CN116987355A - Ultraviolet-resistant polyvinyl chloride cable sheath material and preparation method thereof - Google Patents
Ultraviolet-resistant polyvinyl chloride cable sheath material and preparation method thereof Download PDFInfo
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- CN116987355A CN116987355A CN202311098881.0A CN202311098881A CN116987355A CN 116987355 A CN116987355 A CN 116987355A CN 202311098881 A CN202311098881 A CN 202311098881A CN 116987355 A CN116987355 A CN 116987355A
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- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 45
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 45
- 239000000463 material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 235000021355 Stearic acid Nutrition 0.000 claims description 7
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims description 7
- 239000006084 composite stabilizer Substances 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 7
- 239000004209 oxidized polyethylene wax Substances 0.000 claims description 7
- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims description 7
- 239000008117 stearic acid Substances 0.000 claims description 7
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 claims description 7
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 6
- 229960001545 hydrotalcite Drugs 0.000 claims description 6
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 239000008188 pellet Substances 0.000 claims 1
- 229920002725 thermoplastic elastomer Polymers 0.000 abstract description 8
- 230000002745 absorbent Effects 0.000 abstract description 5
- 239000002250 absorbent Substances 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 229920003023 plastic Polymers 0.000 abstract description 5
- 239000004033 plastic Substances 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 229920001971 elastomer Polymers 0.000 abstract description 2
- 238000005286 illumination Methods 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 239000005060 rubber Substances 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 230000032683 aging Effects 0.000 description 7
- 238000004806 packaging method and process Methods 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 239000008187 granular material Substances 0.000 description 5
- 229920001903 high density polyethylene Polymers 0.000 description 5
- 239000004700 high-density polyethylene Substances 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000004595 color masterbatch Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 239000004701 medium-density polyethylene Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229920000428 triblock copolymer Polymers 0.000 description 1
Classifications
-
- 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
- C08L27/02—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 not modified by chemical after-treatment
- C08L27/04—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 not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08L2201/08—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
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
Abstract
The application belongs to the technical field of cable jackets, and particularly relates to an ultraviolet light resistant polyvinyl chloride cable jacket material and a preparation method thereof. The ultraviolet light resistant agent is subjected to plasma surface treatment, the light shielding effect of the ultraviolet light absorbent is enhanced, the absorption wavelength range of the ultraviolet light absorbent is increased to 240-360nm, a shielding layer can be formed on the surface of a material after the ultraviolet light resistant agent is added to the formula, the risk of degradation of the material due to illumination is reduced, and the transparency and the color tone are basically kept unchanged for a long time. The SEBS thermoplastic elastomer modified PVC resin has better weather resistance because the SEBS molecular chain segment does not contain double bonds, the decomposition temperature of the SEBS thermoplastic elastomer modified PVC resin is more than 270 ℃ under the oxygen atmosphere, the SEBS thermoplastic elastomer modified PVC resin has the elasticity of rubber at normal temperature, and the SEBS thermoplastic elastomer modified PVC resin can show the processing fluidity of plastics at high temperature.
Description
Technical Field
The application belongs to the technical field of cable jackets, and particularly relates to an ultraviolet light resistant polyvinyl chloride cable jacket material and a preparation method thereof.
Background
The cable sheath is a cable protection device, and has the function of protecting the cable from mechanical damage and environmental corrosion, so that the use safety and service life of the cable are improved. The cable sheath market is very important for the cable industry, and the demand of the cable sheath market is synchronous with the demand of the cable industry.
In addition, with the improvement of the living standard of people, the requirements on electrical safety and quality are also higher and higher, which leads to the increase of the market demand of the cable sheath and improves the market prospect.
In choosing the connection product, it is important to have a part, namely the cable jacket, in addition to the joint fitting problem that must be considered. As the most important barrier for protecting the internal interface, various materials of the cable sheath play different roles in protection, and users need to find a proper and practical cable sheath according to actual use scenes of the users.
The cable jacket is the outermost layer of the cable, such as a polyvinyl chloride jacket.
In the cable sheath, compared with MDPE (medium density polyethylene) and LD/LLD (low density/linear low density), the HDPE (high density polyethylene) material has a regular molecular chain structure, fewer branched chains are provided, the branched chains are shorter, the molecular chains are orderly arranged, the inter-molecular chain distance is small, and the inter-molecular chain acting force is large. These short-range structural characteristics of HDPE determine its basic properties: the material has higher density, good crystallinity, high crystallinity and high acting force between molecular layers. Macroscopic appearance is that the material density is high, the mechanical properties such as tensile strength are better than LLD/LD/MD, the material hardness is high, the wear resistance is excellent, and the chemical corrosion resistance is good. However, because of the slightly poorer melt fluidity and the slightly poorer flexibility of the material, the processing of the material is more demanding.
