CN113845717A - Low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material and preparation method thereof - Google Patents
Low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material and preparation method thereof Download PDFInfo
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- CN113845717A CN113845717A CN202111355361.4A CN202111355361A CN113845717A CN 113845717 A CN113845717 A CN 113845717A CN 202111355361 A CN202111355361 A CN 202111355361A CN 113845717 A CN113845717 A CN 113845717A
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- sheath material
- free flame
- polyolefin sheath
- smoke halogen
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- 239000000463 material Substances 0.000 title claims abstract description 50
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 29
- 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 28
- 239000003063 flame retardant Substances 0.000 title claims abstract description 28
- 239000000779 smoke Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 36
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 20
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 20
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 18
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 18
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 18
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000000347 magnesium hydroxide Substances 0.000 claims abstract description 14
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 11
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 239000008187 granular material Substances 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 4
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 4
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 4
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 4
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 4
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical group O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 claims 1
- 229940083037 simethicone Drugs 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000945 filler Substances 0.000 description 5
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229940008099 dimethicone Drugs 0.000 description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012796 inorganic flame retardant Substances 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005406 washing Methods 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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- 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
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
-
- 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
Landscapes
- 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 discloses a low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material and a preparation method thereof, wherein the polyolefin sheath material comprises the following components in parts by weight: 5-10 parts of ethylene vinyl acetate; 15-30 parts of linear low-density polyethylene resin; 3-5 parts of maleic anhydride grafted linear low-density polyethylene; 30-60 parts of magnesium hydroxide coated calcium carbonate; 0.5-1 part of a lubricant; 0-1 part of antioxidant; 1-2 parts of a silane coupling agent. The polyolefin sheath material has excellent mechanical property, water resistance, flame retardance and high-temperature pressure resistance, and is easy to process and low in production cost.
Description
Technical Field
The invention belongs to the technical field of cable materials, and particularly relates to a low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material and a preparation method thereof.
Background
The traditional cable sheath material is a product which is prepared by taking polyolefin resin as a base material, adding auxiliary agents such as inorganic flame retardant, filler, antioxidant, lubricant and the like, extruding and plasticizing the mixture by a screw in a proper proportion and mixing the mixture together. The inorganic flame retardant can improve the flame retardant property of the resin, the filler can reduce the material cost, and the antioxidant can improve the heat resistance of the product and delay the aging of the product; the lubricant can improve the processing performance of the product and make the material easier to demould and flow. The traditional cable sheath material needs to be added with a large amount of flame retardant, filler and the like to obtain good flame retardant effect and other properties; the filler is generally inorganic powder and has strong water absorption, so that the water resistance of the cable sheath material is poor.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material and a preparation method thereof; the polyolefin sheath material has excellent mechanical property, water resistance, flame retardance and high-temperature pressure resistance, and is easy to process and low in production cost.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material comprises the following components in parts by weight:
further, the content of vinyl acetate in the ethylene vinyl acetate is more than 18%.
Preferably, the lubricant is dimethicone.
Preferably, the silane coupling agent is at least one of vinyltrimethoxysilane, vinyltriethoxysilane and vinyltris (beta-methoxyethoxy) silane.
Further, the magnesium hydroxide coated calcium carbonate is prepared from magnesium sulfate, calcium carbonate and calcium hydroxide.
Preferably, the antioxidant is AT least one of antioxidant 300, antioxidant 1076, antioxidant AT-10 and antioxidant DLTP.
Further, the linear low-density polyethylene resin has a melt index of 40-60 g/10min at 190 ℃ under a load of 2.16 kg.
The invention further provides a preparation method of the low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material, which comprises the following steps:
(1) weighing ethylene vinyl acetate, linear low-density polyethylene resin, maleic anhydride grafted linear low-density polyethylene, magnesium hydroxide coated calcium carbonate, a lubricant, an antioxidant and a silane coupling agent in proportion, and uniformly mixing in a high-speed mixer;
(2) adding the materials mixed in the step (1) into a double-screw extruder for mixing and plasticizing, and then extruding and granulating by a single-screw extruder; and drying the granules by a rocking and rolling machine, and finally packaging the finished product.
Further, the heating temperature of the double-screw extruder is 160-210 ℃.
Further, the heating temperature of the single-screw extruder is 140-160 ℃.
