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Method for preparing compound board substrate by using waste yam diosgenin fibers

A technology of turmeric saponin and composite board, which is applied in the field of resource utilization technology and material production, can solve problems such as not being able to play a good bonding effect, and achieve the effect of realizing resource reuse, improving mechanical properties, and improving moisture resistance.

Inactive Publication Date: 2013-11-06
WUHAN INSTITUTE OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese patent publication CN101235614A mainly uses the starch contained in the saponin waste residue to generate viscosity by heating to replace the sheet adhesive. Therefore, the premise of this method is that the waste residue must contain a certain amount of starch and the 28- 42% moisture, the starch in the saponin waste residue after long-term storage has been decomposed, obviously it cannot play a good bonding effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Air-dry and pulverize the turmeric saponin fiber waste residue produced before fermentation and acidolysis obtained by the direct separation method through a 40-mesh sieve, take 60g and put it in a mixer, and add it with a solid content of 30-50% under constant stirring. 8g of urea-formaldehyde resin, 1g of flame retardant antimony trioxide, and 2g of silicone waterproofing agent. After mixing evenly, add 6g of ammonium chloride solution with a mass concentration of 20%. After stirring evenly, transfer it to a steel mold for compaction. The temperature is 150°C, and the pressure is 2 MPa, and the hot pressing is carried out for 30 minutes. After the mold is cooled, the plate sample is taken out, and it is cured at room temperature for one day to obtain the composite plate base material 1 with fireproof and moisture-proof properties.

Embodiment 2

[0028] The turmeric saponin fiber waste residue and the saponin waste residue produced by the direct separation method before fermentation and acidolysis are air-dried and pulverized through an 80-mesh sieve, and 30g each is placed in a mixer, and the solid content is added under constant stirring. 10g of 30-50% prepared urea-formaldehyde resin and 6g of 10-20% polyvinyl alcohol aqueous solution. After mixing evenly, add 6g of ammonium chloride solution with a mass concentration of 20%. Stir evenly and transfer to a steel mold Medium compaction, hot pressing at a temperature of 150°C and a pressure of 2 MPa for 20 minutes, take out the plate sample after the mold is cooled, and mature at room temperature for one day to obtain the composite plate base material 2.

Embodiment 3

[0030] Air-dry and pulverize the turmeric saponin fiber waste residue produced before fermentation and acidolysis obtained by the direct separation method and pass through a 40-mesh sieve, and cut the recovered plastic bags into 5-10mm pieces. 2 Take 50g of the above-mentioned saponin waste residue and 4g of plastic fragments in a mixer and mix evenly, add 7g of PMDI and 3g of solubilizer MAPE under constant stirring, and add 6g after mixing uniformly to a mass concentration of 20% ammonium chloride solution, stirred evenly, transferred to a steel mold for compaction, hot-pressed at a temperature of 150°C and a pressure of 2MPa for 40min, after the mold was cooled, the plate sample was taken out, and aged at room temperature for 24h to obtain a composite plate base material 3.

[0031] Part of the performance indexes of the three panels in the above examples measured according to "Test Methods for Physical and Chemical Properties of Wood-based Panels and Decorated Wood-based P...

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Abstract

The invention relates to a method for preparing a compound board substrate by using waste yam diosgenin fibers. The method comprises the following steps: 1) drying the waste yam diosgenin fibers in air, grinding the dry waste yam diosgenin fibers and screening the ground waste yam diosgenin fibers to obtain the waste yam diosgenin fibers with grain sizes between 40 meshes and 100 meshes; 2) taking 50-100 parts of the waste yam diosgenin fibers from step 1), 5-20 parts of adhesive, 5-10 parts of curing agent and 3-6 parts of modifier in parts by weight, mixing evenly, putting the obtained mixture into a mould and compacting; and, 3) at a temperature between 50 DEG C and 200 DEG C and under a pressure between1.5MPa and 2.5MPa, thermally pressing for 10-60 min, cooling, demoulding and curing to obtain the compound board substrate. The compound board substrate prepared by the method provided by the invention is beneficial to the reutilization of resources, and has remarkable economic benefit and environmental benefit.

Description

technical field [0001] The invention relates to a method for preparing a composite board base material by using turmeric saponin fiber waste residue, and belongs to the technical field of resource utilization technology and material production. Background technique [0002] The traditional saponin production process generally adopts the process of "natural fermentation-acidolysis-extraction of saponin". The saponin waste residue of the traditional process is the solid powder left after the extraction of saponin and the remaining substances such as starch, protein and cellulose after the high-temperature acid hydrolysis of the raw materials of traditional Chinese medicine such as turmeric, which is produced after fermentation and acid hydrolysis. of waste. The direct separation method is a new technology used in the production of turmeric saponin in recent years. The fiber and starch in turmeric are separated by physical methods, and then "fermentation-acidolysis-extraction ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/04B27N3/12
CPCY02W30/91
Inventor 周旋向罗京毕亚凡朱重宁左淼邓光天
Owner WUHAN INSTITUTE OF TECHNOLOGY
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