阅读说明：本技术 强渗透高活性木材防腐材料及其制备方法 (Strong-permeability high-activity wood anticorrosive material and preparation method thereof ) 是由 方锡武 杨可升 符建波 汪海风 于 2020-07-14 设计创作，主要内容包括：本发明公开了一种强渗透高活性木材防腐材料,其具有以下重量份数的组分组成：乙酰化试剂80-120份；离子液体10-20份；相容剂2-3份；所述乙酰化试剂为乙酰酐或乙酸乙烯酯,所述离子液体为吡啶型离子液体或咪唑型离子液体,相容剂为马来酸酐接枝相容剂。该强渗透高活性木材防腐材料包括乙酰化试剂和离子液体,离子液体具有润胀、溶解木质纤维及酯化催化特征,这样可使木材更加具有活性,这样就能使乙酰化试剂更容易的渗入到木材的深处,增强乙酰化试剂的渗透性,同时可使进行防腐处理的木材更具有活性,可有效提高木材的防腐处理效果。(The invention discloses a strong-permeability high-activity wood anticorrosive material which comprises the following components in parts by weight: 80-120 parts of an acetylation reagent; 10-20 parts of ionic liquid; 2-3 parts of a compatilizer; the acetylation reagent is acetic anhydride or vinyl acetate, the ionic liquid is pyridine type ionic liquid or imidazole type ionic liquid, and the compatilizer is maleic anhydride grafting compatilizer. This strong high activity timber anticorrosive material that permeates includes acetylation reagent and ionic liquid, and ionic liquid has swelling, dissolves wood fiber and esterification catalysis characteristic, can make timber more active like this, just so can make the infiltration of acetylation reagent easier to the depths of timber, strengthens the permeability of acetylation reagent, can make the timber that carries out antiseptic treatment more active simultaneously, can effectively improve ligneous antiseptic treatment effect.)

1. The strong-permeability high-activity wood preservative material is characterized by comprising the following components in parts by weight:

80-120 parts of an acetylation reagent;

10-20 parts of ionic liquid;

2-3 parts of a compatilizer;

the acetylation reagent is acetic anhydride or vinyl acetate, the ionic liquid is pyridine type ionic liquid or imidazole type ionic liquid, and the compatilizer is maleic anhydride grafting compatilizer.

2. The strong-permeability high-activity wood preservative material according to claim 1, wherein the pyridine type ionic liquid is a tetrafluoroborate N-ethylpyridine type ionic liquid or a hexafluorophosphate N-dodecylpyridine type ionic liquid.

3. A strong penetrating high activity wood preservative material according to claim 1, characterized in that said imidazole type ionic liquid is a 1-hexyl-3-vinylimidazole type ionic liquid or a 1-octyl-3-vinylimidazole type ionic liquid.

4. The strong penetration high activity wood preservative material according to claim 1, wherein the ionic liquid has a purity of 90% or more and a thermal decomposition temperature of 200 ℃ or more.

5. A preparation method of a strong-permeability high-activity wood anticorrosive material is characterized by comprising the following steps:

1) adding a small amount of deionized water and an acidic solution into the ionic liquid, and carrying out acid radical ion functionalization treatment on the ionic liquid;

2) adding an acetylation reagent and a compatilizer into the ionic liquid according to the proportion to react, heating at 60-70 ℃ at the same time, and stirring for 5-10 hours;

3) when a large amount of milky thick solid is generated in the stirring process, adding a saturated alkyl reagent, and continuously carrying out hot stirring until granular solid is formed.

6. The method for preparing the strong-permeability high-activity wood preservative material according to the claim 5, characterized in that: the acid solution is dilute sulfuric acid or dilute hydrochloric acid.

7. The method for preparing the strong-permeability high-activity wood preservative material according to the claim 5, characterized in that: the saturated alkyl reagent is one or a mixture of more of methyl CH3-, ethyl CH3CH2-, methanol CH3OH and methyl chloride CH3 Cl.