The invention has the beneficial effects that: the invention takes linear low-density polyethylene resin and ethylene vinyl acetate as base materials, takes magnesium hydroxide coated calcium carbonate as filling, and adds silane coupling agent and other auxiliary agents, thereby improving the high-temperature pressure resistance, water resistance, flame retardance and mechanical property of the sheath material, improving the processing property of the sheath material and reducing the production cost; the magnesium hydroxide coated calcium carbonate is used as a filler, so that the mechanical properties such as the elongation at break, the tensile strength and the like of the sheath material can be improved, and the flame retardance of the cable material can be improved; the surface of the magnesium hydroxide coated calcium carbonate contains more-OH groups, the-OH groups can be crosslinked with a silane coupling agent, and the silane coupling agent can also react with a resin base material, so that a crosslinking structure with better water resistance is formed, and the water resistance of the cable sheath material is greatly improved.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a low-cost water-resistant low-smoke halogen-free flame-retardant polyolefin sheath material which comprises the following components in parts by weight:
wherein the content of vinyl acetate in the ethylene vinyl acetate is more than 18 percent.
Among them, the lubricant is preferably dimethicone.
Wherein, the silane coupling agent is preferably at least one of vinyltrimethoxysilane, vinyltriethoxysilane and vinyltris (beta-methoxyethoxy) silane.
Wherein, the magnesium hydroxide coated calcium carbonate is prepared by magnesium sulfate, calcium carbonate and calcium hydroxide; the method specifically comprises the following steps: adding water into calcium carbonate powder and magnesium sulfate to prepare slurry, adding calcium hydroxide at a certain temperature to perform stirring reaction, and after reacting for a certain time, filtering, washing and drying a product after the reaction to prepare the calcium carbonate coated with the magnesium hydroxide.
Wherein the antioxidant is AT least one of antioxidant 300, antioxidant 1076, antioxidant AT-10 and antioxidant DLTP.
Wherein the linear low density polyethylene resin has a melt index of 40-60 g/10min at 190 ℃ under a load of 2.16 kg.
The invention further provides a preparation method of the low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material, which comprises the following steps:
(1) weighing ethylene vinyl acetate, linear low-density polyethylene resin, maleic anhydride grafted linear low-density polyethylene, magnesium hydroxide coated calcium carbonate, a lubricant, an antioxidant and a silane coupling agent in proportion, and uniformly mixing in a high-speed mixer;
(2) adding the materials mixed in the step (1) into a double-screw extruder for mixing and plasticizing, and then extruding and granulating by a single-screw extruder; and drying the granules by a rocking and rolling machine, and finally packaging the finished product.
Wherein the heating temperature of the double-screw extruder is 160-210 ℃; the heating temperature of the single-screw extruder is 140-160 ℃.
Example 1
A low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material comprises the following components in parts by weight:
the preparation method of the low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material comprises the following steps:
(1) weighing ethylene vinyl acetate, linear low-density polyethylene resin, maleic anhydride grafted linear low-density polyethylene, magnesium hydroxide coated calcium carbonate, dimethyl silicone oil, antioxidant 300 and vinyl trimethoxy silane in proportion, and uniformly mixing in a high-speed mixer;
(2) adding the materials mixed in the step (1) into a double-screw extruder for mixing and plasticizing, and then extruding and granulating by a single-screw extruder; and drying the granules by a rocking and rolling machine, and finally packaging the finished product.
Wherein the specific heating temperature of each zone of the double-screw extruder is 160 ℃, 165 ℃, 170 ℃, 180 ℃, 190 ℃, 195 ℃, 200 ℃, 210 ℃, 200 ℃ and 190 ℃; the heating temperature of the single-screw extruder is 140-160 ℃.
Example 2
A low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material comprises the following components in parts by weight:
the preparation method of the low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material comprises the following steps:
(1) weighing ethylene vinyl acetate, linear low-density polyethylene resin, maleic anhydride grafted linear low-density polyethylene, magnesium hydroxide coated calcium carbonate, dimethyl silicone oil, an antioxidant 1076 and vinyl triethoxysilane in proportion, and uniformly mixing in a high-speed mixer;
(2) adding the materials mixed in the step (1) into a double-screw extruder for mixing and plasticizing, and then extruding and granulating by a single-screw extruder; and drying the granules by a rocking and rolling machine, and finally packaging the finished product.
Wherein the specific heating temperature of each zone of the double-screw extruder is 160 ℃, 165 ℃, 170 ℃, 180 ℃, 190 ℃, 195 ℃, 200 ℃, 210 ℃, 200 ℃ and 190 ℃; the heating temperature of the single-screw extruder is 140-160 ℃.
