CN105086206A - High-reinforcement fire-resisting cable sheathing material and preparation method therefor - Google Patents
High-reinforcement fire-resisting cable sheathing material and preparation method therefor Download PDFInfo
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- CN105086206A CN105086206A CN201510442337.2A CN201510442337A CN105086206A CN 105086206 A CN105086206 A CN 105086206A CN 201510442337 A CN201510442337 A CN 201510442337A CN 105086206 A CN105086206 A CN 105086206A
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Abstract
The invention discloses a high-reinforcement fire-resisting cable sheathing material and a preparation method therefor. The material is characterized by being prepared from the following raw materials in parts by weight: 3-6 parts of EVA (Ethylene-Vinyl Acetate copolymer) resin, 2-4 parts of anhydrous lithium chloride, 90-100 parts of polyvinyl chloride, 10-15 parts of magnesium hydroxide, 5-10 parts of antimony trioxide, 10-14 parts of nano clay, 0.3-0.7 part of silane coupling agent kh550, 0.5-1 part of polyvinyl alcohol, 0.1-0.3 part of sodium dodecylbenzene sulfonate, 0.5-2 parts of sodium bicarbonate, 2-5 parts of styrene, 0.02-0.05 part of potassium persulfate, 10-15 parts of dioctyl terephthalate, 3-5 parts of zein fibers, 1-2 parts of barium stearate, 3-5 parts of hydrotalcite powder and a proper volume of water. The cable sheathing material prepared by the method has excellent flame-retardant and fire-resisting properties, so that cables are prevented from becoming fire diffusion sources in fires; the cable sheathing material has outstanding high-pressure wear resistance, so that the service lives of the cables are prolonged; and the formula is reasonable.
Description
Technical field
The present invention relates to cable material field, particularly relate to a kind of high reinforcement flame resistant cable sheath material and preparation method thereof.
Background technology
Digital communication and transmission cable is one with the fastest developing speed in various cable, but cable also brings the risk of fire easily providing to society simultaneously, cable is because self and external reason are lighted, just likely spread to outward in buildings along the direction of cable running, refire other combustiblematerialss, cause larger fire, cable also can produce poisonous smog when burning simultaneously, cause the loss of lives and properties, therefore along with the raising of awareness of safety, people are also just more and more higher to the flame-retardancy requirements of cable, the flame retardant properties of cable depends on its coating material used, conventional CABLE MATERIALS is polyvinyl chloride, polyolefine low smoke and zero halogen material, rubber etc.But polyolefine low smoke and zero halogen material, rubber need to add a large amount of fire retardants to reach suitable flame retardant properties, cause the significantly decline of mechanical property and electrical property, and pvc material is because good flame retardant resistance and cheap price, remain the preferred material of high flame-retardant cable material.The cable of different field, different purposes, structural difference is very large, particularly bunched cables, but cable always comprises conductor and insulating material on the whole, and other subsidiary material.Insulating material is used for insulation layer, restrictive coating, and polymer is because in self excellent characteristic insulation layer of being doubly widely used in cable and restrictive coating.Polyvinyl chloride is fire retardant material inherently, its oxygen index is very high, good flame retardation effect, but pure pvc material is rigid chain segment, just start to decompose at 90 ° of more than C, processing will carry out modification to it, improve decomposition temperature, and add the flame retardant properties that fire retardant improves polyvinyl chloride further wherein.
The burning of polyvinyl chloride can be divided into heating, decompose, ignite, burn and propagate these stages, polyvinyl chloride cigarette in the process of burning is very large and can produce HCl toxic gas, so the flammable product that fire retardant reduces polyvinyl chloride decomposition generation will be added, stop or dilute the effusion of decomposing and producing inflammable gas product, the decomposition temperature of magnesium hydroxide is high, dehydration reaction is there is after decomposition, the amount of heat of polymer surface can be absorbed, reduce the surface temperature of incendiary material, dehydration simultaneously produces a large amount of water vapour, dilution inflammable gas and oxygen concentration, but the consistency of magnesium hydroxide and macromolecular material is not fine.The fire retardant of different varieties adds together, often than single add will be good many, it is maximum that the present invention adopts different materials synergy to adopt special technique that flame retardant properties is performed to, and it is good with the consistency of polyvinyl chloride, good dispersity, the various aspects of performance of polyvinyl chloride can not be reduced, there is good market application foreground.
Summary of the invention
The object of this invention is to provide a kind of high reinforcement flame resistant cable sheath material and preparation method thereof.
