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Special multifunction filler for wood production and its blending process

A multi-functional, wood-based technology, applied in the field of adhesive fillers, to achieve the effects of improving pre-pressing performance, improving finished product indicators, and improving cold bonding fastness

Inactive Publication Date: 2004-03-03
SHANGHAI YINGXIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] b. Significantly improve the pre-pressing performance of plywood, solve the problem of synchronizing the instant viscosity change curve of the same glue, and the pre-pressing bonding strength is enough to overcome the mechanical impact in automatic continuous production

Method used

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  • Special multifunction filler for wood production and its blending process
  • Special multifunction filler for wood production and its blending process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Formula ratio: A material 55; B material 2; C material 32; D material 1; E material 1.5; F material 4; G material 4.5. Take the production of filler 1000Kg as an example, the implementation method is as follows:

[0035] 1. Take 400kg of material A calcium-based bentonite and mix it with 20kg of material B sodium carbonate, grind it for about 30 minutes, store it naturally for more than 3 days, fully carry out ion exchange and sodiumization, and then dry and grind it into artificial sodium carbonate. The degree is above 120 mesh.

[0036] 2. Grind the remaining 150kg of material A to be more than 120 mesh, and the wood flour of material C is passed through a sieving machine to obtain a fine powder of more than 80 mesh.

[0037] 3. Transfer other materials in the formula: 10kg of melamine, 15kg of adipic acid, 40kg of urea, and 45kg of oxalic acid, together with the aforementioned materials, to a high-speed rotary gravity-free mixer, shear and stir for about 20-30 minut...

Embodiment 2

[0041] Formula ratio: A material 65; B material 4; C material 16; D material 3; E material 1; F material 5; G material 6. Taking the production of filler 1000Kg as an example, the implementation mode is similar to that of Example 1, and the process is omitted.

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Abstract

A multifunctional filler dedicated for woodworking industry is prepared from Ca-base bentone, sodium carbonate, wood powder or strew-stalk powder, melamine, adipic acid, urea and oxalic acid through mixing 60-80% of Ca-base bentone with sodium carbonate, grinding, laying aside for at least 3 days, drying, grinding by 120 meshes, and mixing with others by high-speed shearing and stirring. Its advantages are high quality of plywood and low cost.

Description

1. Technical field: [0001] The invention relates to an adhesive filler, and in particular discloses a special multifunctional filler for wood industry, which is used in the adhesive of wood-based panel manufacturing—urea-formaldehyde resin glue, as a new generation of functional filler. 2. Background technology: [0002] Urea-formaldehyde resin glue is a thermosetting polymer adhesive material widely used in the man-made plywood manufacturing industry, but it is limited by the synthesis conditions and the storage stability of the produced glue solution. The commercially available resin glue solution is very thin, with a water content of about 50 % up and down, it is more difficult to use directly. Since the advent of urea-formaldehyde resin glue in the domestic and foreign plywood industry in the 1960s, flour processed from agricultural products wheat has been added to the glue as a filler to increase the consistency and initial viscosity, so as to reduce the penetration of ...

Claims

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Application Information

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IPC IPC(8): C09J11/08
Inventor 胡飞
Owner SHANGHAI YINGXIANG IND
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