Example 3
A low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material comprises the following components in parts by weight:
the preparation method of the low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material comprises the following steps:
(1) weighing ethylene vinyl acetate, linear low-density polyethylene resin, maleic anhydride grafted linear low-density polyethylene, magnesium hydroxide coated calcium carbonate, dimethyl silicone oil, an antioxidant DLTP and vinyl tri (beta-methoxyethoxy) silane according to a proportion, and putting the mixture into a high-speed mixer for uniformly mixing;
(2) adding the materials mixed in the step (1) into a double-screw extruder for mixing and plasticizing, and then extruding and granulating by a single-screw extruder; and drying the granules by a rocking and rolling machine, and finally packaging the finished product.
Wherein the specific heating temperature of each zone of the double-screw extruder is 160 ℃, 165 ℃, 170 ℃, 180 ℃, 190 ℃, 195 ℃, 200 ℃, 210 ℃, 200 ℃ and 190 ℃; the heating temperature of the single-screw extruder is 140-160 ℃.
The sheath materials of examples 1 to 3 were extruded to form strands, and the resulting strands were subjected to comprehensive property tests, the property results of which are shown in table 1:
TABLE 1
As shown in Table 1, the polyolefin sheath material has excellent mechanical properties, water resistance and high temperature and pressure resistance, and is easy to process and low in production cost.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material is characterized by comprising the following components in parts by weight:
2. the low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material as claimed in claim 1, wherein the content of vinyl acetate in the ethylene vinyl acetate is more than 18%.
3. The low-cost easy-to-process water-resistant low-smoke halogen-free flame-retardant polyolefin sheath material as claimed in claim 1, wherein the lubricant is simethicone.
4. The low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material as claimed in claim 1, wherein the silane coupling agent is at least one of vinyltrimethoxysilane, vinyltriethoxysilane and vinyltris (beta-methoxyethoxy) silane.
5. The low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material as claimed in claim 1, wherein the magnesium hydroxide coated calcium carbonate is prepared from magnesium sulfate, calcium carbonate and calcium hydroxide.
6. The low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material as claimed in claim 1, wherein the antioxidant is AT least one of antioxidant 300, antioxidant 1076, antioxidant AT-10 and antioxidant DLTP.
7. The low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material as claimed in claim 1, wherein the linear low-density polyethylene resin has a melt index of 40-60 g/10min at 190 ℃ under a load of 2.16 kg.
8. A preparation method of the low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material as claimed in claims 1 to 7, characterized by comprising the following steps:
(1) weighing ethylene vinyl acetate, linear low-density polyethylene resin, maleic anhydride grafted linear low-density polyethylene, magnesium hydroxide coated calcium carbonate, a lubricant, an antioxidant and a silane coupling agent in proportion, and uniformly mixing in a high-speed mixer;
(2) adding the materials mixed in the step (1) into a double-screw extruder for mixing and plasticizing, and then extruding and granulating by a single-screw extruder; and drying the granules by a rocking and rolling machine, and finally packaging the finished product.
9. The preparation method of the low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material according to claim 8, wherein the heating temperature of the double-screw extruder is 160-210 ℃.
10. The preparation method of the low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material according to claim 8, wherein the heating temperature of the single-screw extruder is 140-160 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111355361.4A CN113845717A (en) | 2021-11-16 | 2021-11-16 | Low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111355361.4A CN113845717A (en) | 2021-11-16 | 2021-11-16 | Low-cost waterproof low-smoke halogen-free flame-retardant polyolefin sheath material and preparation method thereof |
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| CN113845717A true CN113845717A (en) | 2021-12-28 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103773082A (en) * | 2014-02-17 | 2014-05-07 | 中国矿业大学(北京) | Preparation method of magnesium-hydroxide-coated calcium carbonate inorganic composite flame retardant filler |
| CN111117054A (en) * | 2019-12-31 | 2020-05-08 | 安徽蒙特尔电缆集团有限公司 | Low-smoke halogen-free flame-retardant B1-grade polyolefin cable sheath material and preparation method thereof |
-
2021
- 2021-11-16 CN CN202111355361.4A patent/CN113845717A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103773082A (en) * | 2014-02-17 | 2014-05-07 | 中国矿业大学(北京) | Preparation method of magnesium-hydroxide-coated calcium carbonate inorganic composite flame retardant filler |
| CN111117054A (en) * | 2019-12-31 | 2020-05-08 | 安徽蒙特尔电缆集团有限公司 | Low-smoke halogen-free flame-retardant B1-grade polyolefin cable sheath material and preparation method thereof |
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Application publication date: 20211228 |
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