Efficient pretreatment method for bamboo property test

Abstract

The invention provides a high-efficiency pretreatment method for bamboo property testing, which comprises the following steps: soaking bamboo in a composite anti-corrosion solution, soaking in a cold composite anti-corrosion solution, repeatedly heating, soaking the bamboo in a composite wax solution, wiping the wax solution on the surface, cleaning the surface of the bamboo by using a high-pressure cleaner, and drying. According to the efficient pretreatment method for bamboo property testing, the borate solution and the sodium silicate are mixed, acetic acid and ethyl alcohol serve as gels for compounding, the loss resistance of boron bamboo preservatives is improved, the boron bamboo preservatives permeate and are solidified and attached to bamboo cell walls, the positive effect on the size stability of bamboo is achieved, and the service life of the bamboo preservatives is prolonged. The wax liquid is added into the bamboo, the resole is added into the wax liquid, the wax liquid and the resole jointly permeate into the bamboo, the effect of bonding fiber tube bundles is achieved, the permeated wax liquid is converted into a solid state, external moisture and moisture can be prevented from invading, and therefore the size stability of the bamboo is improved.

Description

Technical Field

[0001] The invention relates to bamboo-related fields, and in particular to an efficient pre-treatment method for testing bamboo properties. Background Art

[0002] The pretreatment methods of bamboo mainly include physical and chemical methods. The principle of the physical method is to remove the nutrient source in the bamboo or convert the nutrient source into inedible substances, or to isolate the moisture and air required for the life of decay fungi and insects. The principle of the chemical method is to use preservatives to hinder the basic metabolism of fungi, thereby achieving the purpose of inhibiting the growth and reproduction of fungi and even killing decay fungi.

[0003] A Chinese patent with patent number CN201410669155.4 discloses a bamboo pretreatment method, which treats bamboo by the principle of hot and cold tank method, making it less likely to crack and making the distribution of the agent even so that it can reach the surface of the bamboo. However, during the treatment process, the treatment method focuses on the anti-corrosion treatment of the bamboo. During use, bamboo is easily affected by temperature and expands and contracts due to heat. Therefore, during the pretreatment process of the bamboo, it is necessary to further treat the dimensional stability of the bamboo to improve the safety of bamboo use. Summary of the invention

[0004] In order to solve the above technical problems, the object of the present invention is to provide an efficient pre-treatment method for testing bamboo properties.

[0005] Based on this, the present invention proposes an efficient pre-treatment method for testing bamboo properties, comprising the following steps:

[0006] Step 1: Soak the bamboo material after fumigation to kill the adult insects, larvae and mold spores in a composite antiseptic solution, then heat it constantly to remove the sugar in the bamboo material, and stop heating after the heating time expires;

[0007] Step 2: soaking the bamboo material after constant heating treatment in a cold composite antiseptic solution, and after the soaking time is over, heating the cold composite antiseptic solution soaked with the bamboo material to a constant temperature, and maintaining hot soaking;

[0008] Step 3: Dry the bamboo after antiseptic treatment naturally, and then wax it when there is still a certain amount of moisture. Soak the bamboo in a composite wax liquid at 110-125℃ for 0.5-1h, take it out when the temperature of the wax tank reaches about 70℃, and wipe off the wax liquid on the surface;

[0009] Step 4: Use a high pressure cleaner to clean the bamboo surface, then dry it in the sun for 2-7 days and then transfer it to a drying area for 6-12 weeks.

[0010] Optionally, in step 1, the fumigation method is to use a quicklime fermentation tank to boil the bamboo.

[0011] Optionally, the preservative in the composite preservative solution in step one or step two is composed of a borate solution, sodium silicate and ethyl acetate in a mass ratio of (3):(5):(3-3.5).

[0012] Optionally, the mass concentration of the composite antiseptic solution in step one or step two is 5%-6%.

[0013] Optionally, the composite wax liquid in step three is composed of wax liquid and resol phenolic resin in a mass ratio of (1:2-3).

[0014] Optionally, the resol phenolic resin is concentrated from phenol and formaldehyde in a mass ratio of 1:(0.6-1).

[0015] Optionally, in step 1, when the composite antiseptic solution is heated to 60° C., it is kept warm for 24 hours, and when it is heated to 100° C., it is kept warm for 8 hours.

[0016] Optionally, in step 1, cold soaking is performed in a composite preservative solution at 5-20° C. for 7-14 days.

