Dry method for manufacturing fiber board through cow dung

A fiberboard and cow dung technology, applied in applications, household components, flat products, etc., can solve the problems of high cost of fiberboard, unfavorable environmental protection, etc., and achieve the effect of simple preparation method, waste recycling and low cost

Active Publication Date: 2016-01-13
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for preparing fiberboard by dry method of cow dung, which is used to solve the existing problems of high cost of preparing fiberboard and being unfavorable for environmental protection

Method used

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  • Dry method for manufacturing fiber board through cow dung
  • Dry method for manufacturing fiber board through cow dung
  • Dry method for manufacturing fiber board through cow dung

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: a kind of method for preparing fiberboard with cow dung dry method, comprises the steps:

[0015] Step1, wash 5 times with distilled water and 15g of cow dung after cleaning with bamboo vinegar; then filter, dry, pulverize and sieve to obtain 1mm fiber;

[0016] Step2. Dissolve the NaOH solid in distilled water, stir the prepared solution and fiber evenly at room temperature, and then put it into a drying oven for activation. The activation temperature is 150°C for 30 minutes; the mass ratio of NaOH solid to distilled water is 1:1;

[0017] Step3. After adding MDI ecological glue to the fiber obtained in Step2; put it into a high-speed mixer and mix it, condition: 140r / min for 7min; then add paraffin emulsion and stir, condition: 140r / min for 16min; then dry it to make it contain water The rate is 7%; wherein, MDI ecological glue accounts for 6% of the mixture quality of fiber and MDI ecological glue, and paraffin emulsion accounts for 1% of the mixture qu...

Embodiment 2

[0023] Embodiment 2: a kind of method for preparing fiberboard with cow dung dry method, comprises the steps:

[0024] Step1, wash 6 times with distilled water Cow manure 15g after cleaning with bamboo vinegar liquid; Then filter, dry, pulverize and sieve to obtain the fiber of 5mm;

[0025] Step2. Dissolve the NaOH solid in distilled water, stir the prepared solution and fiber evenly at room temperature, and then put it into a drying oven for activation. The activation temperature is 150°C for 30 minutes; the mass ratio of NaOH solid to distilled water is 1:1;

[0026] Step3, Step3, after adding MDI ecological glue to the fiber obtained in Step2; put it into a high-speed mixer and mix it, condition: 140r / min for 7min; then add paraffin emulsion and stir, condition: 140r / min for 16min; then dry it Its water content is 12%; Among them, MDI ecological glue accounts for 10% of the mixture quality that fiber and MDI ecological glue forms, and paraffin emulsion accounts for 2% of t...

Embodiment 3

[0032] Embodiment 3: a kind of method for preparing fiberboard with cow dung dry method, comprises the steps:

[0033] Step1, wash 6 times with distilled water and 15g of cow dung after cleaning with bamboo vinegar; then filter, dry, pulverize and screen to obtain 3mm fiber;

[0034] Step2. Dissolve the NaOH solid in distilled water, stir the prepared solution and fiber evenly at room temperature, and then put it into a drying oven for activation. The activation temperature is 150°C for 30 minutes; the mass ratio of NaOH solid to distilled water is 1:1;

[0035] Step3. After adding MDI ecological glue to the fiber obtained in Step2; put it into a high-speed mixer and mix it, condition: 140r / min for 7min; then add paraffin and stir, condition: 140r / min for 16min; then dry it to make the moisture content 10%; wherein, MDI ecological glue accounts for 7% of the mixture quality of fiber and MDI ecological glue, and paraffin accounts for 1.5% of the mixture quality of fiber, MDI ec...

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
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PUM

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Abstract

The invention relates to a dry method for manufacturing a fiber board through cow dung, and belongs to the field of environmental protection materials. According to the method, the cow dung is cleaned through bamboo vinegar and then cleaned through a neutral cleaning solution; the cow dung is filtered, dried, crushed and screened to obtain fibers; NaOH solid is dissolved in distilled water to obtain a solution, and the solution and the fibers are evenly stirred at the normal temperature and then placed in a drying case to be activated; after ecological adhesives without formaldehyde is added, the solution and the fibers are placed in a high-speed mixer to be mixed, and then stirring is conducted after waterproof agents are added; drying is then carried out to enable the water content of the fibers to be 7%-12%; the fibers are evenly laid and subjected to slab pre-pressing; the obtained fibers are subjected to hot pressing; and after demolding, the fiber board is obtained after 3-5 days of room temperature cooling. The manufacturing method is simple and low in cost, continuous production can be easily achieved, and the product quality is stable; the obtained board has no black spots or cracks and is free of bubbling, pollution, corrosion and fracturing, and the static bending intensity and the internal combination strength of the board meet national standards; the raw materials are waste, so that reutilization of the waste is achieved.

Description

technical field [0001] The invention relates to a method for preparing fiberboards by a dry method of cow dung, which belongs to the field of environmental protection materials. Background technique [0002] At present, the commonly used fibers mainly include wood chips, bagasse, straw, etc. The wood chips used are not secondary raw materials. If a large amount of wood chips are used as raw materials, the cost will increase, which is not conducive to environmental protection. The environmentally friendly lightweight cow dung fiberboard is mainly made of Plant fiber material made of plant fiber separated from cow dung. The performance of this type of material mainly depends on the moisture content of the fiber, the dosage, the three parameters of hot pressing, and the use of additives. Contents of the invention [0003] The invention provides a method for preparing fiberboards by using a dry method of cow dung to solve the existing problems of high cost and unfavorable env...

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
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/04B27N1/02B27N3/12
CPCB27N3/02
Inventor 韩新宇史建武谢宇琦刘树根
Owner KUNMING UNIV OF SCI & TECH
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