The black high-density polyethylene material used as the sheath material is prepared by selecting the special high-density polyethylene base resin for the sheath material, adding high-quality carbon black color master batch and other relevant processing aids, mixing and granulating. High-quality carbon black color masterbatch content, carbon black granularity, dispersity and other factors have great influence on the long-term performance of the optical cable, such as ultraviolet radiation aging resistance, heat aging resistance and the like.
The industry has generally increased the amount of antioxidants to improve the UV resistance. However, a situation is often encountered in a daily production formula, that is, no matter how much proportion of the oxidant is increased, the oxidation time cannot be increased, and the stability of ageing resistance brought by later period is found; this directly affects the class a reject specification. In the conventional production process, polyethylene, an oxidant, a color master batch and the like are directly mixed, and then are plasticized and extruded by a granulator, and the granules are cut into sheath materials.
Disclosure of Invention
In order to solve the technical problems, the application provides the following technical scheme:
the application provides an ultraviolet light resistant polyvinyl chloride cable sheath material which comprises the following components in parts by weight:
100 parts of PVC (polyvinyl chloride) resin, 10-30 parts of trioctyl trimellitate, 1-30 parts of SEBS (linear triblock copolymer taking polystyrene as a terminal section and taking ethylene-butene copolymer obtained by hydrogenation of polybutadiene as an intermediate elastic block), 0-30 parts of calcium carbonate, 0.1-0.2 part of polyethylene wax, 0.1-0.2 part of stearic acid, 2-5 parts of calcium zinc composite stabilizer, 0.01-1 part of high-density oxidized polyethylene wax and 0-10 parts of hydrotalcite.
Preferably, the degree of polymerization of the PVC (polyvinyl chloride) resin is not less than 1300.
Preferably, the mesh number of the calcium carbonate is not less than 2500.
The formula of the application uses the heat-resistant plasticizer, and uses the compound system, thereby reducing the cost, and the heat-resistant plasticizer can ensure the heat resistance of the material under high-intensity ultraviolet rays to a certain extent.
The formula of the application is modified by blending SEBS and PVC, the addition amount of the SEBS is 0.5-1%, and the ultraviolet-resistant absorbent is additionally added, so that the aging-resistant PVC composite material can ensure that the aging-resistant PVC composite material does not change color basically after being aged at 115 ℃ of Australian standard, the aging resistance and the color-resistant performance of the material are enhanced, the degradation cracking phenomenon of the sheath in use is prevented, and the service life of the sheath is prolonged.
The application also provides a preparation method of the ultraviolet light resistant polyvinyl chloride cable sheath material, which comprises the following steps:
s1: according to weight portions, 100 portions of PVC (polyvinyl chloride) resin, 10-30 portions of trioctyl trimellitate, 1-30 portions of SEBS,0-30 portions of calcium carbonate, 0.1-0.2 portion of polyethylene wax, 0.1-0.2 portion of stearic acid, 2-5 portions of calcium zinc composite stabilizer, 0.01-1 portion of high density oxidized polyethylene wax and 0-10 portions of hydrotalcite are mixed to obtain a mixture;
s2: extruding, molding and granulating the mixture to obtain the ultraviolet light resistant polyvinyl chloride sheath material.
Preferably, in the step S2, a twin screw extruder is used for extrusion molding.
Further, the temperatures of zones 1 to 7 of the twin-screw extruder were set as follows: 140-160 ℃,160-180 ℃,160-180 ℃,160-180 ℃,170-180 ℃ and 170-190 ℃.
Preferably, in the step S2, a single screw granulator is used for granulation.
Preferably, in the step S2, the granulating method is a die face hot cutting process.
Preferably, in the step S2, the granules are dried at 75-85 ℃.
Further, the drying time is 1-2h.
According to the application, a product meeting international standards (Australia) is developed, the heat is steadily increased according to the demands of the current market on hard injection products, engineering plastic series products and the like, PVC (polyvinyl chloride) products are widened, the diversified collaborative development trend of the products is created, the bottleneck of selling the products which depend on PVC electric wire materials is broken through, and the PVC material suitable for the international standards is independently developed to meet the market demands.
The product overcomes the way that the traditional PVC is anti-color-changing through an anti-ultraviolet agent.
