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Composite adhesive for timber, formaldehyde-free shaving board and manufacturing method of formaldehyde-free shaving board

A composite adhesive and aldehyde adhesive technology, which is applied in wood processing appliances, applications, household components, etc., can solve the problems of slow thermal curing efficiency, high adhesive prices, instability and other problems, and can solve production problems. High cost, good market prospects and good water resistance

Inactive Publication Date: 2017-12-15
兰州科天水性科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems existing in the prior art, the present invention provides a composite adhesive for wood, a formaldehyde-free particle board and a manufacturing method thereof, the purpose of which is to solve the problem of slow thermal curing efficiency and high price of the adhesive in the production process of the existing particle board. Unstable and unstable problems

Method used

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  • Composite adhesive for timber, formaldehyde-free shaving board and manufacturing method of formaldehyde-free shaving board
  • Composite adhesive for timber, formaldehyde-free shaving board and manufacturing method of formaldehyde-free shaving board
  • Composite adhesive for timber, formaldehyde-free shaving board and manufacturing method of formaldehyde-free shaving board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Compound Adhesive

[0026] Bio-based formaldehyde-free adhesive (absolutely dry absorbing aldehyde king ECCA) 7g, aromatic isocyanate (M20S) 4g;

[0027] Production method of zero-aldehyde particleboard

[0028] Surface layer: Dry 100g of shavings to a moisture content of 1%, apply 15g of bio-based formaldehyde-free adhesive (ECCA) through a glue mixer, and add 0.8g of liquid waterproofing agent (emulsified paraffin);

[0029] Core layer: Dry 100g of shavings to a moisture content of 1%, apply 7g of bio-based formaldehyde-free adhesive (ECCA), 4g of aromatic isocyanate (M20S), and 0.4g of waterproofing agent (melted paraffin) through a glue mixer, Paving and pre-pressing, hot-pressing under the conditions of temperature 240 degrees, pressure 3.5MPa, hot-pressing factor 5s / mm (continuous press) to obtain a particleboard with a thickness of 18mm.

Embodiment 2

[0031] Compound Adhesive

[0032] Bio-based formaldehyde-free adhesive (FLABO) 6g, isocyanate (WBP) 3g;

[0033] Production method of zero-aldehyde particleboard

[0034] Surface layer: Dry 100g of shavings to a moisture content of 1.5%, apply 13g of bio-based formaldehyde-free adhesive (FLABO) and 1g of liquid waterproofing agent (emulsified paraffin) through a glue mixer;

[0035] Core layer: Dry 100g of shavings to a moisture content of 1.5%, apply 6g of bio-based formaldehyde-free adhesive (FLABO), 3g of aromatic isocyanate (WBP), and 0.5g of water repellent (emulsified paraffin) through a glue mixer, Paving and pre-pressing, hot-pressing under the conditions of temperature 235 degrees, pressure 3.8MPa, hot-pressing factor 6s / mm (continuous press) to obtain a particleboard with a thickness of 18mm.

Embodiment 3

[0037] Compound Adhesive

[0038] Bio-based formaldehyde-free adhesive (absolute dry soybean protein adhesive) 5g, isocyanate (M20R) 2g;

[0039] Production method of zero-aldehyde particleboard

[0040] Surface layer: Dry 100g of shavings to a moisture content of 2%, apply 10g of bio-based formaldehyde-free adhesive (ECCA) and 1.2g of liquid waterproofing agent (emulsified paraffin) through a glue mixer;

[0041] Core layer: Dry 100g of shavings to a moisture content of 2%, apply 5g of bio-based formaldehyde-free adhesive (soybean protein adhesive), 2g of aromatic isocyanate (M20R), and 0.6g of waterproofing agent (emulsified paraffin) through a glue mixer , Paving pre-pressing molding, hot pressing under the conditions of temperature 230 degrees, pressure 4MPa, hot pressing factor 7s / mm (continuous press) to obtain a particleboard with a thickness of 18mm.

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Abstract

The invention discloses a composite adhesive for timber, a formaldehyde-free shaving board and a manufacturing method of the formaldehyde-free shaving board. The composite adhesive for the timber is characterized by comprising, by weight, 4-7 parts of a biological base formaldehyde-free adhesive and 1-4 parts of aromatic isocyanates with absolute alcohol dry as the standard. The shaving board produced through the composite adhesive for the timber does not contain formaldehyde and is good in water resistance, high in mechanical property and good in oil paint adhesiveness; the main adhesive, namely the biological base adhesive, is moderate in cost and relatively stable in price; the composite adhesive is high in heat curing efficiency; and industrialization can be achieved through slight improvement on an existing dry-method shaving board production line, the problem that at present, the production cost of the formaldehyde-free shaving board stays at a high level can be effectively solved, and market prospect is good.

Description

technical field [0001] The invention relates to the field of composite wood-based panels, in particular to a composite adhesive for wood, a formaldehyde-free particle board and a manufacturing method thereof. Background technique [0002] China's particleboard production experience is a repeated process of rising in the 1980s, falling in the 1990s, and rising again in 2000. After the particleboard was abandoned by the market due to poor quality and other reasons, many particleboard companies learned their lessons and introduced foreign advanced production lines and improved technology. The quality of Chinese particleboard has improved significantly, and it has been accepted by the market again. Enterprises have re-selected particleboard as raw material. In recent years, the demand for particleboard in China has been increasing year by year. With the increasing demand for particleboard at home and abroad, and the country's introduction of preferential policies to encourage ...

Claims

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Application Information

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IPC IPC(8): B27N3/00B27N3/02B27N3/08C08L75/04
CPCB27N3/002B27N3/02B27N3/08C08L75/04
Inventor 戴家兵杨华永曾灵
Owner 兰州科天水性科技有限公司
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