CN105958226A - Carbon nanotube modification based resistance-reduction grounding module and preparation method therefor - Google Patents
Carbon nanotube modification based resistance-reduction grounding module and preparation method therefor Download PDFInfo
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- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
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Abstract
本发明涉及一种基于碳纳米管改性的降阻接地模块及其制备方法，属于安全接地技术领域。长方形圆柱体或长方体的接地模块本体内部与金属芯极穿接，该接地模块本体均匀分布穿透圆形孔洞，该圆形孔洞的内部填充满化学降阻剂。将聚氨酯原料和碳纳米管加入到搅拌器进行搅拌，得到混合均匀的导电发泡聚氨酯备料，将导电发泡聚氨酯备料注入接地模块本体的穿透孔洞中，聚氨酯在穿透孔洞中进行发泡固化。优点是碳纳米管不会随着使用时间的延长而流失，因此本发明所述的接地模块长期降阻效果明显，经发泡工艺处理的碳纳米管改性的强电解质材料在单位面积上最大化了接地材料的接触面积，因此提高了消散电流能力。
The invention relates to a resistance-reducing grounding module based on carbon nanotube modification and a preparation method thereof, belonging to the technical field of safety grounding. The inside of the rectangular cylindrical or cuboid grounding module body is connected with the metal core, and the grounding module body is evenly distributed through circular holes, and the inside of the circular holes is filled with chemical resistance reducing agent. Add polyurethane raw materials and carbon nanotubes to the stirrer for stirring to obtain a uniformly mixed conductive foamed polyurethane material, inject the conductive foamed polyurethane material into the penetration hole of the grounding module body, and the polyurethane foams and solidifies in the penetration hole . The advantage is that carbon nanotubes will not be lost with the prolongation of use time, so the long-term resistance reduction effect of the grounding module of the present invention is obvious, and the strong electrolyte material modified by carbon nanotubes treated by foaming process has the largest The contact area of the grounding material is minimized, thus improving the ability to dissipate current.
Description
技术领域 technical field
本发明涉及安全接地技术领域，尤其涉及到一种碳纳米管与高分子材料发泡结合的强降阻接地模块及其制备方法，用于工作接地、安全接地及防雷接地。 The invention relates to the technical field of safety grounding, in particular to a strong resistance-reducing grounding module combined with foaming of carbon nanotubes and polymer materials and a preparation method thereof, which are used for working grounding, safety grounding and lightning protection grounding.
背景技术 Background technique
为了工作和安全的需要，在电力、通信、铁路、系统及智能建筑物、弹药仓库等建筑物上需要安装各种避雷针、避雷器和避雷网，将雷电的瞬间强大电流通过接地系统引入大地，以保护各种设施的安全，所以接地模块的好坏就关系到防雷的效果。目前所知的接地模块降阻材料，主要由石墨、电解质和粘合剂组成，这些成分混合均匀后加水凝固成型或在机器上压制成型，制备为接地模块，填入电解质的目的是为了实现化学降阻，提高整体接地电阻，因为电解质长期渗入土壤容易导致电解质的流失，影响接地模块的降阻效果，因此实际应用时化学降阻效果并不明显。 For the needs of work and safety, it is necessary to install various lightning rods, lightning arresters and lightning protection nets on buildings such as electric power, communication, railways, systems, intelligent buildings, and ammunition warehouses, so as to introduce the instantaneous strong current of lightning into the earth through the grounding system, so as to Protect the safety of various facilities, so the quality of the grounding module is related to the effect of lightning protection. The current known resistance-reducing materials for grounding modules are mainly composed of graphite, electrolyte and binder. These components are mixed evenly and then solidified with water or pressed on a machine to prepare a grounding module. The purpose of filling the electrolyte is to achieve chemical resistance. Reduce resistance and improve the overall grounding resistance, because the long-term infiltration of electrolyte into the soil will easily lead to the loss of electrolyte and affect the resistance reduction effect of the grounding module. Therefore, the chemical resistance reduction effect is not obvious in practical applications.
发明内容 Contents of the invention
本发明提供一种基于碳纳米管改性的降阻接地模块及其制备方法，以解决降阻接地模块实际应用时化学降阻效果不明显的问题。 The invention provides a resistance-reducing grounding module based on carbon nanotube modification and a preparation method thereof to solve the problem that the chemical resistance-reducing effect is not obvious when the resistance-reducing grounding module is actually applied.
本发明采取的技术方案是：长方形圆柱体或长方体的接地模块本体内部与金属芯极穿接，该接地模块本体均匀分布穿透圆形孔洞，该圆形孔洞的内部填充满化学降阻剂。 The technical solution adopted by the present invention is: the inside of the rectangular cylindrical or cuboid grounding module body is connected with the metal core, and the grounding module body is uniformly distributed through circular holes filled with chemical resistance reducing agents.
