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Industrial lignin composite montmorillonite wood modifier as well as preparation method and application thereof

A technology for industrial lignin and montmorillonite, which is applied in wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of harming the environment and human health, low dispersibility of natural montmorillonite, and unsatisfactory effect, and achieves alleviation of pollution. , to achieve high-value utilization, to achieve the effect of resource reuse

Inactive Publication Date: 2019-11-08
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dispersion of natural montmorillonite is low, and the effect is not ideal in the actual application process, so it needs to be modified
After the natural montmorillonite is modified into organic montmorillonite, the water resistance and dimensional stability of wood can be improved. At present, most of them are modified by bis-decyl dimethyl ammonium chloride, but the effect is still limited; and some wood modification There are certain volatile harmful substances in the active agent, which is harmful to the environment and human health

Method used

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  • Industrial lignin composite montmorillonite wood modifier as well as preparation method and application thereof
  • Industrial lignin composite montmorillonite wood modifier as well as preparation method and application thereof
  • Industrial lignin composite montmorillonite wood modifier as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Sodium montmorillonite (Na-MMT), alkali lignin, cetyltrimethylammonium bromide (CTAB), polyvinyl alcohol (PVA) with a degree of polymerization of 500, ethanol, fast-growing poplar (Populus cathayana Rehd, 20*20*20mm3), are commercially available.

[0031] (1) Preparation of industrial lignin composite montmorillonite modifier

[0032] Select 1 part of Na-MMT, 1 part of CTAB, 1 part of PVA, 20 parts of ethanol, and 50 parts of deionized water. Put the mixture into a beaker and stir it, put it into an ultrasonic oscillator after stirring evenly, and process it with ultrasonic waves for 30 minutes under the condition of 100 Hz to obtain a suspension of montmorillonite.

[0033] Add 1 part of alkali lignin to the montmorillonite suspension, put the mixture into a beaker and stir it, then use a planetary ball mill to disperse the mixture, the experimental conditions are 200r / min, ball milling time 2h, to obtain industrial lignin composite montmorillonite Soil removal modif...

Embodiment 2

[0037] Calcium-based montmorillonite (Ca-MMT), alkali lignin, CTAB, PVA with a degree of polymerization of 4000, ethanol, and fast-growing poplar (Populus cathayana Rehd, 20*20*20mm3), are all commercially available.

[0038] (1) Preparation of industrial lignin composite montmorillonite modifier

[0039] Select 4 parts of Ca-MMT, 3 parts of CTAB, 9 parts of PVA, 50 parts of ethanol, and 133 parts of deionized water. Put the mixture into a beaker and stir it, put it into an ultrasonic oscillator after stirring evenly, and process it with ultrasonic waves for 240 min under the condition of 100 Hz to obtain a montmorillonite suspension.

[0040] Add 20 parts of alkali lignin to the montmorillonite suspension, put the mixture into a beaker and stir it, then use a planetary ball mill to disperse the mixture. The experimental conditions are 180r / min and 4h ball milling time to obtain industrial lignin composite montmorillonite. Soil removal modifier suspension.

[0041] (2) Impre...

Embodiment 3

[0044] Na-MMT, papermaking black liquor, CTAB, PVA with a degree of polymerization of 1000, ethanol, and fast-growing poplar (Populuscathayana Rehd, 20*20*20mm3) are all commercially available.

[0045] (1) Preparation of industrial lignin composite montmorillonite modifier

[0046] Select 6 parts of Na-MMT, 18 parts of CTAB, 7 parts of PVA, 80 parts of ethanol, and 131 parts of deionized water. Put the mixture into a beaker and stir it, put it into an ultrasonic oscillator after stirring evenly, and process it with ultrasonic waves for 120 min under the condition of 100 Hz to obtain a montmorillonite suspension.

[0047] Add 6 parts of paper-making black liquor to the montmorillonite suspension, put the mixture into a beaker and stir it, then use a planetary ball mill to disperse the mixture. The experimental conditions are 240r / min and 3h ball milling time to obtain industrial lignin composite montmorillonite. Soil removal modifier suspension.

[0048] (2) Impregnation tre...

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Abstract

The invention relates to an industrial lignin composite montmorillonite wood modifier as well as a preparation method and an application thereof. The waterproof property and the stability of a modified material are improved by use of natural montmorillonite and industrial lignin. The industrial lignin mainly comes from byproducts of the papermaking industry and has the advantages of wide sources,low cost, no toxicity and the like. The industrial lignin is recycled, pollution can be relieved, and resource reutilization can be realized; and the lignin has a complicated structure, also containshydrophilic groups and hydrophobic groups and can be used as a surfactant, and the lamellar distance of montmorillonite can be effectively improved. Wood is treated trough the industrial lignin by cooperation with nano montmorillonite, the size stability of fast growing wood can be effectively improved, the wood performance is improved by use of a montmorillonite composite industrial lignin wood modifier, and the wood modifier has great significance in high-value utilization of waste resources and promotion of efficient and green development of the industry.

Description

technical field [0001] The invention belongs to the technical field of wood function improvement, in particular to an industrial lignin composite montmorillonite wood modifier and its preparation method and application. Background technique [0002] As a green and natural renewable material, wood is widely used in fields such as construction, furniture and decoration materials. However, as a hygroscopic material with a porous structure, wood is prone to warping, cracking and other dimensional stability problems during processing and use, which reduces its lifespan and utilization rate. At the same time, in order to alleviate the shortage of timber resources, my country continues to increase the area of ​​artificial fast-growing forests. However, the material properties of fast-growing timber have many disadvantages, such as low density, low strength and poor dimensional stability, which bring a lot of inconvenience to its processing and utilization. Therefore, how to improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52B27K3/02B27K3/08
CPCB27K3/025B27K3/08B27K3/52B27K2240/70
Inventor 马尔妮刘敏易启睿刘如
Owner BEIJING FORESTRY UNIVERSITY
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