CN111363280A - Inorganic fiber reinforced composite double-wall corrugated pipe and preparation method thereof - Google Patents

Inorganic fiber reinforced composite double-wall corrugated pipe and preparation method thereof Download PDF

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CN111363280A
CN111363280A CN202010343861.5A CN202010343861A CN111363280A CN 111363280 A CN111363280 A CN 111363280A CN 202010343861 A CN202010343861 A CN 202010343861A CN 111363280 A CN111363280 A CN 111363280A
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inorganic fiber
corrugated pipe
reinforced composite
fiber reinforced
wall corrugated
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祝华汉
祝保灵
黄洪斌
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Hainan Huasu New Pipe Industry Co ltd
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Hainan Huasu New Pipe Industry Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/22—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C08L27/24—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers modified by chemical after-treatment halogenated
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/22—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers modified by chemical after-treatment
    • C08J2327/24—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers modified by chemical after-treatment halogenated
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
    • C08J2423/28—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
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  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention provides an inorganic fiber composite material and a preparation method thereof, wherein the inorganic fiber composite material comprises the following raw materials in percentage by weight: 40-60% of chlorinated polyvinyl chloride, 0.3-1.5% of chlorinated polyethylene, 0.3-1.6% of ACR resin, 3-7% of inorganic fiber, 20-40% of light calcium carbonate, 1-6% of calcium zinc stabilizer, 3-8% of stearic acid, 0.1-2% of paraffin and 0.1-2% of color master batch.

Description

Inorganic fiber reinforced composite double-wall corrugated pipe and preparation method thereof
Technical Field
The invention relates to the field of corrugated pipe materials, in particular to an inorganic fiber reinforced composite double-wall corrugated pipe and a preparation method thereof.
Background
Along with the accelerated treatment of water pollution in China, the management of urban drainage facilities is extremely strict, the application range of the plastic pipeline industry in China is continuously expanded, the field of buried drain pipes in the field with the largest market potential among the fields is the same as that of pipes with polyvinyl chloride as a main component, the existing PVC double-wall corrugated pipe is a product which is developed rapidly in China, the corrugated pipe saves raw materials, is low in engineering cost, convenient to construct, smooth in inner wall, small in friction coefficient, large in flow and wide in application range, but the existing PVC double-wall corrugated pipe in the market has great defects in corrosion resistance, compressive strength and impact resistance.
Disclosure of Invention
In view of the above, the present invention provides an inorganic fiber reinforced composite double-wall corrugated pipe and a method for manufacturing the same, which solve the above problems.
The technical scheme of the invention is realized as follows: an inorganic fiber reinforced composite double-wall corrugated pipe: comprises the following raw materials in percentage by weight: 40-60% of chlorinated polyvinyl chloride, 0.3-1.5% of chlorinated polyethylene, 0.3-1.6% of ACR resin, 3-7% of inorganic fiber, 20-40% of light calcium carbonate, 1-6% of calcium zinc stabilizer, 3-8% of stearic acid, 0.1-2% of paraffin and 0.1-2% of color master batch, wherein the inorganic fiber is prepared from the following components in percentage by mass of 1-3: 0.3-0.8: 0.6 to 1.2 of a mixture of carbon fibers, white mud fibers and sepiolite fibers.
Further, 50% of chlorinated polyvinyl chloride, 1% of chlorinated polyethylene, 1% of ACR resin, 5% of inorganic fiber, 30% of light calcium carbonate, 3% of calcium-zinc stabilizer, 5% of stearic acid, 1% of paraffin and 1% of color master batch, wherein the inorganic fiber is prepared from the following components in percentage by mass: 0.5: 0.9 of a mixture of carbon fibers, white mud fibers, sepiolite fibers.
Furthermore, the light calcium carbonate is active light calcium carbonate, and the granularity is 3000 meshes.
Further, the inorganic fiber silicon dioxide content is more than 83% by mass, the calcium oxide content is more than 3% by mass, and the magnesium oxide content is more than 1% by mass.
