CN113943468A - Flame-retardant CPVC cable protection pipe - Google Patents
Flame-retardant CPVC cable protection pipe Download PDFInfo
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- CN113943468A CN113943468A CN202111331444.XA CN202111331444A CN113943468A CN 113943468 A CN113943468 A CN 113943468A CN 202111331444 A CN202111331444 A CN 202111331444A CN 113943468 A CN113943468 A CN 113943468A
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- 239000004801 Chlorinated PVC Substances 0.000 title claims abstract description 56
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 title claims abstract description 56
- 239000003063 flame retardant Substances 0.000 title claims abstract description 31
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 66
- 229920005989 resin Polymers 0.000 claims abstract description 66
- 239000004609 Impact Modifier Substances 0.000 claims abstract description 50
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 47
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 42
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 29
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 26
- 239000006084 composite stabilizer Substances 0.000 claims abstract description 26
- 239000000919 ceramic Substances 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 24
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 24
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 22
- 239000012188 paraffin wax Substances 0.000 claims abstract description 22
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 22
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 22
- 239000001993 wax Substances 0.000 claims abstract description 22
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 21
- 238000005303 weighing Methods 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 10
- 239000004945 silicone rubber Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004898 kneading Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- 238000011221 initial treatment Methods 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- LIAWCKFOFPPVGF-UHFFFAOYSA-N 2-ethyladamantane Chemical compound C1C(C2)CC3CC1C(CC)C2C3 LIAWCKFOFPPVGF-UHFFFAOYSA-N 0.000 claims description 3
- -1 3, 5-di-tert-butyl-4-hydroxyphenyl Chemical group 0.000 claims description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 3
- GTVWRXDRKAHEAD-UHFFFAOYSA-N Tris(2-ethylhexyl) phosphate Chemical compound CCCCC(CC)COP(=O)(OCC(CC)CCCC)OCC(CC)CCCC GTVWRXDRKAHEAD-UHFFFAOYSA-N 0.000 claims description 3
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000011282 treatment Methods 0.000 claims description 3
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 12
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 1
Classifications
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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
- 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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of CPVC cable protection pipes, in particular to a flame-retardant CPVC cable protection pipe which is prepared from the following raw materials in parts by mass: 36-38 parts of PVC resin, 80-83 parts of CPVC resin, 10-14 parts of light calcium carbonate, 10-12 parts of silicon rubber, 8-10 parts of ceramic powder, 6-8 parts of anti-aging agent, 6-8 parts of antioxidant, 4-6 parts of heat-resistant agent, 8.1-8.5 parts of composite stabilizer, 3.5-3.8 parts of ACR impact modifier, 3.5-4.5 parts of CPE impact modifier, 0.35-0.65 part of PE wax, 7-11 parts of MBS resin and 0.55-0.75 part of paraffin The antioxidant, the heat-resistant agent and the composite stabilizer respectively improve the oxidation resistance, the heat resistance and the stability of the pipeline.
Description
Technical Field
The invention relates to the technical field of CPVC cable protection pipes, in particular to a flame-retardant CPVC cable protection pipe.
Background
With the sudden and violent advance of national economic development and the gradual update of urban construction, the power cable enters the ground from overhead, the CPVC cable protection pipe has the characteristics of high strength, good flexibility, high temperature resistance, high pressure resistance, corrosion resistance, flame retardance, good insulating property, no pollution, difficult aging, light weight and the like, and can also prevent the influence of expansion with heat and contraction with cold. By adopting flaring and socket joint, the outer side of the pipe does not need to be reinforced by other materials during construction, so that the construction section by section is realized, the labor is saved, and the construction is convenient and quick. The CPVC cable protection pipe replaces the defects of poor ring stiffness, heat resistance, flame retardance and ring stiffness of the traditional UPVC double-wall corrugated pipe, is a necessary trend for future development, and although the existing CPVC cable protection pipe has higher compressive strength, the performance of high temperature resistance, corrosion resistance, flame retardance and the like can not meet the working requirement.
