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Method for making free-form low-density flame-retardant particleboard

A low-density, particleboard technology, applied in special-shaped low-density flame-retardant particleboard, manufacturing free-form low-density particleboard with flame-retardant effect, and manufacturing special-shaped low-density flame-retardant particleboard, which can solve the problem of special-shaped lightweight particleboard product development. And other issues

Active Publication Date: 2021-06-29
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the particleboard and light-weight particleboard products are flat-shaped products prepared by hot-pressing process, but there is little research on the development of special-shaped lightweight particleboard products obtained by different mold shapes

Method used

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  • Method for making free-form low-density flame-retardant particleboard
  • Method for making free-form low-density flame-retardant particleboard
  • Method for making free-form low-density flame-retardant particleboard

Examples

Experimental program
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preparation example Construction

[0021] Since the present invention adopts a new preparation method, by mixing the above materials and applying them to mold heating and forming, compared with the previous process of coating polystyrene on the shaving material, which needs to be pressed, only flat plates can be produced. Compared with particle boards of the same type, the present invention mixes the particle material, polystyrene and foaming agent, so that the foaming of the mixed material can be realized in a further step, and finally the shape that is not limited to the finished product can be made, and a shape corresponding to the mold can be produced. shape material.

[0022] In the mixing of the above materials, the present invention can also introduce PNDH flame retardant, and its chemical structural formula is as follows:

[0023]

[0024] By mixing the flame retardant PNDH into the above-mentioned mixed material, the low-density particle board obtained finally has the flame-retardant performance sui...

experiment example 1

[0032] Mass ratio:

[0033] Wood shavings: expandable polystyrene: water-based emulsion adhesive: flame retardant = 21.4:90:10:10

[0034] Density: 0.25

[0035] Physical properties: Impact strength: 242J / m 2

[0036] Static bending strength: 0.98Mpa

[0037] Average sound insulation: 18dB

[0038] Thermal conductivity: 0.32W(m·K)

[0039] Flame retardant performance: UL-94: V-1

[0040] Oxygen Index: 31.7

experiment example 2

[0042] Mass ratio:

[0043] Wood shavings: expandable polystyrene: water-based emulsion adhesive: flame retardant = 50:85:10:10

[0044] Density: 0.29

[0045] Physical properties: Impact strength: 201J / m 2

[0046] Static bending strength: 1.1Mpa

[0047] Average sound insulation: 16dB

[0048] Thermal conductivity: 0.30W(m·K)

[0049] Flame retardant performance: UL-94: V-1

[0050] Oxygen index: 28.4

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Abstract

A method of making free-form low-density flame-retardant particleboard is provided. The shavings, expandable polystyrene, foaming agent, water-based emulsion adhesive and flame retardant are mixed to form a compound, and the compound is placed in a mold; the mold is heated to foam the compound.

Description

technical field [0001] The invention relates to a method for manufacturing free-form low-density particleboard, in particular to a method for manufacturing free-form low-density particleboard with flame-retardant effect, and also to a method for manufacturing special-shaped low-density flame-retardant particleboard and the special-shaped low-density flame-retardant particleboard. Background technique [0002] In recent years, the particleboard industry has developed rapidly. Particleboard has partially replaced wood and plywood in construction, furniture, ship and vehicle interior decoration, and its application range is also expanding. China has now become a major producer of particleboard in the world, but my country is not yet a powerful producer of particleboard. At present, the density of particleboard products in the domestic market is 0.8g / cm 3 Or so, while low-density particleboard (about 0.25 ~ 0.45g / cm 3 ) also has a wide range of application markets. Lightweight...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/06
CPCB27N3/02B27N3/10B27N3/18
Inventor 姜鹏陈志林李善明
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY