WO2019109807A1 - 一种轻型非金属阻燃耐火光缆 - Google Patents
一种轻型非金属阻燃耐火光缆 Download PDFInfo
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- WO2019109807A1 WO2019109807A1 PCT/CN2018/116787 CN2018116787W WO2019109807A1 WO 2019109807 A1 WO2019109807 A1 WO 2019109807A1 CN 2018116787 W CN2018116787 W CN 2018116787W WO 2019109807 A1 WO2019109807 A1 WO 2019109807A1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
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- the present disclosure relates to the field of optical communication technologies, and in particular, to a lightweight non-metal flame-retardant refractory optical cable.
- Optical fiber is the core component of the informatization process.
- improving the protection level of optical fiber has become the most important development goal.
- Flame-retardant refractory fiber optic cable is born, and flame-retardant refractory fiber cable can guarantee In the event of a fire, the cable can continue to be used, effectively reducing the loss of property and personnel.
- the existing flame-retardant refractory cable has a low heat-resistance temperature and cannot meet the needs of use.
- the present disclosure provides a lightweight non-metallic flame-retardant refractory fiber optic cable which has the advantage of good fire resistance and can withstand a high temperature of 700-800 °C.
- a light non-metal flame-retardant refractory optical cable comprising: a cable core, a refractory layer coated on the outer periphery of the cable core, a low-smoke halogen-free sheath layer coated on the outer periphery of the refractory layer, and the refractory layer is a double-sided synthetic mica tape or
- the polyimide composite tape and the polyimide composite tape are ceramicized polyimide composite tapes, the polyimide composite tape has a thickness of 0.12-0.2 mm, and the polyimide composite tape has a lap width of 3- 5mm.
- the polyimide composite tape is formed by immersing the polyimide tape through a flame retardant slurry and then baking and curing at 100-180 °C.
- the flame retardant slurry comprises the following parts by weight of the raw materials:
- the double-sided synthetic mica tape comprises mica paper and a polyimide film disposed on both sides of the mica paper, and the mica paper is pasted with a polyimide film by a fireproof adhesive.
- the amount of fireproof glue is 2-5 g/m 2 .
- the thickness of the mica paper is 0.040-0.080 mm
- the thickness of the polyimide film is 0.02-0.04 mm.
- the fireproof glue comprises the following parts by weight:
- the low-smoke, halogen-free jacket layer comprises the following weight percentage components:
- the polyolefin is selected from the group consisting of ethylene-vinyl acetate copolymer and polyethylene.
- the plasticizer is dioctyl phthalate.
- the siloxane is a polydimethylsiloxane.
- the solid flame retardant is nano silica.
- the gas phase flame retardant is selected from at least one of magnesium hydroxide and aluminum hydroxide.
- the special flame retardant is a glass microsphere and a silicone oil composite.
- the cable core comprises: at least one fiber optic group, a non-metallic reinforcing member disposed at a center of the cable core, and a first filling cord having the same outer diameter as the fiber optic group.
- the fiber optic assembly includes a sleeve and an optical fiber disposed within the sleeve, a reinforcement member, and a second filler cord.
- the light non-metal flame-retardant refractory optical cable provided by the present disclosure can effectively improve the fire resistance performance of the optical cable and can withstand the high temperature of 700-800 ° C by using a ceramicized polyimide composite tape or a double-sided synthetic mica tape as a refractory layer;
- the light non-metal flame-retardant refractory cable adopts a non-metal single-sheath structure, and can be applied not only indoors, but also vertically and horizontally, especially when laid in a vertical pipeline.
- Example 1 is a cross-sectional view of a lightweight non-metallic flame-retardant refractory fiber optic cable provided in Example 1 of the present disclosure.
- 1-reinforced member 2-second filled rope; 3-casing; 4-non-metallic reinforcing member; 5-first filled rope; 6-refractory layer; 7-low-smoke halogen-free sheath layer.
- the embodiment discloses a light non-metal flame-retardant refractory optical cable, comprising: a cable core, a refractory layer 6 coated on the outer periphery of the core, a low-smoke halogen-free sheath layer 7 coated on the outer periphery of the refractory layer 6, and fireproof
- the layer 6 is a double-sided synthetic mica tape or a polyimide composite tape
- the polyimide composite tape is a ceramicized polyimide composite tape
- the polyimide composite tape has a thickness of 0.12-0.2 mm
- the polyimide The lap width of the composite tape is 3-5 mm.
