CN103450549A - Expansive type halogen-free flame-retardant cable material - Google Patents
Expansive type halogen-free flame-retardant cable material Download PDFInfo
- Publication number
- CN103450549A CN103450549A CN2013103849909A CN201310384990A CN103450549A CN 103450549 A CN103450549 A CN 103450549A CN 2013103849909 A CN2013103849909 A CN 2013103849909A CN 201310384990 A CN201310384990 A CN 201310384990A CN 103450549 A CN103450549 A CN 103450549A
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- halogen
- free
- retardant
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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Abstract
The invention provides an expansive type halogen-free flame-retardant cable material. The formula of the cable material contains the following components in parts by weight: 100 parts of matrix resin, 50-70 parts of a halogen-free intumescent flame retardant, 0.5-4 parts of a surface modification agent, 0.5-8 parts of a compatilizer, 0.5-2 parts of a lubricant and 0.5-2 parts of an antioxidant, wherein the matrix resin is a mixture of ethylene-vinyl acetate copolymer (EVA) and polypropylene (PP) in a ratio ranging from 60:40 to 70:30. The intumescent halogen-free flame-retardant cable material has a good flame-retardant property and an excellent mechanical property.
Description
Technical field
The present invention relates to cable material, in particular to a kind of halogen-free intumescent flame-retardant CABLE MATERIALS.
Background technology
Development along with electric power, energy industry, flame retardant cable is extensively and profoundly in these industries, flame retardant cable commonly used is mainly cable with flame-retardant PVC insulation sheath at present, these cables can meet the fire-retardant demand of cable, but also exist the burning of Halogen fire-resistant cable material to produce the problem of secondary pollution simultaneously.Lot of domestic and international research shows, black smoke, acid mist and toxic gas that the flame retardant cable burning produces are enough to make people's death by suffocation.
When the without halide fire retardant polyolefin cable has overcome cable fire smog large, the defect such as poison gas is arranged, also can solve common halogen antimony simultaneously and be the CABLE MATERIALS problems such as easily aging, weathering resistance is poor.But without halide flame-proof polyolefine cable material also ubiquity the problems such as mechanics performance, combustionproperty and processing characteristics be not ideal enough.Therefore, finding out mechanical property and the combustionproperty that suitable flame-retardant formulations and technique improves the halogen-free flame-retardant cable material is urgent problem.
Summary of the invention
The invention solves deficiency of the prior art, the halogen-free intumescent flame-retardant CABLE MATERIALS that mechanical property is provided and has good burning performance.
Technical scheme of the present invention is: a kind of halogen-free intumescent flame-retardant CABLE MATERIALS, it is characterized in that, and comprise following component according to its formula of parts by weight:
Matrix resin: 100 parts, halogen-free expansion fire retardant: 50～70 parts, surface-modifying agent: 0.5～4 part, 0.5～8 part of compatilizer, 0.5～2 part of lubricant, 0.5～2 part, oxidation inhibitor; The mixture that wherein said matrix resin is ethylene-vinyl acetate copolymer EVA and polypropylene PP, in described mixture, the proportioning of EVA and PP is 60:40～70:30.
Preferably, described halogen-free expansion fire retardant is composed of the following components by weight: crystallization II-type ammonium polyphosphate with high degree of polymerization: 40～70 parts, and tetramethylolmethane or ethylene glycol: 8～16 parts, trimeric cyanamide and derivative thereof: 10～15 parts.
Preferably, described trimeric cyanamide and derivative thereof are one or more in trimeric cyanamide, boric acid trimeric cyanamide, ortho-phosphoric acid trimeric cyanamide and polyphosphoric acid melamine.
Preferably, described surface-modifying agent is the metatitanic acid coupling agent, and described metatitanic acid coupling agent carries out surface modification treatment to described halogen-free expansion fire retardant.
Preferably, described compatilizer is the maleic anhydride stem grafting polyolefin elastomerics.
Preferably, described maleic anhydride stem grafting polyolefin is one or more in maleic anhydride grafted polyethylene, maleic anhydride inoculated polypropylene and maleic anhydride grafted ethene-acetate ethylene copolymer.
Preferably, described lubricant is one or more in stearic acid, Zinic stearas, calcium stearate and amine hydroxybenzene.
Preferably, described oxidation inhibitor is one or more in antioxidant 1010, oxidation inhibitor 3125 and antioxidant CA.