[0017] The present invention has the following advantages: The present invention provides an efficient pre-treatment method for testing bamboo properties through improvement, which has the following improvements compared with similar equipment:

[0018] Advantages: The present invention provides an efficient pretreatment method for testing the properties of bamboo. A composite antiseptic solution is formed by mixing a borate solution and sodium silicate and adding ethyl acetate as a gelling agent to form a composite antiseptic solution, which improves the anti-loss property of the boron bamboo preservative and increases the corrosion resistance of the treated bamboo. The composite antiseptic solution can penetrate and solidify and adhere to the cell wall of the bamboo, which has a certain positive effect on the dimensional stability of the bamboo. By adding methyl methacrylate resin to the wax liquid, the wax liquid and the methyl methacrylate resin can be infiltrated into the interior of the bamboo together, which plays a role in bonding the fiber bundles. The methyl methacrylate resin is stabilized in the bamboo, which plays a long-term and stable antiseptic effect, thereby increasing the strength of the treated bamboo. The infiltrated wax liquid is converted into a solid state, which can prevent the intrusion of moisture and humidity from the outside, and avoid the influence of moisture on the antiseptic effect, thereby improving the antiseptic property of the bamboo, and improving the dimensional stability of the bamboo, thereby improving the dimensional stability of the bamboo.

[0019] Advantages: The present invention provides an efficient pretreatment method for testing the properties of bamboo materials. The method directly treats the bamboo materials that have been steamed and sterilized with insects and molds in a quicklime fermentation tank, so that the inside of the bamboo materials is free of insects and molds before treatment, which is beneficial for subsequent treatment. The quicklime fermentation tank is used to achieve high-temperature sterilization and prevention of the bamboo materials, and a subsequent high-pressure cleaner is used to clean the surface of the bamboo materials to remove the mucus on the surface. The bamboo materials are then dried naturally in a scientific and reasonable manner to make the bamboo materials evenly dry, thereby avoiding the effects of cracking and reduced strength caused by uneven drying. DETAILED DESCRIPTION

[0020] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] Embodiment 1:

[0022] First, the bamboo is put into a quicklime fermentation tank for steaming, and then the bamboo after the adult insects, larvae and mold spores are removed is put into a hot composite antiseptic solution for hot soaking, wherein the preservative in the composite antiseptic solution is composed of a borate solution, sodium silicate and ethyl acetate in a mass ratio of 3:5:3, and the mass concentration of the composite antiseptic solution is 5%. When the constant temperature is 60°C, it is kept warm for 24 hours, and when the constant temperature is 100°C, it is kept warm for 8 hours. The time is determined according to specific needs;

[0023] Secondly, the bamboo material that has been subjected to constant heating treatment is placed in a cold composite antiseptic solution of the same concentration at a temperature of 5-20°C and soaked for 7-14 days, the time being determined according to specific needs. After the bamboo material is cold soaked, the composite antiseptic solution is heated to the same temperature as the first hot soaking, and kept warm for a corresponding time, and then hot soaked again;

[0024] Then, the treated bamboo is naturally dried, and when there is still a certain amount of moisture in it, it is put into a wax tank at 110-125°C. The composite wax liquid in the wax tank is composed of wax liquid and resol phenolic resin with a mass ratio of 1:2, wherein the resol phenolic resin is concentrated from phenol and formaldehyde with a mass ratio of 1:0.6. Soak for 0.5-1h, take out the bamboo when the temperature of the wax tank reaches about 70°C, and wipe off the wax liquid on the surface;

[0025] Finally, the bamboo surface is cleaned with a high-pressure cleaner, then dried in the sun for 2-7 days and transferred to a drying area for 6-12 weeks, depending on the situation.

[0026] Embodiment 2:

[0027] First, the bamboo is put into a quicklime fermentation tank for steaming, and then the bamboo after the adult insects, larvae and mold spores are removed is put into a hot composite antiseptic solution for hot soaking, wherein the preservative in the composite antiseptic solution is composed of a borate solution, sodium silicate and ethyl acetate in a mass ratio of 3:5:3.5, and the mass concentration of the composite antiseptic solution is 6%. When the constant temperature is 60°C, it is kept warm for 24 hours, and when the constant temperature is 100°C, it is kept warm for 8 hours. The time is determined according to specific needs;