Further, the preparation method of the inorganic fiber reinforced composite double-wall corrugated pipe comprises the following steps:
s1, putting the chlorinated polyvinyl chloride, the chlorinated polyethylene, the ACR resin and the stearic acid into preheating equipment, preheating for 30-60 min at 50-80 ℃, then putting the materials into high-temperature mixing equipment, stirring at a high speed for 3-6 h, stopping stirring, and naturally cooling to 40-50 ℃ to prepare a mixed material A;
s2, according to 1: 3-7, stirring and soaking the modifier and the inorganic fiber material at 90-150 ℃ for 2-5 h, and then putting the modified inorganic fiber into a jet mill for grinding for 30-80 min;
s3, putting the mixed material A and the inorganic fiber material into a cold mixer, and stirring at the temperature of-2-10 ℃ for 30-60 min at 300-500 rpm to obtain a mixed material B;
and S4, adding the mixture B obtained in the step S3, light calcium carbonate, a calcium zinc stabilizer, paraffin and color master into a double-screw extruder for melt mixing, extruding and granulating, and cooling and forming to obtain the inorganic fiber reinforced composite double-wall corrugated pipe.
Further, the temperature of the high-temperature mixing equipment is 150-200 ℃.
Further, the stirring speed of the high-temperature mixing equipment is 6000-8000 rpm.
Further, the modifier is prepared from the following components in a mass ratio of 0.3-0.6: 1-1.2: 0.09-0.12: 0.6-0.9 of a mixture of polyvinyl alcohol aqueous solution, sucrose laurate, sucrose palmitate, and polyglycerol monostearate.
Furthermore, the grinding gas amount in the jet mill is 5-8 m3Min, and the air pressure is 1-3 Mpa.
Furthermore, the extruding temperature of a machine barrel in the double-screw extruder is 100-150 ℃, and the temperature of a die is 160-200 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the inorganic fiber reinforced composite double-wall corrugated pipe is made up by using composite resin as main raw material, adding inorganic fiber and other auxiliary materials to raise its toughness and rigidity, extruding and forming, and taking into account the properties of inorganic fiber and base body so as to obtain the invented engineering structure pipeline with more excellent comprehensive properties.
The corrugated pipe comprises a corrugated pipe body, a corrugated pipe body and inorganic fibers, wherein the corrugated pipe body is made of inorganic fibers, the inorganic fibers are formed by modifying a mixture of carbon fibers, white clay fibers and sepiolite fibers according to a scientific ratio, the inorganic fibers are soaked in a specific modifier in a scientific ratio, the performance of the inorganic fibers is enhanced, the inorganic fibers are mixed at a temperature of-2-10 ℃, the inorganic fibers are well dissolved in the mixed material, the performance of the inorganic fiber materials is combined with the performance of the mixed material, the corrugated pipe body has an effect of inhibiting fatigue crack expansion, when cracks expand from the surface to the inner layer and reach a certain fiber orientation layer surface, the crack expansion is split and dispersed in the layer surface, and the fatigue strength of the corrugated pipe is greatly improved.
The inorganic fiber reinforced composite double-wall corrugated pipe is mainly used for drainage outside buildings, farmland, industry and life.
Detailed Description
In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention.
The experimental methods used in the examples of the present invention are all conventional methods unless otherwise specified.
The materials, reagents and the like used in the examples of the present invention can be obtained commercially without specific description.
Example 1
An inorganic fiber reinforced composite double-wall corrugated pipe: comprises the following raw materials in percentage by weight: 40% of chlorinated polyvinyl chloride, 0.3% of chlorinated polyethylene, 0.3% of ACR resin, 3% of inorganic fiber, 20% of light calcium carbonate, 1% of calcium-zinc stabilizer, 3% of stearic acid, 0.1% of paraffin and 0.1% of color master batch, wherein the inorganic fiber is prepared from the following raw materials in a mass ratio of 1: 0.3: 0.6 of a mixture of carbon fibers, white mud fibers and sepiolite fibers, wherein the light calcium carbonate is active light calcium carbonate with the granularity of 3000 meshes, the mass percentage content of the inorganic fiber silicon dioxide is more than 83 percent, the content of calcium oxide is more than 3 percent, and the content of magnesium oxide is more than 1 percent.
