CN113321860A - Efficient waterproof material for tunnel and preparation method thereof - Google Patents
Efficient waterproof material for tunnel and preparation method thereof Download PDFInfo
- Publication number
- CN113321860A CN113321860A CN202110623408.4A CN202110623408A CN113321860A CN 113321860 A CN113321860 A CN 113321860A CN 202110623408 A CN202110623408 A CN 202110623408A CN 113321860 A CN113321860 A CN 113321860A
- Authority
- CN
- China
- Prior art keywords
- modified
- bamboo charcoal
- rubber
- charcoal fiber
- paraffin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention relates to the technical field of waterproof materials, and provides a high-efficiency waterproof material for a tunnel and a preparation method thereof in order to solve the problem that the existing waterproof material is poor in fracture resistance and tensile property during construction and use, wherein the high-efficiency waterproof material for the tunnel comprises the following components: filler, modified paraffin, modified rubber, polyvinyl chloride, antioxidant, tackifier, coupling modified bamboo charcoal fiber and polyacrylonitrile fiber. According to the invention, the modified rubber is added into the filler, the modified rubber is firstly placed into a sodium hydroxide solution for soaking and passivating, then the passivated rubber is reacted with an anionic surfactant, the surface of the rubber is modified by the anionic surfactant, so that the rubber can be fully contacted with graphene oxide and a silicon hydride, and the graphene oxide and the silicon hydride are grafted on the surface of the rubber, and the ductility and the strength of the rubber are increased.
Description
Technical Field
The invention relates to the technical field of waterproof materials, in particular to a high-efficiency waterproof material for a tunnel and a preparation method thereof.
Background
The waterproof material is a material for preventing rainwater, snow water and underground water from penetrating into a building for the building enclosure structure, and is a building material commonly used in tunnel construction and maintenance. The variety of waterproof materials includes: asphalt waterproof materials, rubber plastic waterproof materials, cement waterproof materials, and metal waterproof materials. The existing waterproof material for the tunnel has the condition of poor fracture resistance and tensile property during construction and use, so that the waterproof layer formed by the waterproof material is pulled and broken in the construction process to cause the condition of poor waterproof effect.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a high-efficiency waterproof material for a tunnel and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the efficient waterproof material for the tunnel comprises the following components in parts by weight: 40-60 parts of filler, 5-15 parts of modified paraffin, 30-60 parts of modified rubber, 15-25 parts of polyvinyl chloride, 0.2-0.5 part of antioxidant, 0.3-0.8 part of tackifier, 5-10 parts of coupling modified bamboo charcoal fiber and 5-10 parts of polyacrylonitrile fiber;
the modified paraffin is obtained by firstly carrying out emulsification treatment and then modifying by polyethylene and polyamide resin.
The preparation method of the modified paraffin comprises the following steps: according to the following steps of 90: (2-4): (15-30): (5-10) sequentially weighing paraffin, polyethylene, an emulsifier and polyamide resin according to the weight ratio; heating paraffin to melt, adding an emulsifier, fully mixing and emulsifying; and pouring polyethylene and polyamide resin into the emulsified paraffin, and mixing and reacting for 0.5-1h to obtain the modified paraffin.
The preparation method of the modified rubber comprises the following steps: according to the following steps of 90: (1-3): (5-10): (5-8) weighing rubber particles, graphene oxide, hydrosilicon compound and anionic surfactant in sequence according to the weight ratio; and (2) putting the rubber particles into a sodium hydroxide solution, soaking for 1-3h, taking out, cleaning, drying, heating the rubber particles to be molten, adding an anionic surfactant, mixing for 0.5-1h, adding graphene oxide and a silicon hydride, mixing and reacting for 0.5-1h to obtain the modified rubber.
The silicon hydride is one of monosilane, disilane and tetramethylsilane.
The preparation method of the coupled modified bamboo charcoal fiber comprises the following steps: and (2) soaking the bamboo charcoal fiber in a sodium hydroxide solution for 1-2h, taking out the bamboo charcoal fiber, drying, adding a silane coupling agent accounting for 5-15% of the weight of the bamboo charcoal fiber, and reacting for 0.5-1h to obtain the coupled modified bamboo charcoal fiber.
The concentration of the sodium hydroxide solution is 13-20%.
The filler is one or two of calcium carbonate, quartz stone, silicon dioxide and silicon micropowder.
The preparation method of the efficient waterproof material for the tunnel comprises the following steps:
weighing the components in parts by weight;
pouring the tackifier, the antioxidant and the polyvinyl chloride into the filler, and fully mixing to obtain a mixture A;
and pouring the modified paraffin and the modified rubber into the mixture A, heating to 90-110 ℃, fully stirring, reacting for 1-2h, adding the coupled modified bamboo charcoal fiber and the polyacrylonitrile fiber, and reacting for 0.5-1h to obtain the waterproof material.
Modified paraffin is added into the filler, the modified paraffin is fully emulsified firstly, and then polyethylene and polyamide resin are added for modification, the emulsified paraffin is in contact reaction with the polyethylene and the polyamide resin more fully, and the polyethylene and the polyamide resin modify the surface of the paraffin, so that the hydrophobicity of paraffin molecules is increased, and the modified paraffin is applied to the preparation of waterproof materials, and the surface hydrophobicity and the water permeability resistance of the waterproof materials are effectively improved.
Modified rubber is added into the filler, the modified rubber is firstly placed into a sodium hydroxide solution for soaking and passivating, then the passivated rubber is reacted with an anionic surfactant, the surface of the rubber is modified through the anionic surfactant, so that the rubber can be fully contacted with graphene oxide and a silicon hydride, the graphene oxide and the silicon hydride are grafted on the surface of the rubber, and the ductility and the strength of the rubber are improved.
Polyacrylonitrile fiber and coupling modified bamboo charcoal fiber are added in the preparation process, and the polyacrylonitrile fiber and the coupling modified bamboo charcoal fiber are doped in the modified rubber and the filler, so that the tensile property of the prepared waterproof material can be greatly improved; the coupling modified bamboo charcoal fiber is prepared by soaking bamboo charcoal fiber in a sodium hydroxide solution for passivation, so that the structural organization and the surface activity of the bamboo charcoal fiber are changed, and then the surface polarity of the bamboo charcoal fiber is reduced through the reaction of a silane coupling agent and hydroxyl on the surface of the bamboo charcoal fiber, so that the polarity repulsion among the bamboo charcoal fiber, modified rubber and filler is reduced, the coupling modified bamboo charcoal fiber is more closely and fully mixed and blended with the modified rubber and the filler, and the uniform tensile resistance of the waterproof material is ensured.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
The waterproof material is a material for preventing rainwater, snow water and underground water from penetrating into a building for the building enclosure structure, and is a building material commonly used in tunnel construction and maintenance. The variety of waterproof materials includes: asphalt waterproof materials, rubber plastic waterproof materials, cement waterproof materials, and metal waterproof materials. The existing waterproof material for the tunnel has the condition of poor fracture resistance and tensile property during construction and use, so that the waterproof layer formed by the waterproof material is pulled and broken in the construction process to cause the condition of poor waterproof effect. In order to solve the technical problems, the embodiment of the invention provides a high-efficiency waterproof material for a tunnel and a preparation method thereof.
In the embodiment of the invention, the efficient waterproof material for the tunnel comprises the following components in parts by weight: 40-60 parts of filler, 5-15 parts of modified paraffin, 30-60 parts of modified rubber, 15-25 parts of polyvinyl chloride, 0.2-0.5 part of antioxidant, 0.3-0.8 part of tackifier, 5-10 parts of coupling modified bamboo charcoal fiber and 5-10 parts of polyacrylonitrile fiber;
the modified paraffin is obtained by firstly carrying out emulsification treatment and then modifying by polyethylene and polyamide resin.
According to the invention, the modified paraffin is added into the filler, the modified paraffin is fully emulsified firstly, and then the polyethylene and the polyamide resin are added for modification, so that the emulsified paraffin is in contact reaction with the polyethylene and the polyamide resin more fully, and the polyethylene and the polyamide resin modify the surface of the paraffin, so that the hydrophobicity of paraffin molecules is increased, and the modified paraffin is applied to the preparation of a waterproof material, and the surface hydrophobicity and the water permeability resistance of the waterproof material are effectively improved.
According to the invention, the modified rubber is added into the filler, the modified rubber is firstly placed into a sodium hydroxide solution for soaking and passivating, then the passivated rubber is reacted with an anionic surfactant, the surface of the rubber is modified by the anionic surfactant, so that the rubber can be fully contacted with graphene oxide and a silicon hydride, and the graphene oxide and the silicon hydride are grafted on the surface of the rubber, so that the ductility and the strength of the rubber are increased.
In the invention, polyacrylonitrile fiber and coupling modified bamboo charcoal fiber are also added in the preparation process, and the polyacrylonitrile fiber and the coupling modified bamboo charcoal fiber are doped in the modified rubber and the filler, so that the tensile property of the prepared waterproof material can be greatly improved; the coupling modified bamboo charcoal fiber is prepared by soaking bamboo charcoal fiber in a sodium hydroxide solution for passivation, so that the structural organization and the surface activity of the bamboo charcoal fiber are changed, and then the surface polarity of the bamboo charcoal fiber is reduced through the reaction of a silane coupling agent and hydroxyl on the surface of the bamboo charcoal fiber, so that the polarity repulsion among the bamboo charcoal fiber, modified rubber and filler is reduced, the coupling modified bamboo charcoal fiber is more closely and fully mixed and blended with the modified rubber and the filler, and the uniform tensile resistance of the waterproof material is ensured.