In summary, the present invention solves the existing problems by designing a flame retardant CPVC cable protection tube.
Disclosure of Invention
The invention aims to provide a flame-retardant CPVC cable protection pipe to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the flame-retardant CPVC cable protection pipe is prepared from the following raw materials in parts by mass: 36-38 parts of PVC resin, 80-83 parts of CPVC resin, 10-14 parts of light calcium carbonate, 10-12 parts of silicon rubber, 8-10 parts of ceramic powder, 6-8 parts of anti-aging agent, 6-8 parts of antioxidant, 4-6 parts of heat-resistant agent, 8.1-8.5 parts of composite stabilizer, 3.5-3.8 parts of ACR impact modifier, 3.5-4.5 parts of CPE impact modifier, 0.35-0.65 part of PE wax, 7-11 parts of MBS resin and 0.55-0.75 part of paraffin.
A preparation method of a flame-retardant CPVC cable protection pipe specifically comprises the following steps:
s1, respectively weighing 36-38 parts of PVC resin, 80-83 parts of CPVC resin, 10-14 parts of light calcium carbonate, 10-12 parts of silicone rubber, 8-10 parts of ceramic powder, 0.35-0.65 part of PE wax, 7-11 parts of MBS resin and 0.55-0.75 part of paraffin according to parts by weight, and respectively feeding the components into an industrial nano-grade grinding machine for grinding to obtain a nano-grade mixture A;
s2, weighing 6-8 parts of anti-aging agent, 6-8 parts of antioxidant, 4-6 parts of heat-resistant agent, 8.1-8.5 parts of composite stabilizer, 3.5-3.8 parts of ACR impact modifier and 3.5-4.5 parts of CPE impact modifier in sequence according to the parts by weight, simultaneously sending the nano-scale mixture A in S1 into a reaction kettle, sealing, and performing primary treatment on the material after sealing to form a fused mixed material B;
and S3, adding the fused mixed material B into a vacuum kneader, kneading the mixture at the temperature of 100-110 ℃ for 1.5-2 h, feeding the kneaded mixture into a double-screw extruder for extrusion granulation, feeding the obtained raw material particles into a hopper by using a vacuum feeding machine, heating and plasticizing the mixture by using a charging barrel and a die, extruding the mixture by using the die, and cooling and shaping the mixture to obtain the flame-retardant CPVC cable protection tube.
As a preferable scheme of the invention, the preliminary treatment in S2 comprises the specific steps of nitrogen replacement for 4-5 times, heating to 75-80 ℃, and uniformly stirring at a rotating speed of 600-800 r/min for 2-2.5 h.
According to the preferable scheme of the invention, in the S3, the temperature of the material cylinder is 170-180 ℃, the temperature of the die is 185-190 ℃, the temperature of a first area of a die cylinder of the double-screw extruder is 200-215 ℃, the temperature of a second area of the die cylinder is 200-205 ℃, the temperature of a third area of the die cylinder is 190-195 ℃, the temperature of a fourth area of the die cylinder is 180-185 ℃, the temperature of a fifth area of the die cylinder is 180-185 ℃, the temperature of a first area of a neck ring die is 200-205 ℃, the temperature of a second area of the neck ring die is 190-195 ℃, the temperature of a third area of the neck ring die is 180-185 ℃, the rotating speed of the screw is 450-500 r/min, and the melt pressure is controlled at 1.2-1.5 MPa.
As a preferred embodiment of the present invention, the flame retardant includes, but is not limited to: tributyl phosphate, tris (2-ethylhexyl) phosphate, or cresyl-diphenyl phosphate, antioxidants including, but not limited to: pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
In a preferred embodiment of the present invention, 36 parts by weight of PVC resin, 81 parts by weight of CPVC resin, 11 parts by weight of light calcium carbonate, 12 parts by weight of silicone rubber, 10 parts by weight of ceramic powder, 0.45 part by weight of PE wax, 8 parts by weight of MBS resin and 0.65 part by weight of paraffin are weighed in S1, and 6 parts by weight of anti-aging agent, 6 parts by weight of antioxidant, 5 parts by weight of heat resistant agent, 8.2 parts by weight of composite stabilizer, 3.5 parts by weight of ACR impact modifier and 3.6 parts by weight of CPE impact modifier are weighed in S2.