Preferably, prepare the method for above-described a kind of halogen-free intumescent flame-retardant CABLE MATERIALS, comprise the following steps:
(1) halogen-free expansion fire retardant surface treatment: existing by halogen-free expansion fire retardant drying treatment in baking oven, then titanate coupling agent spray on the halogen-free expansion fire retardant of drying, then above-mentioned fire retardant is dropped in high mixer, mix 20 minutes under room temperature, then be warming up to 70 ± 5 ℃ of high-speed stirring 20 minutes;
(2) blend granulation: take and then be dosed in homogenizer according to the content of each component in formula, mix 5 minutes under room temperature, then melt extrude in twin screw extruder, obtain pellet.
The defect that solves prior art of the present invention, there is following beneficial effect: the proportioning of base resin EVA and PP in filling a prescription by change, elongation at break, the tensile strength of the halogen-free intumescent flame-retardant CABLE MATERIALS that different proportionings make are different with the burning grade, the burning grade of halogen-free intumescent flame-retardant CABLE MATERIALS prepared by formula of the present invention is all best, and tensile strength all is greater than 15MPa, elongation at break all is greater than 250%, and the mechanical property of fire retardant material is better.A kind of expanded halogen-free flame-resistant CABLE MATERIALS that the present invention improves is the CABLE MATERIALS of the good and good mechanical performance of a kind of flame retardant properties.
Embodiment
In order to make those skilled in the art person understand better the present invention, and above-mentioned advantage of the present invention can be become apparent more, below in conjunction with specific embodiment, the present invention is further detailed explanation.
embodiment 1-3
(1) halogen-free expansion fire retardant surface treatment: existing by halogen-free expansion fire retardant drying treatment in baking oven, temperature adjusting is 90 ℃ of left and right, then titanate coupling agent spray on the halogen-free expansion fire retardant of drying, then above-mentioned fire retardant is dropped in high mixer, mix 20 minutes under room temperature, then be warming up to 70 ± 5 ℃ of high-speed stirring 20 minutes;
(2) blend granulation: take and then be dosed in homogenizer according to the content of each component in formula table 1, mix 5 minutes under room temperature, then melt extrude in twin screw extruder, obtain pellet.
Processing parameter in twin screw extruder is: 160 ℃, 1st district, the first rank, 2 155 ℃, districts, 3 150 ℃, districts, 4 150 ℃, districts, 5 145 ℃, districts; 140 ℃, second-order 1st district, 2 145 ℃, districts, 3 140 ℃, districts; The rotating speed of twin screw is 40～55r/min.
The raw material of each component of using in the embodiment of the present invention is the raw material that market is easy to get; Instrument: two rank dual-screw pelletizer is the extruding pelletization unit by microcomputerized control, and the first rank are to be furnished with Compulsory feeder used intermeshing co-rotating twin-screw forcing machine; Second-order is the smaller single screw extrusion machine of L/D, and wherein the threaded block of twin screw extruder can be according to the processing characteristics independent assortment of material; The high-speed mixer model is GH-10DB, and Beijing plastics machinery factory produces; Oxygen index tester HC-2 type, horizontal vertical burning tester UL-94, electronic universal material testing machine.
performance test
The halogen-free intumescent flame-retardant CABLE MATERIALS and the commercially available halogen-free intumescent flame-retardant CABLE MATERIALS that in embodiments of the invention 1-3, prepare are carried out to performance test and contrast test result.Wherein, Mechanics Performance Testing, testing standard is GB/T1040-1992, the draw speed of sample material is 50mm/min; The vertical combustion test, test sample size 125mm * 10mm * 3.2mm, testing standard is UL94.
As shown in table 1, in the formula of embodiments of the invention, be constant at the consumption of other components of matrix resin (total amount of EVA and PP is 100 parts), the proportioning that changes EVA and PP is investigated the impact of the proportioning of EVA and PP on combustionproperty and the mechanical property of fire-resistant cable material.
As shown in table 2 performance test result, the ratio shared along with EVA in matrix resin increases, the elongation at break of the halogen-free intumescent flame-retardant CABLE MATERIALS made is increasing, when EVA:PP is 70:30, its elongation at break reaches 631%, and along with the shared ratio of EVA in matrix resin increases, the tensile strength of the halogen-free intumescent flame-retardant CABLE MATERIALS made diminishes, this character with EVA resin itself is relevant, the EVA resin is elastic resin, good with the inorganic combustion inhibitor consistency, the higher CABLE MATERIALS of producing of its content in formula more be not easy the fracture, but the ratio in formula neither be with being the bigger the better, the performance of CABLE MATERIALS also with the formula in other component closely related.
