CN1508925A - A bushing for buried medium and high voltage power cables and its production method - Google Patents
A bushing for buried medium and high voltage power cables and its production method Download PDFInfo
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- CN1508925A CN1508925A CNA021485658A CN02148565A CN1508925A CN 1508925 A CN1508925 A CN 1508925A CN A021485658 A CNA021485658 A CN A021485658A CN 02148565 A CN02148565 A CN 02148565A CN 1508925 A CN1508925 A CN 1508925A
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- polypropylene
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 43
- 239000004743 Polypropylene Substances 0.000 claims abstract description 41
- -1 polypropylene Polymers 0.000 claims abstract description 41
- 229920001155 polypropylene Polymers 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 29
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 27
- 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 claims abstract description 20
- 239000003063 flame retardant Substances 0.000 claims abstract description 12
- 229920001971 elastomer Polymers 0.000 claims abstract description 11
- 239000000806 elastomer Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000000049 pigment Substances 0.000 claims abstract description 3
- 229920002943 EPDM rubber Polymers 0.000 claims description 7
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 7
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 7
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 229920003051 synthetic elastomer Polymers 0.000 claims description 4
- 239000005061 synthetic rubber Substances 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
- 238000005453 pelletization Methods 0.000 claims description 2
- 239000010456 wollastonite Substances 0.000 claims description 2
- 229910052882 wollastonite Inorganic materials 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 6
- 238000001125 extrusion Methods 0.000 claims 2
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims 1
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical compound C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims 1
- 239000004615 ingredient Substances 0.000 claims 1
- 239000000178 monomer Substances 0.000 claims 1
- 238000009740 moulding (composite fabrication) Methods 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 17
- 239000011256 inorganic filler Substances 0.000 abstract description 17
- 229910003475 inorganic filler Inorganic materials 0.000 abstract description 17
- 150000001408 amides Chemical class 0.000 abstract description 8
- 239000008187 granular material Substances 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 description 18
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 6
- 229910052901 montmorillonite Inorganic materials 0.000 description 6
- 239000008188 pellet Substances 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- FPSFKBGHBCHTOE-UHFFFAOYSA-N sodium 3-hydroxy-4-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)diazenyl]naphthalene-1-sulfonic acid Chemical compound [Na+].O=C1C(N=NC=2C3=CC=CC=C3C(=CC=2O)S(O)(=O)=O)C(C)=NN1C1=CC=CC=C1 FPSFKBGHBCHTOE-UHFFFAOYSA-N 0.000 description 5
- 239000004801 Chlorinated PVC Substances 0.000 description 4
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 description 4
- 150000001805 chlorine compounds Chemical class 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 229920005629 polypropylene homopolymer Polymers 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- ORYGKUIDIMIRNN-UHFFFAOYSA-N 1,2,3,4-tetrabromo-5-(2,3,4,5-tetrabromophenoxy)benzene Chemical compound BrC1=C(Br)C(Br)=CC(OC=2C(=C(Br)C(Br)=C(Br)C=2)Br)=C1Br ORYGKUIDIMIRNN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000012796 inorganic flame retardant Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92561—Time, e.g. start, termination, duration or interruption
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
本发明涉及埋地式中高压电力电缆用套管及其生产方法技术领域。其为方便生产制造而开发的。其特征包括以下组分：聚丙烯100、弹性体6－12、阻燃剂15－40、纳米碳酸钙4－10、复合无机填料10－20、介酸酰胺0.1－1、颜料0.1－2，以上以聚丙烯的重量为基准。其将配方中物料在高速混合机内混合8－12分钟，然后将混合料在双螺杆挤出机内挤出造粒，制得了电力电缆护套管用的纳米碳酸钙混杂改性阻燃聚丙烯专用将配方料，其中双螺杆挤出机料筒温度控制在180℃～220℃，螺杆转速控制在400～1200转/分钟，再将该材料去拉管而得到套管，该生产方法具有简单易行、对生产设备要求低、工艺稳定等优点，而材料具有高刚性、阻燃、高强度的特点，适合在电缆护套管上应用。The invention relates to the technical field of bushings for buried medium and high voltage power cables and production methods thereof. It was developed for the convenience of manufacturing. Its features include the following components: polypropylene 100, elastomer 6-12, flame retardant 15-40, nanometer calcium carbonate 4-10, composite inorganic filler 10-20, interacid amide 0.1-1, pigment 0.1-2, The above is based on the weight of polypropylene. It mixes the materials in the formula in a high-speed mixer for 8-12 minutes, and then extrudes the mixed materials in a twin-screw extruder to make granules to prepare nano-calcium carbonate hybrid modified flame-retardant polypropylene for power cable sheathing tubes. Specially formulated materials, in which the barrel temperature of the twin-screw extruder is controlled at 180°C-220°C, the screw speed is controlled at 400-1200 rpm, and then the material is removed from the tube to obtain a sleeve. This production method is simple It has the advantages of easy operation, low requirements for production equipment, and stable process, while the material has the characteristics of high rigidity, flame retardancy, and high strength, and is suitable for application in cable sheathing tubes.