Example 2
An inorganic fiber reinforced composite double-wall corrugated pipe: comprises the following raw materials in percentage by weight: 60% of chlorinated polyvinyl chloride, 1.5% of chlorinated polyethylene, 1.6% of ACR resin, 7% of inorganic fiber, 40% of light calcium carbonate, 6% of calcium-zinc stabilizer, 8% of stearic acid, 2% of paraffin and 2% of color master batch, wherein the inorganic fiber is prepared from the following components in percentage by mass of 3: 0.8: 1.2 of a mixture of carbon fibers, white mud fibers and sepiolite fibers, wherein the light calcium carbonate is active light calcium carbonate with the granularity of 3000 meshes, the mass percentage content of the inorganic fiber silicon dioxide is more than 83 percent, the content of calcium oxide is more than 3 percent, and the content of magnesium oxide is more than 1 percent.
Example 3
An inorganic fiber reinforced composite double-wall corrugated pipe: comprises the following raw materials in percentage by weight: 50% of chlorinated polyvinyl chloride, 1% of chlorinated polyethylene, 1% of ACR resin, 5% of inorganic fiber, 30% of light calcium carbonate, 3% of calcium-zinc stabilizer, 5% of stearic acid, 1% of paraffin and 1% of color master batch, wherein the inorganic fiber is prepared from the following components in percentage by mass: 0.5: 0.9 of a mixture of carbon fibers, white mud fibers and sepiolite fibers, wherein the light calcium carbonate is active light calcium carbonate with the granularity of 3000 meshes, the mass percentage content of the inorganic fiber silicon dioxide is more than 83 percent, the content of calcium oxide is more than 3 percent, and the content of magnesium oxide is more than 1 percent;
the inorganic fiber reinforced composite double-wall corrugated pipe of the above embodiments 1 to 3 uses the following preparation method:
s1, putting the chlorinated polyvinyl chloride, the chlorinated polyethylene, the ACR resin and the stearic acid into preheating equipment, preheating for 50min at 60 ℃, then putting the equipment into high-temperature mixing equipment, stirring for 5h at a high speed of 180 ℃ and at a stirring speed of 7000rpm, stopping stirring, and naturally cooling to 45 ℃ to prepare a mixed material A;
s2, according to 1: 5, stirring and soaking the modifier and the inorganic fiber material at 130 ℃ for 4 hours, and then putting the modified inorganic fiber into a jet mill to grind the inorganic fiber in an air flow of 7m3Grinding for 50min under the air pressure of 2Mpa, wherein the modifier is prepared from the following components in a mass ratio of 0.5: 1.1: 0.10: 0.8 of a mixture of aqueous polyvinyl alcohol, sucrose laurate, sucrose palmitate, polyglycerol monostearate;
s3, putting the mixed material A and the inorganic fiber material into a cold mixer, and stirring at 6 ℃ for 50min at 400rpm to obtain a mixed material B;
s4, adding the mixture B obtained in the step S3, light calcium carbonate, a calcium zinc stabilizer, paraffin and color master into a double-screw extruder for melt mixing, extruding and granulating, and cooling and forming to obtain the inorganic fiber reinforced composite double-wall corrugated pipe, wherein the extruding temperature of the machine barrel is 130 ℃, and the mold temperature is 180 ℃.
