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Production process of high-strength environment-friendly particle board

A production process and particle board technology, used in wood processing appliances, household components, flat products, etc., can solve problems such as human health hazards and formaldehyde poisoning, and achieve the effects of strong waterproof and fireproof performance, long service life and good thermosetting.

Pending Publication Date: 2021-06-25
澳森木业孝感有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Insufficiency of the existing technology: Formaldehyde is used in the existing environmentally friendly particle boards. In rooms where the formaldehyde exceeds the standard, it will cause formaldehyde poisoning and cause harm to the human body.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Table 1: Performance indicators of zero-formaldehyde moisture-proof particle board

[0047] Test items Test results Moisture content / % 6.8 In-board density deviation / % -1.5，+4.5 Static bending strength / (MPa) 14.8 Elastic modulus / (MPa) 2230 Internal bonding strength / (MPa) 0.57 Surface bonding strength / (MPa) 0.98 2h water absorption thickness swelling rate / % 6.7 Formaldehyde emission / (mg / m3) 0.043

[0048] Test items Test results Moisture content / % 6.8 Board density deviation / %-1.5, +4.5 Static bending strength / (MPa) 14.8 Elastic modulus / (MPa) 2230 Internal bonding strength / (MPa) 0.57 Surface bonding strength / (MPa )0.982h water absorption thickness expansion rate / %6.7 formaldehyde release / (mg / m3)0.043

Embodiment 2

[0050] Table 2: Test data of PMDI ecological glue:

[0051] Test items Test results Exterior brown liquid Viscosity(25℃) / (mPa·s) 206 Isocyanate content (-NCO) / % 31.14 Hydrolyzed Chlorine / % 0.04 acidity / % 0.0034 Density(25℃) / (g / cm^3) 1.233 Iron content / (ug / g) 3

[0052] Product name: Polymethylene polyphenylisocyanate

[0053] Test items Test results Appearance Brown liquid Viscosity (25°C) / (mPa s)206 Isocyanate content (-NCO) / %31.14 Hydrolyzed chlorine / %0.04 Acidity / %0.0034 Density (25°C) / (g / cm^ 3) 1.233 iron content / (ug / g)3

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PUM

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Abstract

The invention relates to a production process of a high-strength environment-friendly particle board. Raw materials are subjected to slicing, flaking, drying, screening, adhesive mixing, laying, pre-pressing, hot-pressing, after-treatment and the like. According to the production process of the high-strength environment-friendly particle board, the prepared environment-friendly particle board finished product has the advantages of being free of formaldehyde, environmentally friendly, good in thermosetting performance, high in waterproofing and fireproofing performance, long in service life, high in strength, not prone to deformation and the like.

Description

technical field [0001] The invention belongs to the technical field of wood-based panels, and more specifically relates to a production process of high-strength and environment-friendly particle panels. Background technique [0002] Moisture-proof board is also called environmental protection particle board, particle board, which is a wood-based board made of wood or other lignocellulosic materials, glued under heat and pressure after applying adhesive. Environmentally friendly particle board has strong moisture-proof performance and a small expansion coefficient after absorbing water. It is widely used as raw materials for cabinets and bathroom cabinets and other cabinet products with humid environments. [0003] Insufficiency of the existing technology: the existing environmental protection particle boards all use formaldehyde, which will cause formaldehyde poisoning in the room where the formaldehyde exceeds the standard, and cause harm to the human body. Contents of th...

Claims

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Application Information

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IPC IPC(8): B27N3/02B27N3/00B27N3/08
CPCB27N3/002B27N3/02B27N3/08
Inventor 朱勇许勇波王正池
Owner 澳森木业孝感有限责任公司
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