- the polyimide composite tape is formed by immersing the polyimide tape through a flame retardant slurry and then baking and curing at 100-180 ° C; more preferably, the flame retardant slurry comprises the following raw materials by weight: 30 - 40 parts of alkyd resin, 25-30 parts of amino resin, 5-8 parts of butyl stearate, 1-3 parts of dolomite powder, 5-10 parts of hydroxyethyl cellulose, 2-5 parts of ammonium polyphosphate, 1-2 parts of isocyanate, 8-15 parts of xylene, and 1-2 parts of an anti-aging agent; further preferably, the anti-aging agent is carbon black.
- the flame retardant slurry comprises the following raw materials by weight: 30 - 40 parts of alkyd resin, 25-30 parts of amino resin, 5-8 parts of butyl stearate, 1-3 parts of dolomite powder, 5-10 parts of hydroxyethyl cellulose, 2-5 parts of ammonium polyphosphate, 1-2 parts of isocyanate
- the light non-metal flame-retardant refractory optical cable provided by the embodiment of the present disclosure is composed of a cable core, a refractory layer 6 and a low-smoke halogen-free sheath layer 7 arranged in order from the inside to the outside, by using a ceramicized polyimide composite tape or double
- the surface synthetic mica tape is used as the refractory layer 6 to improve the fire resistance performance.
- the ceramicized polyimide composite tape is obtained by using a polyimide tape as a substrate, mixing the substrate with the flame retardant slurry, and baking and curing.
- the imide belt has excellent heat insulation performance and can withstand high temperatures of 700-800 ° C, and can be applied to flame retardant refractory cables of different structures.
- the width of the polyimide composite tape is too small, it is easy to cause flame and heat flow when subjected to high temperature, forming a heat passage, and destroying the secondary coating material; if the polyimide composite bandwidth band is too large, The surface of the prepared light non-metal flame-retardant refractory cable is not smooth, so it is necessary to limit the thickness and overlap width of the polyimide composite tape.
- the double-sided synthetic mica tape comprises a mica paper and a polyimide film disposed on both sides of the mica paper, and the mica paper is pasted with the polyimide film by a fireproof glue; preferably, the The amount of the fireproof rubber is 2-5 g/m2; preferably, the thickness of the mica paper is 0.040-0.080 mm, and the thickness of the polyimide film is 0.02-0.04 mm.
- the fireproof glue comprises the following raw materials by weight: 50-60 parts silicone resin, 5-10 parts hydroxyethyl cellulose, 2-5 parts ammonium polyphosphate, 1-2 parts isocyanate, 10-20 parts toluene 5-10 parts of ethyl acetate, 1-3 parts of aluminum hydroxide.
- the double-sided synthetic mica can be prepared by using the fireproof glue-bonded mica paper on both sides of the polyimide film, which can effectively improve the fire resistance of the polyimide film and ensure the high temperature resistance of the prepared light non-metal flame retardant cable. ability.
- the low-smoke halogen-free jacket layer comprises the following components by weight: 45-65% polyolefin, 5-8% plasticizer, 1-3% siloxane, 20-28% gas phase flame retardant, 3-8% solid phase flame retardant, 5-7% special flame retardant and 0.5-2% white carbon black;
- the polyolefin is selected from the group consisting of ethylene-vinyl acetate copolymer and polyethylene
- the plasticizer is dioctyl phthalate; preferably, the siloxane is polydimethylsiloxane; preferably, the solid flame retardant is nano silica; preferably, the The gas phase flame retardant is selected from at least one of magnesium hydroxide and aluminum hydroxide; preferably, the special flame retardant is a glass microsphere and a silicone oil composite.
- the low-smoke halogen-free sheath layer is made of ceramic polyolefin or oxygen barrier with excellent thermal insulation properties. Its main components include matrix polyolefin and a large number of additives.
- the additives mainly include plasticizer, white carbon black and silicon oxide.
- the composite is very light in volume and hollow inside, and has high viscosity. It is easy to design a jacket with different wall thickness specifications. When the special flame retardant burns, the glass microspheres will expand and absorb heat to form a silicate elastomer. When burned at high temperatures, it is prone to ceramization, forming a local oxygen vacuum layer inside, forming a dense protective layer that blocks flame and heat transfer and protects the fiber from high temperatures.
- the cable core comprises: at least one fiber group, a non-metallic reinforcement member 4 disposed at a center of the cable core, and a first filling rope 5 having the same outer diameter as the fiber group; preferably, the fiber group includes the sleeve 3 And an optical fiber, a reinforcing member 1 and a second filling cord 2 disposed inside the sleeve 3.