[0028] Secondly, the bamboo material that has been subjected to constant heating treatment is placed in a cold composite antiseptic solution of the same concentration at a temperature of 5-20°C and soaked for 7-14 days, the time being determined according to specific needs. After the bamboo material is cold soaked, the composite antiseptic solution is heated to the same temperature as the first hot soaking, and kept warm for a corresponding time, and then hot soaked again;

[0029] Then, the treated bamboo is naturally dried, and when there is still a certain amount of moisture in it, it is put into a wax tank at 110-125°C. The composite wax liquid in the wax tank is composed of wax liquid and resol phenolic resin with a mass ratio of 1:2, wherein the resol phenolic resin is concentrated from phenol and formaldehyde with a mass ratio of 1:0.6. Soak for 0.5-1h, take out the bamboo when the temperature of the wax tank reaches about 70°C, and wipe off the wax liquid on the surface;

[0030] Finally, the bamboo surface is cleaned with a high-pressure cleaner, then dried in the sun for 2-7 days and transferred to a drying area for 6-12 weeks, depending on the situation.

[0031] Embodiment three:

[0032] First, the bamboo is put into a quicklime fermentation tank for steaming, and then the bamboo after the adult insects, larvae and mold spores are removed is put into a hot composite antiseptic solution for hot soaking, wherein the preservative in the composite antiseptic solution is composed of a borate solution, sodium silicate and ethyl acetate in a mass ratio of 3:5:3, and the mass concentration of the composite antiseptic solution is 5%. When the constant temperature is 60°C, it is kept warm for 24 hours, and when the constant temperature is 100°C, it is kept warm for 8 hours. The time is determined according to specific needs;

[0033] Secondly, the bamboo material that has been subjected to constant heating treatment is placed in a cold composite antiseptic solution of the same concentration at a temperature of 5-20°C and soaked for 7-14 days, the time being determined according to specific needs. After the bamboo material is cold soaked, the composite antiseptic solution is heated to the same temperature as the first hot soaking, and kept warm for a corresponding time, and then hot soaked again;

[0034] Then, the treated bamboo is naturally dried, and when there is still a certain amount of moisture in it, it is put into a wax tank at 110-125°C. The composite wax liquid in the wax tank is composed of wax liquid and resol phenolic resin with a mass ratio of 1:3, wherein the resol phenolic resin is concentrated from phenol and formaldehyde with a mass ratio of 1:0.6. Soak for 0.5-1h, take out the bamboo when the temperature of the wax tank reaches about 70°C, and wipe off the wax liquid on the surface;

[0035] Finally, the bamboo surface is cleaned with a high-pressure cleaner, then dried in the sun for 2-7 days and transferred to a drying area for 6-12 weeks, depending on the situation.

[0036] Embodiment 4:

[0037] First, the bamboo is put into a quicklime fermentation tank for steaming, and then the bamboo after the adult insects, larvae and mold spores are removed is put into a hot composite antiseptic solution for hot soaking, wherein the preservative in the composite antiseptic solution is composed of a borate solution, sodium silicate and ethyl acetate in a mass ratio of 3:5:3.5, and the mass concentration of the composite antiseptic solution is 6%. When the constant temperature is 60°C, it is kept warm for 24 hours, and when the constant temperature is 100°C, it is kept warm for 8 hours. The time is determined according to specific needs;

[0038] Secondly, the bamboo material that has been subjected to constant heating treatment is placed in a cold composite antiseptic solution of the same concentration at a temperature of 5-20°C and soaked for 7-14 days, the time being determined according to specific needs. After the bamboo material is cold soaked, the composite antiseptic solution is heated to the same temperature as the first hot soaking, and kept warm for a corresponding time, and then hot soaked again;

[0039] Then, the treated bamboo is naturally dried, and when there is still a certain amount of moisture in it, it is put into a wax tank at 110-125°C. The composite wax liquid in the wax tank is composed of wax liquid and resol phenolic resin with a mass ratio of 1:3, wherein the resol phenolic resin is concentrated from phenol and formaldehyde with a mass ratio of 1:0.6. Soak for 0.5-1h, take out the bamboo when the temperature of the wax tank reaches about 70°C, and wipe off the wax liquid on the surface;

[0040] Finally, the bamboo surface is cleaned with a high-pressure cleaner, then dried in the sun for 2-7 days and transferred to a drying area for 6-12 weeks, depending on the situation.

