CN110951196A - Corrosion-resistant and high-temperature-resistant PVC-C pipe and preparation method thereof - Google Patents
Corrosion-resistant and high-temperature-resistant PVC-C pipe and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a corrosion-resistant high-temperature-resistant PVC-C pipe and a preparation method thereof, wherein the raw materials for preparing the corrosion-resistant high-temperature-resistant PVC-C pipe comprise the following components in parts by weight: 100 portions of chlorinated polyvinyl chloride, 4 to 12 portions of acrylonitrile-butadiene-styrene copolymer, 12 to 20 portions of modified filling material, 0.2 to 1.2 portions of carbon black, 1.5 to 6.5 portions of silicon dioxide, 0.5 to 2.5 portions of stearic acid, 1 to 5 portions of dioctyl adipate, 2.8 to 8.5 portions of stable system and 0.8 to 2.6 portions of antioxidant. The corrosion-resistant and high-temperature-resistant PVC-C pipe prepared by the invention has the advantages of high Vicat softening temperature, excellent heat aging resistance and strong corrosion resistance, can be widely applied to the field with higher comprehensive requirements, has simple and easy preparation process, and is suitable for industrial production.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a corrosion-resistant high-temperature-resistant PVC-C pipe and a preparation method thereof.
Background
PVC-C is also called chlorinated polyvinyl chloride (CPVC), is prepared by chlorination modification of polyvinyl chloride resin, is a novel engineering plastic, and after chlorination, the irregularity of molecular bonds of the PVC resin is increased, the polarity is increased, so that the solubility of the resin is increased, the chemical stability is increased, the heat resistance, the corrosion resistance of acid, alkali, salt, oxidant and the like of the material are improved, and the mechanical property of the thermal deformation temperature of the resin is improved. The CPVC is mainly used for producing plates, bars and pipes to convey hot water and corrosive media, and along with the rapid development of the industry, the corrosion resistance and the high temperature resistance of the existing CPVC pipes can not meet the requirements of the market more and more. Therefore, a PVC-C pipe with excellent corrosion resistance and high temperature resistance and a preparation method thereof are needed.
Chinese patent CN103897298A discloses a corrosion-resistant, wear-resistant and anti-aging modified PVC plastic composition, which comprises the following components in percentage by weight: 90-110g of polyvinyl chloride resin, 25-30g of dioctyl phthalate, 20-25g of dibutyl phthalate, 0.5-2g of barium stearate, 0.1-0.5g of paraffin, 0.5-1g of cadmium stearate, 0.1-0.5g of hindered amine light stabilizer, 65-80g of ATO nano powder, 8-10g of modifier and 8-10g of composite dispersion modifier. However, the plastic composition prepared in this patent has poor high temperature resistance.
Chinese patent CN110240773A discloses a high-performance chlorinated polyvinyl chloride plastic and a preparation method thereof, wherein the high-performance chlorinated polyvinyl chloride plastic comprises the following raw materials: chlorinated polyvinyl chloride, farnesene-vinyl chloride polymer, a heat stabilizer, a plasticizer, an antioxidant, a lubricant and a compound filler; the compound filler is carbon black, silicon dioxide and manganese dioxide according to the weight ratio of (10-20): (20-40): (1-5) matching; the amount of the farnesene-vinyl chloride polymer is 5-15% of the total mass of the chlorinated polyvinyl chloride and the polyvinyl chloride. However, the chlorinated polyvinyl chloride plastic prepared by the patent has poor corrosion resistance.
Disclosure of Invention
Aiming at the problems, the invention provides a corrosion-resistant high-temperature-resistant PVC-C pipe and a preparation method thereof.