- the non-metallic reinforcing member 4 and the reinforcing member 1 in the cable core, the structural strength of the light non-metal flame-retardant refractory optical cable can be effectively improved, and the non-metallic reinforcing can be fixed by the first filling rope 5 and the second filling rope 2 provided.
- the piece 4 and the reinforcing member 1 form a stable integral of the core.
- the present embodiment provides a lightweight non-metal flame-retardant refractory optical cable, comprising: a cable core, a refractory layer 6 coated on the outer periphery of the core, and a low-smoke halogen-free coating on the outer periphery of the refractory layer 6.
- the cable core comprises four fiber groups, a non-metallic reinforcing member 4 disposed at the center of the cable core, and two first filling wires 5 having the same outer diameter as the fiber group, the fiber group including the sleeve 3 and the sleeve
- the refractory layer 6 is a polyimide composite tape;
- the polyimide composite tape is a ceramicized polyimide composite tape, and the polyimide composite tape is The polyimide tape is immersed in a flame retardant slurry and then baked and cured at 120 ° C;
- the polyimide composite tape has a thickness of 0.15 mm, and the polyimide composite tape has a lap width of 4 mm;
- the halogen sheath layer 7 comprises the following components by weight: 56% ethylene-vinyl acetate copolymer, 6% dioctyl phthalate, 2% polydimethylsiloxan
- the flame retardant slurry in Example 1 comprises the following parts by weight of raw materials: 30 parts of alkyd resin, 25 parts of amino resin, 5 parts of butyl stearate, 1 part of dolomite powder, 5 parts of hydroxyethyl cellulose, and more than 2 parts. Ammonium polyphosphate, 1 part isocyanate, 8 parts xylene and 1 part carbon black.
- Embodiment 2 provides a lightweight non-metal flame-retardant refractory optical cable which is substantially identical to Embodiment 1, except that the formulation of the flame-retardant slurry, the flame-retardant slurry of Example 2 comprises the following parts by weight: 35 Alkyd resin, 27 parts amino resin, 6 parts butyl stearate, 2 parts dolomite powder, 8 parts hydroxyethyl cellulose, 3 parts ammonium polyphosphate, 1.5 parts isocyanate, 11 parts xylene and 1.5 parts carbon black.
- Embodiment 3 provides a light non-metal flame-retardant refractory optical cable, which is substantially the same as Embodiment 1, except that the formulation of the flame-retardant slurry, the flame-retardant slurry of Example 3 includes the following parts by weight: 40 Alkyd resin, 30 parts amino resin, 8 parts butyl stearate, 3 parts dolomite powder, 10 parts hydroxyethyl cellulose, 5 parts ammonium polyphosphate, 2 parts isocyanate, 15 parts xylene and 2 parts carbon black.
- Embodiment 4 provides a lightweight non-metal flame-retardant refractory optical cable which is substantially identical to that of Embodiment 3, except that the thickness of the polyimide composite tape is 0.2 mm, and the lap width of the polyimide composite tape 4.5mm; the low-smoke halogen-free jacket layer 7 comprises the following components by weight: 60% polyethylene, 5% dioctyl phthalate, 2% polydimethylsiloxane, 10% aluminum hydroxide, 10% magnesium hydroxide, 6% nano silica, 4% glass microspheres, 2% silicone oil composite and 1% silica.
- Embodiment 5 provides a lightweight non-metal flame-retardant refractory optical cable which is substantially identical to Embodiment 1, but whose refractory layer is a double-sided synthetic mica tape, the double-sided synthetic mica tape includes mica paper and is disposed on both sides of the mica paper.
- the polyimide film, the mica paper is pasted with a polyimide film by a fireproof adhesive, the fireproof rubber content is 4 g/m 2 ; the thickness of the mica paper is 0.060 mm, and the thickness of the polyimide film is 0.03 mm,
- the medium fireproof rubber comprises the following raw materials by weight: 50 parts silicone resin, 5 parts hydroxyethyl cellulose, 2 parts ammonium polyphosphate, 1 part isocyanate, 10 parts toluene, 5 parts ethyl acetate and 1 part aluminum hydroxide. .
- Embodiment 6 provides a light non-metal flame-retardant refractory optical cable, which is substantially the same as Embodiment 5, except that the formula of the fireproof adhesive, the fireproof adhesive of the embodiment 6 comprises the following raw materials by weight: 55 parts of silicone resin 8 parts of hydroxyethyl cellulose, 4 parts of ammonium polyphosphate, 1.5 parts of isocyanate, 15 parts of toluene, 8.5 parts of ethyl acetate and 2 parts of aluminum hydroxide.