本发明所述长方形圆柱体或长方体的接地模块本体由石墨和粘合剂凝固加工成型。 The rectangular cylindrical or cuboid grounding module body of the present invention is formed by solidification of graphite and adhesive.
本发明所述金属芯极为牺牲阳极内芯。 The metal core of the present invention is extremely sacrificial anode inner core.
本发明一种基于碳纳米管改性的降阻接地模块的制备方法：包括下列步骤： A method for preparing a resistance-reducing grounding module based on carbon nanotube modification of the present invention includes the following steps:
（一）长方形圆柱体或长方体的接地模块本体的制备：由石墨和粘合剂凝固加工成型，并将金属芯极位于中部，作为接地模块本体，同时在接地模块本体的表面制造出均匀分布的不损伤接地模块机械强度的穿透圆形孔洞，作为物理降阻部分； (1) Preparation of the grounding module body of a rectangular cylinder or cuboid: it is formed by solidification of graphite and adhesive, and the metal core is placed in the middle as the grounding module body, and uniformly distributed on the surface of the grounding module body. The penetrating circular hole that does not damage the mechanical strength of the grounding module is used as a physical resistance reduction part;
（二）化学降阻剂部分包括下列重量份数的原料和制备步骤： (2) The chemical drag reducing agent part includes the following raw materials and preparation steps in parts by weight:
碳纳米管0.5-0.6份 0.5-0.6 parts of carbon nanotubes
聚醚95~105份 Polyether 95~105 parts
无水乙醇95~105份 95~105 parts of absolute ethanol
二异氰酸酯100-180份 100-180 parts of diisocyanate
催化剂：有机锡1-4份 Catalyst: 1-4 parts of organotin
泡沫稳定剂：硅油1-4份 Foam stabilizer: 1-4 parts of silicone oil
（1）、碳纳米管表面处理及分散：利用强酸硫酸、硝酸或高锰酸钾作为强氧化剂，对碳纳米管进行表面改性处理，增加碳纳米管表面的羧基、醛基活性基团的数量，将表面处理过的碳纳米管、无水乙醇以及聚醚进行混合，超声作用下进行分散，形成分散好的碳纳米管聚醚多元醇悬浊液； (1) Surface treatment and dispersion of carbon nanotubes: Use strong acid sulfuric acid, nitric acid or potassium permanganate as a strong oxidant to modify the surface of carbon nanotubes to increase the activity of carboxyl and aldehyde active groups on the surface of carbon nanotubes. Quantity, the surface-treated carbon nanotubes, absolute ethanol and polyether are mixed, and dispersed under the action of ultrasound to form a dispersed carbon nanotube polyether polyol suspension;
（2）、混合：将催化剂有机锡、泡沫稳定剂硅油加入到碳纳米管聚醚多元醇悬浊液中，用搅拌器搅拌均匀； (2) Mixing: Add catalyst organotin and foam stabilizer silicone oil to carbon nanotube polyether polyol suspension, and stir evenly with a stirrer;
（3）、发泡聚合：搅拌的状态下，将二异氰酸酯加入到混合溶液中，当有气体产生时，迅速将混合物浇筑到接地模块本体的穿透圆形孔洞中； (3) Foam polymerization: Add diisocyanate into the mixed solution under stirring, and quickly pour the mixture into the penetrating circular hole of the grounding module body when gas is generated;
（4）、熟化：待混合物发泡完全充满接地模块本体的穿透圆形孔洞后，将充满发泡聚氨酯的接地模块本体放进大型烘箱中，90-110℃下固化3-5小时； (4) Curing: After the mixture foams and completely fills the penetrating circular hole of the grounding module body, put the grounding module body filled with foamed polyurethane into a large oven and cure at 90-110°C for 3-5 hours;
（三）、打开烘箱，取出样品，将溢出接地模块本体发泡聚氨酯切割掉。 (3) Open the oven, take out the sample, and cut off the foamed polyurethane of the overflowing grounding module body.
本发明的优点是： The advantages of the present invention are:
1、长期降阻效果明显：本发明所制得的碳纳米管改性聚氨酯发泡材料，原位聚合的方式可以提高碳纳米管的有效添加量，在使用的过程中，碳纳米管不会随着使用时间的延长而流失，因此本发明所述的接地模块长期降阻效果明显。 1. The long-term resistance reduction effect is obvious: the carbon nanotube modified polyurethane foam material prepared by the present invention can increase the effective addition amount of carbon nanotubes by in-situ polymerization, and the carbon nanotubes will not It will be lost with the prolongation of use time, so the long-term resistance reduction effect of the grounding module of the present invention is obvious.
2、消散电流能力强：经发泡工艺处理的碳纳米管改性的强电解质材料在单位面积上最大化了接地材料的接触面积，因此提高了消散电流能力。 2. Strong ability to dissipate current: The strong electrolyte material modified by carbon nanotubes treated by foaming technology maximizes the contact area of grounding materials per unit area, thus improving the ability to dissipate current.
