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Preparation method for degradable urea formaldehyde foam plant culture substrate

A technology for cultivating substrate and urea-formaldehyde foam, which can be used in cultivation, application, coating and other directions, and can solve the problems of non-degradation, waste of resources, damage and the like

Inactive Publication Date: 2014-01-01
LINYI TAIER CHEMTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the urea-formaldehyde foam plant culture substrate is damaged under natural loss, is not easy to degrade, and will cause waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 500.00 g of 1.5 parts of 30% formaldehyde solution and 200.00 g of 1 part of urea into the three-necked bottle, and start the mixer to stir thoroughly. After it is completely dissolved, turn on the heating, raise the temperature to 60°C within 40 minutes, raise the temperature to 90°C within 30 minutes, and keep at constant temperature for 30 minutes. When it was cooled to 40° C., the pH was adjusted to 6.8-7.2 with 10% NaOH solution, and 2 L of water was added thereto to obtain a urea-formaldehyde resin solution for later use.

[0016] Add 2.50 g of sodium dibutylnaphthalene sulfonate into the urea-formaldehyde resin solution and stir to mix evenly. Add 1.05g of phosphoric acid and oxalic acid mixture, 1.05g of resorcinol, 758.33g of plant fiber, 1.10g of borax, and 3.5g of glycerin into the urea-formaldehyde resin solution, and stir to make it a homogeneous system. After pouring into a mold at 25°C for 1.5 hours, post-curing at 45°C for 1 hour.

[0017] Take out...

Embodiment 2

[0019] Add 2.5 parts of 30% formaldehyde solution 500.00g and 1 part of urea 120.00g into the three-necked bottle, start the mixer and stir thoroughly. After it is completely dissolved, turn on the heating, raise the temperature to 60°C within 40 minutes, raise the temperature to 90°C within 30 minutes, and keep at constant temperature for 30 minutes. When it was cooled to 40° C., the pH was adjusted to 6.8-7.2 with 10% NaOH solution, and 1.5 L of water was added thereto to obtain a urea-formaldehyde resin solution, which was set aside.

[0020] Add 2.50 g of sodium dibutylnaphthalene sulfonate into the urea-formaldehyde resin solution and stir to mix evenly. Add 1.00 g of phosphoric acid and oxalic acid mixture, 1.00 g of resorcinol, 585.00 g of plant fiber, 1.00 g of borax, and 3.00 g of glycerin into the urea-formaldehyde resin solution, and stir to make it a homogeneous system. After pouring into a mold at 20°C for 2.0 hours, post-curing at 40°C for 1.5 hours.

[0021] T...

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Abstract

The invention relates to a preparation method of a degradable urea formaldehyde foam plant culture substrate. The preparation method comprises the following steps: mixing the components of the plant culture substrate according to a ratio and performing compression molding, wherein the components comprise urea formaldehyde resin, nekal, mixed liquid of phosphoric acid and oxalic acid, resorcinol, plant fibers, borax and glycerol; performing ammonium hydrogen carbonate and polyethylene glycol surface treatment respectively to obtain the degradable urea formaldehyde foam plant culture substrate. According to the preparation method of the degradable urea formaldehyde foam plant culture substrate, the sources of the raw materials are wide; the process is simple; the production is pollution-free; the use is pollution-free; the product is non-toxic and degradable; the product can provide abundant nitrogen sources in a using process and after being damaged; the culture substrate is abundant in the plant fibers, so that the water-absorbing performance and the water retention performance are greatly improved and the culture substrate is good for the growth of plants; the culture substrate is expected to be widely applied in the field of plant culture.

Description

technical field [0001] The invention relates to a preparation method of urea-formaldehyde foam plant culture substrate. Especially the preparation method of degradable urea-formaldehyde foam. Background technique [0002] As we all know, soil is the most basic carrier of plants, but with the increasing shortage of land resources, the special cultivation requirements of plants and the urgency of environmental protection, to some extent, the traditional cultivation substrate can no longer meet the needs of modern agricultural production. As a substitute for soil cultivation, soilless culture products are getting more and more attention, and there are more and more related research reports. However, most of the soilless cultivation substrates used are composite carriers, mainly using foam plastics, sawdust, plant decay, etc. as the carriers for plant growth, and some cultivation substrates are not easy to degrade, which will undoubtedly cause re-pollution. [0003] Foam plast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08J7/04C08L97/02C08L61/24C08K13/02C08K3/38C08K3/32C08K5/09C08K5/13C08G12/12A01G9/10
Inventor 王建华王永刚王永志
Owner LINYI TAIER CHEMTECH
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