- Embodiment 7 provides a light non-metal flame-retardant refractory optical cable which is consistent with the structure of Embodiment 5, except that the formulation of the fireproof adhesive, the fireproof adhesive of Embodiment 7 comprises the following raw materials by weight: 60 parts of silicone Resin, 10 parts hydroxyethyl cellulose, 5 parts ammonium polyphosphate, 2 parts isocyanate, 20 parts toluene, 10 parts ethyl acetate and 3 parts aluminum hydroxide.
- Embodiment 8 provides a lightweight non-metallic flame-retardant refractory optical cable which is identical to the structure of Embodiment 5, except that the formulation of the low-smoke halogen-free jacket layer 7 and the low-smoke halogen-free jacket of Embodiment 8 Layer 7 comprises the following components by weight: 55% polyethylene, 5% dioctyl phthalate, 3% polydimethylsiloxane, 20% aluminum hydroxide, 8% nano silica, 4% glass Microspheres, 3% silicone oil composite and 2% silica.
- Embodiment 9 provides a lightweight non-metallic flame-retardant refractory optical cable which is identical to the structure of Embodiment 5, except that the formulation of the low-smoke halogen-free sheath layer 7 and the low-smoke halogen-free sheath of Embodiment 9 Layer 7 comprises the following weight percentage components: 50% polyethylene, 7% dioctyl phthalate, 3% polydimethylsiloxane, 12% aluminum hydroxide, 12% magnesium hydroxide, 8% nanometer two Silica, 3% glass microspheres, 3% silicone oil composite and 2% silica.
- the properties of the light non-metal flame-retardant refractory optical cables prepared in the above Examples 1 to 9 were tested as shown in Table 1, Table 2 and Table 3, wherein Table 1 shows the light non-metallic resistances prepared in the respective examples.
- Table 1 shows the light non-metallic resistances prepared in the respective examples.
- Table 2 is the flame retardant and fire resistance performance of the light non-metal flame retardant refractory fiber optic cable prepared in each embodiment