The technical scheme adopted by the invention for solving the problems is as follows: the corrosion-resistant high-temperature-resistant PVC-C pipe comprises the following raw materials in parts by weight: 100 portions of chlorinated polyvinyl chloride, 4 to 12 portions of acrylonitrile-butadiene-styrene copolymer, 12 to 20 portions of modified filler, 0.2 to 1.2 portions of carbon black, 1.5 to 6.5 portions of silicon dioxide, 0.5 to 2.5 portions of stearic acid, 1 to 5 portions of dioctyl adipate, 2.8 to 8.5 portions of stable system and 0.8 to 2.6 portions of antioxidant; the stabilizing system is selected from at least two of calcium ricinoleate/zinc laurate stabilizer, organic tin stabilizer, epoxidized soybean oil and hydrotalcite.
Further, the antioxidant is the mixture of triisodecyl phosphite and antioxidant 300 in a weight ratio of 1: 2-8.
Further, the stabilizing system is formed by mixing a calcium ricinoleate/zinc laurate stabilizing agent, an organic tin stabilizing agent and epoxidized soybean oil in a weight ratio of 1: 0.5-2.5: 1.2.
The calcium ricinoleate/zinc laurate stabilizer and the organic tin stabilizer are used in a combined manner, so that the defect caused by using a single stabilizer is overcome, the organic tin stabilizer can make up the problem of poor plasticization of the calcium ricinoleate/zinc laurate stabilizer, the defect of poor lubricity of the composite heat stabilizer can be made up by the calcium zinc stabilizer, and the calcium ricinoleate/zinc laurate stabilizer and the organic tin stabilizer have good synergistic effect; the epoxidized soybean oil is used as a synergist, not only can play a role of a plasticizer, but also can greatly improve the thermal stability effect of the system; wherein the epoxy value of the epoxidized soybean oil is more than 6 percent.
Further, the preparation method of the modified filler comprises the following steps:
a, mixing 10 parts of inorganic calcium carbonate, 0.8-2.5 parts of calcium carbonate whiskers, 0.5-1.5 parts of carbon fibers and 0.5-1.6 parts of silicon carbide, and drying in an oven at the temperature of 95-105 ℃ for 20 minutes to obtain a mixed material;
b, adding 1.5-3.5 parts of polyvinyl chloride resin powder and 0.1-0.8 part of titanate coupling agent into the mixed material, grinding at high speed for 10-20 minutes, and sieving with a 200-mesh sieve to obtain the modified filler.
The filler is selected from inorganic calcium carbonate, is compounded with calcium carbonate whiskers, carbon fibers and silicon carbide, can enhance the strength and corrosion resistance of the pipe, and is subjected to modification treatment, so that the inorganic filler is uniformly dispersed in a chlorinated polyvinyl chloride matrix, and the heat resistance and the mechanical strength of the pipe are greatly improved.
Further, in the step a, the fiber length of the carbon fiber is 50 to 80 micrometers.
Furthermore, in the step b, the speed of ball milling is 600 r/min-750 r/min.
Further, the raw materials for preparing the corrosion-resistant and high-temperature-resistant PVC-C pipe comprise the following components in parts by weight: 100 parts of chlorinated polyvinyl chloride, 8 parts of acrylonitrile-butadiene-styrene copolymer, 16 parts of modified filler, 0.7 part of carbon black, 4 parts of silicon dioxide, 1.5 parts of stearic acid, 3 parts of dioctyl adipate, 5.6 parts of a stabilizing system and 1.7 parts of antioxidant.
The invention also aims to provide a preparation method of the corrosion-resistant high-temperature-resistant PVC-C pipe, which comprises the following steps:
step S10, weighing the raw materials for preparing the corrosion-resistant and high-temperature-resistant PVC-C pipe according to the parts by weight;
step S20, adding the chlorinated polyvinyl chloride, the stabilizing system, the acrylonitrile-butadiene-styrene copolymer, the carbon black and the silicon dioxide in parts by weight into a high-speed mixer, and mixing at the rotating speed of 1000-1300 rpm for 20-30 minutes to obtain a premix;
step S30, adding the dioctyl adipate, the modified filler, the antioxidant and the stearic acid in parts by weight into the premix obtained in the step S20, continuously mixing for 15 minutes, and banburying in a banbury mixer for 5 minutes;
and S40, feeding the material obtained in the step S30 into a double-screw extruder, and extruding and granulating to obtain the corrosion-resistant and high-temperature-resistant PVC-C pipe.
