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Technique for manufacturing formaldehyde-free turf fibre plate

A manufacturing process, straw fiber technology, applied in the field of formaldehyde-free grass fiber board manufacturing process, can solve the problems of high production equipment, failure to popularize, difficult demoulding of grass board, etc., to reduce energy consumption and environmental costs, and solve excessive production costs High, the effect of avoiding the release of free formaldehyde

Inactive Publication Date: 2007-12-12
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Straw has been widely used in the production of glue-free wall materials and isocyanate glue-grass fiberboards, but there are many problems, and it has not been mass-produced so far. The production equipment of the former is high, and the product application is limited to non-load-bearing decoration materials; the isocyanate used in the latter The price of glue is extremely high, a large amount of highly toxic isocyanate vapor is produced during the hot pressing process, and it is difficult to demould the straw board, so it cannot be popularized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: Manufacturing process of medium density straw fiberboard

[0016] Raw materials include non-mildewed rice straw, low-temperature defatted and peeled soybean meal, caustic soda, urea, water, copper sulfate, zinc sulfate, quicklime, etc.

[0017] Step 1. Using low-temperature degreasing and peeling soybean meal to prepare a soybean protein-based water-resistant wood adhesive for formaldehyde-free grass fiberboard according to the method applied for in patent 200610124835.3, with a crude protein content of more than 12.5%;

[0018] Step 2: Dissolve 1.75 kg of copper sulfate and 0.25 kg of zinc sulfate in 20 kg of water to become solution I, dissolve quicklime in 80 kg of water to become solution II, and finally stir and mix solution I into solution II to form grass fiber antiseptic and lignin activator ;

[0019] Step 3, spray 300 kilograms of grass fiber anticorrosion and lignin activator to 1000 kilograms of rice straw powder that is pulverized and passed ...

Embodiment 2

[0023] Embodiment 2: Manufacturing process of medium density wheat straw fiberboard

[0024] The production raw materials include non-mildewed wheat straw, low-temperature defatted peanut meal, caustic soda, urea, water, copper sulfate, zinc sulfate, quicklime, etc.

[0025] Step 1. Using low-temperature defatted peanut meal to prepare a peanut protein-based water-resistant wood adhesive for formaldehyde-free grass fiberboards according to the method applied for in patent 200610124835.3, with a crude protein content of more than 15%;

[0026] Step 2: Dissolve 1.90 kg of copper sulfate and 0.10 kg of zinc sulfate in 20 kg of water to become solution I, dissolve quicklime in 80 kg of water to become solution II, and finally stir and mix solution I into solution II to form grass fiber antiseptic and lignin activator ;

[0027] Step 3, spray 350 kilograms of grass fiber anticorrosion and lignin activator to 1000 kilograms of rice straw powder that is pulverized and passed through...

Embodiment 3

[0031] Example 3: Manufacturing process of high-density wheat straw fiberboard

[0032] Production raw materials include non-mildewed wheat straw, low-temperature defatted peanut meal, beef blood powder, caustic soda, urea, water, copper sulfate, zinc sulfate, quicklime, etc.

[0033] Step 1. Using low-temperature defatted peanut meal and bovine blood powder to prepare peanut protein bovine blood powder-based water-resistant wood adhesive for formaldehyde-free grass fiberboard according to the method applied for in patent 200610124835.3, with a crude protein content of more than 15%;

[0034] Step 2: Dissolve 1.50 kg of copper sulfate and 0.50 kg of zinc sulfate in 20 kg of water to become solution I, dissolve quicklime in 80 kg of water to become solution II, and finally stir and mix solution I into solution II to form grass fiber antiseptic and lignin activator ;

[0035] Step 3, spraying 250 kilograms of grass fiber antiseptic and lignin activator to 1000 kilograms of whea...

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Abstract

The oxalaldehyde free fiber plate features in the making crushing of herb haulm for antiseptic treatment and air baking, applicable for water resistant wood glue making for glue application, air current steam and dehydration, air current spread and cold press to make blanks and heat forming. It replaces the wood by stalks and other material, reduces energy consumption and environment sacrifices, avoiding free formaldehyde emission, effectively solving the bubble and mold fall off issue.

Description

technical field [0001] The invention relates to a fiberboard manufacturing process, in particular to a formaldehyde-free grass fiberboard manufacturing process. Background technique [0002] In recent years, the development of my country's MDF production has advanced by leaps and bounds, and its production capacity has grown rapidly, making it the world's largest producer. From the perspective of environmental protection, the excessive development of MDF is posing a huge threat to the sustainable development of our country. For example, in a prefecture-level city, three small and medium-sized MDF factories are launched at the same time, consuming 144,000 cubic meters of wood each year, and 2,700hm of forest needs to be cut down. 2 Above, under the normal harvesting index, the operating rate is only 30%. The environmental impact of the over-logging problem caused by uncontrolled MDF production is serious. In order to cooperate with the country's formulation and implementat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/04B27N1/00B27N1/02F26B3/10B27N3/12B27N3/20C09J189/00
Inventor 刘玉环阮榕生刘成梅
Owner NANCHANG UNIV
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