- Table 3 is the machine of the light non-metal flame retardant refractory fiber optic cable prepared in each embodiment. performance.
- the lightweight non-metal flame-retardant refractory optical cable provided by the embodiments of the present disclosure has excellent fire resistance, water resistance and insulation performance, and has good mechanical properties and can meet various kinds of bad conditions. The use of the environment.
- the light non-metal flame-retardant refractory optical cable provided by the present disclosure adopts a ceramicized polyimide composite tape or a double-sided synthetic mica tape as a refractory layer, thereby effectively improving the fire-resisting performance of the optical cable, and making it resistant to 700-800 ° C. High temperature improves the fire resistance and safety of the cable.
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Abstract
一种轻型非金属阻燃耐火光缆，其包括：缆芯、包覆在缆芯外周的耐火层（6）、包覆在耐火层（6）外周的低烟无卤护套层（7），耐火层（6）为双面合成云母带或者聚酰亚胺复合带，聚酰亚胺复合带为陶瓷化聚酰亚胺复合带，聚酰亚胺复合带的厚度为0.12-0.2mm，聚酰亚胺复合带的搭接宽度为3-5mm。该聚酰亚胺复合带隔热性能优良，能够耐700-800℃高温。
Description
相关申请的交叉引用
本申请要求于2017年12月7日提交中国专利局的申请号为201711287426.X、名称为“一种轻型非金属阻燃耐火光缆”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本公开涉及光通信技术领域，具体涉及一种轻型非金属阻燃耐火光缆。
光纤是信息化进程中最核心的原件，为了使光纤能够广泛的应用于各领域，提高光纤的保护等级已成为最重要的开发目标，阻燃耐火光缆因此而生，阻燃耐火光缆能够保证在发生火灾的情况下光缆可以继续使用，从而有效的减少财物和人员损失。但是现有的阻燃耐火光缆耐热温度较低，不能满足使用需要。
发明内容
为克服上述的至少一个缺点，本公开提供了一种轻型非金属阻燃耐火光缆，其具有耐火性能佳的优点，可以承受700-800℃的高温。
为达到上述目的，本公开的技术方案如下：
一种轻型非金属阻燃耐火光缆，其包括：缆芯、包覆在缆芯外周的耐火层、包覆在耐火层外周的低烟无卤护套层，耐火层为双面合成云母带或者聚酰亚胺复合带，聚酰亚胺复合带为陶瓷化聚酰亚胺复合带，聚酰亚胺复合带的厚度为0.12-0.2mm，聚酰亚胺复合带的搭接宽度为3-5mm。
可选的，聚酰亚胺复合带是将聚酰亚胺带经过阻燃浆料浸泡，随后在100-180℃烘烤固化形成。
可选的，阻燃浆料包括以下重量份的原料：
可选的，双面合成云母带包括云母纸和设置在云母纸两侧的聚酰亚胺薄膜，云母纸通过防火胶粘贴聚酰亚胺薄膜。
可选的，防火胶的用量为2-5g/m
2。
可选的，云母纸的厚度为0.040-0.080mm，聚酰亚胺薄膜的厚度为0.02-0.04mm。
可选的，防火胶包括以下重量份的原料：
可选的，低烟无卤护套层包括以下重量百分比的成分：
可选的，聚烯烃选自于乙烯-乙酸乙烯酯共聚物、聚乙烯中的一种。
可选的，增塑剂为领苯二甲酸二辛酯。
可选的，硅氧烷为聚二甲基硅氧烷。
可选的，固体阻燃剂为纳米二氧化硅。