In embodiment 1-3, the ratio that is PP along with the ratio increase of EVA in formula reduces, the oxygen index of the expanded halogen-free flame-resistant CABLE MATERIALS of preparation increases, because the PP in formula increases, the hardness of the expanded halogen-free flame-resistant CABLE MATERIALS of preparation and the softening increase in temperature of catching fire, therefore the oxygen index of CABLE MATERIALS increases, its flame retardant properties also improves, the oxygen index of the CABLE MATERIALS in embodiment 1-3 all is greater than 27, the category that all belongs to nonflammable material, therefore all meet fire retardant material combustionproperty standard, and its burning grade is all V-0, all belongs to the good CABLE MATERIALS of combustionproperty.Therefore, the mechanical properties such as comprehensive elongation at break, tensile strength, and the combustionproperties such as burning grade and oxygen index judge, embodiment 3 is most preferred embodiment of the present invention, over-all properties the best of the expanded halogen-free flame-resistant CABLE MATERIALS prepared when the ratio of EVA:PP is 70:30 in formula.
Embodiment 1-3 and commercially available identical halogen-free intumescent flame-retardant CABLE MATERIALS income performance comparison, known by the result in table 2, the tensile strength of commercially available CABLE MATERIALS is that 14.8MPa all is less than the CABLE MATERIALS in the embodiment of the present invention, although the burning grade of commercially available CABLE MATERIALS is V-0, but its oxygen index is 27 to be less than the oxygen index in the embodiment of the present invention, the flame retardant properties that commercially available CABLE MATERIALS is described is good not as CABLE MATERIALS in the embodiment of the present invention.
The above; be only the specific embodiment of the present invention, protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claim was defined.
Table 1 formula table
Table 2 the performance test results
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 | Commercially available |
| Tensile strength (MPa) | 19.3 | 17.1 | 16.4 | 14.8 |
| Elongation at break (%) | 257 | 423 | 631 | 461 |
| The burning grade | V-0 | V-0 | V-0 | V-0 |
| Oxygen index % | 34 | 31 | 30 | 27 |
Claims (9)
1. a halogen-free intumescent flame-retardant CABLE MATERIALS, is characterized in that, according to its formula of parts by weight, comprises following component:
Matrix resin: 100 parts, halogen-free expansion fire retardant: 50～70 parts, surface-modifying agent: 0.5～4 part, 0.5～8 part of compatilizer, 0.5～2 part of lubricant, 0.5～2 part, oxidation inhibitor; The mixture that wherein said matrix resin is ethylene-vinyl acetate copolymer EVA and polypropylene PP, in described mixture, the proportioning of EVA and PP is 60:40～70:30.
2. a kind of halogen-free intumescent flame-retardant CABLE MATERIALS according to claim 1, is characterized in that, described halogen-free expansion fire retardant is composed of the following components by weight:
Crystallization II-type ammonium polyphosphate with high degree of polymerization: 40～70 parts, tetramethylolmethane or ethylene glycol: 8～16 parts, trimeric cyanamide and derivative thereof: 10～15 parts.
3. a kind of halogen-free intumescent flame-retardant CABLE MATERIALS according to claim 2, is characterized in that, described trimeric cyanamide and derivative thereof are one or more in trimeric cyanamide, boric acid trimeric cyanamide, ortho-phosphoric acid trimeric cyanamide and polyphosphoric acid melamine.
4. a kind of halogen-free intumescent flame-retardant CABLE MATERIALS according to claim 1, is characterized in that, described surface-modifying agent is the metatitanic acid coupling agent, and described metatitanic acid coupling agent carries out surface modification treatment to described halogen-free expansion fire retardant.
5. a kind of halogen-free intumescent flame-retardant CABLE MATERIALS according to claim 1, is characterized in that, described compatilizer is the maleic anhydride stem grafting polyolefin elastomerics.
6. a kind of halogen-free intumescent flame-retardant CABLE MATERIALS according to claim 5, it is characterized in that, described maleic anhydride stem grafting polyolefin is one or more in maleic anhydride grafted polyethylene, maleic anhydride inoculated polypropylene and maleic anhydride grafted ethene-acetate ethylene copolymer.
7. a kind of halogen-free intumescent flame-retardant CABLE MATERIALS according to claim 1, is characterized in that, described lubricant is one or more in stearic acid, Zinic stearas, calcium stearate and amine hydroxybenzene.
8. a kind of halogen-free intumescent flame-retardant CABLE MATERIALS according to claim 1, is characterized in that, described oxidation inhibitor is one or more in antioxidant 1010, oxidation inhibitor 3125 and antioxidant CA.