The technical effects of the efficient waterproof material for tunnels and the preparation method thereof of the present invention will be further described with reference to specific examples, but the specific implementation methods mentioned in the examples are only illustrative and explanatory of the technical solution of the present invention, and do not limit the implementation scope of the present invention, and all modifications and substitutions based on the above principles shall fall within the protection scope of the present invention.
Example 1
Weighing 90 g of paraffin, 2 g of polyethylene, 15 g of emulsifier and 5 g of polyamide resin in sequence; heating paraffin to melt, adding an emulsifier, fully mixing and emulsifying; pouring polyethylene and polyamide resin into emulsified paraffin, and mixing and reacting for 0.5h to obtain modified paraffin;
weighing 90 g of rubber particles, 1 g of graphene oxide, 5 g of monosilane and 5 g of anionic surfactant in sequence; soaking rubber particles in a sodium hydroxide solution for 1h, taking out, cleaning and drying the rubber particles, heating the rubber particles to be molten, adding an anionic surfactant, mixing for 0.5h, adding graphene oxide and silane, mixing and reacting for 0.5h to obtain modified rubber;
weighing 100 g of bamboo charcoal fiber, putting the bamboo charcoal fiber into a 13% sodium hydroxide solution, soaking for 1h, taking out the bamboo charcoal fiber, drying, adding 5 g of silane coupling agent, and reacting for 0.5h to obtain the coupled modified bamboo charcoal fiber;
weighing 40 g of quartz stone powder, 5 g of modified paraffin, 30 g of modified rubber, 15 g of polyvinyl chloride, 0.2 g of antioxidant, 0.3 g of tackifier, 5 g of coupled modified bamboo charcoal fiber and 5 g of polyacrylonitrile fiber; and pouring the tackifier, the antioxidant and the polyvinyl chloride into the quartzite powder, fully mixing, adding the modified paraffin and the modified rubber, heating to 90 ℃, fully stirring, reacting for 1h, adding the coupled modified bamboo charcoal fiber and the polyacrylonitrile fiber, and reacting for 0.5h to obtain the waterproof material.
Example 2
Weighing 90 g of paraffin, 4 g of polyethylene, 30 g of emulsifier and 10 g of polyamide resin in sequence; heating paraffin to melt, adding an emulsifier, fully mixing and emulsifying; pouring polyethylene and polyamide resin into emulsified paraffin, and mixing and reacting for 1h to obtain modified paraffin;
weighing 90 g of rubber particles, 3 g of graphene oxide, 10 g of disilane and 8 g of anionic surfactant in sequence; soaking rubber particles in a sodium hydroxide solution for 3 hours, taking out, cleaning and drying the rubber particles, heating the rubber particles to be molten, adding an anionic surfactant, mixing for 1 hour, adding graphene oxide and disilane, mixing and reacting for 1 hour to obtain modified rubber;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 20% sodium hydroxide solution for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 60 g of quartz stone powder, 15 g of modified paraffin, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupling modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; and pouring the tackifier, the antioxidant and the polyvinyl chloride into the quartzite powder, fully mixing, adding the modified paraffin and the modified rubber, heating to 110 ℃, fully stirring, reacting for 2 hours, adding the coupled modified bamboo charcoal fiber and the polyacrylonitrile fiber, and reacting for 1 hour to obtain the waterproof material.