Description
技术领域technical field
本发明涉及一种塑料改性、特别属于纳米材料混杂改性聚丙烯和聚丙烯阻燃化改性后材料来生产埋地式中高压电力电缆用套管技术领域和其相关的生产方法技术领域。The invention relates to a kind of plastic modification, especially belongs to the technical field of nano-material hybrid modified polypropylene and polypropylene flame-retardant modified material to produce bushings for buried medium and high voltage power cables and the related production method technical field .
背景技术Background technique
目前的热塑性电力电缆护套管的主要原料为氯化聚氯乙烯和聚氯乙烯复配物及稳定剂等其它助剂(参见中国专利文献CN1081382C)。采用氯化聚氯乙烯和聚氯乙烯复配物生产电缆护套管存在热稳定性差、分解物腐蚀金属、护套管密度大、生产过程中对设备要求高等缺点，因此目前只有少数有进口设备的厂家有能力生产，而国产设备由于控制精度差，无法生产氯化聚氯乙烯和聚氯乙烯复配物为原料的电力电缆护套管。而在聚丙烯改性领域，仅用弹性体和超细微米级无机填料或纳米级填料改性的聚丙烯无法满足电缆护套管的耐压、阻燃、耐冲击、密度低等综合要求(参见中国专利文献CN1211591A，CN1063199C，CN1286278A、01132320.5)。中国专利CN1091122C公开了一种动态交联的三元乙丙橡胶/聚丙烯热塑性性弹性体，由于采用了动态交联技术，制得的材料是以乙丙橡胶为基体的具有橡胶性质的热塑性弹性体，其以乙丙橡胶为主，而聚丙烯为辅的，所以改性后材料的特性偏向于柔性，只能用来做电缆的包皮，也不能满足本发明所涉及的以聚丙烯塑料为基体的电缆专用料的高刚性、阻燃、高强度等的要求，难以在埋地式中高压电力电缆用套管方面得到良好的应用。The main raw materials of the current thermoplastic power cable sheath are chlorinated polyvinyl chloride, polyvinyl chloride compound and other additives such as stabilizers (see Chinese patent document CN1081382C). The use of chlorinated polyvinyl chloride and polyvinyl chloride compound to produce cable sheath tubes has disadvantages such as poor thermal stability, metal corrosion by decomposition products, high sheath tube density, and high equipment requirements in the production process. Therefore, only a few imported equipment are currently available. Some manufacturers have the ability to produce, but domestic equipment cannot produce chlorinated polyvinyl chloride and polyvinyl chloride compound as raw materials for power cable sheathing tubes due to poor control accuracy. In the field of polypropylene modification, polypropylene modified only with elastomers and ultra-fine micron-scale inorganic fillers or nano-scale fillers cannot meet the comprehensive requirements of cable sheathing such as pressure resistance, flame retardancy, impact resistance, and low density ( See Chinese patent documents CN1211591A, CN1063199C, CN1286278A, 01132320.5). Chinese patent CN1091122C discloses a dynamically cross-linked EPDM/PP thermoplastic elastomer. Due to the adoption of dynamic cross-linking technology, the obtained material is a thermoplastic elastomer with rubber properties based on EPDM. body, which is mainly made of ethylene-propylene rubber and supplemented by polypropylene, so the characteristics of the modified material tend to be flexible, and can only be used as the sheath of the cable, and cannot meet the requirements of the present invention. The high rigidity, flame retardancy, high strength and other requirements of the cable special material of the base body make it difficult to get a good application in the bushing for buried medium and high voltage power cables.