In order to realize object of the present invention, the present invention is by following scheme implementation:
A kind of high reinforcement flame resistant cable sheath material and preparation method thereof, is made up of the raw material of following weight part: EVA resin 3-6, Lithium chloride (anhydrous) 2-4, polyvinyl chloride 90-100, magnesium hydroxide 10-15, antimonous oxide 5-10, nanoclay 10-14, silane coupling agent kh5500.3-0.7, polyvinyl alcohol 0.5-1, Sodium dodecylbenzene sulfonate 0.1-0.3, sodium bicarbonate 0.5-2, vinylbenzene 2-5, Potassium Persulphate 0.02-0.05, dioctyl terephthalate 10-15, zein fiber 3-5, barium stearate 1-2, hydrotalcite powder 3-5, water are appropriate;
One of the present invention high reinforcement flame resistant cable sheath material and preparation method thereof, be made up of following concrete steps:
(1) magnesium hydroxide, nanoclay, antimonous oxide and silane coupling agent kh550 are mixed, be added to grinding machine for grinding to be uniformly dispersed, add polyvinyl alcohol solution mix and blend to be again added in tablets press and to make the particle of particle diameter 0.9-1.5 μm of size, for subsequent use after drying;
(2) step (1) is added in the four-necked bottle with driven stirring rod and reflux condensing tube, add appropriate water and stir into slurries, stirring is stopped to add Sodium dodecylbenzene sulfonate and sodium bicarbonate, vinylbenzene is added after stirring 0.5h in a nitrogen atmosphere, persulfate aqueous solution is dripped after mixture being warming up to 80 ° of C, constant temperature is centrifugal after keeping 80 ° of C8h, with dry under 80 ° of C in an oven after deionized water rinsing, after to be ground into 300-400 order for subsequent use;
(3) dried Lithium chloride (anhydrous), polyvinyl chloride and EVA resin are mixed, then be added to extruding pelletization in twin screw extruder, heating and temperature control, at 160-180 ° of C, obtains modified polyvinyl chloride particle;
(4) product being prepared by step (3) gained is added in mill with all the other remaining materials plasticates, front roll temperature controls at 160 ± 5 ° of C, rear roll temperature controls at 155 ± 5 ° of C, spacing controls at 0.1mm, add material roller refining prepared by step (2) again, thin-pass repeatedly makes to mix to plastify, naturally cool to room temperature after mixing, mixture is transferred to compression moulding under 180 ° of C in vulcanizing press.
Advantage of the present invention is: the present invention adopts Lithium chloride (anhydrous) and EVA resin blending and modifying to improve the decomposition temperature of polyvinyl chloride, and improve elasticity and the resistance to deterioration of polyvinyl chloride, by magnesium hydroxide, nanoclay and antimonous oxide cooperatively interact and at its Surface coating vinylbenzene, enhance and the consistency of polyvinyl chloride and its dispersiveness, do not affect the mechanical property of polyvinyl chloride itself, and the toxic gas produced when effectively can dilute polyvinyl chloride burning, improve flame retardant effect to a great extent, expand range of application, the zein fiber added, barium stearate and hydrotalcite powder used in combination, pvc high pressure can greatly be improved, wear-resisting, the performance of the aspect such as fire-resistant and toughness reinforcing, cable sheath material prepared by the present invention has outstanding fire-retardant, fire performance, cable is made to avoid becoming condition of a fire diffuse source head in fire, product high-pressure anti-wear performance is outstanding, cable is extended work-ing life, formula rationally.
specific embodiments
Below by specific examples, the present invention is described in detail.
A kind of high reinforcement flame resistant cable sheath material and preparation method thereof, is made up of the raw material of following weight part (kilogram): EVA resin 4, Lithium chloride (anhydrous) 3, polyvinyl chloride 100, magnesium hydroxide 14, antimonous oxide 8, nanoclay 12, silane coupling agent kh5500.5, polyvinyl alcohol 0.7, Sodium dodecylbenzene sulfonate 0.2, sodium bicarbonate 0.8, vinylbenzene 3, Potassium Persulphate 0.03, dioctyl terephthalate 13, zein fiber 4, barium stearate 1, hydrotalcite powder 4, water are appropriate;
One of the present invention high reinforcement flame resistant cable sheath material and preparation method thereof, be made up of following concrete steps:
(1) magnesium hydroxide, nanoclay, antimonous oxide and silane coupling agent kh550 are mixed, be added to grinding machine for grinding to be uniformly dispersed, add polyvinyl alcohol solution mix and blend to be again added in tablets press and to make the particle of particle diameter 0.9-1.5 μm of size, for subsequent use after drying;
(2) step (1) is added in the four-necked bottle with driven stirring rod and reflux condensing tube, add appropriate water and stir into slurries, stirring is stopped to add Sodium dodecylbenzene sulfonate and sodium bicarbonate, vinylbenzene is added after stirring 0.5h in a nitrogen atmosphere, persulfate aqueous solution is dripped after mixture being warming up to 80 ° of C, constant temperature is centrifugal after keeping 80 ° of C8h, with dry under 80 ° of C in an oven after deionized water rinsing, after to be ground into 400 orders for subsequent use;
(3) dried Lithium chloride (anhydrous), polyvinyl chloride and EVA resin are mixed, then be added to extruding pelletization in twin screw extruder, heating and temperature control, at 170 ° of C, obtains modified polyvinyl chloride particle;
(4) product being prepared by step (3) gained is added in mill with all the other remaining materials plasticates, front roll temperature controls at 160 ± 5 ° of C, rear roll temperature controls at 155 ± 5 ° of C, spacing controls at 0.1mm, add material roller refining prepared by step (2) again, thin-pass repeatedly makes to mix to plastify, naturally cool to room temperature after mixing, mixture is transferred to compression moulding under 180 ° of C in vulcanizing press.