Further, in step S40, the extrusion temperature for extrusion granulation is 170 to 200 ℃.
The invention has the advantages that:
(1) the chlorinated polyvinyl chloride pipe is made of the chlorinated polyvinyl chloride as a main material, so that the chlorinated polyvinyl chloride pipe has certain corrosion resistance and heat resistance, the processing and forming effect of the chlorinated polyvinyl chloride pipe can be improved by adding a small amount of acrylonitrile-butadiene-styrene copolymer, the surface of a product is smooth, and the chlorinated polyvinyl chloride pipe and the product are combined for use, so that the pipe has better chemical stability and acid, alkali and salt corrosion resistance;
(2) the modified filler is added into the prepared corrosion-resistant high-temperature-resistant PVC-C pipe, so that the inorganic filler is uniformly dispersed in a chlorinated polyvinyl chloride matrix, the heat resistance and the mechanical strength of the pipe are greatly improved, and a stabilizing system is added in a matching manner, so that the thermal stability of the pipe is improved, the forming effect of chlorinated polyvinyl chloride can be improved, and the plasticizing effect is achieved;
(3) the corrosion-resistant and high-temperature-resistant PVC-C pipe prepared by the invention has the advantages of high Vicat softening temperature, excellent heat aging resistance and strong corrosion resistance, can be widely applied to the field with higher comprehensive requirements, has simple and easy preparation process, and is suitable for industrial production.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention is described in further detail below.
Detailed Description
The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims.
The formulations of examples 1-5 and comparative examples of a rapidly formed PVC-U pipe of the invention are shown in Table 1:
TABLE 1
Example 1
A corrosion-resistant high-temperature-resistant PVC-C pipe is prepared by the following steps:
step S10, weighing the raw materials for preparing the corrosion-resistant and high-temperature-resistant PVC-C pipe according to the weight parts, wherein the antioxidant is triisodecyl phosphite and antioxidant 300 which are mixed in a weight ratio of 1:5, and the stabilizing system is a mixture of calcium ricinoleate/zinc laurate stabilizer, organic tin stabilizer and epoxidized soybean oil in a weight ratio of 1:1.5: 1.2;
step S20, adding the chlorinated polyvinyl chloride, the stabilizing system, the acrylonitrile-butadiene-styrene copolymer, the carbon black and the silicon dioxide in parts by weight into a high-speed mixer, and mixing for 30 minutes at the rotating speed of 1200 revolutions per minute to obtain a premix;
step S30, adding the dioctyl adipate, the modified filler, the antioxidant and the stearic acid in parts by weight into the premix obtained in the step S20, continuously mixing for 15 minutes, and banburying in a banbury mixer for 5 minutes;
step S40, feeding the material obtained in the step S30 into a double-screw extruder, and extruding and granulating at 185 ℃ to obtain the corrosion-resistant and high-temperature-resistant PVC-C pipe;
the modified filler is prepared by the following steps:
mixing 10 parts of inorganic calcium carbonate, 1.5 parts of calcium carbonate whiskers, 1.0 part of carbon fibers and 1.0 part of silicon carbide, and drying in a drying oven at 100 ℃ for 20 minutes to obtain a mixed material, wherein the fiber length of the carbon fibers is 50-80 micrometers;
and b, adding 2.5 parts of polyvinyl chloride resin powder and 0.4 part of titanate coupling agent into the mixed material, grinding at a high speed of 650r/min for 15 minutes, and sieving by a 200-mesh sieve to obtain the modified filler.