发明内容Contents of the invention
本发明所要解决的首要技术问题是根据电力电缆护套管的使用和施工要求、提供一种埋地式中高压电力电缆用套管，利用该专用料生产的电力电缆护套管具有工艺稳定、对生产设备要求低、耐压高、抗冲击、阻燃、刚性高、密度低等优点，并完全符合电力电缆护套管的生产、施工和使用要求。The primary technical problem to be solved by the present invention is to provide a buried medium and high voltage power cable bushing according to the use and construction requirements of the power cable sheath tube. The power cable sheath tube produced by using this special material has a stable process, It has the advantages of low requirements on production equipment, high pressure resistance, impact resistance, flame retardancy, high rigidity, and low density, and fully meets the production, construction and use requirements of power cable sheathing tubes.
本发明所要解决的再一个技术问题是提供一种简单易行、对生产设备要求低、工艺稳定的生产上述套管的生产方法。Another technical problem to be solved by the present invention is to provide a production method for producing the above casing which is simple, has low requirements on production equipment, and has a stable process.
本发明解决上述首要技术问题所采用的技术方案为：该种埋地式中高压电力电缆用套管，其特征在于该套管采用纳米改性聚丙烯专用料，其有以下组分：聚丙烯100、弹性体6-12、阻燃剂15-40、纳米碳酸钙4-10、复合无机填料10-20、介酸酰胺0.1-1、颜料0.1-2、以上以聚丙烯的重量为基准。The technical solution adopted by the present invention to solve the above-mentioned primary technical problems is: the bushing for buried medium and high voltage power cables, which is characterized in that the bushing is made of nano-modified polypropylene special material, which has the following components: polypropylene 100. Elastomer 6-12, flame retardant 15-40, nano calcium carbonate 4-10, composite inorganic filler 10-20, interacid amide 0.1-1, pigment 0.1-2, the above is based on the weight of polypropylene.
上述弹性体优选二元乙丙橡胶EPR、三元乙丙橡胶EPDM、苯乙烯-丁二烯-苯乙烯合成橡胶SBS、苯乙烯-乙烯-丁二烯-苯乙烯合成橡胶SEBS、辛烯-乙烯弹性体POE、乙烯-醋酸乙烯弹性体EVA中的至少一种。The above-mentioned elastomers are preferably binary ethylene-propylene rubber EPR, tertiary ethylene-propylene rubber EPDM, styrene-butadiene-styrene synthetic rubber SBS, styrene-ethylene-butadiene-styrene synthetic rubber SEBS, octene-ethylene At least one of elastomer POE and ethylene-vinyl acetate elastomer EVA.
上述纳米碳酸钙粒子的D90≤100纳米。The D 90 of the above-mentioned nanometer calcium carbonate particles is ≤100 nanometers.
上述复合无机填料优选超细碳酸钙、蒙脱土、云母、硅灰石、滑石粉、硫酸钡、氢氧化铝、氢氧化镁的至少二种复配物。The above-mentioned composite inorganic filler is preferably at least two composites of ultrafine calcium carbonate, montmorillonite, mica, wollastonite, talcum powder, barium sulfate, aluminum hydroxide, and magnesium hydroxide.
上述聚丙烯优选均聚聚丙烯、共聚聚丙烯中的至少一种，聚丙烯的熔体流动速率MFR≤3克/10分钟。The above-mentioned polypropylene is preferably at least one of homopolypropylene and copolymerized polypropylene, and the melt flow rate of polypropylene is MFR≤3 g/10 minutes.