The polyvinyl chloride cable material prepared according to embodiment and common CABLE MATERIALS performance comparison, tensile strength improves 43.6%, tensile strength (158 ° of C, 168h) after aging improves 44.1%, and elongation improves 68.6%, elongation (158 ° of C after aging, 168h) improve 71.4%, oxygen index improves 6.5%, and dielectric strength improves 26.9%, CABLE MATERIALS of the present invention is better than common polyvinyl chloride cable material performance, is worthy to be popularized.
Claims (2)
1. one kind high reinforcement flame resistant cable sheath material and preparation method thereof, it is characterized in that, be made up of the raw material of following weight part: EVA resin 3-6, Lithium chloride (anhydrous) 2-4, polyvinyl chloride 90-100, magnesium hydroxide 10-15, antimonous oxide 5-10, nanoclay 10-14, silane coupling agent kh5500.3-0.7, polyvinyl alcohol 0.5-1, Sodium dodecylbenzene sulfonate 0.1-0.3, sodium bicarbonate 0.5-2, vinylbenzene 2-5, Potassium Persulphate 0.02-0.05, dioctyl terephthalate 10-15, zein fiber 3-5, barium stearate 1-2, hydrotalcite powder 3-5, water are appropriate.
2. a kind of high reinforcement flame resistant cable sheath material and preparation method thereof according to claim 1, is characterized in that, be made up of following concrete steps:
(1) magnesium hydroxide, nanoclay, antimonous oxide and silane coupling agent kh550 are mixed, be added to grinding machine for grinding to be uniformly dispersed, add polyvinyl alcohol solution mix and blend to be again added in tablets press and to make the particle of particle diameter 0.9-1.5 μm of size, for subsequent use after drying;
(2) step (1) is added in the four-necked bottle with driven stirring rod and reflux condensing tube, add appropriate water and stir into slurries, stirring is stopped to add Sodium dodecylbenzene sulfonate and sodium bicarbonate, vinylbenzene is added after stirring 0.5h in a nitrogen atmosphere, persulfate aqueous solution is dripped after mixture being warming up to 80 ° of C, constant temperature is centrifugal after keeping 80 ° of C8h, with dry under 80 ° of C in an oven after deionized water rinsing, after to be ground into 300-400 order for subsequent use;
(3) dried Lithium chloride (anhydrous), polyvinyl chloride and EVA resin are mixed, then be added to extruding pelletization in twin screw extruder, heating and temperature control, at 160-180 ° of C, obtains modified polyvinyl chloride particle;
(4) product being prepared by step (3) gained is added in mill with all the other remaining materials plasticates, front roll temperature controls at 160 ± 5 ° of C, rear roll temperature controls at 155 ± 5 ° of C, spacing controls at 0.1mm, add material roller refining prepared by step (2) again, thin-pass repeatedly makes to mix to plastify, naturally cool to room temperature after mixing, mixture is transferred to compression moulding under 180 ° of C in vulcanizing press.
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| CN201510442337.2A CN105086206A (en) | 2015-07-27 | 2015-07-27 | High-reinforcement fire-resisting cable sheathing material and preparation method therefor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105646803A (en) * | 2016-04-18 | 2016-06-08 | 刘高志 | Environment-friendly flame-retardant insulated cable material and preparation method thereof |
| CN106589658A (en) * | 2016-10-25 | 2017-04-26 | 扬州华宇电缆有限公司 | Modified polyvinyl chloride insulating material for flame-retardant cold-resistant high-performance shielding flexible power cable |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1978556A (en) * | 2006-12-06 | 2007-06-13 | 中国科学院长春应用化学研究所 | Method for preparing nano coating additive emulsion with flame-retarding characteristic |
| CN102719040A (en) * | 2012-06-29 | 2012-10-10 | 苏州银禧科技有限公司 | Wear-resisting flame-retardant polyvinyl chloride insulation and sheathing materials |
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2015
- 2015-07-27 CN CN201510442337.2A patent/CN105086206A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1978556A (en) * | 2006-12-06 | 2007-06-13 | 中国科学院长春应用化学研究所 | Method for preparing nano coating additive emulsion with flame-retarding characteristic |
| CN102719040A (en) * | 2012-06-29 | 2012-10-10 | 苏州银禧科技有限公司 | Wear-resisting flame-retardant polyvinyl chloride insulation and sheathing materials |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105646803A (en) * | 2016-04-18 | 2016-06-08 | 刘高志 | Environment-friendly flame-retardant insulated cable material and preparation method thereof |
| CN106589658A (en) * | 2016-10-25 | 2017-04-26 | 扬州华宇电缆有限公司 | Modified polyvinyl chloride insulating material for flame-retardant cold-resistant high-performance shielding flexible power cable |
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Application publication date: 20151125 |