In a preferred embodiment of the present invention, 37 parts by weight of PVC resin, 81 parts by weight of CPVC resin, 12 parts by weight of light calcium carbonate, 10 parts by weight of silicone rubber, 8 parts by weight of ceramic powder, 0.45 part by weight of PE wax, 8 parts by weight of MBS resin, and 0.65 part by weight of paraffin wax are weighed in S1, and 7 parts by weight of anti-aging agent, 7 parts by weight of antioxidant, 5 parts by weight of heat resistant agent, 8.2 parts by weight of composite stabilizer, 3.6 parts by weight of ACR impact modifier, and 4 parts by weight of CPE impact modifier are weighed in S2.
In a preferred embodiment of the present invention, in S1, 38 parts by weight of PVC resin, 83 parts by weight of CPVC resin, 14 parts by weight of light calcium carbonate, 11 parts by weight of silicone rubber, 9 parts by weight of ceramic powder, 0.45 part by weight of PE wax, 8 parts by weight of MBS resin and 0.65 part by weight of paraffin wax are weighed, and in S2, 8 parts by weight of age resister, 8 parts by weight of antioxidant, 6 parts by weight of heat resistant agent, 8.5 parts by weight of composite stabilizer, 3.8 parts by weight of ACR impact modifier and 4.5 parts by weight of CPE impact modifier are weighed.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the flame-retardant CPVC cable protection pipe is prepared by design, wherein the PVC resin and the CPVC resin are used as main materials, the light calcium carbonate, silicon rubber, ceramic powder, PE wax, MBS resin and paraffin are used as auxiliary materials, and an anti-aging agent, an antioxidant, a heat-resistant agent, a composite stabilizer, an ACR impact modifier and a CPE impact modifier are added in the manufacturing process to modify the same, wherein the interaction between the silicon rubber and the ceramic powder is used for reducing the thermal contact resistance generated between the surface of the heat source and the external contact surface, and the function of conducting heat is achieved, meanwhile, the insulating property, the extensibility and the heat resistance temperature property of the pipeline are improved, the impact strength, the tensile strength and the bending strength are increased by adding the ACR impact modifier and the CPE impact modifier, and the oxidation resistance, the heat resistance and the stability of the pipeline are respectively improved by the anti-aging agent, the antioxidant, the heat resistance and the composite stabilizer, so that the service life of the protection pipe is prolonged.
2. According to the flame-retardant CPVC cable protection tube, grinding by a grinding machine, mixing by a reaction kettle, kneading by a vacuum kneading machine and extruding by a double-screw extruder are sequentially adopted, extruded particles are loaded into a hopper by a vacuum feeding machine, and are extruded by a die after being heated and plasticized by a charging barrel and the die, and then the flame-retardant CPVC cable protection tube is obtained through cooling and shaping.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
The invention provides a technical scheme that:
the flame-retardant CPVC cable protection pipe is prepared from the following raw materials in parts by mass: 36-38 parts of PVC resin, 80-83 parts of CPVC resin, 10-14 parts of light calcium carbonate, 10-12 parts of silicon rubber, 8-10 parts of ceramic powder, 6-8 parts of anti-aging agent, 6-8 parts of antioxidant, 4-6 parts of heat-resistant agent, 8.1-8.5 parts of composite stabilizer, 3.5-3.8 parts of ACR impact modifier, 3.5-4.5 parts of CPE impact modifier, 0.35-0.65 part of PE wax, 7-11 parts of MBS resin and 0.55-0.75 part of paraffin.