本发明解决上述再一个技术问题所采用的技术方案为：按照上述的配比配料，将配方中物料在高速混合机内混合8-12分钟，然后将混合料在双螺杆挤出机内挤出造粒，制得了电缆护套管用的纳米碳酸钙混杂改性阻燃聚丙烯专用料，其中双螺杆挤出机料筒温度控制在180℃～220℃，螺杆转速控制在400～1200转/分钟，然后将专用料单螺杆挤出机熔化挤出，通过口模成型、冷却定型得到电缆护套管，其单螺杆挤出机的料筒温度控制在175℃～200℃，螺杆转速控制在40～120转/分钟，口模温度控制在175℃～190℃。The technical scheme adopted by the present invention to solve the above technical problem is as follows: according to the above-mentioned proportioning, the materials in the formula are mixed in a high-speed mixer for 8-12 minutes, and then the mixture is extruded in a twin-screw extruder Pelletizing to produce nano-calcium carbonate hybrid modified flame-retardant polypropylene special material for cable sheathing tubes, in which the barrel temperature of the twin-screw extruder is controlled at 180°C-220°C, and the screw speed is controlled at 400-1200 rpm , and then melt and extrude the special material single-screw extruder, and obtain the cable sheath tube through die molding, cooling and shaping. The barrel temperature of the single-screw extruder is controlled at 175 ° C ~ 200 ° C, and the screw speed is controlled at 40 ～120 rev/min, the die temperature is controlled at 175℃～190℃.
与目前用于生产电缆护套管的原料氯化聚氯乙烯和聚氯乙烯复配物相比，由于本发明在配方中加入了弹性体、纳米碳酸钙、复合无机填料和阻燃剂等助剂，使护套管具有加工稳定性好、加工工艺简单、护套管耐冲击、阻燃、耐高压、密度低、耐热等优点。本发明的护套管的典型性能如下：
本发明提供的生产方法，具有简单易行、对生产设备要求低、工艺稳定等优点和效果，适合在生产该专用套管上推广使用。The production method provided by the invention has the advantages and effects of simplicity, low requirements on production equipment, stable process, etc., and is suitable for popularization and use in the production of the special casing.
具体实施方式Detailed ways
以下结合实施例对发明作进一步详细描述，有必要在此指出的是以下实施例只用于对本发明进一步说明，不能理解为对本发明保护范围的限制，该领域的技术熟练人员可以根据上述本发明内容对本发明作出一些非本质的改进和调整。The invention is described in further detail below in conjunction with the examples, it is necessary to point out that the following examples are only used to further illustrate the present invention, and can not be interpreted as limiting the protection scope of the present invention, those skilled in the art can according to the above-mentioned present invention Contents Some non-essential improvements and adjustments are made to the present invention.
实施例1：Example 1:
按如下配比配料将配方中物料在高速混合机内混合10分钟，然后将混合料在双螺杆挤出机内挤出造粒制得电力电缆套管用的纳米碳酸钙混杂改性阻燃聚丙烯专用料，双螺杆挤出机料筒温度控制在200℃，螺杆转速控制在800转/分钟。将粒料加到单螺杆挤出机内，在挤出机内熔融塑化，通过口模定型，再进行冷却、切割，即制得本发明涉及的护套管，单螺杆挤出机的料筒温度控制在190℃，螺杆转速控制在80转/分钟，口模温度控制在185℃。本实施例得到的护套管外径110毫米，壁厚5毫米，性能达到本发明中护套管的典型性能要求。其中配比为Mix the materials in the formula in a high-speed mixer for 10 minutes according to the following proportions, and then extrude and granulate the mixture in a twin-screw extruder to obtain nano-calcium carbonate hybrid modified flame-retardant polypropylene for power cable sleeves For special materials, the barrel temperature of the twin-screw extruder is controlled at 200°C, and the screw speed is controlled at 800 rpm. The pellets are added to the single-screw extruder, melted and plasticized in the extruder, passed through the die to shape, and then cooled and cut to obtain the sheath tube involved in the present invention, the material of the single-screw extruder The barrel temperature was controlled at 190°C, the screw speed was controlled at 80 rpm, and the die temperature was controlled at 185°C. The sheath tube obtained in this embodiment has an outer diameter of 110 mm and a wall thickness of 5 mm, and its performance meets the typical performance requirements of the sheath tube of the present invention. Among them, the ratio is
聚丙烯 100Polypropylene 100
EPDM 9EPDM 9
阻燃剂八溴联苯醚 30Flame retardant octabromodiphenyl ether 30
纳米碳酸钙 7Nano calcium carbonate 7
复合无机填料 15Composite inorganic filler 15
介酸酰胺 0.5Interacid amide 0.5
钼铬红 1.0Molybdenum chrome red 1.0
以上以聚丙烯的重量为基准。The above is based on the weight of polypropylene.
