CN103788530A - Low-smoke low-halogen flame-retardant insulation-grade PVC (polyvinyl chloride) sheath material for ultrahigh-voltage cable, and preparation of low-smoke low-halogen flame-retardant insulation-grade PVC sheath material - Google Patents
Low-smoke low-halogen flame-retardant insulation-grade PVC (polyvinyl chloride) sheath material for ultrahigh-voltage cable, and preparation of low-smoke low-halogen flame-retardant insulation-grade PVC sheath material Download PDFInfo
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Abstract
The invention discloses a low-smoke low-halogen flame-retardant insulation-grade PVC (polyvinyl chloride) sheath material for an ultrahigh-voltage cable, and preparation of the low-smoke low-halogen flame-retardant insulation-grade PVC sheath material. The low-smoke low-halogen flame-retardant insulation-grade PVC sheath material for the ultrahigh-voltage cable comprises the following components in parts by weight: 100 parts of PVC resin, 10-20 parts of plasticizer a, 10-15 parts of calcined clay, 1-3 parts of flame retardant a, 1-2 parts of pigment carbon black, 2-8 parts of flame retardant b, 2-5 parts of heat stabilizer, 5-10 parts of plasticizer b, 0.1-0.2 part of antioxidant, 1-2 parts of flame retardant synergist, 0.2-0.4 part of polyethylene wax, 0.5-1 part of lubricant, 10-20 parts of plasticizer c, 1-2 parts of metal naphthenate, 0.5-5 parts of capsaicine and 5-10 parts of antismoke agent. The low-smoke low-halogen flame-retardant insulation-grade PVC sheath material for the ultrahigh-voltage cable can be widely applied to an outer ultrahigh-voltage cable sheath which needs to be flame-retardant, is low in smoke density and halogen acid gas content during combustion, and is rat-proof and termite-proof.
Description
Technical field
The present invention relates to a kind of cable jacket material and preparation method, particularly low smoke and low halogen insulating grade PVC sheath material and preparation method thereof for a kind of extra-high-tension cable.
Background technology
In recent years, the polymer materialss such as plastics, rubber, synthon and goods thereof obtain flourish, they replace just rapidly the natural polymers such as steel, metal, cement and timber, cotton, are widely used in each department of the national economy such as industry, agricultural, military affairs.But synthetic materials belongs to inflammable, combustible matl mostly, fire retardant material often contains very high halogen, in combustion processes, can produce a large amount of toxic gases, cause the harm to environment, people's life security is formed to grave danger, therefore, the toxicant producing when how improving the flame retardant properties of synthetic materials and reducing its burning, has become a urgent problem.
The world today, every year because personnel and property damage that fire causes are very huge, fire preventing becomes people's very urgent hope in the heart.The major cause that causes a large amount of injures and deaths of personnel is cigarette and the toxic gas that combustible matl discharges in the time of burning.According to Britain and Japan statistics, dead in cigarette with toxic gas with dead identical in the human body cardinal principle of burning, be 40%～50%, the statistical information of U.S.'s fire-fighting foundation shows, in fire, 80% death is because toxicity on inhalation gas causes.In Marvenus Island War, on the His Majesty's of being hit by a bullet in dead more than 300 officers and men, most victims be have that the PVC cable of burning discharges containing due to the flue gas of carbon monoxide and hydrogenchloride, and in Taegu of Korea S railcar fire failure in 2003,92% victim is lethal owing to containing in a large number the smog of toxicant.
In soft PVC plastic for electric wire and cable, what the temperature resistant grade that stipulates in GB/T8815-2008 was higher is 90 ℃ of polyvinyl chloride insulation materials and sheath material, and wherein the volume specific resistance standard of sheath material is 1 × 10
9Ω .m, and 90 ℃ of pvc sheathing compounds that high-voltage transmission electrical network is used at present also will meet certain insulating property simultaneously, the volume specific resistance standard of sheath material brings up to 5 × 10
11Ω .m, some cables even require higher volume specific resistance.Although at present environmental protection, fire-retardant, protection against rodents, termite-proof 90 ℃ of polyvinyl chloride insulation level sheath materials of temperature resistant grade can be prepared by domestic Ye You producer, but do not possess low-smoke low-halogen performance, range of application is subject to certain limitation, and volume specific resistance is on the low side, can not meet current main flow cable production firm to the more requirement of high electrical performance of insulation-grade sheath material.And in the formula of 90 ℃ of polyvinyl chloride insulation level sheath materials producing of these producers, the collocation of flame-retardant system is unreasonable, causes production cost too high.