Example 3
Weighing 90 g of paraffin, 3 g of polyethylene, 22 g of emulsifier and 7 g of polyamide resin in sequence; modified paraffin was obtained in the same manner as in example 2;
weighing 90 g of rubber particles, 2 g of graphene oxide, 7 g of disilane and 6 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 2;
weighing 100 g of bamboo charcoal fiber, putting the bamboo charcoal fiber into a 16% sodium hydroxide solution, soaking for 1.5h, taking out the bamboo charcoal fiber, drying, adding 10 g of silane coupling agent, and reacting for 0.75h to obtain the coupled modified bamboo charcoal fiber;
weighing 50 g of quartz stone powder, 10 g of modified paraffin, 45 g of modified rubber, 20 g of polyvinyl chloride, 0.35 g of antioxidant, 0.55 g of tackifier, 7 g of coupled modified bamboo charcoal fiber and 7 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Example 4
Weighing 90 g of paraffin, 3.5 g of polyethylene, 28 g of emulsifier and 9 g of polyamide resin in sequence; modified paraffin was obtained in the same manner as in example 2;
weighing 90 g of rubber particles, 2.8 g of graphene oxide, 9 g of disilane and 7.5 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 2;
weighing 100 g of bamboo charcoal fiber, putting the bamboo charcoal fiber into a sodium hydroxide solution with the concentration of 18%, soaking for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 55 g of quartz stone powder, 12 g of modified paraffin, 55 g of modified rubber, 22 g of polyvinyl chloride, 0.4 g of antioxidant, 0.6 g of tackifier, 8 g of coupled modified bamboo charcoal fiber and 8 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Example 5
Weighing 90 g of paraffin, 2.2 g of polyethylene, 16 g of emulsifier and 6 g of polyamide resin in sequence; modified paraffin wax was obtained in the same manner as in example 1;
weighing 90 g of rubber particles, 1.2 g of graphene oxide, 6 g of disilane and 6 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 1;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 15% sodium hydroxide solution for 1h, taking out the bamboo charcoal fiber, drying, adding 5 g of silane coupling agent, and reacting for 0.5h to obtain the coupled modified bamboo charcoal fiber;
weighing 45 g of quartz stone powder, 6 g of modified paraffin, 35 g of modified rubber, 18 g of polyvinyl chloride, 0.3 g of antioxidant, 0.4 g of tackifier, 6 g of coupled modified bamboo charcoal fiber and 6 g of polyacrylonitrile fiber; the same procedure as in example 1 was repeated to obtain a water-repellent material.
Example 6
Weighing 90 g of paraffin, 2 g of polyethylene, 15 g of emulsifier and 5 g of polyamide resin in sequence; modified paraffin wax was obtained in the same manner as in example 1;
weighing 90 g of rubber particles, 1 g of graphene oxide, 5 g of disilane and 5 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 1;
weighing 100 g of bamboo charcoal fiber, putting the bamboo charcoal fiber into a 13% sodium hydroxide solution, soaking for 1h, taking out the bamboo charcoal fiber, drying, adding 5 g of silane coupling agent, and reacting for 0.5h to obtain the coupled modified bamboo charcoal fiber;
weighing 60 g of quartz stone powder, 15 g of modified paraffin, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupling modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Example 7
Weighing 90 g of paraffin, 4 g of polyethylene, 30 g of emulsifier and 10 g of polyamide resin in sequence; modified paraffin was obtained in the same manner as in example 2;
weighing 90 g of rubber particles, 3 g of graphene oxide, 10 g of disilane and 8 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 2;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 20% sodium hydroxide solution for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 40 g of quartz stone powder, 5 g of modified paraffin, 30 g of modified rubber, 15 g of polyvinyl chloride, 0.2 g of antioxidant, 0.3 g of tackifier, 5 g of coupled modified bamboo charcoal fiber and 5 g of polyacrylonitrile fiber; the same procedure as in example 1 was repeated to obtain a water-repellent material.
The mechanical properties and water resistance of the waterproof materials prepared in examples 1 to 7 of the present invention were tested. The mechanical properties mainly comprise tensile strength, elongation at break and bonding strength, and the mechanical properties of the waterproof material are tested by referring to a QCR517.1-2017 railway engineering film spraying waterproof material performance test method; the waterproof performance mainly comprises tensile strength and elongation at break after water immersion, and the waterproof performance of the waterproof material is evaluated according to GBT 16777-. And selecting common waterproof materials in the market as a control group, and testing the mechanical property and the water resistance of the waterproof material. And the test results are shown in table 1:
table 1
In summary, it can be seen from table 1 that the mechanical properties and water resistance of the waterproof materials prepared in examples 1 to 7 of the present invention are superior to those of the waterproof material of the control group. The tensile strength, elongation at break, adhesive strength, barrier properties, tensile strength after immersion, and elongation at break obtained in example 2 were all the best.