Example 2
A corrosion-resistant high-temperature-resistant PVC-C pipe is prepared by the following steps:
step S10, weighing the raw materials for preparing the corrosion-resistant and high-temperature-resistant PVC-C pipe according to the weight parts, wherein the antioxidant in the raw materials is the mixture of triisodecyl phosphite and antioxidant 300 in a weight ratio of 1:2, and the stabilizing system is the mixture of calcium ricinoleate/zinc laurate stabilizer, organic tin stabilizer and epoxidized soybean oil in a weight ratio of 1:0.5: 1.2;
step S20, adding the chlorinated polyvinyl chloride, the stabilizing system, the acrylonitrile-butadiene-styrene copolymer, the carbon black and the silicon dioxide in parts by weight into a high-speed mixer, and mixing at the rotating speed of 1300 revolutions per minute for 20 minutes to obtain a premix;
step S30, adding the dioctyl adipate, the modified filler, the antioxidant and the stearic acid in parts by weight into the premix obtained in the step S20, continuously mixing for 15 minutes, and banburying in a banbury mixer for 5 minutes;
step S40, feeding the material obtained in the step S30 into a double-screw extruder, and extruding and granulating at 200 ℃ to obtain the corrosion-resistant and high-temperature-resistant PVC-C pipe;
the modified filler is prepared by the following steps:
mixing 10 parts of inorganic calcium carbonate, 2.5 parts of calcium carbonate whiskers, 1.0 part of carbon fibers and 1.2 parts of silicon carbide, and drying in a drying oven at 100 ℃ for 20 minutes to obtain a mixed material, wherein the fiber length of the carbon fibers is 50-80 micrometers;
and b, adding 3.0 parts of polyvinyl chloride resin powder and 0.6 part of titanate coupling agent into the mixed material, grinding at a high speed of 750r/min for 10 minutes, and sieving by a 200-mesh sieve to obtain the modified filler.
Example 3
A corrosion-resistant high-temperature-resistant PVC-C pipe is prepared by the following steps:
step S10, weighing the raw materials for preparing the corrosion-resistant and high-temperature-resistant PVC-C pipe according to the weight parts, wherein the antioxidant in the raw materials is triisodecyl phosphite and antioxidant 300 which are mixed in a weight ratio of 1:8, and the stabilizing system is a calcium ricinoleate/zinc laurate stabilizer, an organic tin stabilizer and epoxidized soybean oil which are mixed in a weight ratio of 1:2.5: 1.2;
step S20, adding the chlorinated polyvinyl chloride, the stabilizing system, the acrylonitrile-butadiene-styrene copolymer, the carbon black and the silicon dioxide in parts by weight into a high-speed mixer, and mixing at the rotating speed of 1000 revolutions per minute for 20 to 30 minutes to obtain a premix;
step S30, adding the dioctyl adipate, the modified filler, the antioxidant and the stearic acid in parts by weight into the premix obtained in the step S20, continuously mixing for 15 minutes, and banburying in a banbury mixer for 5 minutes;
step S40, feeding the material obtained in the step S30 into a double-screw extruder, and extruding and granulating at 170 ℃ to obtain the corrosion-resistant and high-temperature-resistant PVC-C pipe;
the modified filler is prepared by the following steps:
mixing 10 parts of inorganic calcium carbonate, 2.0 parts of calcium carbonate whiskers, 0.5 part of carbon fibers and 0.8 part of silicon carbide, and drying in a drying oven at 105 ℃ for 20 minutes to obtain a mixed material, wherein the fiber length of the carbon fibers is 50-80 micrometers;
and b, adding 2.0 parts of polyvinyl chloride resin powder and 0.1 part of titanate coupling agent into the mixed material, grinding at a high speed of 600r/min for 15 minutes, and sieving by a 200-mesh sieve to obtain the modified filler.