Summary of the invention
The object of the invention is to solve in prior art that existing 90 ℃ of temperature resistant grade PVC sheath material volume resistances are low, not protection against rodents and not termite-proof defect, provide one to possess more high electrical performance insulation-grade, and low cigarette, low halogen, fire-retardant, protection against rodents, termite-proof, temperature resistant grade is extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material of 90 ℃ and preparation method thereof.
The invention provides a kind of extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material, comprise each component of following weight part:
Preferably, the polymerization degree of described polyvinyl chloride resin is 800-1300.Can adopt suspension polymerization, be loose type resin.
Preferably, described softening agent a is dioctyl terephthalate; Described fire retardant a is three oxygen two antimony; Described softening agent b is didecyl phthalate; Described softening agent c is trioctyl trimellitate.
Preferably, described fire retardant b is inorganic hydroxide.More excellent, described fire retardant b is the most general magnesium hydroxide or the aluminium hydroxide of consumption on present market.
Preferably, described lubricant is G60.The main component of G60 is the dicarboxylic acid fat of fatty alcohol.
Preferably, described fire retarding synergist is borate; More excellent, described fire retarding synergist is for being zinc borate, magnesium borate or lime borate.
Preferably, described thermo-stabilizer is composite environment-friendly type thermo-stabilizer; More excellent, described thermo-stabilizer is calcium-zinc composite stabilizing agent or organic tin stablizer.
Preferably, described oxidation inhibitor is oxidation inhibitor dihydroxyphenyl propane.
Preferably, described metallic naphthenate is cyclic potassium naphthenate or copper naphthenate.
Preferably, described colour black is middle colour black.
Preferably, described smoke suppressor is selected from molybdenum compound.More excellent, described smoke suppressor is selected from molybdic oxide or ammonium octamolybdate.
Except above-mentioned raw materials, do not affecting under the prerequisite of insulating grade PVC sheath material performance, insulating grade PVC sheath material of the present invention, also can add some conventional additives, on a small quantity as industrial precipitated calcium, lightweight Calcium of intensifiens etc.
The preparation method of insulating grade PVC sheath material of the present invention comprises the following steps:
A, softening agent a, fire retardant a, fire retardant b, oxidation inhibitor, fire retarding synergist and smoke suppressor are inserted to three-roll grinder grind to form pulpous state material;
B, ground pulpous state material and polyvinyl chloride resin, calcinated argil, colour black, thermo-stabilizer, softening agent b, polyethylene wax, lubricant, softening agent c, metallic naphthenate and capsaicine are inserted to heating in high-speed kneading machine stir, high-speed kneading machine temperature is controlled at 100-120 ℃, and kneading time is 5-10 minute;
C, directly add twin screw grain-making machine to extrude the raw material stirring to make material, each section of Heating temperature of twin screw grain-making machine divided equally from 120～160 ℃ by heating hop count;
D, extrude the finished product drying of making material and obtain extra-high-tension cable of the present invention low smoke and low halogen insulating grade PVC sheath material.
The invention has the beneficial effects as follows: (1) the present invention meets the over-all properties about 90 ℃ of pvc sheathing compounds of GB8815-2008 standard regulation, and processing characteristics is good; (2) possess environmental-protecting performance, meet ROHS standard; (3) possess flame retardant properties (limiting oxygen index(LOI)>=30), sheath material electrical property is good, and volume specific resistance can exceed 1.0 × 10
12Ω m; (4) possesses low-smoke low-halogen performance (flaming combustion smoke density≤350, flameless combustion smoke density≤250, halogen acid gas content≤100mg/g, hydracid pH value>=2.5); (5) there is protection against rodents, termite-proof function, can be widely used in that needs are fire-retardant, protection against rodents and termite-proof place.