Further, the invention also makes systematic research on the process conditions in the high-efficiency waterproof material for the tunnel and the preparation method thereof, and only the following test schemes that the change of the process conditions has obvious influence on the effect of the high-efficiency waterproof material for the tunnel are explained, all taking the process conditions of the embodiment 2 as the basis, specifically seen in the comparative examples 1-11:
comparative example 1
Weighing 90 g of rubber particles, 3 g of graphene oxide, 10 g of disilane and 8 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 2;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 20% sodium hydroxide solution for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 60 g of quartz stone powder, 15 g of paraffin, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupling modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Comparative example 2
Weighing 90 g of paraffin, 4 g of polyethylene, 30 g of emulsifier and 10 g of polyamide resin in sequence; heating paraffin to be molten, pouring polyethylene and polyamide resin into the paraffin, and mixing and reacting for 1h to obtain modified paraffin;
weighing 90 g of rubber particles, 3 g of graphene oxide, 10 g of disilane and 8 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 2;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 20% sodium hydroxide solution for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 60 g of quartz stone powder, 15 g of modified paraffin, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupling modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Comparative example 3
Weighing 90 g of rubber particles, 3 g of graphene oxide, 10 g of disilane and 8 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 2;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 20% sodium hydroxide solution for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 60 g of quartz stone powder, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupling modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; and pouring the tackifier, the antioxidant and polyvinyl chloride into the quartzite powder, fully mixing, adding the modified rubber, heating to 110 ℃, fully stirring, reacting for 2 hours, adding the coupled modified bamboo charcoal fiber and the polyacrylonitrile fiber, and reacting for 1 hour to obtain the waterproof material.
Comparative example 4
Weighing 90 g of paraffin, 4 g of polyethylene, 30 g of emulsifier and 10 g of polyamide resin in sequence; modified paraffin was obtained in the same manner as in example 2;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 20% sodium hydroxide solution for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 60 g of quartz stone powder, 15 g of modified paraffin, 60 g of rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupling modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Comparative example 5
Weighing 90 g of paraffin, 4 g of polyethylene, 30 g of emulsifier and 10 g of polyamide resin in sequence; modified paraffin was obtained in the same manner as in example 2;
weighing 90 g of rubber particles, 10 g of disilane and 8 g of anionic surfactant in sequence; soaking rubber particles in a sodium hydroxide solution for 3 hours, taking out, cleaning and drying the rubber particles, heating the rubber particles to be molten, adding an anionic surfactant, mixing for 1 hour, adding disilane, mixing and reacting for 1 hour to obtain modified rubber;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 20% sodium hydroxide solution for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 60 g of quartz stone powder, 15 g of modified paraffin, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupling modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Comparative example 6
Weighing 90 g of paraffin, 4 g of polyethylene, 30 g of emulsifier and 10 g of polyamide resin in sequence; modified paraffin was obtained in the same manner as in example 2;
weighing 90 g of rubber particles, 3 g of graphene oxide and 8 g of anionic surfactant in sequence; soaking rubber particles in a sodium hydroxide solution for 3 hours, taking out, cleaning and drying the rubber particles, heating the rubber particles to be molten, adding an anionic surfactant, mixing for 1 hour, adding graphene oxide, mixing and reacting for 1 hour to obtain modified rubber;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 20% sodium hydroxide solution for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 60 g of quartz stone powder, 15 g of modified paraffin, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupling modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Comparative example 7
Weighing 90 g of paraffin, 4 g of polyethylene, 30 g of emulsifier and 10 g of polyamide resin in sequence; modified paraffin was obtained in the same manner as in example 2;
weighing 90 g of rubber particles, 3 g of graphene oxide, 10 g of disilane and 8 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 2;
weighing 100 g of bamboo charcoal fiber, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 60 g of quartz stone powder, 15 g of modified paraffin, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupling modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Comparative example 8
Weighing 90 g of paraffin, 4 g of polyethylene, 30 g of emulsifier and 10 g of polyamide resin in sequence; modified paraffin was obtained in the same manner as in example 2;
weighing 90 g of rubber particles, 3 g of graphene oxide, 10 g of disilane and 8 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 2;
weighing 60 g of quartz stone powder, 15 g of modified paraffin, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Comparative example 9
Weighing 90 g of paraffin, 4 g of polyethylene, 30 g of emulsifier and 10 g of polyamide resin in sequence; modified paraffin was obtained in the same manner as in example 2;
weighing 90 g of rubber particles, 3 g of graphene oxide, 10 g of disilane and 8 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 2;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 20% sodium hydroxide solution for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 60 g of calcium carbonate powder, 15 g of modified paraffin, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupling modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Comparative example 10
Weighing 90 g of paraffin, 4 g of polyethylene, 30 g of emulsifier and 10 g of polyamide resin in sequence; modified paraffin was obtained in the same manner as in example 2;
weighing 90 g of rubber particles, 3 g of graphene oxide, 10 g of disilane and 8 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 2;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 20% sodium hydroxide solution for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 60 g of silicon dioxide powder, 15 g of modified paraffin, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupling modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
Comparative example 11
Weighing 90 g of paraffin, 4 g of polyethylene, 30 g of emulsifier and 10 g of polyamide resin in sequence; modified paraffin was obtained in the same manner as in example 2;
weighing 90 g of rubber particles, 3 g of graphene oxide, 10 g of disilane and 8 g of anionic surfactant in sequence; modified rubber is obtained by the same preparation method as the example 2;
weighing 100 g of bamboo charcoal fiber, soaking the bamboo charcoal fiber in 20% sodium hydroxide solution for 2h, taking out the bamboo charcoal fiber, drying, adding 15 g of silane coupling agent, and reacting for 1h to obtain the coupled modified bamboo charcoal fiber;
weighing 30 g of silicon dioxide powder, 30 g of calcium carbonate powder, 15 g of modified paraffin, 60 g of modified rubber, 25 g of polyvinyl chloride, 0.5 g of antioxidant, 0.8 g of tackifier, 10 g of coupled modified bamboo charcoal fiber and 10 g of polyacrylonitrile fiber; the same procedure as in example 2 was repeated to obtain a water-repellent material.