复合无机填料云母和超细碳酸钙粒子，二者配比为1∶1。Composite inorganic filler mica and superfine calcium carbonate particles, the ratio of the two is 1:1.
实施例2Example 2
按如下配比配料将配方中物料在高速混合机内混合12分钟，然后将混合料在双螺杆挤出机内挤出造粒制得电力电缆套管用的纳米碳酸钙混杂改性阻燃聚丙烯专用料，双螺杆挤出机料筒温度控制在180℃，螺杆转速控制在400转/分钟。粒料加到单螺杆挤出机内，在挤出机内熔融塑化，通过口模定型，再进行冷却、切割，即制得本发明涉及的护套管，单螺杆挤出机的料筒温度控制在175℃，螺杆转速控制在120转/分钟，口模温度控制在190℃。本实施例的护套管外径90毫米，壁厚4毫米，性能达到本发明中护套管的典型性能要求。其配比为Mix the materials in the formula in a high-speed mixer for 12 minutes according to the following proportions, and then extrude and granulate the mixture in a twin-screw extruder to obtain nano-calcium carbonate hybrid modified flame-retardant polypropylene for power cable sleeves For special materials, the barrel temperature of the twin-screw extruder is controlled at 180°C, and the screw speed is controlled at 400 rpm. The pellets are added to the single-screw extruder, melted and plasticized in the extruder, passed through the die for shaping, and then cooled and cut to obtain the sheath tube involved in the present invention and the barrel of the single-screw extruder The temperature is controlled at 175°C, the screw speed is controlled at 120 rpm, and the die temperature is controlled at 190°C. The sheath tube in this embodiment has an outer diameter of 90 mm and a wall thickness of 4 mm, and its performance meets the typical performance requirements of the sheath tube of the present invention. Its ratio is
聚丙烯 100Polypropylene 100
EPDM 12EPDM 12
阻燃剂 15Flame retardant 15
纳米碳酸钙 10Nano calcium carbonate 10
复合无机填料 20Composite inorganic filler 20
介酸酰胺 0.5Interacid amide 0.5
钼铬红 1.0Molybdenum chrome red 1.0
以上以聚丙烯的重量为基准。The above is based on the weight of polypropylene.
复合无机填料为蒙脱土和氢氧化铝的混合物，二者配比为1∶1。The composite inorganic filler is a mixture of montmorillonite and aluminum hydroxide, and the ratio of the two is 1:1.
实施例3Example 3
按如下配比配料将配方中物料在高速混合机内混合10分钟，然后将混合料在双螺杆挤出机内挤出造粒制得电力电缆套管用的纳米碳酸钙混杂改性阻燃聚丙烯专用料，双螺杆挤出机料筒温度控制在200℃，螺杆转速控制在800转/分钟。粒料加到单螺杆挤出机内，在挤出机内熔融塑化，通过口模定型，再进行冷却、切割，即制得本发明涉及的护套管，单螺杆挤出机的料筒温度控制在200℃，螺杆转速控制在40转/分钟，口模温度控制在175℃。本实施例得到的护套管外径160毫米，壁厚5毫米，性能达到本发明中护套管的典型性能要求。Mix the materials in the formula in a high-speed mixer for 10 minutes according to the following proportions, and then extrude and granulate the mixture in a twin-screw extruder to obtain nano-calcium carbonate hybrid modified flame-retardant polypropylene for power cable sleeves For special materials, the barrel temperature of the twin-screw extruder is controlled at 200°C, and the screw speed is controlled at 800 rpm. The pellets are added to the single-screw extruder, melted and plasticized in the extruder, passed through the die for shaping, and then cooled and cut to obtain the sheath tube involved in the present invention and the barrel of the single-screw extruder The temperature is controlled at 200°C, the screw speed is controlled at 40 rpm, and the die temperature is controlled at 175°C. The sheath tube obtained in this embodiment has an outer diameter of 160 mm and a wall thickness of 5 mm, and its performance meets the typical performance requirements of the sheath tube of the present invention.
