Preparation method of flame-retardant environment-friendly high-strength board

A high-strength, environmentally-friendly technology, applied in wood treatment, flat products, impregnated wood, etc., to achieve the effects of protecting the ecological environment, increasing the economic benefits of enterprises, and meeting environmental protection requirements

Pending Publication Date: 2022-01-11
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention realizes the preparation of flame-retardant and environment-friendly high-strength board without using any adhesive without the release of toxic and harmful substances such as formaldehyde without affecting the performance of the board, and at the same time makes waste in rubber wood processing enterprises turn waste into treasure, Improve the added value of products of rubber wood processing enterprises, and solve a series of problems such as the release of toxic and harmful substances in home building materials that affect human health while maximizing economic benefits

Method used

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  • Preparation method of flame-retardant environment-friendly high-strength board
  • Preparation method of flame-retardant environment-friendly high-strength board

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Experimental program
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Effect test

Embodiment 1

[0020] The present invention will be described in further detail below in conjunction with examples: the waste rubber wood left over from rubber wood processing enterprises and has no additional value is mechanically crushed and screened, and the particles with a particle size of 1-3 cm are chemically pretreated, and hydrogen with a pH value of 13 The sodium oxide aqueous solution was soaked for 3 hours at a ratio of 1:10 (w / w), so that the fibers were fully softened and swollen and part of the lignin was separated. The chemically pretreated raw material is mixed with 3wt% aluminum hydroxide and then ground at a speed of 300rpm for 6h, and the fiber length in the swollen raw material after grinding is 0.5-30mm. Evenly pave the ground and swollen raw materials in the mold, and pre-press for 2-5 minutes under a pressure of 4MPa. Then, under the conditions of pressure of 3 MPa, hot pressing temperature of 130° C., and hot pressing time of 3 hours, the milled raw materials were pu...

Embodiment 2

[0022] The present invention will be described in further detail below in conjunction with examples: the waste rubber wood left over from rubber wood processing enterprises and has no additional value is mechanically crushed and screened, and the particles with a particle size of 1-3 cm are chemically pretreated, and hydrogen with a pH value of 14 The sodium oxide aqueous solution was soaked at a ratio of 1:4 (w / w) for 6 hours, so that the fibers were fully softened and swollen and part of the lignin was separated. The chemically pretreated raw material is mixed with 5wt% magnesia and ground at a speed of 300rpm for 4h, and the fiber length in the swollen raw material after grinding is 0.5-30mm. Evenly pave the ground and swollen raw materials in the mold, and pre-press for 2-5 minutes under a pressure of 4 MPa. Then, under the working conditions of a pressure of 6 MPa, a hot pressing temperature of 120° C., and a hot pressing time of 2 h, the milled raw materials were put int...

Embodiment 3

[0024] The present invention will be described in further detail below in conjunction with examples: the waste rubber wood left over from rubber wood processing enterprises and has no additional value is mechanically crushed and screened, and the particles with a particle size of 1-3 cm are chemically pretreated, and the oxidized rubber wood with a pH value of 10 Magnesium aqueous solution was soaked for 3 hours at a ratio of 1:5 (w / w), so that the fibers were fully softened and swollen and part of the lignin was separated. The raw material after chemical pretreatment is mixed with 15wt% aluminum diethylphosphinate and ground at 500rpm for 2 hours, and the fiber length in the swollen raw material after grinding is 0.5-30mm. Evenly pave the ground and swollen raw materials in the mold, and pre-press for 2-5 minutes under a pressure of 4 MPa. Then, under the conditions of pressure of 6 MPa, hot pressing temperature of 90° C., and hot pressing time of 3 h, the pulverized raw mate...

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Abstract

The invention discloses a preparation method of a flame-retardant environment-friendly high-strength board. Waste rubber wood which is remained in rubber wood processing enterprises and has no additional value is used as a raw material, no adhesive is used, and the flame-retardant environment-friendly board is prepared by using the characteristics of the raw material through the processes of crushing and screening, chemical pretreatment, grinding, pre-pressing, hot pressing and the like. By means of the content of the method, the flame-retardant environment-friendly high-strength board is prepared without using any adhesive on the premise of not influencing the performance of the board for the first time, toxic and harmful substances such as formaldehyde are not released, meanwhile, wastes in rubber wood processing enterprises are turned into wealth, the product additional value of the rubber wood processing enterprises is improved, and a series of problems of release of toxic and harmful substances influencing human health in home building materials and the like are solved while the economic benefit is maximized.

Description

technical field [0001] The invention belongs to the field of energy technology, and in particular relates to a method for preparing an environment-friendly biological plate by using waste rubber wood as a raw material. Background technique [0002] my country's biomass resources are very rich, and the comprehensive utilization of biomass waste is an important research field. As an economic species of rubber trees, taking Hainan Province as an example, more than 1 million rubber trees are regenerated every year, and about 40% of the waste is generated during its processing, such as branch wood and shavings. The shapes of these wastes are different, which brings difficulties to further processing and utilization. Direct burning as fuelwood will seriously pollute the environment, and its calorific value is low. Therefore, efficient and high-value utilization of these renewable resources is of great significance. [0003] With the continuous development of the world economy an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27L11/00B27K3/20B27N3/08C08H7/00
CPCB27L11/00B27K3/20B27N3/08C08H6/00B27K2200/15
Inventor 张宗超石振
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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