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Active kaolin modified formaldehyde-free vegetable albumen glue as well as preparation method and application thereof

A technology of active kaolin and vegetable protein glue, applied in the field of active kaolin modified formaldehyde-free vegetable protein glue and its preparation field, can solve the problems of difficult to stabilize formaldehyde emission, low degree of automation, difficult to control the pot life of glue, etc. Industrial production, simple preparation process, and the effect of eliminating formaldehyde release

Inactive Publication Date: 2020-01-14
浙江云峰莫干山地板有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the scheme reported in Chinese patent CN 201410314878.2 "A low-aldehyde blockboard processing technology", the board core still uses urea-formaldehyde resin glue, which cannot prevent the release of free formaldehyde from the source
At present, domestic board core manufacturers have problems such as small scale, low degree of automation, and low degree of standardization of manufacturing processes. If urea-formaldehyde glue is used to manufacture board cores, it is difficult to control the moisture content of raw materials and the pot life of glue. Formaldehyde release The amount is always difficult to stabilize, the bonding strength is also difficult to guarantee, and the water resistance is poor
Some researchers use formaldehyde-free glue to make formaldehyde-free board core, and then make formaldehyde-free blockboard. glue to make blockboard, but the information about the composition and preparation method of soybean protein glue is not disclosed; Chinese patent CN201210578366.8 "an ecological formaldehyde-free blockboard" discloses the use of formaldehyde-free starch glue to make blockboard

Method used

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  • Active kaolin modified formaldehyde-free vegetable albumen glue as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Preparation of activated kaolin:

[0026] In parts by weight, add 1 part of KH560 silane coupling agent and 10 parts of glycerol triglycidyl ether dispersant successively in the reaction kettle, stir for 10 minutes until uniform, and obtain the intermediate, and then mix the intermediate with 100 parts of kaolin in Mix in a high-speed mixer for 15 minutes until uniform, and the activated kaolin is obtained;

[0027] 2) Preparation of active kaolin modified formaldehyde-free vegetable protein glue:

[0028] In parts by weight, 100 parts of water-based crosslinking agent polyamidoamine-epichlorohydrin resin aqueous solution with 5% solid content, 40 parts of high-temperature soybean meal powder, 10 parts of activated kaolin, and sodium lignosulfonate were successively added to the reaction kettle. 2 parts, stirred for 20 minutes until uniform, that is, the activated kaolin modified formaldehyde-free vegetable protein glue is obtained, and the cost of raw materials is ...

Embodiment 2

[0034] The implementation steps are the same as in Example 1, and the high-temperature soybean meal powder in Example 1 is changed to cottonseed protein powder to obtain activated kaolin modified formaldehyde-free vegetable protein glue, and the cost of raw materials is 2100 yuan / ton.

[0035] According to the A-type test piece in 4.17 of GB / T 17657-2013 (the experimental material is 3.2mm poplar veneer), use the method specified in 4.17.5.2.2 to pretreat the test piece (soak in water at 63°C for 3 hours). The prepared active kaolin-modified formaldehyde-free vegetable protein glue was tested for water resistance, and the test result was 1.67MPa.

[0036] Use the above-mentioned active kaolin modified formaldehyde-free vegetable protein glue to roll coat the side of the slats, the glue amount is 350g / sheet, hot press after billet assembly, hot press parameters: front pressure 0.6MPa, side pressure 1.0MPa , the hot pressing temperature is 160°C, and the time is 180 seconds. The...

Embodiment 3

[0039] 1) Preparation of activated kaolin:

[0040] Add 1.5 parts of KH570 silane coupling agent and 12 parts of polyethylene glycol diglycidyl ether dispersant in sequence in the reaction kettle, stir for 30 minutes until uniform, and obtain the intermediate, and then mix the intermediate and 100 parts of kaolin in a high-speed mixer Mix for 20 minutes until uniform, and the activated kaolin is obtained;

[0041] 2) Preparation of active kaolin modified formaldehyde-free vegetable protein glue:

[0042] Add 100 parts of water-based crosslinking agent polyamidoamine-epichlorohydrin resin aqueous solution with 5% solid content, 25 parts of high-temperature soybean meal powder, 20 parts of activated kaolin, and 3 parts of sodium lignosulfonate in the reaction kettle, and stir for 20 minutes to Uniform, that is, the activated kaolin-modified formaldehyde-free vegetable protein glue is obtained, and the raw material cost is 2180 yuan / ton;

[0043] According to the A-type test pi...

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Abstract

The invention provides an active kaolin modified formaldehyde-free vegetable albumen glue as well as a preparation method and application thereof. The active kaolin modified formaldehyde-free vegetable albumen glue is prepared from the following components in parts by weight: 100 parts of a water-based cross-linking agent, 25-50 parts of vegetable protein powder, 10-20 parts of active kaolin and 1-5 parts of sodium lignin sulfonate; wherein the active kaolin is prepared from the following components in parts by weight: 100 parts of kaolin, 0.5-2 parts of a silane coupling agent and 8-12 partsof a dispersing agent.

Description

technical field [0001] The invention belongs to the field of wood processing and manufacturing, and in particular relates to an active kaolin modified formaldehyde-free vegetable protein glue and a preparation method and application thereof. Background technique [0002] Blockboard, commonly known as large core board, is a kind of wood-based board made of wooden strips along the grain direction to form a board core, and the two sides are glued with veneer or plywood blanks. And a large-scale development of a decorative plate. At present, blockboard is mainly made of urea-formaldehyde glue, which has the problem of releasing free formaldehyde. Reducing the formaldehyde emission of blockboard has become a research hotspot in the industry. In the scheme reported in Chinese patent CN 201410314878.2 "A low-aldehyde blockboard processing technology", the board core still uses urea-formaldehyde resin glue, which cannot prevent the release of free formaldehyde from the source. Th...

Claims

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Application Information

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IPC IPC(8): C09J189/04C09J11/04B27D1/06
CPCB27D1/06C08L2205/03C09J11/04C09J189/04C08L97/005C08L79/02C08K9/06C08K3/346
Inventor 沈云芳桂成胜施晓宏唐雨枫陆旭晨敖景伟朱海峰赵建忠刘新有李敏
Owner 浙江云峰莫干山地板有限公司
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