A preparation method of a flame-retardant CPVC cable protection pipe specifically comprises the following steps:
s1, respectively weighing 36-38 parts of PVC resin, 80-83 parts of CPVC resin, 10-14 parts of light calcium carbonate, 10-12 parts of silicone rubber, 8-10 parts of ceramic powder, 0.35-0.65 part of PE wax, 7-11 parts of MBS resin and 0.55-0.75 part of paraffin according to parts by weight, and respectively feeding the components into an industrial nano-grade grinding machine for grinding to obtain a nano-grade mixture A;
s2, weighing 6-8 parts of anti-aging agent, 6-8 parts of antioxidant, 4-6 parts of heat-resistant agent, 8.1-8.5 parts of composite stabilizer, 3.5-3.8 parts of ACR impact modifier and 3.5-4.5 parts of CPE impact modifier in sequence according to the parts by weight, simultaneously sending the nano-scale mixture A in S1 into a reaction kettle, sealing, and performing primary treatment on the material after sealing to form a fused mixed material B;
and S3, adding the fused mixed material B into a vacuum kneader, kneading the mixture at the temperature of 100-110 ℃ for 1.5-2 h, feeding the kneaded mixture into a double-screw extruder for extrusion granulation, feeding the obtained raw material particles into a hopper by using a vacuum feeding machine, heating and plasticizing the mixture by using a charging barrel and a die, extruding the mixture by using the die, and cooling and shaping the mixture to obtain the flame-retardant CPVC cable protection tube.
As a preferable scheme of the invention, the preliminary treatment in S2 comprises the specific steps of nitrogen replacement for 4-5 times, heating to 75-80 ℃, and uniformly stirring at a rotating speed of 600-800 r/min for 2-2.5 h.
According to the preferable scheme of the invention, in the S3, the temperature of the material cylinder is 170-180 ℃, the temperature of the die is 185-190 ℃, the temperature of a first area of a die cylinder of the double-screw extruder is 200-215 ℃, the temperature of a second area of the die cylinder is 200-205 ℃, the temperature of a third area of the die cylinder is 190-195 ℃, the temperature of a fourth area of the die cylinder is 180-185 ℃, the temperature of a fifth area of the die cylinder is 180-185 ℃, the temperature of a first area of a neck ring die is 200-205 ℃, the temperature of a second area of the neck ring die is 190-195 ℃, the temperature of a third area of the neck ring die is 180-185 ℃, the rotating speed of the screw is 450-500 r/min, and the melt pressure is controlled at 1.2-1.5 MPa.
As a preferred embodiment of the present invention, the flame retardant includes, but is not limited to: tributyl phosphate, tris (2-ethylhexyl) phosphate, or cresyl-diphenyl phosphate, antioxidants including, but not limited to: pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
In a preferred embodiment of the present invention, 36 parts by weight of PVC resin, 81 parts by weight of CPVC resin, 11 parts by weight of light calcium carbonate, 12 parts by weight of silicone rubber, 10 parts by weight of ceramic powder, 0.45 part by weight of PE wax, 8 parts by weight of MBS resin and 0.65 part by weight of paraffin are weighed in S1, and 6 parts by weight of anti-aging agent, 6 parts by weight of antioxidant, 5 parts by weight of heat resistant agent, 8.2 parts by weight of composite stabilizer, 3.5 parts by weight of ACR impact modifier and 3.6 parts by weight of CPE impact modifier are weighed in S2.
In a preferred embodiment of the present invention, 37 parts by weight of PVC resin, 81 parts by weight of CPVC resin, 12 parts by weight of light calcium carbonate, 10 parts by weight of silicone rubber, 8 parts by weight of ceramic powder, 0.45 part by weight of PE wax, 8 parts by weight of MBS resin, and 0.65 part by weight of paraffin wax are weighed in S1, and 7 parts by weight of anti-aging agent, 7 parts by weight of antioxidant, 5 parts by weight of heat resistant agent, 8.2 parts by weight of composite stabilizer, 3.6 parts by weight of ACR impact modifier, and 4 parts by weight of CPE impact modifier are weighed in S2.