可选的，气相阻燃剂选自于氢氧化镁、氢氧化铝中的至少一种。
可选的，特种阻燃剂为玻璃微球和硅油复合物。
可选的，缆芯包括：至少一个光纤组、设置在缆芯中心的非金属加强件以及与光 纤组同外径的第一填充绳。
可选的，光纤组包括套管以及设置在套管内部的光纤、加强件和第二填充绳。
与现有的技术相比，本公开的优点和有益效果至少包括：
本公开提供的轻型非金属阻燃耐火光缆通过选用陶瓷化聚酰亚胺复合带或双面合成云母带作为耐火层，能够有效的提高光缆的耐火性能，能够耐700-800℃高温；此外，该轻型非金属阻燃耐火光缆采用非金属单护套结构，不仅能够应用于室内，且既可垂直敷设又可水平敷设，特别是在垂直管道中敷设时优势明显。
为了更清楚地说明本公开实施例技术中的技术方案，下面将对实施例技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本公开实施例1提供的轻型非金属阻燃耐火光缆的剖视图。
其中：1-加强件；2-第二填充绳；3-套管；4-非金属加强件；5-第一填充绳；6-耐火层；7-低烟无卤护套层。
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
本实施例公开了一种轻型非金属阻燃耐火光缆，其包括：缆芯、包覆在缆芯外周的耐火层6、包覆在耐火层6外周的低烟无卤护套层7，耐火层6为双面合成云母带或者聚酰亚胺复合带，聚酰亚胺复合带为陶瓷化聚酰亚胺复合带，聚酰亚胺复合带的厚度为0.12-0.2mm，聚酰亚胺复合带的搭接宽度为3-5mm。优选的，聚酰亚胺复合带是将聚酰亚胺带经过阻燃浆料浸泡，随后在100-180℃烘烤固化形成；更优选的，阻燃浆料包括以下重量份的原料：30-40份醇酸树脂、25-30份氨基树脂、5-8份硬脂酸丁酯、1-3份白云石粉、5-10份羟乙基纤维素、2-5份多聚磷酸铵、1-2份异氰酸酯、8-15份二甲苯和1-2份防老化剂；进一步优选的，防老化剂为炭黑。
本公开实施例提供的轻型非金属阻燃耐火光缆由从内到外依次布置的缆芯、耐火层6和低烟无卤护套层7组成，通过选用陶瓷化聚酰亚胺复合带或双面合成云母带作为耐火层 6来提高耐火性能，其中，陶瓷化聚酰亚胺复合带是选用聚酰亚胺带作为基材，将基材与阻燃浆料混合并且经过烘烤、固化得到，以获得具有陶瓷化外壳的聚酰亚胺复合带，虽然常规的聚酰亚胺带只能够承受400-500℃高温，且不超过5个小时，但是本公开制备得到的陶瓷复合型的聚酰亚胺带隔热性能优良，能够耐700-800℃高温，可以应用于不同结构的阻燃耐火光缆。
此外，如果聚酰亚胺复合带的宽度太小，容易在承受高温时造成火焰和热量串流，形成热量通道，破坏二次涂覆材料；如果聚酰亚胺复合带宽带太大，会使制备得到的轻型非金属阻燃耐火光缆表面出现不光滑的现象，因此需要限定聚酰亚胺复合带的厚度和搭接宽度。
可选的，双面合成云母带包括云母纸和设置在所述云母纸两侧的聚酰亚胺薄膜，所述云母纸通过防火胶粘贴所述聚酰亚胺薄膜；优选的，所述防火胶的用量为2-5g/m2；优选的，云母纸的厚度为0.040-0.080mm，所述聚酰亚胺薄膜的厚度为0.02-0.04mm。优选的，防火胶包括以下重量份的原料：50-60份有机硅树脂、5-10份羟乙基纤维素、2-5份多聚磷酸铵、1-2份异氰酸酯、10-20份甲苯、5-10份乙酸乙酯、1-3份氢氧化铝。通过在聚酰亚胺薄膜两侧分别采用防火胶粘结云母纸制备得到双面合成云母，能够有效的提高聚酰亚胺薄膜的耐火能力，保证制备得到的轻型非金属阻燃耐火光缆耐高温能力。
可选的，低烟无卤护套层包括以下重量百分比的成分：45-65％聚烯烃、5-8％增塑剂、1-3％硅氧烷、20-28％气相阻燃剂、3-8％固相阻燃剂、5-7％特种阻燃剂和0.5-2％白炭黑；优选的，所述聚烯烃选自于乙烯-乙酸乙烯酯共聚物、聚乙烯中的一种；优选的，增塑剂为领苯二甲酸二辛酯；优选的，硅氧烷为聚二甲基硅氧烷；优选的，固体阻燃剂为纳米二氧化硅；优选的，所述气相阻燃剂选自于氢氧化镁、氢氧化铝中的至少一种；优选的，所述特种阻燃剂为玻璃微球和硅油复合物。
低烟无卤护套层选用的具有优异隔热性能的陶瓷化聚烯烃或隔氧料，其主要成分包括基体聚烯烃和大量助剂，助剂主要包括增塑剂，白炭黑，硅氧烷和气相阻燃剂、固相阻燃剂以及特种阻燃剂，其中，固体阻燃剂纳米二氧化硅采用纳米颗粒是为了增加二氧化硅和聚烯烃之间的相容性；硅氧烷主要是通过形成硅酸盐类起到阻燃作用；气相阻燃剂包括氢氧化镁和氢氧化铝，以通过形成的阻燃气体起到阻燃作用；特种阻燃剂是玻璃微球与硅油复合物，体积非常轻且内部为空心，且材料粘度大，容易设计成不同壁厚规格的护套，特种阻燃剂在燃烧时玻璃微球会膨胀吸热，形成硅酸盐化弹性体，在经过高温燃烧时，很容易发生陶瓷化，内部形成局部氧气真空层，形成一层致密的保护层，从而阻隔火焰和热传递，使光纤免受高温破坏。