Embodiment
Below enumerate specific examples further to set forth the present invention, should be understood that following examples are only not used in and limit the scope of the invention for explanation.
Embodiment 1
1. experiment material
2. preparation method
Adopting above-mentioned raw materials to prepare extra-high-tension cable uses the method for low smoke and low halogen insulating grade PVC sheath material as follows:
A, by 20 kilograms of softening agent a dioctyl terephthalates, 1.5 kilograms, fire retardant a tri-oxygen two antimony, 5 kilograms of fire retardant b magnesium hydroxides, 0.15 kilogram, oxidation inhibitor, 1.5 kilograms of fire retarding synergist zinc borates, the pulpous state material of certain fineness inserted three-roll grinder and grinds to form by 5 kilograms of molybdic oxides;
B, by 100 kilograms of ground pulpous state material and polyvinyl chloride resins, 15 kilograms of calcinated argils, 2 kilograms of middle colour blacks, 4 kilograms of composite environment-friendly type thermo-stabilizers, softening agent b10 kilogram, 0.3 kilogram of polyethylene wax, 0.5 kilogram of highly-efficient lubricant G60,12 kilograms of softening agent c trioctyl trimellitates, 1.5 kilograms of cyclic potassium naphthenates, 0.5 kilogram of capsaicine is inserted heating in high-speed kneading machine and is carried out high-speed stirring, and high-speed kneading machine temperature is controlled at 100-120 ℃, and kneading time is 5-10 minute;
C, the raw material stirring is directly entered to twin screw grain-making machine extrude and make material, each section of Heating temperature of twin screw grain-making machine divided equally from 120-160 ℃ by heating hop count;
D, extrude the finished product of making material packing warehouse-in after drying.
Embodiment 2
1. experiment material:
2. preparation method:
Adopt above-mentioned raw materials, extra-high-tension cable uses the preparation method of low smoke and low halogen insulating grade PVC sheath material with embodiment 1.
Embodiment 3
1. experiment material:
2. preparation method:
Adopt above-mentioned raw materials, extra-high-tension cable uses the preparation method of low smoke and low halogen insulating grade PVC sheath material with embodiment 1.
Embodiment 4
1. experiment material:
2. preparation method:
Adopt above-mentioned raw materials, extra-high-tension cable uses the preparation method of low smoke and low halogen insulating grade PVC sheath material with embodiment 1.
Embodiment 5
1. experiment material:
2. preparation method:
Adopt above-mentioned raw materials, extra-high-tension cable uses the preparation method of low smoke and low halogen insulating grade PVC sheath material with embodiment 1.
Embodiment 6
1. experiment material:
2. preparation method:
Adopt above-mentioned raw materials, extra-high-tension cable uses the preparation method of low smoke and low halogen insulating grade PVC sheath material with embodiment 1.
Embodiment 7
The insulating grade PVC sheath material that above-described embodiment 1-6 is obtained is with reference to GB8815 standard, ROHS standard and the termite-proof performance test of protection against rodents, and result is as shown in table 1:
Low smoke and low halogen insulating grade PVC sheath material Performance Detection for table 1 extra-high-tension cable
Contrast experiment
Smoke suppressor in embodiment 1-6 experiment material is removed, adopt remaining raw material (surplus stock comprises polyvinyl chloride resin, softening agent a, calcinated argil, fire retardant a, colour black, fire retardant b, thermo-stabilizer, softening agent b, oxidation inhibitor, fire retarding synergist, polyethylene wax, lubricant, softening agent c, metallic naphthenate, capsaicine), be prepared as follows insulating grade PVC sheath material 1-6:
A, by softening agent a, fire retardant a, fire retardant b, oxidation inhibitor and fire retarding synergist are inserted three-roll grinder and grind to form the pulpous state material of certain fineness;
B, ground pulpous state material and polyvinyl chloride resin, calcinated argil, pigment carbon, thermo-stabilizer, softening agent b, polyethylene wax, lubricant, softening agent c, metallic naphthenate, capsaicine are inserted to heating in high-speed kneading machine carry out high-speed stirring, high-speed kneading machine temperature is controlled at 100-120 ℃, and kneading time is 5-10 minute;
C, the raw material stirring is directly entered to twin screw grain-making machine extrude and make material, each section of Heating temperature of twin screw grain-making machine divided equally from 120-160 ℃ by heating hop count;
D, extrude the finished product of making material packing warehouse-in after drying.