In a preferred embodiment of the present invention, in S1, 38 parts by weight of PVC resin, 83 parts by weight of CPVC resin, 14 parts by weight of light calcium carbonate, 11 parts by weight of silicone rubber, 9 parts by weight of ceramic powder, 0.45 part by weight of PE wax, 8 parts by weight of MBS resin and 0.65 part by weight of paraffin wax are weighed, and in S2, 8 parts by weight of age resister, 8 parts by weight of antioxidant, 6 parts by weight of heat resistant agent, 8.5 parts by weight of composite stabilizer, 3.8 parts by weight of ACR impact modifier and 4.5 parts by weight of CPE impact modifier are weighed.
Detailed description of the preferred embodiments
Example 1: respectively weighing 36 parts of PVC resin, 81 parts of CPVC resin, 11 parts of light calcium carbonate, 12 parts of silicon rubber, 10 parts of ceramic powder, 0.45 part of PE wax, 8 parts of MBS resin, 0.65 part of paraffin, 6 parts of anti-aging agent, 6 parts of antioxidant, 5 parts of heat-resistant agent, 8.2 parts of composite stabilizer, 3.5 parts of ACR impact modifier and 3.6 parts of CPE impact modifier according to parts by weight.
Example 2: respectively weighing 38 parts of PVC resin, 83 parts of CPVC resin, 14 parts of light calcium carbonate, 11 parts of silicon rubber, 9 parts of ceramic powder, 0.45 part of PE wax, 8 parts of MBS resin, 0.65 part of paraffin, 8 parts of anti-aging agent, 8 parts of antioxidant, 6 parts of heat-resistant agent, 8.5 parts of composite stabilizer, 3.8 parts of ACR impact modifier and 4.5 parts of CPE impact modifier according to parts by weight.
Example 3: respectively weighing 38 parts of PVC resin, 83 parts of CPVC resin, 14 parts of light calcium carbonate, 11 parts of silicon rubber, 9 parts of ceramic powder, 0.45 part of PE wax, 8 parts of MBS resin, 0.65 part of paraffin, 8 parts of anti-aging agent, 8 parts of antioxidant, 6 parts of heat-resistant agent, 8.5 parts of composite stabilizer, 3.8 parts of ACR impact modifier and 4.5 parts of CPE impact modifier according to parts by weight.
Taking the formula proportions in the above examples 1, 2 and 3, the flame retardant CPVC cable protection pipe is prepared according to the following steps:
s1, respectively weighing PVC resin, CPVC resin, light calcium carbonate, silicon rubber, ceramic powder, PE wax, MBS resin and paraffin according to parts by weight, and respectively feeding the materials into an industrial nano-grade grinding machine for grinding to obtain a nano-grade mixture A;
s2, weighing an anti-aging agent, an antioxidant, a heat-resistant agent, a composite stabilizer, an ACR impact modifier and a CPE impact modifier according to the weight parts respectively, sequentially feeding the anti-aging agent, the antioxidant, the heat-resistant agent, the composite stabilizer, the ACR impact modifier and the CPE impact modifier into a reaction kettle, meanwhile, feeding the nanoscale mixture A in S1 into the reaction kettle, sealing, performing primary treatment on the materials after sealing, namely performing nitrogen replacement for 4-5 times, heating to 75-80 ℃, and uniformly stirring for 2-2.5 hours at the rotating speed of 600-800 r/min to form a fused mixed material B;
s3, adding the fused mixed material B into a vacuum kneader, kneading at the temperature of 100-110 ℃ for 1.5-2 h, feeding the kneaded mixture into a double-screw extruder for extrusion granulation, feeding the obtained raw material particles into a hopper by using a vacuum feeder, heating and plasticizing by using a charging barrel and a die, extruding by using a die, cooling and shaping to obtain the flame-retardant CPVC cable protection tube, wherein the temperature of the charging barrel is 170-180 ℃, the temperature of the die is 185-190 ℃, the temperature of a first area of a die cylinder of the double-screw extruder is 200-215 ℃, the temperature of a second area of the die cylinder is 200-205 ℃, the temperature of a third area of the die cylinder is 190-195 ℃, the temperature of a fourth area of the die cylinder is 180-185 ℃, the temperature of a first area of a die is 200-205 ℃, the temperature of a second area of a die cylinder is 190-195 ℃, the temperature of a third area of a die is 180-185 ℃ and the rotation speed of a screw is 450-500 r/min, the melt pressure is controlled at 1.2-1.5 MPa.