The mechanical properties and water resistance of the waterproof materials prepared in comparative examples 1-11 were tested. The mechanical properties mainly comprise tensile strength, elongation at break and bonding strength, and the mechanical properties of the waterproof material are tested by referring to a QCR517.1-2017 railway engineering film spraying waterproof material performance test method; the waterproof performance mainly comprises tensile strength and elongation at break after water immersion, and the waterproof performance of the waterproof material is evaluated according to GBT 16777-. The test results are shown in table 2 below:
TABLE 2
In summary, it can be seen from Table 2 that the waterproof materials prepared in comparative examples 1 to 11 are inferior in both mechanical properties and water resistance to the waterproof materials prepared in example 2. As can be seen from the data of comparative examples 1-3 in the table, the modified paraffin has a great influence on the water resistance of the waterproof material; as shown in comparative examples 4-8 in the table, the modified rubber and the coupled modified bamboo charcoal fiber have great influence on the mechanical property of the waterproof material and have obvious influence on the tensile strength and the elongation at break of the waterproof material; as is clear from comparative example 4 in the table, the modified rubber also has an influence on the adhesive strength of the waterproof material.
Wherein unmodified normal paraffin wax is added in the preparation process of the comparative example 1; comparative example 2 in the process of preparing modified paraffin, no emulsification treatment was performed on paraffin first; comparative example 3 in the process of preparing the waterproof material, no paraffin or modified paraffin was added; comparative example 4 an unmodified conventional rubber was added during the preparation; comparative example 5 no graphene oxide was added during the preparation of the modified rubber; comparative example 6 no hydrosilation compound was added during the preparation of the modified rubber; comparative example 7 when preparing the coupled modified bamboo charcoal fiber, the bamboo charcoal fiber is not firstly put into the sodium hydroxide solution for soaking and passivating; the non-modified common bamboo charcoal fiber is added when the waterproof material is prepared according to the comparative example 8; the filler selected in comparative example 9 is calcium carbonate powder; the filler selected in comparative example 10 was silica powder; the filler selected for comparative example 11 was a mixture of calcium carbonate powder and silicon dioxide powder.
In summary, according to the efficient waterproof material for tunnels and the preparation method thereof provided in this embodiment, the modified paraffin is added to the filler, the modified paraffin is firstly fully emulsified by the paraffin, and then the polyethylene and the polyamide resin are added for modification, the contact reaction between the emulsified paraffin and the polyethylene and the polyamide resin is more sufficient, and the polyethylene and the polyamide resin modify the surface of the paraffin, so that the hydrophobicity of paraffin molecules is increased, and when the efficient waterproof material is applied to the preparation of the waterproof material, the surface hydrophobicity and the water permeability of the waterproof material are effectively improved.
Modified rubber is added into the filler, the modified rubber is firstly placed into a sodium hydroxide solution for soaking and passivating, then the passivated rubber is reacted with an anionic surfactant, the surface of the rubber is modified through the anionic surfactant, so that the rubber can be fully contacted with graphene oxide and a silicon hydride, the graphene oxide and the silicon hydride are grafted on the surface of the rubber, and the ductility and the strength of the rubber are improved.