Compared with the prior art, the technical scheme of the application has the following advantages:
1. the ultraviolet light resistant agent is subjected to plasma surface treatment, the light shielding effect of the ultraviolet light absorbent is enhanced, the absorption wavelength range of the ultraviolet light absorbent is increased to 240-360nm, a shielding layer can be formed on the surface of a material after the ultraviolet light resistant agent is added to the formula, the risk of degradation of the material due to illumination is reduced, and the transparency and the color tone are basically kept unchanged for a long time.
2. The SEBS thermoplastic elastomer modified PVC resin has better weather resistance because the SEBS molecular chain segment does not contain double bonds, the decomposition temperature of the SEBS thermoplastic elastomer modified PVC resin is more than 270 ℃ under the oxygen atmosphere, the SEBS thermoplastic elastomer modified PVC resin has the elasticity of rubber at normal temperature, and the SEBS thermoplastic elastomer modified PVC resin can show the processing fluidity of plastics at high temperature.
Drawings
FIG. 1 is a flow chart of a preparation process of an ultraviolet light resistant PVC sheath material.
Detailed Description
The present application will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the application and practice it.
Example 1
The embodiment provides a preparation method of a high-flame-retardance polyvinyl chloride cable material, which comprises the following steps:
according to the weight parts, mixing 100 parts of PVC resin, 20 parts of trioctyl trimellitate, 15 parts of SEBS,15 parts of calcium carbonate, 0.1 part of polyethylene wax, 0.1 part of stearic acid, 3 parts of calcium-zinc composite stabilizer, 0.5 part of high-density oxidized polyethylene wax and 5 parts of hydrotalcite to obtain a mixture;
the mixture is extruded and molded by a double screw extruder, wherein the temperature of a zone 1 of the double screw extruder is set to 150 ℃, the temperature of a zone 2 of the double screw extruder is set to 170 ℃, the temperature of a zone 3 of the double screw extruder is set to 170 ℃, the temperature of a zone 4 of the double screw extruder is set to 170 ℃, the temperature of a zone 5 of the double screw extruder is set to 170 ℃, the temperature of a zone 6 of the double screw extruder is set to 175 ℃, and the temperature of a zone 7 of the double screw extruder is set to 180 ℃.
And (3) carrying out die surface hot cutting granulation by adopting a single-screw granulator, and storing the granules in a dry and ventilated warehouse after finishing granulation, and keeping away from a fire source. If the storage period is long, the drying treatment is needed, the drying temperature is 80 ℃, and the drying time is 1 hour.
When in packaging, a 25kg paper-plastic composite bag is used for packaging, and a film bag is lined; or large packages are adopted according to the requirements of customers, and the package specifications can be negotiated by both parties.
Example 2
The embodiment provides a preparation method of a high-flame-retardance polyvinyl chloride cable material, which comprises the following steps:
according to the weight parts, 100 parts of PVC resin, 10 parts of trioctyl trimellitate, 1 part of SEBS,0.1 part of polyethylene wax, 0.1 part of stearic acid, 2 parts of calcium-zinc composite stabilizer and 0.01 part of high-density oxidized polyethylene wax are mixed to obtain a mixture;
and extruding the mixture by a double-screw extruder, wherein the temperature of a 1 area of the double-screw extruder is set to 140 ℃, the temperature of a 2 area is set to 1600 ℃, the temperature of a 3 area is set to 160 ℃, the temperature of a 4 area is set to 160 ℃, the temperature of a 5 area is set to 160 ℃, the temperature of a 6 area is set to 170 ℃, and the temperature of a 7 area is set to 170 ℃.
And (3) carrying out die surface hot cutting granulation by adopting a single-screw granulator, and storing the granules in a dry and ventilated warehouse after finishing granulation, and keeping away from a fire source. If the storage period is long, the drying treatment is needed, the drying temperature is 70 ℃, and the drying time is 1 hour.
When in packaging, a 25kg paper-plastic composite bag is used for packaging, and a film bag is lined; or large packages are adopted according to the requirements of customers, and the package specifications can be negotiated by both parties.