Taking the flame-retardant CPVC cable protection pipe prepared according to the steps and the formula proportions in the example 1, the example 2 and the example 3 and adopting a control group sample as a CPVC cable protection pipe in the existing market, carrying out experimental comparison to obtain the data which are specifically shown in the following table,
table 1CPVC cable protection pipe performance test results table
As can be seen from the table data, the flame-retardant CPVC cable protection pipe manufactured by the scheme is designed by using PVC resin and CPVC resin as main materials and light calcium, silicon rubber, ceramic powder, PE wax, MBS resin and paraffin as auxiliary materials, and adding an anti-aging agent, an antioxidant, a heat-resistant agent, a composite stabilizer, an ACR impact modifier and a CPE impact modifier in the manufacturing process to modify the main materials, wherein the interaction between the silicon rubber and the ceramic powder is utilized to reduce the contact thermal resistance generated between the surface of a heat source and the external contact surface, so that the heat conduction effect is achieved, the insulation property, the extensibility and the heat-resistant temperature property of the pipeline are improved, the impact strength, the tensile strength and the bending strength are increased by adding the ACR impact modifier and the CPE impact modifier, and the anti-aging agent, the antioxidant, the heat-resistant agent and the composite stabilizer respectively improve the oxidation resistance, the heat resistance and the stability of the pipeline, thereby ensuring that the service life of the protection tube is prolonged.
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 (8)
1. The flame-retardant CPVC cable protection pipe is prepared from the following raw materials in parts by mass: 36-38 parts of PVC resin, 80-83 parts of CPVC resin, 10-14 parts of light calcium carbonate, 10-12 parts of silicon rubber, 8-10 parts of ceramic powder, 6-8 parts of anti-aging agent, 6-8 parts of antioxidant, 4-6 parts of heat-resistant agent, 8.1-8.5 parts of composite stabilizer, 3.5-3.8 parts of ACR impact modifier, 3.5-4.5 parts of CPE impact modifier, 0.35-0.65 part of PE wax, 7-11 parts of MBS resin and 0.55-0.75 part of paraffin.
2. The preparation method of the flame-retardant CPVC cable protection pipe as claimed in claim 1, comprising the following steps:
s1, respectively weighing 36-38 parts of PVC resin, 80-83 parts of CPVC resin, 10-14 parts of light calcium carbonate, 10-12 parts of silicone rubber, 8-10 parts of ceramic powder, 0.35-0.65 part of PE wax, 7-11 parts of MBS resin and 0.55-0.75 part of paraffin according to parts by weight, and respectively feeding the components into an industrial nano-grade grinding machine for grinding to obtain a nano-grade mixture A;
s2, weighing 6-8 parts of anti-aging agent, 6-8 parts of antioxidant, 4-6 parts of heat-resistant agent, 8.1-8.5 parts of composite stabilizer, 3.5-3.8 parts of ACR impact modifier and 3.5-4.5 parts of CPE impact modifier in sequence according to the parts by weight, simultaneously sending the nano-scale mixture A in S1 into a reaction kettle, sealing, and performing primary treatment on the material after sealing to form a fused mixed material B;
and S3, adding the fused mixed material B into a vacuum kneader, kneading the mixture at the temperature of 100-110 ℃ for 1.5-2 h, feeding the kneaded mixture into a double-screw extruder for extrusion granulation, feeding the obtained raw material particles into a hopper by using a vacuum feeding machine, heating and plasticizing the mixture by using a charging barrel and a die, extruding the mixture by using the die, and cooling and shaping the mixture to obtain the flame-retardant CPVC cable protection tube.