PVC sheath material 1-6 prepared by contrast experiment is with reference to GB/T 8323.1-2008, GB/T 8323.2-2008, and GB/T17650-1998 tests smoke density (having flame and nonflame), chloric acid gas content and hydracid p H value, and result is as shown in table 2:
Table 2 contrast is used insulating grade PVC sheath material Performance Detection
Visible smoke suppressor add the smoke density that not only greatly reduces PVC sheath material, halogen acid gas content while simultaneously also making the burning of PVC sheath material reduces greatly, the hydracid pH value of gas also increases, and has reduced the injury that extra-high-tension cable of the present invention low smoke and low halogen insulating grade PVC sheath material burns to human body.
Claims (10)
1. an extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material, comprises each component of following weight part:
2. extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material as claimed in claim 1, is characterized in that, described softening agent a is dioctyl terephthalate; Described fire retardant a is three oxygen two antimony; Described softening agent b is didecyl phthalate; Described fire retardant b is inorganic hydroxide; Described softening agent c is trioctyl trimellitate; Described lubricant is G60.
3. extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material as claimed in claim 2, is characterized in that, described inorganic hydroxide is selected from magnesium hydroxide or aluminium hydroxide.
4. extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material as claimed in claim 1, is characterized in that, described fire retarding synergist is borate.
5. extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material as claimed in claim 4, is characterized in that, described borate is zinc borate, magnesium borate or lime borate.
6. extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material as claimed in claim 1, is characterized in that, described thermo-stabilizer is selected from Ca-Zn composite heat stabilizer or organic tin thermo-stabilizer.
7. extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material as claimed in claim 1, is characterized in that, described oxidation inhibitor is selected from oxidation inhibitor dihydroxyphenyl propane.
8. extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material as claimed in claim 1, is characterized in that, described metallic naphthenate is selected from cyclic potassium naphthenate or copper naphthenate.
9. extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material as claimed in claim 1, is characterized in that, described smoke suppressor is selected from molybdenum compound.
10. the preparation method of extra-high-tension cable use low smoke and low halogen insulating grade PVC sheath material described in the arbitrary claim of claim 1-9, comprises the following steps:
A, softening agent a, fire retardant a, fire retardant b, oxidation inhibitor, fire retarding synergist and smoke suppressor are inserted to three-roll grinder grind to form pulpous state material;
B, ground pulpous state material and polyvinyl chloride resin, calcinated argil, colour black, thermo-stabilizer, softening agent b, polyethylene wax, lubricant, softening agent c, metallic naphthenate and capsaicine are inserted to heating in high-speed kneading machine stir, high-speed kneading machine temperature is controlled at 100-120 ℃, and kneading time is 5-10 minute;
C, directly add twin screw grain-making machine to extrude the raw material stirring to make material, each section of Heating temperature of twin screw grain-making machine divided equally from 120～160 ℃ by heating hop count;
D, extrude the finished product drying of making material and obtain extra-high-tension cable of the present invention low smoke and low halogen insulating grade PVC sheath material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210434588.2A CN103788530B (en) | 2012-11-02 | 2012-11-02 | Extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material and preparation thereof |