可选的，缆芯包括：至少一个光纤组、设置在缆芯中心处的非金属加强件4以及与所 述光纤组同外径的第一填充绳5；优选的，光纤组包括套管3以及设置在所述套管3内部的光纤、加强件1和第二填充绳2。通过在缆芯中设置非金属加强件4及加强件1能够有效的提高轻型非金属阻燃耐火光缆的结构强度，并通过设置的第一填充绳5和第二填充绳2能够固定非金属加强件4和加强件1，使缆芯形成稳定的整体。
下面结合具体实施例和对比例对上述方案作进一步说明。
实施例1
如图1所示，本实施例提供了一种轻型非金属阻燃耐火光缆，其包括：缆芯、包覆在缆芯外周的耐火层6、包覆在耐火层6外周的低烟无卤护套层7；缆芯包括四个光纤组、设置在缆芯中心的非金属加强件4以及与光纤组同外径的两个第一填充绳5，光纤组包括套管3以及设置在套管3内部的光纤、加强件1和第二填充绳2；耐火层6为聚酰亚胺复合带；聚酰亚胺复合带为陶瓷化聚酰亚胺复合带，聚酰亚胺复合带是将聚酰亚胺带经过阻燃浆料浸泡，随后在120℃烘烤固化形成；聚酰亚胺复合带的厚度为0.15mm，聚酰亚胺复合带的搭接宽度为4mm；低烟无卤护套层7包括以下重量百分比的成分：56％乙烯-乙酸乙烯酯共聚物、6％领苯二甲酸二辛酯、2％聚二甲基硅氧烷、10％氢氧化铝、15％氢氧化镁、5％纳米二氧化硅、3％玻璃微球、2％硅油复合物和1％白炭黑。实施例1中阻燃浆料包括以下重量份的原料：30份醇酸树脂、25份氨基树脂、5份硬脂酸丁酯、1份白云石粉、5份羟乙基纤维素、2份多聚磷酸铵、1份异氰酸酯、8份二甲苯和1份炭黑。
实施例2
实施例2提供了一种轻型非金属阻燃耐火光缆，其跟实施例1大体一致，不同之处是阻燃浆料的配方，实施例2中阻燃浆料包括以下重量份的原料：35份醇酸树脂、27份氨基树脂、6份硬脂酸丁酯、2份白云石粉、8份羟乙基纤维素、3份多聚磷酸铵、1.5份异氰酸酯、11份二甲苯和1.5份炭黑。
实施例3
实施例3提供了一种轻型非金属阻燃耐火光缆，其跟实施例1大体一致，不同之处是阻燃浆料的配方，实施例3中阻燃浆料包括以下重量份的原料：40份醇酸树脂、30份氨基树脂、8份硬脂酸丁酯、3份白云石粉、10份羟乙基纤维素、5份多聚磷酸铵、2份异氰酸酯、15份二甲苯和2份炭黑。
实施例4
实施例4提供了一种轻型非金属阻燃耐火光缆，其跟实施例3大体一致，不同之处是：聚酰亚胺复合带的厚度为0.2mm，聚酰亚胺复合带的搭接宽度为4.5mm；低烟无卤护套层7包括以下重量百分比的成分：60％聚乙烯、5％领苯二甲酸二辛酯、2％聚二甲基硅氧烷、10％氢氧化铝、10％氢氧化镁、6％纳米二氧化硅、4％玻璃微球、2％硅油复合物和1％白 炭黑。
实施例5
实施例5提供了一种轻型非金属阻燃耐火光缆，其跟实施例1大体一致，但是，其耐火层为双面合成云母带，双面合成云母带包括云母纸和设置在云母纸两侧的聚酰亚胺薄膜，云母纸通过防火胶粘贴聚酰亚胺薄膜，防火胶含量为4g/m
2；云母纸的厚度为0.060mm，聚酰亚胺薄膜厚度为0.03mm，实施例5中防火胶包括以下重量份的原料：50份有机硅树脂、5份羟乙基纤维素、2份多聚磷酸铵、1份异氰酸酯、10份甲苯、5份乙酸乙酯和1份氢氧化铝。
实施例6
实施例6提供了一种轻型非金属阻燃耐火光缆，其跟实施例5大体一致，不同之处是防火胶的配方，实施例6中防火胶包括以下重量份的原料：55份有机硅树脂、8份羟乙基纤维素、4份多聚磷酸铵、1.5份异氰酸酯、15份甲苯、8.5份乙酸乙酯和2份氢氧化铝。
实施例7
实施例7提供了一种轻型非金属阻燃耐火光缆，其跟实施例5的结构一致，不同之处是防火胶的配方，实施例7中防火胶包括以下重量份的原料：60份有机硅树脂、10份羟乙基纤维素、5份多聚磷酸铵、2份异氰酸酯、20份甲苯、10份乙酸乙酯和3份氢氧化铝。
实施例8
实施例8提供了一种轻型非金属阻燃耐火光缆，其跟实施例5中的结构一致，不同之处是低烟无卤护套层7的配方，实施例8中低烟无卤护套层7包括以下重量百分比的成分：55％聚乙烯、5％领苯二甲酸二辛酯、3％聚二甲基硅氧烷、20％氢氧化铝、8％纳米二氧化硅、4％玻璃微球、3％硅油复合物和2％白炭黑。
实施例9
实施例9提供了一种轻型非金属阻燃耐火光缆，其跟实施例5中的结构一致，不同之处是低烟无卤护套层7的配方，实施例9中低烟无卤护套层7包括以下重量百分比的成分：50％聚乙烯、7％领苯二甲酸二辛酯、3％聚二甲基硅氧烷、12％氢氧化铝、12％氢氧化镁、8％纳米二氧化硅、3％玻璃微球、3％硅油复合物和2％白炭黑。