Polyacrylonitrile fiber and coupling modified bamboo charcoal fiber are added in the preparation process, and the polyacrylonitrile fiber and the coupling modified bamboo charcoal fiber are doped in the modified rubber and the filler, so that the tensile property of the prepared waterproof material can be greatly improved; the coupling modified bamboo charcoal fiber is prepared by soaking bamboo charcoal fiber in a sodium hydroxide solution for passivation, so that the structural organization and the surface activity of the bamboo charcoal fiber are changed, and then the surface polarity of the bamboo charcoal fiber is reduced through the reaction of a silane coupling agent and hydroxyl on the surface of the bamboo charcoal fiber, so that the polarity repulsion among the bamboo charcoal fiber, modified rubber and filler is reduced, the coupling modified bamboo charcoal fiber is more closely and fully mixed and blended with the modified rubber and the filler, and the uniform tensile resistance of the waterproof material is ensured.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The efficient waterproof material for the tunnel is characterized by comprising the following components in parts by weight: 40-60 parts of filler, 5-15 parts of modified paraffin, 30-60 parts of modified rubber, 15-25 parts of polyvinyl chloride, 0.2-0.5 part of antioxidant, 0.3-0.8 part of tackifier, 5-10 parts of coupling modified bamboo charcoal fiber and 5-10 parts of polyacrylonitrile fiber;
the modified paraffin is obtained by firstly carrying out emulsification treatment and then modifying by polyethylene and polyamide resin.
2. The efficient waterproof material for the tunnel according to claim 1, wherein the preparation method of the modified paraffin comprises the following steps: according to the following steps of 90: (2-4): (15-30): (5-10) sequentially weighing paraffin, polyethylene, an emulsifier and polyamide resin according to the weight ratio; heating paraffin to melt, adding an emulsifier, fully mixing and emulsifying; and pouring polyethylene and polyamide resin into the emulsified paraffin, and mixing and reacting for 0.5-1h to obtain the modified paraffin.
3. The efficient waterproof material for the tunnel according to claim 2, wherein the preparation method of the modified rubber comprises the following steps: according to the following steps of 90: (1-3): (5-10): (5-8) weighing rubber particles, graphene oxide, hydrosilicon compound and anionic surfactant in sequence according to the weight ratio; and (2) putting the rubber particles into a sodium hydroxide solution, soaking for 1-3h, taking out, cleaning, drying, heating the rubber particles to be molten, adding an anionic surfactant, mixing for 0.5-1h, adding graphene oxide and a silicon hydride, mixing and reacting for 0.5-1h to obtain the modified rubber.
4. The efficient waterproof material for tunnels according to claim 3, wherein the hydrosilicon compound is one of monosilane, disilane and tetramethylsilane.
5. The efficient waterproof material for the tunnel according to claim 1, wherein the preparation method of the coupled modified bamboo charcoal fiber comprises the following steps: and (2) soaking the bamboo charcoal fiber in a sodium hydroxide solution for 1-2h, taking out the bamboo charcoal fiber, drying, adding a silane coupling agent accounting for 5-15% of the weight of the bamboo charcoal fiber, and reacting for 0.5-1h to obtain the coupled modified bamboo charcoal fiber.
6. The highly effective waterproof material for tunnel according to any one of claims 3 to 5, wherein the concentration of the sodium hydroxide solution is 13 to 20%.
7. The efficient waterproof material for the tunnel according to claim 1, which is characterized by comprising the following components in parts by weight: 45-55 parts of filler, 6-12 parts of modified paraffin, 35-55 parts of modified rubber, 18-22 parts of polyvinyl chloride, 0.3-0.4 part of antioxidant, 0.4-0.6 part of tackifier, 6-8 parts of coupling modified bamboo charcoal fiber and 6-8 parts of polyacrylonitrile fiber.
8. The efficient waterproof material for tunnels according to claim 1, wherein the filler is one or two of calcium carbonate, quartz stone, silica and silica micropowder.
9. The method for preparing a high-efficiency waterproof material for tunnels as claimed in any one of claims 1 to 8, which comprises the following steps:
weighing the components in parts by weight;
pouring the tackifier, the antioxidant and the polyvinyl chloride into the filler, and fully mixing to obtain a mixture A;
and pouring the modified paraffin and the modified rubber into the mixture A, heating, fully stirring, reacting for 1-2h, adding the coupled modified bamboo charcoal fiber and the polyacrylonitrile fiber, and reacting for 0.5-1h to obtain the waterproof material.