聚丙烯 100Polypropylene 100
EPR 6EPR 6
阻燃剂 15Flame retardant 15
纳米碳酸钙 4Nano calcium carbonate 4
复合无机填料 10Composite inorganic filler 10
介酸酰胺 0.5Interacid amide 0.5
钼铬红 1.0Molybdenum chrome red 1.0
以上以聚丙烯的重量为基准。The above is based on the weight of polypropylene.
复合无机填料为蒙脱土、氢氧化铝的混合物，二者配比为1∶1。The composite inorganic filler is a mixture of montmorillonite and aluminum hydroxide, and the ratio of the two is 1:1.
实施例4Example 4
按如下配比配料将配方中物料在高速混合机内混合10分钟，然后将混合料在双螺杆挤出机内挤出造粒制得电力电缆套管用的纳米碳酸钙混杂改性阻燃聚丙烯专用料，双螺杆挤出机料筒温度控制在200℃，螺杆转速控制在1000转/分钟。粒料加到单螺杆挤出机内，在挤出机内熔融塑化，通过口模定型，再进行冷却、切割，即制得本发明涉及的护套管，单螺杆挤出机的料筒温度控制在185℃，螺杆转速控制在80转/分钟，口模温度控制在185℃。本实施例得到的护套管外径225毫米，壁厚9.5毫米，性能达到本发明中护套管的典型性能要求。Mix the materials in the formula in a high-speed mixer for 10 minutes according to the following proportions, and then extrude and granulate the mixture in a twin-screw extruder to obtain nano-calcium carbonate hybrid modified flame-retardant polypropylene for power cable sleeves For special materials, the barrel temperature of the twin-screw extruder is controlled at 200°C, and the screw speed is controlled at 1000 rpm. The pellets are added to the single-screw extruder, melted and plasticized in the extruder, passed through the die for shaping, and then cooled and cut to obtain the sheath tube involved in the present invention and the barrel of the single-screw extruder The temperature is controlled at 185°C, the screw speed is controlled at 80 rpm, and the die temperature is controlled at 185°C. The sheath tube obtained in this embodiment has an outer diameter of 225 mm and a wall thickness of 9.5 mm, and its performance meets the typical performance requirements of the sheath tube of the present invention.
聚丙烯 100Polypropylene 100
SEBS 10SEBS 10
阻燃剂 20Flame retardant 20
纳米碳酸钙 8Nano calcium carbonate 8
复合无机填料 15Composite inorganic filler 15
介酸酰胺 0.5Interacid amide 0.5
碳黑 1.0Carbon black 1.0
复合无机填料为蒙脱土和氢氧化铝的混合物，二者配比为1∶1，The composite inorganic filler is a mixture of montmorillonite and aluminum hydroxide, and the ratio of the two is 1:1.
其中聚丙烯为均聚聚丙烯，聚丙烯的熔体流动速率MFR≤3克/10分钟，纳米碳酸钙粒子的D90≤100纳米。Wherein the polypropylene is a homopolypropylene, the melt flow rate of the polypropylene is MFR≤3g/10min, and the D 90 of the nanometer calcium carbonate particles is ≤100nm.
实施例5Example 5
按如下配比配料将配方中物料在高速混合机内混合8分钟，然后将混合料在双螺杆挤出机内挤出造粒制得电力电缆套管用的纳米碳酸钙混杂改性阻燃聚丙烯专用料，双螺杆挤出机料筒温度控制在220℃，螺杆转速控制在1200转/分钟。粒料加到单螺杆挤出机内，在挤出机内熔融塑化，通过口模定型，再进行冷却、切割，即制得本发明涉及的护套管，单螺杆挤出机的料筒温度控制在180℃，螺杆转速控制在80转/分钟，口模温度控制在185℃。本实施例得到护套管外径90毫米，壁厚4毫米，性能达到本发明中护套管的典型性能要求。Mix the materials in the formula in a high-speed mixer for 8 minutes according to the following proportions, and then extrude and granulate the mixture in a twin-screw extruder to obtain nano-calcium carbonate hybrid modified flame-retardant polypropylene for power cable sleeves For special materials, the barrel temperature of the twin-screw extruder is controlled at 220°C, and the screw speed is controlled at 1200 rpm. The pellets are added to the single-screw extruder, melted and plasticized in the extruder, passed through the die for shaping, and then cooled and cut to obtain the sheath tube involved in the present invention and the barrel of the single-screw extruder The temperature is controlled at 180°C, the screw speed is controlled at 80 rpm, and the die temperature is controlled at 185°C. In this embodiment, the sheath tube with an outer diameter of 90 mm and a wall thickness of 4 mm can meet the typical performance requirements of the sheath tube of the present invention.