Example 4
A corrosion-resistant high-temperature-resistant PVC-C pipe is prepared by the following steps:
step S10, weighing the raw materials for preparing the corrosion-resistant and high-temperature-resistant PVC-C pipe material according to the weight parts, wherein the antioxidant in the raw materials is the mixture of triisodecyl phosphite and an antioxidant 300 in a weight ratio of 1:6, and the stabilizing system is the mixture of a calcium ricinoleate/zinc laurate stabilizer, an organic tin stabilizer, epoxidized soybean oil and hydrotalcite in a weight ratio of 1:1.5:1.2: 1;
step S20, adding the chlorinated polyvinyl chloride, the stabilizing system, the acrylonitrile-butadiene-styrene copolymer, the carbon black and the silicon dioxide in parts by weight into a high-speed mixer, and mixing at the rotating speed of 1100 r/min for 25 minutes to obtain a premix;
step S30, adding the dioctyl adipate, the modified filler, the antioxidant and the stearic acid in parts by weight into the premix obtained in the step S20, continuously mixing for 15 minutes, and banburying in a banbury mixer for 5 minutes;
step S40, feeding the material obtained in the step S30 into a double-screw extruder, and extruding and granulating at 180 ℃ to obtain the corrosion-resistant and high-temperature-resistant PVC-C pipe;
the modified filler is prepared by the following steps:
mixing 10 parts of inorganic calcium carbonate, 1.0 part of calcium carbonate whisker, 1.5 parts of carbon fiber and 0.5 part of silicon carbide, and drying in a drying oven at 100 ℃ for 20 minutes to obtain a mixed material, wherein the fiber length of the carbon fiber is 50-80 microns;
and b, adding 1.5 parts of polyvinyl chloride resin powder and 0.8 part of titanate coupling agent into the mixed material, grinding at a high speed of 650r/min for 20 minutes, and sieving by a 200-mesh sieve to obtain the modified filler.
Example 5
A corrosion-resistant high-temperature-resistant PVC-C pipe is prepared by the following steps:
step S10, weighing the raw materials for preparing the corrosion-resistant and high-temperature-resistant PVC-C pipe according to the weight parts, wherein the antioxidant in the raw materials is triisodecyl phosphite and antioxidant 300 which are mixed according to the weight ratio of 1:4, and the stabilizing system is calcium ricinoleate/zinc laurate stabilizer and organic tin stabilizer which are mixed according to the weight ratio of 1: 1.5;
step S20, adding the chlorinated polyvinyl chloride, the stabilizing system, the acrylonitrile-butadiene-styrene copolymer, the carbon black and the silicon dioxide in parts by weight into a high-speed mixer, and mixing for 30 minutes at the rotating speed of 1200 revolutions per minute to obtain a premix;
step S30, adding the dioctyl adipate, the modified filler, the antioxidant and the stearic acid in parts by weight into the premix obtained in the step S20, continuously mixing for 15 minutes, and banburying in a banbury mixer for 5 minutes;
step S40, feeding the material obtained in the step S30 into a double-screw extruder, and extruding and granulating at 190 ℃ to obtain the corrosion-resistant and high-temperature-resistant PVC-C pipe;
the modified filler is prepared by the following steps:
mixing 10 parts of inorganic calcium carbonate, 0.8 part of calcium carbonate whisker, 1.0 part of carbon fiber and 1.6 parts of silicon carbide, and drying in a 95 ℃ oven for 20 minutes to obtain a mixed material, wherein the fiber length of the carbon fiber is 50-80 microns;
and b, adding 3.5 parts of polyvinyl chloride resin powder and 0.2 part of titanate coupling agent into the mixed material, grinding at a high speed of 700r/min for 10 minutes, and sieving by a 200-mesh sieve to obtain the modified filler.