9. prepare the method for the described halogen-free intumescent flame-retardant CABLE MATERIALS of claim 1-8, it is characterized in that, comprise the following steps:
(1) halogen-free expansion fire retardant surface treatment: existing by halogen-free expansion fire retardant drying treatment in baking oven, then titanate coupling agent spray on the halogen-free expansion fire retardant of drying, then above-mentioned fire retardant is dropped in high mixer, mix 20 minutes under room temperature, then be warming up to 70 ± 5 ℃ of high-speed stirring 20 minutes;
(2) blend granulation: take and then be dosed in homogenizer according to the content of each component in formula, mix 5 minutes under room temperature, then melt extrude in twin screw extruder, obtain pellet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103849909A CN103450549A (en) | 2013-08-30 | 2013-08-30 | Expansive type halogen-free flame-retardant cable material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103849909A CN103450549A (en) | 2013-08-30 | 2013-08-30 | Expansive type halogen-free flame-retardant cable material |
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| CN103450549A true CN103450549A (en) | 2013-12-18 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788451A (en) * | 2014-01-07 | 2014-05-14 | 苏州奥凯材料技术有限公司 | PE (polyethylene) flame-retardant cable material and preparation method thereof |
| CN103865155A (en) * | 2014-03-26 | 2014-06-18 | 马鞍山市佳源环保科技有限公司 | Halogen-free flame retardant polyethylene insulated cable material and preparation method thereof |
| CN104151690A (en) * | 2014-07-25 | 2014-11-19 | 宁国新博能电子有限公司 | Halogen-free flame-retardant cable sheath material |
| CN107090123A (en) * | 2017-05-08 | 2017-08-25 | 天长市通联焊业有限公司 | A kind of Expansive type halogen-free flame-retardant cable material |
| CN110591229A (en) * | 2019-10-14 | 2019-12-20 | 高静静 | Low-smoke flame-retardant cable material and preparation method thereof |
| CN113061300A (en) * | 2020-01-02 | 2021-07-02 | 合肥杰事杰新材料股份有限公司 | Polypropylene composition with high filling and excellent thermal aging resistance and preparation method thereof |
| CN115433399A (en) * | 2022-10-09 | 2022-12-06 | 廊坊北化高分子材料有限公司 | Flame-retardant waterproof thermoplastic elastomer material, preparation method thereof and waterproof roll |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649088A (en) * | 2009-09-17 | 2010-02-17 | 公安部四川消防研究所 | Halogen-free intumescent flame-retardant polypropylene/ethylene vinyl acetate cable material |
| CN101735546A (en) * | 2009-12-30 | 2010-06-16 | 浙江北化阻燃材料有限公司 | High flame-retardant and high heat-resisting halogen-free expansion type fire-resistant cable material and preparation method thereof |
-
2013
- 2013-08-30 CN CN2013103849909A patent/CN103450549A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649088A (en) * | 2009-09-17 | 2010-02-17 | 公安部四川消防研究所 | Halogen-free intumescent flame-retardant polypropylene/ethylene vinyl acetate cable material |
| CN101735546A (en) * | 2009-12-30 | 2010-06-16 | 浙江北化阻燃材料有限公司 | High flame-retardant and high heat-resisting halogen-free expansion type fire-resistant cable material and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788451A (en) * | 2014-01-07 | 2014-05-14 | 苏州奥凯材料技术有限公司 | PE (polyethylene) flame-retardant cable material and preparation method thereof |
| CN103865155A (en) * | 2014-03-26 | 2014-06-18 | 马鞍山市佳源环保科技有限公司 | Halogen-free flame retardant polyethylene insulated cable material and preparation method thereof |
| CN104151690A (en) * | 2014-07-25 | 2014-11-19 | 宁国新博能电子有限公司 | Halogen-free flame-retardant cable sheath material |
| CN107090123A (en) * | 2017-05-08 | 2017-08-25 | 天长市通联焊业有限公司 | A kind of Expansive type halogen-free flame-retardant cable material |
| CN110591229A (en) * | 2019-10-14 | 2019-12-20 | 高静静 | Low-smoke flame-retardant cable material and preparation method thereof |
| CN113061300A (en) * | 2020-01-02 | 2021-07-02 | 合肥杰事杰新材料股份有限公司 | Polypropylene composition with high filling and excellent thermal aging resistance and preparation method thereof |
| CN115433399A (en) * | 2022-10-09 | 2022-12-06 | 廊坊北化高分子材料有限公司 | Flame-retardant waterproof thermoplastic elastomer material, preparation method thereof and waterproof roll |
| CN115433399B (en) * | 2022-10-09 | 2024-01-30 | 廊坊北化高分子材料有限公司 | Flame-retardant waterproof thermoplastic elastomer material, preparation method and waterproof coiled material |
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