Example 4
The inorganic fiber reinforced composite double-wall corrugated pipe of the embodiment uses the percentage raw materials of the embodiment 3, and the preparation method comprises the following steps:
s1, putting the chlorinated polyvinyl chloride, the chlorinated polyethylene, the ACR resin and the stearic acid into preheating equipment, preheating for 30min at 50 ℃, then putting the materials into high-temperature mixing equipment, stirring for 3h at 150 ℃ and at the stirring speed of 6000rpm, stopping stirring, and naturally cooling to 40 ℃ to prepare a mixed material A;
s2, according to 1: 3, stirring and soaking the modifier and the inorganic fiber material at 90 ℃ for 2 hours, and then putting the modified inorganic fiber into a jet mill to grind the inorganic fiber in an air flow of 5m3Grinding for 30min under the air pressure of 1Mpa, wherein the modifier is prepared from the following components in a mass ratio of 0.3: 1: 0.09: 0.6 of a mixture of aqueous polyvinyl alcohol, sucrose laurate, sucrose palmitate, polyglycerol monostearate;
s3, putting the mixed material A and the inorganic fiber material into a cold mixer, and stirring at the temperature of minus 2 ℃ for 30min at 300rpm to obtain a mixed material B;
s4, adding the mixture B obtained in the step S3, light calcium carbonate, a calcium zinc stabilizer, paraffin and color master into a double-screw extruder for melt mixing, extruding and granulating, and cooling and forming to obtain the inorganic fiber reinforced composite double-wall corrugated pipe, wherein the extruding temperature of the machine barrel is 100 ℃, and the die temperature is 160 ℃.
Example 5
The inorganic fiber reinforced composite double-wall corrugated pipe of the embodiment uses the percentage raw materials of the embodiment 3, and the preparation method comprises the following steps:
s1, putting the chlorinated polyvinyl chloride, the chlorinated polyethylene, the ACR resin and the stearic acid into preheating equipment, preheating for 60min at the temperature of 80 ℃, then putting the materials into high-temperature mixing equipment, stirring for 6h at the high speed of 200 ℃ and the stirring speed of 8000rpm, stopping stirring, and naturally cooling to 50 ℃ to prepare a mixed material A;
s2, according to 1: 7, stirring and soaking the modifier and the inorganic fiber material at 150 ℃ for 5 hours, and then putting the modified inorganic fiber into a jet mill to grind the inorganic fiber in an air flow of 8m3Grinding for 80min under the air pressure of 3Mpa, wherein the modifier is prepared from the following components in a mass ratio of 0.6: 1.2: 0.12: 0.9 of a mixture of aqueous polyvinyl alcohol, sucrose laurate, sucrose palmitate, polyglycerol monostearate;
s3, putting the mixed material A and the inorganic fiber material into a cold mixer, and stirring at 10 ℃ for 60min at 500rpm to obtain a mixed material B;
s4, adding the mixture B obtained in the step S3, light calcium carbonate, a calcium zinc stabilizer, paraffin and color master into a double-screw extruder for melt mixing, extruding and granulating, and cooling and forming to obtain the inorganic fiber reinforced composite double-wall corrugated pipe, wherein the extruding temperature of the machine barrel is 150 ℃, and the mold temperature is 200 ℃.
Example 6
The difference between the present example and example 3 is that the mass ratio of the modifier to the inorganic fibers is 1: 10.
example 7
The difference between the embodiment and the embodiment 3 is that the modifier is a mixture of 0.5: 1.1: 0.10: 0.8 of a mixture of aqueous polyvinyl alcohol, cetyltrimethylammonium bromide, dodecyldimethylbetaine, polyglycerol monostearate.
Example 8
The difference between the embodiment and the embodiment 3 is that the modifier is a mixture of 0.2: 0.6: 0.15: 0.5 aqueous polyvinyl alcohol solution, sucrose laurate, sucrose palmitate, polyglycerol monostearate.
Example 9
The present example is different from example 3 in that the temperature of the cold mixer in the step S3 is 50 to 60 ℃.
Comparative example 1
The comparative example is different from example 3 in that the inorganic fiber reinforced composite double-wall corrugated pipe comprises the following raw materials in percentage by weight: 30% of chlorinated polyvinyl chloride, 2.6% of chlorinated polyethylene, 2.0% of ACR resin, 10% of inorganic fiber, 50% of light calcium carbonate, 0.6% of calcium-zinc stabilizer, 2% of stearic acid, 0.12% of paraffin and 3% of color master batch, wherein the inorganic fiber is prepared from the following components in percentage by mass: 0.5: 0.9 of a mixture of carbon fibers, white mud fibers, sepiolite fibers.