Comparative example 1
A corrosion-resistant high-temperature-resistant PVC-C pipe is prepared by the following steps:
step S10, weighing the raw materials for preparing the corrosion-resistant and high-temperature-resistant PVC-C pipe according to the weight parts, wherein the antioxidant in the raw materials is triisodecyl phosphite and antioxidant 300 which are mixed according to the weight ratio of 1:4, and the stabilizing system is calcium ricinoleate/zinc laurate stabilizer and organic tin stabilizer which are mixed according to the weight ratio of 1: 1.5;
step S20, adding the chlorinated polyvinyl chloride, the stabilizing system, the acrylonitrile-butadiene-styrene copolymer, the carbon black and the silicon dioxide in parts by weight into a high-speed mixer, and mixing for 30 minutes at the rotating speed of 1200 revolutions per minute to obtain a premix;
step S30, adding the dioctyl adipate, the inorganic calcium carbonate, the antioxidant and the stearic acid in parts by weight into the premix obtained in the step S20, continuously mixing for 15 minutes, and banburying in a banbury mixer for 5 minutes;
and S40, conveying the material obtained in the step S30 to a double-screw extruder, and extruding and granulating at 190 ℃ to obtain the corrosion-resistant and high-temperature-resistant PVC-C pipe.
Comparative example 2
A corrosion-resistant high-temperature-resistant PVC-C pipe is prepared by the following steps:
step S10, weighing the raw materials for preparing the corrosion-resistant and high-temperature-resistant PVC-C pipe according to the weight parts, wherein the antioxidant in the raw materials is triisodecyl phosphite and antioxidant 300 which are mixed according to the weight ratio of 1:4, and the stabilizing system is calcium ricinoleate/zinc laurate stabilizer and organic tin stabilizer which are mixed according to the weight ratio of 1: 1.5;
step S20, adding the chlorinated polyvinyl chloride, the stabilizing system, the acrylonitrile-butadiene-styrene copolymer, the carbon black and the silicon dioxide in parts by weight into a high-speed mixer, and mixing for 30 minutes at the rotating speed of 1200 revolutions per minute to obtain a premix;
step S30, adding the dioctyl adipate, the filling material, the antioxidant and the stearic acid in parts by weight into the premix obtained in the step S20, continuously mixing for 15 minutes, and banburying in a banbury mixer for 5 minutes, wherein the modified filling material comprises 10 parts of inorganic calcium carbonate, 0.8 part of calcium carbonate whisker, 1.0 part of carbon fiber, 1.6 parts of silicon carbide, 3.5 parts of polyvinyl chloride resin powder and 0.2 part of titanate coupling agent;
and S40, conveying the material obtained in the step S30 to a double-screw extruder, and extruding and granulating at 190 ℃ to obtain the corrosion-resistant and high-temperature-resistant PVC-C pipe.
Examples of the experiments
To further illustrate the technological advancement of the present invention, experiments are now taken to further illustrate it.
The experimental method comprises the following steps: the corrosion-resistant and high-temperature-resistant PVC-C pipe prepared by the invention is subjected to performance detection, and the result is shown in Table 2.
Table 2. Performance detection of corrosion-resistant and high-temperature-resistant PVC-C pipe prepared by the invention
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The corrosion-resistant high-temperature-resistant PVC-C pipe is characterized in that the raw materials for preparing the corrosion-resistant high-temperature-resistant PVC-C pipe comprise the following components in parts by weight: 100 portions of chlorinated polyvinyl chloride, 4 to 12 portions of acrylonitrile-butadiene-styrene copolymer, 12 to 20 portions of modified filler, 0.2 to 1.2 portions of carbon black, 1.5 to 6.5 portions of silicon dioxide, 0.5 to 2.5 portions of stearic acid, 1 to 5 portions of dioctyl adipate, 2.8 to 8.5 portions of stable system and 0.8 to 2.6 portions of antioxidant; the stabilizing system is selected from at least two of calcium ricinoleate/zinc laurate stabilizers, organic tin stabilizers, epoxidized soybean oil and hydrotalcite.
2. The corrosion-resistant high-temperature-resistant PVC-C pipe material as recited in claim 1, wherein the antioxidant is a mixture of triisodecyl phosphite and antioxidant 300 in a weight ratio of 1: 2-8.
3. The corrosion-resistant high-temperature-resistant PVC-C pipe material according to claim 1, wherein the stabilizing system is a mixture of a calcium ricinoleate/zinc laurate stabilizer, an organotin stabilizer and epoxidized soybean oil in a weight ratio of 1: 0.5-2.5: 1.2.