3. A method for preparing a fire retardant CPVC cable protection tube as claimed in claim 2, wherein said method comprises: the specific steps of the preliminary treatment in the step S2 are nitrogen replacement for 4-5 times, heating to 75-80 ℃, and uniformly stirring at the rotating speed of 600-800 r/min for 2-2.5 h.
4. A method for preparing a fire retardant CPVC cable protection tube as claimed in claim 2, wherein said method comprises: in the S3, the temperature of a charging barrel is 170-180 ℃, the temperature of a die is 185-190 ℃, the temperature of a first area of a die cylinder of a double-screw extruder is 200-215 ℃, the temperature of a second area of the die cylinder is 200-205 ℃, the temperature of a third area of the die cylinder is 190-195 ℃, the temperature of a fourth area of the die cylinder is 180-185 ℃, the temperature of a fifth area of the die cylinder is 180-185 ℃, the temperature of a first area of a neck ring is 200-205 ℃, the temperature of a second area of the neck ring is 190-195 ℃, the temperature of a third area of the neck ring is 180-185 ℃, the rotating speed of the screw is 450-500 r/min, and the melt pressure is controlled at 1.2-1.5 MPa.
5. A method for preparing a fire retardant CPVC cable protection tube as claimed in claim 2, wherein said method comprises: the flame retardant includes, but is not limited to: tributyl phosphate, tris (2-ethylhexyl) phosphate, or cresyl-diphenyl phosphate, antioxidants including, but not limited to: pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
6. A method for preparing a fire retardant CPVC cable protection tube as claimed in claim 2, wherein said method comprises: 36 parts of PVC resin, 81 parts of CPVC resin, 11 parts of light calcium carbonate, 12 parts of silicon rubber, 10 parts of ceramic powder, 0.45 part of PE wax, 8 parts of MBS resin and 0.65 part of paraffin are respectively weighed in S1, and 6 parts of anti-aging agent, 6 parts of antioxidant, 5 parts of heat-resistant agent, 8.2 parts of composite stabilizer, 3.5 parts of ACR impact modifier and 3.6 parts of CPE impact modifier are respectively weighed in S2.
7. A method for preparing a fire retardant CPVC cable protection tube as claimed in claim 2, wherein said method comprises: 37 parts of PVC resin, 81 parts of CPVC resin, 12 parts of light calcium carbonate, 10 parts of silicon rubber, 8 parts of ceramic powder, 0.45 part of PE wax, 8 parts of MBS resin and 0.65 part of paraffin are respectively weighed in S1, and 7 parts of anti-aging agent, 7 parts of antioxidant, 5 parts of heat-resistant agent, 8.2 parts of composite stabilizer, 3.6 parts of ACR impact modifier and 4 parts of CPE impact modifier are respectively weighed in S2.
8. A method for preparing a fire retardant CPVC cable protection tube as claimed in claim 2, wherein said method comprises: 38 parts of PVC resin, 83 parts of CPVC resin, 14 parts of light calcium carbonate, 11 parts of silicon rubber, 9 parts of ceramic powder, 0.45 part of PE wax, 8 parts of MBS resin and 0.65 part of paraffin are respectively weighed in S1, and 8 parts of age resister, 8 parts of antioxidant, 6 parts of heat resistant agent, 8.5 parts of composite stabilizer, 3.8 parts of ACR impact modifier and 4.5 parts of CPE impact modifier are respectively weighed in parts by weight.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115232415A (en) * | 2022-07-28 | 2022-10-25 | 苏州国宇碳纤维科技有限公司 | HPVC modified material for protective tube and preparation method of HPVC cable protective tube |
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