Comparative example 2
This comparative example differs from example 3 in that the inorganic fibers are carbon fibers.
Comparative example 3
The comparative example differs from example 3 in that the inorganic fibers are present in a mass ratio of 2: 0.5: 0.9 of a mixture of carbon fibers, boron fibers, ceramic fibers.
Comparative example 4
The comparative example differs from example 3 in that the inorganic fibers are in a mass ratio of 4: 0.2: 0.5 of a mixture of carbon fibers, white mud fibers, sepiolite fibers.
Comparative example 5
This comparative example differs from example 3 in that no ACR resin was added.
First, effect measurement
The corrugated pipes prepared in the examples 1 to 9 and the comparative examples 1 to 5 are compared with corrugated pipes on the market, the corrugated pipes with the same size are cut, the corrugated pipes with the length of 1 meter are soaked in saline-alkali solution, the pH value is more than 8.5, the corrugated pipes are fished out and cleaned after 90 days for comparison, and the test results are as follows:
Figure BDA0002469420600000061
Figure BDA0002469420600000071
Figure BDA0002469420600000081
the data show that the inorganic fiber reinforced composite double-wall corrugated pipe still keeps better mechanical property after being soaked in the high-east saline solution for a long time, the corrosion degree of the pipe body is smaller, and compared with comparative example 1, examples 1-9 show that the raw materials are scientifically proportioned and play a role in cooperation, so that the prepared corrugated pipe has better mechanical property, and compared with comparative examples 2, 3 and 4, the inorganic fiber and the proportion thereof selected by the invention play an important role in the raw materials of the corrugated pipe, the impact strength, the tensile strength and other properties of the corrugated pipe can be enhanced, and compared with comparative example 5, the mechanical property of the corrugated pipe is improved under the compounding effect of ACR resin with chlorinated polyvinyl chloride and chlorinated polyethylene; compared with examples 6, 7 and 8, the examples 1-5 show that inorganic fibers are modified by soaking and other treatment means in a scientific ratio under a specific modifier to obtain the modified inorganic fibers for preparing the corrugated pipe, and the elasticity, the corrosion resistance and the like of the corrugated pipe can be well enhanced; example 9 by contrast, it is seen that the temperature of the cold mixer is selected to provide good mixing of the inorganic fibres with the blend a by temperature during the treatment of the inorganic fibres.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. An inorganic fiber reinforced composite double-wall corrugated pipe is characterized in that: comprises the following raw materials in percentage by weight: 40-60% of chlorinated polyvinyl chloride, 0.3-1.5% of chlorinated polyethylene, 0.3-1.6% of ACR resin, 3-7% of inorganic fiber, 20-40% of light calcium carbonate, 1-6% of calcium zinc stabilizer, 3-8% of stearic acid, 0.1-2% of paraffin and 0.1-2% of color master batch, wherein the inorganic fiber is prepared from the following components in percentage by mass of 1-3: 0.3-0.8: 0.6 to 1.2 of a mixture of carbon fibers, white mud fibers and sepiolite fibers.
2. The inorganic fiber reinforced composite double wall corrugated pipe of claim 1, wherein: comprises the following raw materials in percentage by weight: 50% of chlorinated polyvinyl chloride, 1% of chlorinated polyethylene, 1% of ACR resin, 5% of inorganic fiber, 30% of light calcium carbonate, 3% of calcium-zinc stabilizer, 5% of stearic acid, 1% of paraffin and 1% of color master batch, wherein the inorganic fiber is prepared from the following components in percentage by mass: 0.5: 0.9 of a mixture of carbon fibers, white mud fibers, sepiolite fibers.
3. The inorganic fiber reinforced composite double wall corrugated pipe of claim 1, wherein: the light calcium carbonate is active light calcium carbonate, and the granularity is 3000 meshes.