聚丙烯 100Polypropylene 100
SEBS 8SEBS 8
EPR 2EPR 2
阻燃剂 40Flame retardant 40
纳米碳酸钙 8Nano calcium carbonate 8
复合无机填料 15Composite inorganic filler 15
介酸酰胺 1Interacid amide 1
钼铬红 0.1Molybdenum chrome red 0.1
复合无机填料为蒙脱土、氢氧化铝、氢氧化镁的混合物，三者配比为1∶1∶1。The composite inorganic filler is a mixture of montmorillonite, aluminum hydroxide and magnesium hydroxide, and the ratio of the three is 1:1:1.
其中聚丙烯为均聚聚丙烯，聚丙烯的熔体流动速率MFR≤3克/10分钟，纳米碳酸钙粒子的D90≤100纳米。Wherein the polypropylene is a homopolypropylene, the melt flow rate of the polypropylene is MFR≤3g/10min, and the D 90 of the nanometer calcium carbonate particles is ≤100nm.
实施例6Example 6
按如下配比配料将配方中物料在高速混合机内混合10分钟，然后将混合料在双螺杆挤出机内挤出造粒制得电力电缆套管用的纳米碳酸钙混杂改性阻燃聚丙烯专用料，双螺杆挤出机料筒温度控制在200℃，螺杆转速控制在1000转/分钟。粒料加到单螺杆挤出机内，在挤出机内熔融塑化，通过口模定型，再进行冷却、切割，即制得本发明涉及的护套管，单螺杆挤出机的料筒温度控制在200℃，螺杆转速控制在40转/分钟，口模温度控制在175℃。本实施例得到的护套管外径125毫米，壁厚5毫米，性能达到本发明中护套管的典型性能要求。Mix the materials in the formula in a high-speed mixer for 10 minutes according to the following proportions, and then extrude and granulate the mixture in a twin-screw extruder to obtain nano-calcium carbonate hybrid modified flame-retardant polypropylene for power cable sleeves For special materials, the barrel temperature of the twin-screw extruder is controlled at 200°C, and the screw speed is controlled at 1000 rpm. The pellets are added to the single-screw extruder, melted and plasticized in the extruder, passed through the die for shaping, and then cooled and cut to obtain the sheath tube involved in the present invention and the barrel of the single-screw extruder The temperature is controlled at 200°C, the screw speed is controlled at 40 rpm, and the die temperature is controlled at 175°C. The sheath tube obtained in this embodiment has an outer diameter of 125 mm and a wall thickness of 5 mm, and its performance meets the typical performance requirements of the sheath tube of the present invention.
聚丙烯 100Polypropylene 100
SEBS 10SEBS 10
阻燃剂 20Flame retardant 20
纳米碳酸钙 8Nano calcium carbonate 8
复合无机填料 15Composite inorganic filler 15
介酸酰胺 0.1Interacid amide 0.1
钼铬红 2.0Molybdenum chrome red 2.0
复合无机填料为蒙脱土和氢氧化铝的混合物，二者配比为1∶1，The composite inorganic filler is a mixture of montmorillonite and aluminum hydroxide, and the ratio of the two is 1:1.
其中聚丙烯为均聚聚丙烯，聚丙烯的熔体流动速率MFR≤3克/10分钟，纳米碳酸钙粒子的D90≤100纳米。Wherein the polypropylene is a homopolypropylene, the melt flow rate of the polypropylene is MFR≤3g/10min, and the D 90 of the nanometer calcium carbonate particles is ≤100nm.
Claims (6)
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