Technical Field

The invention relates to the technical field of anticorrosive materials, in particular to a strong-permeability high-activity wood anticorrosive material and a preparation method thereof.

Background

Wood is a natural organic complex whose constituents are nutrients for microorganisms. Under certain conditions, wood is easy to decay and degrade, and various wood preservatives have been applied to prolong the service life of the wood, and the conventional preservative components are effective in preventing the decay of the wood, but the toxicity of the conventional preservative can cause environmental pollution and harm people and livestock. Therefore, the research of non-toxic preservative treatment has been increasingly gaining attention. After wood is acetylated, the components of the wood are changed structurally, hydroxyl groups of holocellulose and lignin are replaced by acetyl groups, the treatment can eliminate the activity of fungal enzyme, inhibit the biodegradation reaction of the wood and play a good role in corrosion prevention, so that the wood acetylation treatment is widely applied to the wood corrosion prevention process.

At present, wood acetylation is mostly carried out by adopting a soaking method, namely, wood is directly soaked in an acetyl anhydride solution for treatment, but the existing acetyl preservative solvent has certain defects of poor permeability, the preservative solvent can enter the deep part of the wood only by soaking for a long time during soaking, sometimes the central part of the wood can not permeate, the preservative treatment effect of the wood is influenced under the condition, but if the soaking time is too long, the activity of the wood is possibly influenced. In addition, the conventional acetylation treatment needs supercritical toluene and other catalysts, and the cost is high, so that a low-cost, strong-permeability and high-activity wood preservative material needs to be developed to solve the technical problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a strong-permeability high-activity wood preservative material. The technical scheme provided by the invention is as follows: a strong-permeability high-activity wood anticorrosive material comprises the following components in parts by weight:

80-120 parts of an acetylation reagent;

10-20 parts of ionic liquid;

2-3 parts of a compatilizer;

the acetylation reagent is acetic anhydride or vinyl acetate, the ionic liquid is pyridine type ionic liquid or imidazole type ionic liquid, and the compatilizer is maleic anhydride grafting compatilizer.

Preferably, the pyridine type ionic liquid is N-ethylpyridine tetrafluoroborate type ionic liquid or N-dodecylpyridine hexafluorophosphate type ionic liquid.

Preferably, the imidazole type ionic liquid is 1-hexyl-3-vinyl imidazole type ionic liquid or 1-octyl-3-vinyl imidazole type ionic liquid.

Preferably, the ionic liquid has a purity of 90% or more and a thermal decomposition temperature of 200 ℃ or more.

The patent also discloses a preparation method of the strong-permeability high-activity wood preservative material, which comprises the following steps:

1) adding deionized water and an acidic solution into the ionic liquid, and carrying out acid radical ion functionalization treatment on the ionic liquid;

2) adding an acetylation reagent and a compatilizer into the ionic liquid according to the proportion to react, heating at 60-70 ℃ at the same time, and stirring for 5-10 hours;

3) when a large amount of milky thick solid is generated in the stirring process, adding a saturated alkyl reagent, and continuously carrying out hot stirring until granular solid is formed.

Preferably, the acidic solution is dilute sulfuric acid or dilute hydrochloric acid.

Preferably, the saturated hydrocarbon-based reagent is one or a mixture of more of methyl CH3-, ethyl CH3CH2-, methanol CH3OH and methyl chloride CH3 Cl.

The technical scheme has the following beneficial effects: this strong high activity timber anticorrosive material that permeates includes acetylation reagent and ionic liquid, and ionic liquid has swelling, dissolves wood fiber and esterification catalysis characteristic, can make timber more active like this, just so can make the infiltration of acetylation reagent easier to the depths of timber, strengthens the permeability of acetylation reagent, can make the timber that carries out antiseptic treatment more active simultaneously, can effectively improve ligneous antiseptic treatment effect.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Example embodiments will now be described more fully. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the invention.