Method used

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  • Soybean glue with high friction coefficient, preparation method of soybean glue and application of soybean glue in plate making

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of preparation method of soybean gum with high coefficient of friction in this embodiment comprises the following steps:

[0036] (1) Add 2.5g of sodium hydroxide and 100g of water into a three-neck round bottom flask, stir for 5 minutes to dissolve the sodium hydroxide, then add 0.5g of sodium silicate, 0.5g of sodium sulfite and 0.2g of urea to the lye, and stir 3min, the temperature is 80-96°C, and the preliminary mixed solution is obtained;

[0037] (2) Add 10 g of defatted soybean powder and 5 g of mica powder to the preliminary mixed solution, stir for 10 minutes, and the temperature is 80 ° C, so that the defatted soybean powder and mica powder are fully dispersed to obtain a mixed solution;

[0038] (3) 0.3g polyamide polyamine-epichlorohydrin (PAE) is prepared into an aqueous solution with a mass concentration of 12.5%, and the polyamide polyamine-epichlorohydrin aqueous solution is added to the mixed solution, and stirred for 10min to obtain solidified...

Embodiment 2

[0042] Adopt the soybean glue board that embodiment 1 prepares, comprise the following steps:

[0043] (I) Take 100 parts by weight of soybean gum prepared in Example 1, add 4 parts by weight of silicone-modified acrylic resin emulsion (glass transition temperature is -15°C to -5°C), stir for 5 minutes, and then add 0.1 part by weight of cypermethrin to prevent insects agent and 0.1 parts by weight of polyvinyl alcohol, stirred for 3 minutes to obtain the finished product modified soybean gum;

[0044] (II) Coating the modified soybean gum on the surface of the poplar veneer, stabilizing the soybean gum through the first cold pressing and the first hot pressing, and obtaining a slab;

[0045] The cold pressing pressure of the first cold pressing is 0.8MPa, and the cold pressing time is 30min; the hot pressing pressure of the first hot pressing is 0.6MPa, the hot pressing temperature is 100°C, and the hot pressing rate is 0.6min / mm;

[0046] (Ⅲ) Sand the slab, and coat the fin...

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Abstract

The invention discloses a soybean glue with a high friction coefficient, a preparation method of the soybean glue and application of the soybean glue in plate making. The soybean glue is prepared from, by weight, 2-3 parts of alkali, 100 parts of water, 0.1-0.3 part of a modification agent, 8-15 parts of soybean flour, 0.65-2.65 parts of inorganic mineral powder, 4-6 parts of organosilicone modified acrylic resin, 0.2-0.4 part of a curing agent, 0.1-3 parts of acid and 0.5-1.5 parts of filler. According to the soybean glue, the application amount of the soybean flour in the soybean glue is lowered but the inorganic mineral powder is added, compared with the soybean flour, the inorganic mineral powder has a higher friction coefficient, when the soybean glue passes through a glue coating roller, the inorganic mineral powder can better drive the soybean glue to evenly coat the surface of a plate, and the problem of difficult glue coating of the soybean glue can be solved. In order to consider the friction coefficient and pre-pressing performance of the soybean glue, the addition amount of the inorganic mineral powder needs to be controlled to account for 8-15% of the total amount of the soybean flour and the inorganic mineral powder.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a soybean glue with a high friction coefficient, a preparation method thereof and an application in board making. Background technique [0002] Soybean adhesive contains a lot of soybean protein, which is a biomacromolecule polymerized by a variety of amino acids, with a large number of amino, carboxyl, hydroxyl, amide and other groups, so it has a good self-lubricating function. This makes it difficult for soybean adhesives to effectively attach to the gluing roller during the gluing process of plywood production, and it is difficult to achieve the amount of glue required by the design during production operations, especially for soybean adhesives with a viscosity lower than 15000mPa.s. [0003] In the prior art, the problem of difficult sizing of soybean gum is mainly solved from two aspects. First, increase the amount of soybean powder in soybean gum: In convent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J133/04C09J129/04C09J11/04C09J11/06B32B7/12B32B37/06B32B37/08B32B37/10B32B37/12
CPCB32B7/12B32B37/06B32B37/08B32B37/10B32B37/1284C08K2003/2241C09J11/04C09J11/06C09J189/00C08L43/04C08L29/04C08K13/02C08K3/34C08K5/21C08K3/22
Inventor 方旭峥徐俊兰文文沈亚伦毕海明
Owner TREEZO NEW MATERIAL TECH GRP CO LTD
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