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A kind of preparation method of pyrolysis oil urea-formaldehyde resin organic covering mat

An organic covering and urea-formaldehyde resin technology, applied in the field of landscaping, can solve problems such as low production cost, and achieve the effects of increasing value, strengthening anti-mildew and bacteriostatic properties, and improving plant growth.

Inactive Publication Date: 2019-06-28
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, and propose a method for preparing an organic covering mat made of pyrolysis oil urea-formaldehyde resin, which uses pyrolysis oil urea-formaldehyde resin to bond landscaping waste particles, and heats and presses the prepared thermal pad. Oil-resolving urea-formaldehyde resin organic mulch mat, which has low production cost and good performance, and can be used to improve the pollution of urban bare soil

Method used

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Examples

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Effect test

preparation example Construction

[0025] The preparation method of the pyrolysis oil urea-formaldehyde resin organic covering pad that the present invention proposes comprises the following steps:

[0026] (1) Carry out raw material pretreatment to landscaping waste, obtain the raw material for organic covering mat, comprise the following steps:

[0027] (1-1) After the landscaping waste is crushed, the landscaping waste fragments with a length of 10mm-30mm, a width of 1mm-2mm, and a thickness of 0.5mm-1.0mm are screened out;

[0028] (1-2) drying the landscaping waste fragments in the above step (1-1) to a moisture content of 10% or less, to obtain raw materials for organic mulching pads;

[0029] (2) preparing pyrolysis oil urea-formaldehyde resin, comprising the following steps:

[0030] (2-1) Put 200 parts by mass of formaldehyde, 70-80 parts by mass of urea and 15-20 parts by mass of pyrolysis oil into the reaction kettle at the same time, start the agitator, adjust the pH value to 8.0 with sodium hydrox...

Embodiment 1

[0043] (1) Carry out raw material pretreatment to landscaping waste, obtain the raw material for organic covering mat, comprise the following steps:

[0044] (1-1) After crushing the landscaping waste, screen out the landscaping waste fragments with a length of 10mm-30mm, a width of 1mm-2mm, and a thickness of 0.5mm-1.0mm;

[0045] (1-2) drying the landscaping waste fragments screened in step (1-1) to a moisture content of 10% or below, as raw materials for organic mulching pads;

[0046] (2) preparing pyrolysis oil urea-formaldehyde resin, comprising the following steps:

[0047] (2-1) Put 200 parts by mass of formaldehyde, 70 parts by mass of urea and 15 parts by mass of pyrolysis oil into the reaction kettle at the same time, start the agitator, adjust the pH value to 8.0 with sodium hydroxide solution, and raise the temperature to 90±3 within 30 minutes ℃, keep warm for 20min;

[0048] (2-2) Adjust the pH value to 3.8 with formic acid solution, raise the temperature to 8...

Embodiment 2

[0058] (1) Carry out raw material pretreatment to landscaping waste, obtain the raw material for organic covering mat, comprise the following steps:

[0059] (1-1) After crushing the landscaping waste, screen out the landscaping waste fragments with a length of 10mm-30mm, a width of 1mm-2mm, and a thickness of 0.5mm-1.0mm;

[0060] (1-2) drying the landscaping waste fragments screened in step (1-1) to a moisture content of 10% or below, as raw materials for organic mulching pads;

[0061] (2) preparing pyrolysis oil urea-formaldehyde resin, comprising the following steps:

[0062] (2-1) Put 200 parts by mass of formaldehyde, 80 parts by mass of urea and 20 parts by mass of pyrolysis oil into the reaction kettle at the same time, start the agitator, adjust the pH value to 8.0 with sodium hydroxide solution, and raise the temperature to 90±3 within 40 minutes ℃, keep warm for 30min;

[0063] (2-2) Adjust the pH value to 4.5 with formic acid solution, raise the temperature to 8...

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Abstract

The invention relates to a preparation method of a pyrolysis oil urea-formaldehyde resin organic covering mat, and belongs to the technical field of landscaping. According to the preparation method, landscaping waste is taken as raw materials, landscaping waste pyrolyzate pyrolysis oil is used for preparing pyrolysis oil urea-formaldehyde resin, and the organic covering mat is prepared by gluing the pyrolysis oil urea-formaldehyde resin and the crushed landscaping waste, so that the shifting and loss problems of a traditional organic mat due to blowing and raining are effectively solved, and the life cycle and the environmental protection effect of the organic covering mat are ensured. Furthermore, the organic covering mat can serve as an effective slow release nitrogenous fertilizer, andthe promoting effect on plant growth is improved; phenols substances are added to the pyrolysis oil urea-formaldehyde resin due to the pyrolysis oil, so that the effect of inhibiting weed seeds from germinating and growing is improved; and the organic covering mat has better mildewproof and antibacterial effects, and the aging resistance of the organic covering mat is improved. The organic covering mat can improve the supply of soil nutrients and inhibit weeds, and is long in life cycle and obvious in economic benefit.

Description

technical field [0001] The invention relates to a method for preparing an organic covering mat of pyrolysis oil urea-formaldehyde resin, which belongs to the technical field of landscaping. Background technique [0002] Organic mulch is a new type of urban greening surface covering material formed by using the by-products of the wood processing industry or directly using wood as raw material through physical pulverization and subsequent processing. It can improve soil ecology, maintain soil moisture, enhance soil fertility, and absorb Dust, promote tree growth, and beautify the environment and other functions. [0003] Many companies and researchers have conducted research on organic mulch, such as the patent (application number: 201510481117.0) which studies a method and device for producing organic mulch from landscaping waste. The product has high humus content and high added value. Resource utilization of garden waste; patent (application number: 201510946855.8) studies...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D7/00A01G13/02C08G12/12C05F17/00
CPCY02W30/40
Inventor 常建民虞宇翔韩利平邢靖晨李露霏
Owner BEIJING FORESTRY UNIVERSITY
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