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| CN201210434588.2A CN103788530B (en) | 2012-11-02 | 2012-11-02 | Extra-high-tension cable low smoke and low halogen insulating grade PVC sheath material and preparation thereof |
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| CN103788530B CN103788530B (en) | 2016-07-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015184938A1 (en) * | 2014-06-06 | 2015-12-10 | 桐庐雷泰生物科技有限公司 | Rodent-proof pvc material |
| CN106543581A (en) * | 2015-09-18 | 2017-03-29 | 上海凯波特种电缆料厂有限公司 | A kind of automobile charging pile cable PVC Insulation Materials and its preparation |
| CN109265861A (en) * | 2018-08-31 | 2019-01-25 | 安庆市泽烨新材料技术推广服务有限公司 | Network system cable sheath material and preparation method thereof |
| CN109651729A (en) * | 2018-12-03 | 2019-04-19 | 浙江元通线缆制造有限公司 | A kind of low-smoke low-halogen polyvinyl chloride insulation material and preparation method thereof |
| CN110527219A (en) * | 2019-09-18 | 2019-12-03 | 天长市格瑞电缆材料有限公司 | A kind of CABLE MATERIALS of low-smoke low-halogen uvioresistant insect-proof ant-proof |
| CN112708220A (en) * | 2020-12-22 | 2021-04-27 | 金发科技股份有限公司 | Low-smoke-density low-emission extrusion-grade passenger car PVC and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05298941A (en) * | 1992-04-17 | 1993-11-12 | Yazaki Corp | High rat-proof vinyl chloride resin composition |
| CN1927934A (en) * | 2006-09-19 | 2007-03-14 | 上海电缆研究所 | Semi-horniness flame-proof PVC sheath material for high-voltage cable |
| CN101633765A (en) * | 2009-05-22 | 2010-01-27 | 上海凯波特种电缆料厂有限公司 | Insulating grade PVC sheath material for ultrahigh pressure cables and preparation method thereof |
-
2012
- 2012-11-02 CN CN201210434588.2A patent/CN103788530B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05298941A (en) * | 1992-04-17 | 1993-11-12 | Yazaki Corp | High rat-proof vinyl chloride resin composition |
| CN1927934A (en) * | 2006-09-19 | 2007-03-14 | 上海电缆研究所 | Semi-horniness flame-proof PVC sheath material for high-voltage cable |
| CN101633765A (en) * | 2009-05-22 | 2010-01-27 | 上海凯波特种电缆料厂有限公司 | Insulating grade PVC sheath material for ultrahigh pressure cables and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 周建国等: "《精细无机化工（第一版）》", 31 March 1999, 河南大学出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015184938A1 (en) * | 2014-06-06 | 2015-12-10 | 桐庐雷泰生物科技有限公司 | Rodent-proof pvc material |
| CN106543581A (en) * | 2015-09-18 | 2017-03-29 | 上海凯波特种电缆料厂有限公司 | A kind of automobile charging pile cable PVC Insulation Materials and its preparation |
| CN109265861A (en) * | 2018-08-31 | 2019-01-25 | 安庆市泽烨新材料技术推广服务有限公司 | Network system cable sheath material and preparation method thereof |
| CN109651729A (en) * | 2018-12-03 | 2019-04-19 | 浙江元通线缆制造有限公司 | A kind of low-smoke low-halogen polyvinyl chloride insulation material and preparation method thereof |
| CN110527219A (en) * | 2019-09-18 | 2019-12-03 | 天长市格瑞电缆材料有限公司 | A kind of CABLE MATERIALS of low-smoke low-halogen uvioresistant insect-proof ant-proof |
| CN112708220A (en) * | 2020-12-22 | 2021-04-27 | 金发科技股份有限公司 | Low-smoke-density low-emission extrusion-grade passenger car PVC and preparation method and application thereof |
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| CN103788530B (en) | 2016-07-13 |
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Address after: 201802 Shanghai City, Jiading District Nanxiang Town Yongle Village No. 271 Patentee after: Shanghai Kaibo cable special material Co., Ltd Address before: 201802 Shanghai City, Jiading District Nanxiang Town Yongle Village No. 271 Patentee before: SHANGHAI KAIBO SPECIAL CABLE FACTORY Co.,Ltd. |
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