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Preparation technology for zero-formaldehyde light particle board

A light-weight granule and preparation technology, which is applied in the direction of manufacturing tools, wooden veneer joints, flat products, etc., can solve the problems of formaldehyde poisoning, human body hazards, etc., and achieve strong waterproof ability, high safety, and good thermosetting Effect

Inactive Publication Date: 2019-11-12
广东始兴县华洲木业有限公司
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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 particle boards, and 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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  • Preparation technology for zero-formaldehyde light particle board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Table 1: Performance indicators of zero-formaldehyde moisture-proof particle board

[0048] 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 expansion rate / % 6.7 Formaldehyde emission / (mg / m3) 0.043

Embodiment 2

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

[0051] Product name: Polymethylene polyphenylisocyanate

[0052] 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

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PUM

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Abstract

The invention relates to a preparation technology for a zero-formaldehyde light particle board. According to the technical scheme, the preparation technology for the zero-formaldehyde light particle board is characterized by comprising the production steps that logs are subjected to chipping, flaking, drying and screening, two shaving particles of surface-layer raw materials and core-layer raw materials are prepared, MDI glue, a formaldehyde-free adhesion agent and light packing are added to be mixed, paving, pre-pressing, hot-pressing and after-treatment are conducted, a finished product particle board is prepared, and then sorting and warehousing are conducted. According to the preparation technology for the zero-formaldehyde light particle board, the prepared shaving board finished product has the advantages that the formaldehyde content is zero, green and environmental protection are achieved, the using safety is high, the thermosetting property is good, the waterproof capability is high, the service life is long, and the strength is high.

Description

technical field [0001] The invention belongs to the technical field of wood-based panels, and more specifically relates to a preparation process of a zero-formaldehyde added lightweight particle board. Background technique [0002] Moisture-proof board, also known as particle board, particle board, is a wood-based board that is made of wood or other lignocellulosic materials and glued under heat and pressure after applying an adhesive. Particleboard has strong moisture resistance and a small expansion coefficient after absorbing water. It is widely used as raw materials for cabinets, bathroom cabinets and other cabinet products with humid environments. [0003] Deficiencies in the prior art: Formaldehyde is used in existing particle boards, and in rooms where formaldehyde exceeds the standard, it will cause formaldehyde poisoning and cause harm to the human body. Contents of the invention [0004] Aiming at the deficiencies in the prior art, the purpose of the present inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/08B27N3/02B27N3/00B27N3/10C09J175/04
CPCB27D1/08B27N3/002B27N3/02B27N3/10C09J175/04
Inventor 张凤岚林卫东冉小锋邹明星谭锋明杨振玲
Owner 广东始兴县华洲木业有限公司
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