[0041] Embodiment five:

[0042] First, the bamboo is put into a quicklime fermentation tank for steaming, and then the bamboo after the adult insects, larvae and mold spores are removed is put into a hot composite antiseptic solution for hot soaking, wherein the preservative in the composite antiseptic solution is composed of a borate solution, sodium silicate and ethyl acetate in a mass ratio of 3:5:3, and the mass concentration of the composite antiseptic solution is 5%. When the constant temperature is 60°C, it is kept warm for 24 hours, and when the constant temperature is 100°C, it is kept warm for 8 hours. The time is determined according to specific needs;

[0043] Secondly, the bamboo material that has been subjected to constant heating treatment is placed in a cold composite antiseptic solution of the same concentration at a temperature of 5-20°C and soaked for 7-14 days, the time being determined according to specific needs. After the bamboo material is cold soaked, the composite antiseptic solution is heated to the same temperature as the first hot soaking, and kept warm for a corresponding time, and then hot soaked again;

[0044] Then, the treated bamboo is naturally dried, and when there is still a certain amount of moisture in it, it is put into a wax tank at 110-125°C, and the composite wax liquid in the wax tank is composed of wax liquid and resol phenolic resin with a mass ratio of 1:3, wherein the resol phenolic resin is concentrated from phenol and formaldehyde with a mass ratio of 1:1. Soak for 0.5-1h, take out the bamboo when the temperature of the wax tank reaches about 70°C, and wipe off the wax liquid on the surface;

[0045] Finally, the bamboo surface is cleaned with a high-pressure cleaner, then dried in the sun for 2-7 days and transferred to a drying area for 6-12 weeks, depending on the situation.

[0046] Embodiment six:

[0047] First, the bamboo is put into a quicklime fermentation tank for steaming, and then the bamboo after the adult insects, larvae and mold spores are removed is put into a hot composite antiseptic solution for hot soaking, wherein the preservative in the composite antiseptic solution is composed of a borate solution, sodium silicate and ethyl acetate in a mass ratio of 3:5:3.5, and the mass concentration of the composite antiseptic solution is 6%. When the constant temperature is 60°C, it is kept warm for 24 hours, and when the constant temperature is 100°C, it is kept warm for 8 hours. The time is determined according to specific needs;

[0048] Secondly, the bamboo material that has been subjected to constant heating treatment is placed in a cold composite antiseptic solution of the same concentration at a temperature of 5-20°C and soaked for 7-14 days, the time being determined according to specific needs. After the bamboo material is cold soaked, the composite antiseptic solution is heated to the same temperature as the first hot soaking, and kept warm for a corresponding time, and then hot soaked again;

[0049] Then, the treated bamboo is naturally dried, and when there is still a certain amount of moisture in it, it is put into a wax tank at 110-125°C, and the composite wax liquid in the wax tank is composed of wax liquid and resol phenolic resin with a mass ratio of 1:3, wherein the resol phenolic resin is concentrated from phenol and formaldehyde with a mass ratio of 1:1. Soak for 0.5-1h, take out the bamboo when the temperature of the wax tank reaches about 70°C, and wipe off the wax liquid on the surface;

[0050] Finally, the bamboo surface is cleaned with a high-pressure cleaner, then dried in the sun for 2-7 days and transferred to a drying area for 6-12 weeks, depending on the situation.

[0051] Embodiment seven:

[0052] First, the bamboo is put into a quicklime fermentation tank for steaming, and then the bamboo after the adult insects, larvae and mold spores are removed is put into a hot composite antiseptic solution for hot soaking, wherein the preservative in the composite antiseptic solution is composed of a borate solution, sodium silicate and ethyl acetate in a mass ratio of 3:5:3, and the mass concentration of the composite antiseptic solution is 5%. When the constant temperature is 60°C, it is kept warm for 24 hours, and when the constant temperature is 100°C, it is kept warm for 8 hours. The time is determined according to specific needs;

[0053] Secondly, the bamboo material that has been subjected to constant heating treatment is placed in a cold composite antiseptic solution of the same concentration at a temperature of 5-20°C and soaked for 7-14 days, the time being determined according to specific needs. After the bamboo material is cold soaked, the composite antiseptic solution is heated to the same temperature as the first hot soaking, and kept warm for a corresponding time, and then hot soaked again;

[0054] Then, the treated bamboo is naturally dried, and when there is still a certain amount of moisture in it, it is put into a wax tank at 110-125°C, and the composite wax liquid in the wax tank is composed of wax liquid and resol phenolic resin with a mass ratio of 1:2, wherein the resol phenolic resin is concentrated from phenol and formaldehyde with a mass ratio of 1:1. Soak for 0.5-1h, take out the bamboo when the temperature of the wax tank reaches about 70°C, and wipe off the wax liquid on the surface;

[0055] Finally, the bamboo surface is cleaned with a high-pressure cleaner, then dried in the sun for 2-7 days and transferred to a drying area for 6-12 weeks, depending on the situation.

