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Method for producing particle board by adopting flame-retardant composite urea resin

Active Publication Date: 2017-01-11
广西横县新威林板业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The adhesive prepared by the above-mentioned patent has no flame-retardant effect, and the urea-formaldehyde resin glue is only the latex modified by the silane coupling agent added to the late reaction of the synthesis of urea-formaldehyde resin to achieve the purpose of introducing Si-O bonds, so that the final The synthetic urea-formaldehyde resin adhesive can form Si-O-Si bonds in the process of drying and forming a film, which improves the surface sizing and increases the mechanical strength of the latex film, but it does not improve the performance of the urea-formaldehyde resin adhesive. Flame retardant effect

Method used

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  • Method for producing particle board by adopting flame-retardant composite urea resin

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The method for producing particleboard by adopting flame-retardant composite urea-formaldehyde resin comprises the following steps:

[0062] 1) After simple screening, the waste materials that cannot be used in the process of making multi-layer eucalyptus boards after rotary cutting eucalyptus boards are sent to the planer by the conveyor for shavings, and then sent by the conveyor to the wet shavings silo for transitional storage; The moisture content of wood shavings should be kept below 20% by weight;

[0063] 2) The wet shavings are sent to the drum dryer by the conveyor for drying, so that the moisture content of the shavings is below 10% by weight;

[0064] 3) Separate the dried shavings to separate the veneer; separate metal and sand;

[0065] 4) After the dried shavings are screened and sorted, the dry shavings of the surface core layer with a length of less than 2 cm are sent to the dry shaving material transition warehouse of the surface core layer by the con...

Embodiment 2

[0085] The method for producing particleboard by adopting flame-retardant composite urea-formaldehyde resin comprises the following steps:

[0086] 1) After simple screening, the waste materials that cannot be used in the process of making multi-layer eucalyptus boards after rotary cutting eucalyptus boards are sent to the planer by the conveyor for shavings, and then sent by the conveyor to the wet shavings silo for transitional storage; The moisture content of wood shavings should be kept below 20% by weight;

[0087] 2) The wet shavings are sent to the drum dryer by the conveyor for drying, so that the moisture content of the shavings is below 10% by weight;

[0088] 3) Separate the dried shavings to separate the veneer; separate metal and sand;

[0089] 4) After the dried shavings are screened and sorted, the dry shavings of the surface core layer with a length of less than 2 cm are sent to the dry shaving material transition warehouse of the surface core layer by the con...

Embodiment 3

[0108] The method for producing particleboard by adopting flame-retardant composite urea-formaldehyde resin comprises the following steps:

[0109] 1) After simple screening, the waste materials that cannot be used in the process of making multi-layer eucalyptus boards after rotary cutting eucalyptus boards are sent to the planer by the conveyor for shavings, and then sent by the conveyor to the wet shavings silo for transitional storage; The moisture content of wood shavings should be kept below 20% by weight;

[0110] 2) The wet shavings are sent to the drum dryer by the conveyor for drying, so that the moisture content of the shavings is below 10% by weight;

[0111] 3) Separate the dried shavings to separate the veneer; separate metal and sand;

[0112] 4) After the dried shavings are screened and sorted, the dry shavings of the surface core layer with a length of less than 2 cm are sent to the dry shaving material transition warehouse of the surface core layer by the con...

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Abstract

The invention discloses a method for producing particle board by adopting flame-retardant composite urea resin. The method comprises the steps of material preparation, drying, debarking, sand removing, sorting, grinding, glue blending, hot pressing molding and the like. The key points of the production method disclosed by the invention are that melamine modified urea resin is adopted as a main material of an adhesive and is added with oxidized starch to form a viscous compound, polyvinyl alcohol is taken as a toughening agent, hydrogenated rosin is taken as an antioxidant, polyisocyanate is taken as a curing agent, isobutyl triethoxy silane is taken as a bridging agent, phenolated lignin is taken as a formaldehyde catcher and a flame retardant is also added to prepare the flame-retardant composite urea resin; the composite urea resin has the advantages of low formaldehyde residual volume and good flame retardance; by internal heat absorption reaction, the combustion temperature is reduced, so the produced particle board is low in formaldehyde residual volume and is effectively flame-resistant when a fire occurs.

Description

technical field [0001] The invention belongs to the field of artificial board manufacture, in particular to a method for producing particle boards by using flame-retardant composite urea-formaldehyde resin. Background technique [0002] Particleboard is an important board type in wood-based panels. Compared with other board types, its production investment is relatively small, energy consumption is small, cost is low, and the requirements for raw material quality are not high. Three leftovers, fast-growing materials, recycling waste Both wood and some non-wood materials can be used as raw materials for particle boards, so China has unique advantages in developing the particle board industry in China where wood resources are scarce. The interior of the particleboard is granular with a cross-staggered structure, the performance of each part is basically the same, and the lateral load-bearing capacity is good; the surface of the particleboard is smooth, the texture is lifelike,...

Claims

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Application Information

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IPC IPC(8): B27N3/02B27D1/04B27L11/02B27N1/00B27N1/02B27N3/00B27N3/10B27N3/18C09J11/04C09J11/06C09J11/08C09J161/32
CPCB27D1/04B27L11/02B27N1/00B27N1/0209B27N3/002B27N3/02B27N3/10B27N3/18C09J11/04C09J11/06C09J11/08C09J161/32
Inventor 陈正照
Owner 广西横县新威林板业有限公司
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