Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of flame retardant particleboard

A technology of particleboard and shavings, which is applied in the direction of manufacturing tools, flat products, pretreatment of molding materials, etc., and can solve problems such as differences

Active Publication Date: 2022-03-15
NANJING FORESTRY UNIV
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a big difference in the preparation process between wood-plastic composites and particleboard. In addition, the influence of the acidity and alkalinity of the flame retardant on the curing performance of the adhesive needs to be considered in the preparation of particleboard.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) The shavings are sent into the dryer for drying until the moisture content is 2-4%;

[0018] (2) Adhesive preparation: Weigh the curing agent and urea-formaldehyde resin adhesive according to the solid mass of the curing agent and urea-formaldehyde resin adhesive at a ratio of 1:100, add the curing agent to deionized water to form a 20-25% aqueous solution, Then add in the urea-formaldehyde resin adhesive, stir evenly, obtain the prepared urea-formaldehyde resin adhesive;

[0019] (3) Flame retardant preparation: Weigh the modifier and ammonium polyphosphate according to the mass ratio of modifier and ammonium polyphosphate 4:10, add it to the ethanol solution, stir in a water bath at 20-40°C until a uniform suspension is obtained liquid, vacuum-dried, ground, and sieved to obtain a modified ammonium polyphosphate solid powder with a size less than 180 μm;

[0020] (4) Shaving sizing and paving: Weigh the shavings of step (1), the urea-formaldehyde resin adhesive p...

Embodiment 2

[0025] (1) The shavings are sent into the dryer for drying until the moisture content is 2-4%;

[0026] (2) Adhesive preparation: Weigh the curing agent and urea-formaldehyde resin adhesive according to the solid mass of the curing agent and urea-formaldehyde resin adhesive at a ratio of 1.5:100, add the curing agent to deionized water to form a 20-25% aqueous solution, Then add in the urea-formaldehyde resin adhesive, stir evenly, obtain the prepared urea-formaldehyde resin adhesive;

[0027] (3) Preparation of flame retardant: Weigh the modifier and ammonium polyphosphate according to the mass ratio of modifier and ammonium polyphosphate 5:10, add them to the ethanol solution, and stir in a water bath at 20-40°C until a uniform suspension is obtained liquid, vacuum-dried, ground, and sieved to obtain a modified ammonium polyphosphate solid powder with a size less than 180 μm;

[0028] (4) Shaving sizing and paving: Weigh the shavings of step (1), the urea-formaldehyde resin...

Embodiment 3

[0033] (1) The shavings are sent into the dryer for drying until the moisture content is 2-4%;

[0034] (2) Adhesive preparation: Weigh the curing agent and urea-formaldehyde resin adhesive according to the solid mass of the curing agent and urea-formaldehyde resin adhesive at 2:100, add the curing agent to deionized water to form a 20-25% aqueous solution, Then add in the urea-formaldehyde resin adhesive, stir evenly, obtain the prepared urea-formaldehyde resin adhesive;

[0035] (3) Flame retardant preparation: Weigh the modifier and ammonium polyphosphate according to the mass ratio of the modifier and ammonium polyphosphate 6:10, add them to the ethanol solution, and stir in a water bath at 20-40°C until a uniform suspension is obtained liquid, vacuum-dried, ground, and sieved to obtain a modified ammonium polyphosphate solid powder with a size less than 180 μm;

[0036] (4) Shaving sizing and paving: Weigh the shavings of step (1), the urea-formaldehyde resin adhesive pr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
strengthaaaaaaaaaa
sizeaaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a flame-retardant particle board, which relates to the field of artificial boards. The preparation method of the flame-retardant particleboard comprises firstly drying the particles to a moisture content of 2-4%, and then preparing a urea-formaldehyde resin adhesive and preparing a modified flame retardant. Weigh the shavings, the prepared urea-formaldehyde resin adhesive and the modified flame retardant according to the mass ratio. While stirring the shavings, add the prepared urea-formaldehyde resin adhesive and modified flame retardant in sequence, stir evenly, and then perform paving, pre-pressing, hot pressing, cooling, trimming, and sanding to obtain a flame-retardant particle board. In the flame-retardant particleboard prepared by the invention, the flame-retardant is uniformly dispersed, the flame-retardant performance is improved, and the physical and mechanical properties of the flame-retardant particleboard can be guaranteed at the same time. The method has no adverse effect on the curing of the urea-formaldehyde resin adhesive, and can quickly adapt to the existing particle board production flow and process.

Description

technical field [0001] The invention discloses a method for preparing a flame-retardant particle board, in particular relates to a particle board treated with modified ammonium polyphosphate, and belongs to the field of artificial boards. Background technique [0002] Particleboard is a type of man-made board made by processing wood or non-wood plant fiber raw materials into shavings (or scraps), applying adhesives (and other additives), forming blanks and hot pressing. In 2018, my country's particleboard output was 27.32 million m 3 , mainly used in furniture, cabinets, custom wardrobes, wall panels and other occasions. Particleboard is a combustible material, and its flammability can easily lead to fires. The flame-retardant treatment of particleboard can effectively improve the flame-retardant performance of particleboard, and expand the function and application range of particleboard. [0003] The flame retardant treatment of particleboard is mainly carried out in the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B27N1/02B27N3/02B27N3/10B27N3/18
CPCB27N1/0209B27N3/02B27N3/10B27N3/18
Inventor 潘明珠张帅梅长彤徐信武黄润州
Owner NANJING FORESTRY UNIV