4. The corrosion-resistant high-temperature-resistant PVC-C pipe material as recited in claim 1, wherein the modified filler is prepared by the following steps:
a, mixing 10 parts of inorganic calcium carbonate, 0.8-2.5 parts of calcium carbonate whiskers, 0.5-1.5 parts of carbon fibers and 0.5-1.6 parts of silicon carbide, and drying in an oven at the temperature of 95-105 ℃ for 20 minutes to obtain a mixed material;
b, adding 1.5-3.5 parts of polyvinyl chloride resin powder and 0.1-0.8 part of titanate coupling agent into the mixed material, grinding at high speed for 10-20 minutes, and sieving with a 200-mesh sieve to obtain the modified filler.
5. The corrosion-resistant high-temperature-resistant PVC-C pipe according to claim 4, wherein in step a, the fiber length of the carbon fiber is 50-80 microns.
6. The corrosion-resistant high-temperature-resistant PVC-C pipe material according to claim 4, wherein in the step b, the ball milling speed is 600r/min to 750 r/min.
7. The corrosion-resistant high-temperature-resistant PVC-C pipe according to claim 1, wherein the raw materials for preparing the corrosion-resistant high-temperature-resistant PVC-C pipe comprise, by weight: 100 parts of chlorinated polyvinyl chloride, 8 parts of acrylonitrile-butadiene-styrene copolymer, 16 parts of modified filler, 0.7 part of carbon black, 4 parts of silicon dioxide, 1.5 parts of stearic acid, 3 parts of dioctyl adipate, 5.6 parts of a stabilizing system and 1.7 parts of antioxidant.
8. A preparation method of the corrosion-resistant high-temperature-resistant PVC-C pipe material according to any one of claims 1-7, characterized by comprising the following steps:
step S10, weighing the raw materials for preparing the corrosion-resistant and high-temperature-resistant PVC-C pipe according to the weight parts;
step S20, adding the chlorinated polyvinyl chloride, the stabilizing system, the acrylonitrile-butadiene-styrene copolymer, the carbon black and the silicon dioxide in parts by weight into a high-speed mixer, and mixing at the rotating speed of 1000-1300 rpm for 20-30 minutes to obtain a premix;
step S30, adding the dioctyl adipate, the modified filler, the antioxidant and the stearic acid in parts by weight into the premix obtained in the step S20, continuously mixing for 15 minutes, and banburying in a banbury mixer for 5 minutes;
and S40, feeding the material obtained in the step S30 into a double-screw extruder, and extruding and granulating to obtain the corrosion-resistant and high-temperature-resistant PVC-C pipe.
9. The method according to claim 8, wherein the extrusion temperature of the extrusion granulation in step S40 is 170 ℃ to 200 ℃.
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| CN114854154A (en) * | 2022-03-29 | 2022-08-05 | 华亚工业塑胶（太仓）有限公司 | CPVC (chlorinated polyvinyl chloride) composition with high thermal stability and preparation method thereof |
| CN115895151A (en) * | 2022-11-22 | 2023-04-04 | 天龙伟业线缆有限公司 | Environment-friendly high-low temperature resistant polyvinyl chloride cable pipe material |
| CN116874953A (en) * | 2023-07-31 | 2023-10-13 | 揭阳市华瑞工贸有限公司 | High-temperature-resistant corrosion-resistant PVC material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114854154A (en) * | 2022-03-29 | 2022-08-05 | 华亚工业塑胶（太仓）有限公司 | CPVC (chlorinated polyvinyl chloride) composition with high thermal stability and preparation method thereof |
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| CN115895151B (en) * | 2022-11-22 | 2024-04-12 | 天龙伟业线缆有限公司 | Environment-friendly high-low temperature-resistant polyvinyl chloride cable tube material |
| CN116874953A (en) * | 2023-07-31 | 2023-10-13 | 揭阳市华瑞工贸有限公司 | High-temperature-resistant corrosion-resistant PVC material |
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