对上述实施例1至实施例9制备得到的轻型非金属阻燃耐火光缆的性能进行检测如表1、表2和表3所示，其中，表1为各个实施例制备得到的轻型非金属阻燃耐火光缆的温度循环实验数据；表2为各个实施例制备得到的轻型非金属阻燃耐火光缆的阻燃和耐火性能；表3为各个实施例制备得到的轻型非金属阻燃耐火光缆的机械性能。
表1本公开实施例提供的轻型非金属阻燃耐火光缆的温度循环实验数据
表2本公开实施例提供的轻型非金属阻燃耐火光缆的阻燃和耐火性能
表3本公开实施例提供的轻型非金属阻燃耐火光缆的机械性能
由上述表1、表2和表3可以看出，本公开实施例提供的轻型非金属阻燃耐火光缆具有优异的耐火、耐水和绝缘性能，且其具有良好的机械性能，能够满足各种恶劣环境下的使用需求。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本公开。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本公开的精神或范围的情况下，在其它实施例中实现。因此，本公开将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。
本公开提供的轻型非金属阻燃耐火光缆采用陶瓷化聚酰亚胺复合带或双面合成云母带作为耐火层，从而有效的提高了光缆的耐火隔热性能，使其能够耐700-800℃高温，提高了光缆的耐火和安全性能。
Claims (16)
- 一种轻型非金属阻燃耐火光缆，其包括：缆芯、包覆在所述缆芯外周的耐火层、包覆在所述耐火层外周的低烟无卤护套层，其特征在于，所述耐火层为双面合成云母带或者聚酰亚胺复合带，所述聚酰亚胺复合带为陶瓷化聚酰亚胺复合带，所述聚酰亚胺复合带的厚度为0.12-0.2mm，所述聚酰亚胺复合带的搭接宽度为3-5mm。
- 根据权利要求1所述的轻型非金属阻燃耐火光缆，其特征在于，所述聚酰亚胺复合带是将聚酰亚胺带经过阻燃浆料浸泡，随后在100-180℃烘烤固化形成。
- 根据权利要求2所述的轻型非金属阻燃耐火光缆，其特征在于，所述阻燃浆料包括以下重量份的原料：
- 根据权利要求1至3中任一项所述的轻型非金属阻燃耐火光缆，其特征在于，所述双面合成云母带包括云母纸和设置在所述云母纸两侧的聚酰亚胺薄膜，所述云母纸通过防火胶粘贴所述聚酰亚胺薄膜。
- 根据权利要求4所述的轻型非金属阻燃耐火光缆，其特征在于，所述防火胶的用量为2-5g/m 2。
- 根据权利要求4或5所述的轻型非金属阻燃耐火光缆，其特征在于，所述云母纸的厚度为0.040-0.080mm，所述聚酰亚胺薄膜的厚度为0.02-0.04mm。
- 根据权利要求4至6中任一项所述的轻型非金属阻燃耐火光缆，其特征在于，所述防火胶包括以下重量份的原料：
- 根据权利要求1至7中任一项所述的轻型非金属阻燃耐火光缆，其特征在于，所述低烟无卤护套层包括以下重量百分比的成分：
- 根据权利要求8中任一项所述的轻型非金属阻燃耐火光缆，其特征在于，所述聚烯烃选自于乙烯-乙酸乙烯酯共聚物、聚乙烯中的一种。
- 根据权利要求8或9所述的轻型非金属阻燃耐火光缆，其特征在于，增塑剂为领苯二甲酸二辛酯。
- 根据权利要求8至10中任一项所述的轻型非金属阻燃耐火光缆，其特征在于，硅氧烷为聚二甲基硅氧烷。
- 根据权利要求8至11中任一项所述的轻型非金属阻燃耐火光缆，其特征在于，固体阻燃剂为纳米二氧化硅。
- 根据权利要求8至12中任一项所述的轻型非金属阻燃耐火光缆，其特征在于，所述气相阻燃剂选自于氢氧化镁、氢氧化铝中的至少一种。
- 根据权利要求8至13中任一项所述的轻型非金属阻燃耐火光缆，其特征在于，所述特种阻燃剂为玻璃微球和硅油复合物。
- 根据权利要求1至14中任一项所述的轻型非金属阻燃耐火光缆，其特征在于，所述缆芯包括：至少一个光纤组、设置在所述缆芯中心的非金属加强件以及与所述光纤组同外径的第一填充绳。
- 根据权利要求15所述的轻型非金属阻燃耐火光缆，其特征在于，所述光纤组包括套管以及设置在所述套管内部的光纤、加强件和第二填充绳。
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107765384A (zh) | 2018-03-06 |
| EP3722851A1 (en) | 2020-10-14 |
| EP3722851B1 (en) | 2022-09-07 |
| EP3722851A4 (en) | 2021-01-06 |
| CN107765384B (zh) | 2019-10-29 |
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