[0056] Embodiment eight:

[0057] First, the bamboo is put into a quicklime fermentation tank for steaming, and then the bamboo after the adult insects, larvae and mold spores are removed is put into a hot composite antiseptic solution for hot soaking, wherein the preservative in the composite antiseptic solution is composed of a borate solution, sodium silicate and ethyl acetate in a mass ratio of 3:5:3.5, and the mass concentration of the composite antiseptic solution is 6%. When the constant temperature is 60°C, it is kept warm for 24 hours, and when the constant temperature is 100°C, it is kept warm for 8 hours. The time is determined according to specific needs;

[0058] Secondly, the bamboo material that has been subjected to constant heating treatment is placed in a cold composite antiseptic solution of the same concentration at a temperature of 5-20°C and soaked for 7-14 days, the time being determined according to specific needs. After the bamboo material is cold soaked, the composite antiseptic solution is heated to the same temperature as the first hot soaking, and kept warm for a corresponding time, and then hot soaked again;

[0059] Then, the treated bamboo is naturally dried, and when there is still a certain amount of moisture in it, it is put into a wax tank at 110-125°C, and the composite wax liquid in the wax tank is composed of wax liquid and resol phenolic resin with a mass ratio of 1:2, wherein the resol phenolic resin is concentrated from phenol and formaldehyde with a mass ratio of 1:1. Soak for 0.5-1h, take out the bamboo when the temperature of the wax tank reaches about 70°C, and wipe off the wax liquid on the surface;

[0060] Finally, the bamboo surface is cleaned with a high-pressure cleaner, then dried in the sun for 2-7 days and transferred to a drying area for 6-12 weeks, depending on the situation.

[0061] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An efficient pre-treatment method for testing bamboo properties, characterized in that: The following steps are involved: Step 1: Soak the bamboo material after fumigation to kill the adult insects, larvae and mold spores in a composite antiseptic solution, then heat it constantly to remove the sugar in the bamboo material, and stop heating after the heating time expires; Step 2: soaking the bamboo material after constant heating treatment in a cold composite antiseptic solution, and after the soaking time is over, heating the cold composite antiseptic solution soaked with the bamboo material to a constant temperature, and maintaining hot soaking; Step 3: Dry the bamboo after antiseptic treatment naturally, and then wax it when there is still a certain amount of moisture. Soak the bamboo in a composite wax liquid at 110-125℃ for 0.5-1h, take it out when the temperature of the wax tank reaches about 70℃, and wipe off the wax liquid on the surface; Step 4: Use a high pressure cleaner to clean the bamboo surface, then dry it in the sun for 2-7 days and then transfer it to a drying area for 6-12 weeks.

2. The efficient pre-treatment method for testing bamboo properties according to claim 1, characterized in that: In the step 1, the fumigation method is to use quicklime fermentation tank to boil bamboo.

3. The efficient pre-treatment method for testing bamboo properties according to claim 1, characterized in that: The preservative in the composite preservative solution in step one or step two is composed of borate solution, sodium silicate and ethyl acetate in a mass ratio of (3):(5):(3-3.5).

4. The efficient pre-treatment method for testing bamboo properties according to claim 1, characterized in that: The mass concentration of the composite antiseptic solution in step one or step two is 5%-6%.

5. The efficient pre-treatment method for testing bamboo properties according to claim 1, characterized in that: The composite wax liquid in step three is composed of wax liquid and resol phenolic resin in a mass ratio of (1:2-3).

6. The efficient pre-treatment method for testing bamboo properties according to claim 5, characterized in that: The resol phenolic resin is concentrated from phenol and formaldehyde in a mass ratio of 1:(0.6-1).

7. The efficient pre-treatment method for testing bamboo properties according to claim 1, characterized in that: In the step 1, when the composite antiseptic solution is heated to 60° C., it is kept warm for 24 hours, and when it is heated to 100° C., it is kept warm for 8 hours.

8. The efficient pre-treatment method for testing bamboo properties according to claim 1, characterized in that: In the step 1, cold soaking is performed in the composite antiseptic solution at 5-20° C. for 7-14 days.