10. The method for preparing a highly effective waterproof material for tunnel according to claim 9, wherein the mixture A is heated to 90-110 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110623408.4A CN113321860B (en) | 2021-06-04 | 2021-06-04 | Efficient waterproof material for tunnel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110623408.4A CN113321860B (en) | 2021-06-04 | 2021-06-04 | Efficient waterproof material for tunnel and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113321860A true CN113321860A (en) | 2021-08-31 |
| CN113321860B CN113321860B (en) | 2022-07-15 |
Family
ID=77419816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110623408.4A Active CN113321860B (en) | 2021-06-04 | 2021-06-04 | Efficient waterproof material for tunnel and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113321860B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080207809A1 (en) * | 2006-06-30 | 2008-08-28 | Four Road Research Ltd. | Dip forming latex composition containing crosslinking agent and dip formed article obtained therefrom |
| WO2011046255A1 (en) * | 2009-10-13 | 2011-04-21 | 주식회사 리뉴시스템 | System and method for manufacturing adhesive waterproof material using modified emulsification asphalt |
| WO2011055871A1 (en) * | 2009-11-04 | 2011-05-12 | 주식회사 로드씰 | Rubberized-asphalt-based self-adhesive waterproofing agent, self-adhesive waterproofing sheet including same, and construction method using same |
| US20120196956A1 (en) * | 2009-10-13 | 2012-08-02 | Sang Keun Lee | Non-curing adhesive waterproof material using recycled rubber, and manufacturing method thereof |
| CN107216672A (en) * | 2017-08-01 | 2017-09-29 | 合肥广民建材有限公司 | A kind of wood plastic composite and preparation method |
| WO2018036430A1 (en) * | 2016-08-22 | 2018-03-01 | 广东纳路纳米科技有限公司 | Modified nanometer composite rubber material and preparation method therefor |
-
2021
- 2021-06-04 CN CN202110623408.4A patent/CN113321860B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080207809A1 (en) * | 2006-06-30 | 2008-08-28 | Four Road Research Ltd. | Dip forming latex composition containing crosslinking agent and dip formed article obtained therefrom |
| WO2011046255A1 (en) * | 2009-10-13 | 2011-04-21 | 주식회사 리뉴시스템 | System and method for manufacturing adhesive waterproof material using modified emulsification asphalt |
| US20120196956A1 (en) * | 2009-10-13 | 2012-08-02 | Sang Keun Lee | Non-curing adhesive waterproof material using recycled rubber, and manufacturing method thereof |
| WO2011055871A1 (en) * | 2009-11-04 | 2011-05-12 | 주식회사 로드씰 | Rubberized-asphalt-based self-adhesive waterproofing agent, self-adhesive waterproofing sheet including same, and construction method using same |
| WO2018036430A1 (en) * | 2016-08-22 | 2018-03-01 | 广东纳路纳米科技有限公司 | Modified nanometer composite rubber material and preparation method therefor |
| CN107216672A (en) * | 2017-08-01 | 2017-09-29 | 合肥广民建材有限公司 | A kind of wood plastic composite and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113321860B (en) | 2022-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113354334B (en) | Composite fiber anti-cracking agent | |
| CN102050608B (en) | Polymer cement waterproof paint and method for preparing waterproof coating layer | |
| CN107628788B (en) | Cement-based waterproof material for repairing concrete cracks and preparation method thereof | |
| CN101875786A (en) | Single-component room temperature vulcanized organosilicon sealant and preparation method thereof | |
| CN114671642A (en) | Waterproof impervious concrete with self-repairing function | |
| CN110256011B (en) | Polymer cement waterproof coating and preparation method thereof | |
| CN109913006B (en) | Building interface agent and preparation method and application thereof | |
| CN114292073A (en) | Aeolian sand anti-freezing concrete capable of being printed in 3D mode and preparation method and using method thereof | |
| CN114105547B (en) | Water-dispersion-resistant concrete and preparation method thereof | |
| CN110183187A (en) | A kind of modified water-proofing anticracking cement mortar | |
| CN113321860B (en) | Efficient waterproof material for tunnel and preparation method thereof | |
| CN111559895B (en) | Low-water-absorption regenerated GRC material and preparation method thereof | |
| CN116640499B (en) | Polyurea waterproof composition and preparation method thereof | |
| CN106746889A (en) | A kind of gypsum base grouting material solid defoaming agent and preparation method thereof | |
| CN111592848A (en) | High-thixotropy underwater epoxy grouting material and preparation method thereof | |
| CN113502139B (en) | Low-temperature-resistant slow-bonding prestressed tendon | |
| CN113563771B (en) | Anti-cracking sound-insulation composite material and preparation method thereof | |
| CN104650724A (en) | Building heat-insulating waterproof paint and preparation method thereof | |
| CN114890729B (en) | High-seismic-resistance recycled aggregate concrete | |
| CN109913078B (en) | Bio-fiber road sealing material and preparation method thereof | |
| CN104650725A (en) | Waterproof coating with excellent filming property and preparation method thereof | |
| CN107254278A (en) | A kind of preparation method of the water-resistant adhesive efficiently solidified | |
| CN113045267A (en) | Low-shrinkage waterproof concrete for underground engineering and preparation process thereof | |
| CN116082935B (en) | Waterproof coating composition and preparation method thereof | |
| CN104909802A (en) | Micro-foam board sound insulation cushion material dry powder interface agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |