阅读说明：本技术 一种提高烧香用竹签韧性的方法 (Method for improving toughness of bamboo stick for burning incense ) 是由 刘浩宇 于 2019-08-22 设计创作，主要内容包括：本发明公开了一种提高烧香用竹签韧性的方法,具体涉及竹材处理技术领域,本发明提供方法可以有效提高竹材的韧性和疏水性能,可以将其制成竹签应用于竹签香领域,以提高其使用储存性能。将竹材进行改变湿度、压力、温度处理,可以使水汽浸入其内部间隙,软化其内部组织纤维,提高后续对处理液的吸收,初步提高其韧性。(The invention discloses a method for improving toughness of bamboo sticks for burning incense, and particularly relates to the technical field of bamboo processing. The bamboo is subjected to humidity, pressure and temperature change treatment, so that water vapor can be soaked into the internal clearance of the bamboo to soften the internal tissue fiber, the subsequent absorption of treatment liquid is improved, and the toughness of the bamboo is initially improved.)

1. A method for improving the toughness of a bamboo stick for burning incense is characterized by comprising the following steps:

(1) cutting bamboo into segments, peeling, slicing, placing into a treatment tank with air relative humidity of 75-80%, temperature of 42-45 deg.C and pressure of 0.1-0.5Pa, standing for 10-12h, adjusting temperature to 2-5 deg.C, humidity of 50-56% and pressure of 50-60Pa, standing for 10-12h, recovering to standard atmospheric pressure, taking out bamboo, and oven drying to water content of 30-35%;

(2) adding the bamboo obtained in the step (1) into the treatment tank again, vacuumizing, sucking treatment liquid to immerse the bamboo, pressurizing to 2.5-3.2MPa, heating to 85-88 ℃, keeping for 30-50min, relieving pressure, taking out the bamboo, and drying at 50-56 ℃;

(3) and (3) performing low-pressure dielectric barrier discharge plasma treatment on the bamboo wood obtained in the step (2), wherein the treatment time is 60-68s, the discharge power is 50-55W, and the treatment pressure is 15-20 KPa.

2. The method for improving the toughness of the bamboo stick for burning incense according to claim 1, wherein the preparation method of the treatment liquid in the step (2) comprises the following steps:

(1) dispersing 10-15 parts by weight of attapulgite in deionized water with the volume 30-50 times of that of the attapulgite, dispersing for 20-30min at 40-50 ℃ and 600-800rpm, then adding 5-6 parts by weight of maleic anhydride, continuously stirring and heating to 90-98 ℃, reacting for 3-5h, cooling, filtering, washing with distilled water, and drying to obtain maleic anhydride grafted attapulgite;

(2) dispersing the maleic anhydride grafted attapulgite obtained in the step (1) into deionized water with the volume 20-30 times of that of the attapulgite again, uniformly dispersing, adding 5-6 parts of tricyclodecan-3-ene-8-ol and 0.3-0.5 part of ammonium persulfate into the mixture, stirring the mixture at the speed of 300-400rpm, heating the mixture to 80-81 ℃, reacting the mixture for 6-7 hours under the condition, cooling, filtering, washing, and drying the mixture at the temperature of 30-40 ℃ to obtain modified attapulgite;

(3) and (3) reacting the modified attapulgite in the step (2) with 50-60 parts of cyclohexane dimethylene diisocyanate and 15-30 parts of polyether polyol at 80-90 ℃ for 2-3h, then adding 5-10 parts of ethylenediamine and 0.5-0.8 part of organic tin catalyst, and reacting at 70-80 ℃ for 6-8 h.

3. The method for improving the toughness of the bamboo stick for burning incense according to claim 1, wherein the plasma atmosphere in the step (3) is hexamethyldisiloxane.

Technical Field

The invention belongs to the technical field of bamboo wood processing, and particularly relates to a method for improving the toughness of a bamboo stick for burning incense.

Background

The bamboo stick incense is shaped like a bamboo stick, the middle section and the upper section of the bamboo stick incense are wrapped with spices, and the lower section of the bamboo stick incense is naked bamboo. The bamboo sticks used by the bamboo stick are made of bamboo wood and widely used in human society. However, the natural bamboo has many defects, such as poor toughness, easy mildew and worm damage, which affect the storage and use quality of the bamboo stick incense. Therefore, the bamboo is modified, and the use performance of the bamboo stick incense can be improved.

Disclosure of Invention

In view of the above problems, the present invention aims to provide a method for improving the toughness of bamboo sticks for burning incense.