Example 3
The embodiment provides a preparation method of a high-flame-retardance polyvinyl chloride cable material, which comprises the following steps:
according to the weight parts, 100 parts of PVC resin, 30 parts of trioctyl trimellitate, 30 parts of SEBS,30 parts of calcium carbonate, 0.2 part of polyethylene wax, 0.2 part of stearic acid, 5 parts of calcium-zinc composite stabilizer, 1 part of high-density oxidized polyethylene wax and 10 parts of hydrotalcite are mixed to obtain a mixture;
the mixture is extruded and molded by a double-screw extruder, wherein the temperature of a zone 1 of the double-screw extruder is set to 160 ℃, the temperature of a zone 2 of the double-screw extruder is set to 180 ℃, the temperature of a zone 3 of the double-screw extruder is set to 180 ℃, the temperature of a zone 4 of the double-screw extruder is set to 180 ℃, the temperature of a zone 5 of the double-screw extruder is set to 180 ℃, and the temperature of a zone 7 of the double-screw extruder is set to 190 ℃.
And (3) carrying out die surface hot cutting granulation by adopting a single-screw granulator, and storing the granules in a dry and ventilated warehouse after finishing granulation, and keeping away from a fire source. If the storage period is long, the drying treatment is needed, the drying temperature is 90 ℃, and the drying time is 2 hours.
When in packaging, a 25kg paper-plastic composite bag is used for packaging, and a film bag is lined; or large packages are adopted according to the requirements of customers, and the package specifications can be negotiated by both parties.
Effect evaluation 1
Table 1 example 1 results of performance test
| Performance index | Numerical value |
| Low temperature impact | -20℃ |
| Density of | 1.40g/cm 3 |
| Tensile strength | 18MPa |
| Elongation at break | 214.8％ |
| Volume resistivity | 3.4*10 10 Ω*m |
| 115 ℃ X21 day aging experiment: rate of change in tensile Strength | 8.7％ |
| Thermal deformation | 33％ |
| Elongation at break change rate | 15.4％ |
| Loss of quality | 14.7g/㎡ |
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present application will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present application.
Claims (10)
1. The ultraviolet light resistant polyvinyl chloride cable sheath material is characterized by comprising the following components in parts by weight:
100 parts of PVC resin, 10-30 parts of trioctyl trimellitate, 1-30 parts of SEBS,0-30 parts of calcium carbonate, 0.1-0.2 part of polyethylene wax, 0.1-0.2 part of stearic acid, 2-5 parts of calcium-zinc composite stabilizer, 0.01-1 part of high-density oxidized polyethylene wax and 0-10 parts of hydrotalcite.
2. The ultraviolet light resistant polyvinyl chloride cable sheath material of claim 1, wherein the PVC resin has a degree of polymerization of not less than 1300.
3. The ultraviolet light resistant polyvinyl chloride cable sheath material of claim 1, wherein the mesh number of the calcium carbonate is not less than 2500.
4. A method for preparing the ultraviolet light resistant polyvinyl chloride cable sheath material according to any one of claims 1-3, comprising the following steps:
s1: according to weight portions, 100 portions of PVC resin, 10-30 portions of trioctyl trimellitate, 1-30 portions of SEBS,0-30 portions of calcium carbonate, 0.1-0.2 portion of polyethylene wax, 0.1-0.2 portion of stearic acid, 2-5 portions of calcium-zinc composite stabilizer, 0.01-1 portion of high-density oxidized polyethylene wax and 0-10 portions of hydrotalcite are mixed to obtain a mixture;
s2: extruding, molding and granulating the mixture to obtain the ultraviolet light resistant polyvinyl chloride sheath material.
5. The method according to claim 4, wherein in the step S2, a twin screw extruder is used for extrusion molding.
6. The method according to claim 5, wherein the temperatures in zones 1 to 7 of the twin-screw extruder are set to: 140-160 ℃,160-180 ℃,160-180 ℃,160-180 ℃,170-180 ℃ and 170-190 ℃.
7. The method according to claim 4, wherein in the step S2, a single screw granulator is used for granulation.
8. The method according to claim 4, wherein in the step S2, the granulating method is die face hot cutting.
9. The process according to claim 4, wherein in step S2, the pellets are dried at 75 to 85 ℃.
10. The method of claim 9, wherein the drying time is 1 to 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311098881.0A CN116987355A (en) | 2023-08-29 | 2023-08-29 | Ultraviolet-resistant polyvinyl chloride cable sheath material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311098881.0A CN116987355A (en) | 2023-08-29 | 2023-08-29 | Ultraviolet-resistant polyvinyl chloride cable sheath material and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN116987355A true CN116987355A (en) | 2023-11-03 |
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| CN202311098881.0A Pending CN116987355A (en) | 2023-08-29 | 2023-08-29 | Ultraviolet-resistant polyvinyl chloride cable sheath material and preparation method thereof |
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- 2023-08-29 CN CN202311098881.0A patent/CN116987355A/en active Pending
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