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Preparation technology of EPS-based lightweight flame-retardant wood-plastic board

A light-weight, wood-plastic technology, applied in the field of preparation of EPS-based lightweight flame-retardant wood-plastic panels, can solve problems such as limitations, and achieve the effects of isolating heat conduction, increasing oxygen index, and low density

Inactive Publication Date: 2019-09-06
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But both wood and plastic substrates belong to combustibles, this problem limits the application of the board of the present invention, so it becomes particularly critical to study its flame retardancy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0031] Content of each component:

[0032] Expandable polystyrene (30%), shavings (20%), urea-formaldehyde adhesive (30%), melamine phosphate (10%), aluminum hypophosphite (9%), curing agent (1%).

[0033] Preparation:

[0034] First, weigh a certain mass of expandable polystyrene EPS beads and put them on the sieve, then put the sieve over the boiling water pot, mature in steam for 40-50 seconds, take it out and place it at room temperature for 10 hours . Secondly, dissolve the curing agent into the urea-formaldehyde adhesive and put the shavings, melamine phosphate, and aluminum hypophosphite into a low-speed mixer and mix well, then take out the mixture. Put the mature expandable polystyrene beads into a low-speed stirrer to stir slowly, add the urea-formaldehyde adhesive and wood shavings mixture with curing agent into the stirrer in three batches, and add each time first Adhesives are then added to the wood shavings and fire retardant mixture so that the wood shavings ...

example 2

[0036] Expandable polystyrene (30%), shavings (30%), urea-formaldehyde adhesive (20%), melamine phosphate (10%), aluminum hypophosphite (9%), curing agent (1%).

[0037] Preparation:

[0038] First, weigh a certain mass of expandable polystyrene EPS beads and put them on the sieve, then put the sieve over the boiling water pot, mature in steam for 40-50 seconds, take it out and place it at room temperature for 10 hours . Secondly, dissolve the curing agent into the urea-formaldehyde adhesive and put the shavings, melamine phosphate, and aluminum hypophosphite into a low-speed mixer and mix well, then take out the mixture. Put the mature expandable polystyrene beads into a low-speed stirrer to stir slowly, add the urea-formaldehyde adhesive and wood shavings mixture with curing agent into the stirrer in three batches, and add each time first Adhesives are then added to the wood shavings and fire retardant mixture so that the wood shavings and fire retardant stick evenly to th...

example 3

[0040] Expandable polystyrene (30%), shavings (30%), urea-formaldehyde adhesive (30%), melamine phosphate (5%), aluminum hypophosphite (4%), curing agent (1%).

[0041] Preparation:

[0042]First, weigh a certain mass of expandable polystyrene EPS beads and put them on the sieve, then put the sieve over the boiling water pot, mature in steam for 40-50 seconds, take it out and place it at room temperature for 10 hours . Secondly, dissolve the curing agent into the urea-formaldehyde adhesive and put the shavings, melamine phosphate, and aluminum hypophosphite into a low-speed mixer and mix well, then take out the mixture. Put the mature expandable polystyrene beads into a low-speed mixer to stir slowly, add the urea-formaldehyde adhesive and wood shavings mixture with curing agent into the mixer in three batches, and add each time first Adhesives are then added to the wood shavings and fire retardant mixture so that the wood shavings and fire retardant stick evenly to the surf...

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Abstract

The invention provides a preparation method of an EPS-based lightweight flame-retardant wood-plastic board. The method comprises the steps that 1, materials comprising, by mass, 30-60% of expandable polystyrene, 20-60% of wood shavings, 10-30% of an adhesive, 5-10% of melamine phosphate, 4-9% of aluminum hypophosphite and 1% of a curing agent are prepared; 2, small EPS beads are obtained, put intoa sieve and cured for 40-50 seconds in steam and stay at room temperature for 10 hours; the curing agent is dissolved into a urea formaldehyde adhesive, the wood shavings, the melamine phosphate andthe aluminum hypophosphite are put into a low-speed stirrer to be uniformly mixed, and the mixture is taken out; the cured EPS beads are put into the low-speed stirrer to be slowly stirred, and the urea formaldehyde adhesive and wood shaving mixture with the curing agent is added into the stirrer in three batches, so that the wood shavings and a flame retardant uniformly adhere to the surfaces ofthe EPS beads; the EPS beads attached with the wood shavings and the flame retardant are put into a mould, and the mould is put into a drying oven at the temperature of 100-130 DEG C and kept in the drying oven for 55-60 minutes.

Description

technical field [0001] The invention relates to the preparation of wood-plastic boards, in particular to the preparation method of EPS-based lightweight flame-retardant wood-plastic boards. Background technique [0002] Wood-plastic composites are materials composed of wood and thermoplastic or thermosetting materials. Compared with traditional wood materials and plastics, it is a relatively new product. At present, wood-plastic composite materials are developing rapidly, and it is widely used in daily life, such as: construction, doors and windows, floors and so on. [0003] The matrix of general wood-plastic composite materials is polypropylene, polyvinyl chloride, polylactic acid, etc. The matrix used in the present invention is expandable polystyrene (EPS), which can be cured by steam, put into a mold for foaming, and can produce Plates with low density and low quality. [0004] Due to the lack of wood resources, people's demand for wood is increasing day by day, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/228C08L25/06C08L97/02C08L61/24C08K5/3492C08K3/32
CPCC08J9/228C08J9/0028C08J9/0038C08J9/0066C08J2325/06C08J2497/02C08J2397/02C08J2425/06C08J2361/24C08J2461/24
Inventor 李洪飞王迪张胜谷晓昱孙军姜鹏
Owner BEIJING UNIV OF CHEM TECH
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