The invention is realized by the following technical scheme:

a method for improving toughness of bamboo sticks for burning incense specifically comprises the following steps:

(1) cutting bamboo into segments, peeling, slicing, placing into a treatment tank with air relative humidity of 75-80%, temperature of 42-45 deg.C and pressure of 0.1-0.5Pa, standing for 10-12h, adjusting temperature to 2-5 deg.C, humidity of 50-56% and pressure of 50-60Pa, standing for 10-12h, recovering to standard atmospheric pressure, taking out bamboo, and oven drying to water content of 30-35%; the bamboo is subjected to humidity, pressure and temperature change treatment, so that water vapor can be soaked into the internal clearance of the bamboo to soften the internal tissue fiber, the subsequent absorption of treatment liquid is improved, and the toughness of the bamboo is initially improved;

(2) adding the bamboo obtained in the step (1) into the treatment tank again, vacuumizing, sucking treatment liquid to immerse the bamboo, pressurizing to 2.5-3.2MPa, heating to 85-88 ℃, keeping for 30-50min, relieving pressure, taking out the bamboo, and drying at 50-56 ℃;

(3) and (3) performing low-pressure dielectric barrier discharge plasma treatment on the bamboo wood obtained in the step (2), wherein the treatment time is 60-68s, the discharge power is 50-55W, and the treatment pressure is 15-20 KPa.

Further, the preparation method of the treating fluid in the step (2) comprises the following steps:

(1) dispersing 10-15 parts by weight of attapulgite in deionized water with the volume 30-50 times of that of the attapulgite, dispersing for 20-30min at 40-50 ℃ and 600-800rpm, then adding 5-6 parts by weight of maleic anhydride, continuously stirring and heating to 90-98 ℃, reacting for 3-5h, cooling, filtering, washing with distilled water, and drying to obtain maleic anhydride grafted attapulgite;

(2) dispersing the maleic anhydride grafted attapulgite obtained in the step (1) into deionized water with the volume 20-30 times of that of the attapulgite again, uniformly dispersing, adding 5-6 parts of tricyclodecan-3-ene-8-ol and 0.3-0.5 part of ammonium persulfate into the mixture, stirring the mixture at the speed of 300-400rpm, heating the mixture to 80-81 ℃, reacting the mixture for 6-7 hours under the condition, cooling, filtering, washing, and drying the mixture at the temperature of 30-40 ℃ to obtain modified attapulgite; the bamboo wood is treated by the polyurethane treatment liquid containing the modified attapulgite, so that the hydrophobic property and toughness of the bamboo wood can be improved, wherein the modified attapulgite firstly reacts with hydroxyl on the surface of the attapulgite by using maleic anhydride to graft, acid anhydride and double bonds are introduced, then tricyclodecane-3-ene-8-ol is added with the double bonds to introduce cycloalkyl and hydroxyl, the cycloalkyl improves the hydrophobic property of the polyurethane, the hydroxyl can react with isocyanate to strengthen network crosslinking of the polyurethane, and the interface bonding property of the attapulgite and a polyurethane substrate is enhanced, so that the toughness and weather resistance of the polyurethane are improved by adding the modified attapulgite, and the hydrophobic property and toughness of the bamboo wood can be obviously improved by treating the bamboo wood;

(3) and (3) reacting the modified attapulgite in the step (2) with 50-60 parts of cyclohexane dimethylene diisocyanate and 15-30 parts of polyether polyol at 80-90 ℃ for 2-3h, then adding 5-10 parts of ethylenediamine and 0.5-0.8 part of organic tin catalyst, and reacting at 70-80 ℃ for 6-8 h.

Further, the plasma atmosphere in the step (3) is hexamethyldisiloxane.

As a further scheme of the invention:

the invention has the beneficial effects that: the method provided by the invention can effectively improve the toughness and the hydrophobic property of the bamboo wood, and the bamboo wood can be made into bamboo sticks to be applied to the field of bamboo stick incense so as to improve the use and storage properties of the bamboo wood. The bamboo is subjected to humidity, pressure and temperature change treatment, so that water vapor can be soaked into the internal clearance of the bamboo to soften the internal tissue fiber, the subsequent absorption of treatment liquid is improved, and the toughness of the bamboo is initially improved; the bamboo wood is treated by the polyurethane treatment liquid containing the modified attapulgite, so that the hydrophobic property and toughness of the bamboo wood can be improved, wherein the modified attapulgite firstly reacts with hydroxyl on the surface of the attapulgite by using maleic anhydride to graft, acid anhydride and double bonds are introduced, then tricyclodecane-3-ene-8-ol is added with the double bonds to introduce cycloalkyl and hydroxyl, the cycloalkyl improves the hydrophobic property of the polyurethane, the hydroxyl can react with isocyanate to strengthen network crosslinking of the polyurethane, and the interface bonding property of the attapulgite and a polyurethane substrate is enhanced, so that the toughness and weather resistance of the polyurethane are improved by adding the modified attapulgite, and the hydrophobic property and toughness of the bamboo wood can be obviously improved by treating the bamboo wood; the bamboo wood is subjected to plasma treatment by utilizing hexamethyldisiloxane, so that a layer of hydrophobic functional groups is deposited on the surface, and the hydrophobic effect of the bamboo wood is further enhanced.

Detailed Description

The invention is illustrated by the following specific examples, which are not intended to be limiting.