4. The inorganic fiber reinforced composite double wall corrugated pipe of claim 1, wherein: the inorganic fiber contains more than 83 percent of silicon dioxide, more than 3 percent of calcium oxide and more than 1 percent of magnesium oxide by mass percent.
5. A preparation method of an inorganic fiber reinforced composite double-wall corrugated pipe is characterized by comprising the following steps: the method comprises the following steps:
s1, putting the chlorinated polyvinyl chloride, the chlorinated polyethylene, the ACR resin and the stearic acid into preheating equipment, preheating for 30-60 min at 50-80 ℃, then putting the materials into high-temperature mixing equipment, stirring at a high speed for 3-6 h, stopping stirring, and naturally cooling to 40-50 ℃ to prepare a mixed material A;
s2, according to 1: 3-7, stirring and soaking the modifier and the inorganic fiber material at 90-150 ℃ for 2-5 h, and then putting the modified inorganic fiber into a jet mill for grinding for 30-80 min;
s3, putting the mixed material A and the inorganic fiber material into a cold mixer, and stirring at the temperature of-2-10 ℃ for 30-60 min at 300-500 rpm to obtain a mixed material B;
and S4, adding the mixture B obtained in the step S3, light calcium carbonate, a calcium zinc stabilizer, paraffin and color master into a double-screw extruder for melt mixing, extruding and granulating, and cooling and forming to obtain the inorganic fiber reinforced composite double-wall corrugated pipe.
6. The method for preparing an inorganic fiber reinforced composite double-wall corrugated pipe according to claim 5, wherein the method comprises the following steps: the temperature of the high-temperature mixing equipment is 150-200 ℃.
7. The method for preparing an inorganic fiber reinforced composite double-wall corrugated pipe according to claim 5, wherein the method comprises the following steps: the stirring speed of the high-temperature mixing equipment is 6000-8000 rpm.
8. The method for preparing an inorganic fiber reinforced composite double-wall corrugated pipe according to claim 5, wherein the method comprises the following steps: the modifier is prepared from the following components in a mass ratio of 0.3-0.6: 1-1.2: 0.09-0.12: 0.6-0.9 of a mixture of polyvinyl alcohol aqueous solution, sucrose laurate, sucrose palmitate, and polyglycerol monostearate.
9. The method for preparing an inorganic fiber reinforced composite double-wall corrugated pipe according to claim 5, wherein the method comprises the following steps: the grinding gas flow in the jet mill is 5-8 m3Min, and the air pressure is 1-3 Mpa.
10. The method for preparing an inorganic fiber reinforced composite double-wall corrugated pipe according to claim 5, wherein the method comprises the following steps: the extrusion temperature of a machine barrel in the double-screw extruder is 100-150 ℃, and the temperature of a die is 160-200 ℃.
CN202010343861.5A 2020-04-27 2020-04-27 Inorganic fiber reinforced composite double-wall corrugated pipe and preparation method thereof Pending CN111363280A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1631968A (en) * 2004-11-26 2005-06-29 杭州波达塑业有限公司 Chlorinated polyvinyl chloride double-wall corrugated pipe formulation and its production process
CN104927264A (en) * 2015-06-18 2015-09-23 湖北金马塑业有限公司 Chlorinated polyvinyl chloride double-wall corrugated pipe
CN105802094A (en) * 2016-01-16 2016-07-27 福建和盛塑业有限公司 Modified chlorinated polyvinyl chloride cable protective double-layer corrugated pipe and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1631968A (en) * 2004-11-26 2005-06-29 杭州波达塑业有限公司 Chlorinated polyvinyl chloride double-wall corrugated pipe formulation and its production process
CN104927264A (en) * 2015-06-18 2015-09-23 湖北金马塑业有限公司 Chlorinated polyvinyl chloride double-wall corrugated pipe
CN105802094A (en) * 2016-01-16 2016-07-27 福建和盛塑业有限公司 Modified chlorinated polyvinyl chloride cable protective double-layer corrugated pipe and preparation method thereof

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