附图说明 Description of drawings
图1是本发明的结构示意图； Fig. 1 is a structural representation of the present invention;
图2是本发明的A-A剖视图； Fig. 2 is A-A sectional view of the present invention;
图3是本发明穿透圆形孔洞的放大图。 Fig. 3 is an enlarged view of the present invention penetrating a circular hole.
具体实施方式 detailed description
长方形圆柱体或长方体的接地模块本体1内部与金属芯极2穿接，该接地模块本体1均匀分布穿透圆形孔洞3，该圆形孔洞3的内部填充满化学降阻剂4； The inside of the grounding module body 1 of a rectangular cylinder or cuboid is connected with the metal core 2, and the grounding module body 1 is evenly distributed through the circular hole 3, and the inside of the circular hole 3 is filled with a chemical resistance reducing agent 4;
所述长方形圆柱体或长方体的接地模块本体由石墨和粘合剂凝固加工成型； The grounding module body of the rectangular cylinder or cuboid is formed by solidification of graphite and adhesive;
所述金属芯极为牺牲阳极内芯。 The metal core is very sacrificial to the anode core.
实施例1 Example 1
本发明一种基于碳纳米管改性的降阻接地模块的制备方法：包括下列步骤： A method for preparing a resistance-reducing grounding module based on carbon nanotube modification of the present invention includes the following steps:
（一）长方形圆柱体或长方体的接地模块本体的制备：由石墨和粘合剂凝固加工成型，并将金属芯极位于中部，作为接地模块本体，同时在接地模块本体的表面制造出均匀分布的不损伤接地模块机械强度的穿透圆形孔洞，作为物理降阻部分； (1) Preparation of the grounding module body of a rectangular cylinder or cuboid: it is formed by solidification of graphite and adhesive, and the metal core is placed in the middle as the grounding module body, and uniformly distributed on the surface of the grounding module body. The penetrating circular hole that does not damage the mechanical strength of the grounding module is used as a physical resistance reduction part;
（二）化学降阻剂部分包括下列重量份数的原料和制备步骤： (2) The chemical drag reducing agent part includes the following raw materials and preparation steps in parts by weight:
碳纳米管0.5份 0.5 parts of carbon nanotubes
聚醚95份 Polyether 95 parts
无水乙醇95份 95 parts of absolute ethanol
二异氰酸酯100份 100 parts of diisocyanate
催化剂：有机锡1份 Catalyst: 1 part organotin
泡沫稳定剂：硅油1份 Foam stabilizer: 1 part silicone oil
（1）、碳纳米管表面处理及分散：利用强酸硫酸、硝酸或高锰酸钾作为强氧化剂，对碳纳米管进行表面改性处理，增加碳纳米管表面的羧基、醛基活性基团的数量，将表面处理过的碳纳米管、无水乙醇以及聚醚进行混合，超声作用下进行分散，形成分散好的碳纳米管聚醚多元醇悬浊液； (1) Surface treatment and dispersion of carbon nanotubes: Use strong acid sulfuric acid, nitric acid or potassium permanganate as a strong oxidant to modify the surface of carbon nanotubes to increase the activity of carboxyl and aldehyde active groups on the surface of carbon nanotubes. Quantity, the surface-treated carbon nanotubes, absolute ethanol and polyether are mixed, and dispersed under the action of ultrasound to form a dispersed carbon nanotube polyether polyol suspension;
（2）、混合：将催化剂有机锡、泡沫稳定剂硅油加入到碳纳米管聚醚多元醇悬浊液中，用搅拌器搅拌均匀； (2) Mixing: Add catalyst organotin and foam stabilizer silicone oil to carbon nanotube polyether polyol suspension, and stir evenly with a stirrer;
（3）、发泡聚合：搅拌的状态下，将二异氰酸酯加入到混合溶液中，当有气体产生时，迅速将混合物浇筑到接地模块本体的穿透圆形孔洞中； (3) Foam polymerization: Add diisocyanate into the mixed solution under stirring, and quickly pour the mixture into the penetrating circular hole of the grounding module body when gas is generated;
（4）、熟化：待混合物发泡完全充满接地模块本体的穿透圆形孔洞后，将充满发泡聚氨酯的接地模块本体放进大型烘箱中，90℃下固化3小时； (4) Curing: After the mixture foams and completely fills the penetrating circular hole of the grounding module body, put the grounding module body filled with foamed polyurethane into a large oven and cure at 90°C for 3 hours;
（三）、打开烘箱，取出样品，将溢出接地模块本体发泡聚氨酯切割掉。 (3) Open the oven, take out the sample, and cut off the foamed polyurethane of the overflowing grounding module body.
实施例2 Example 2
本发明一种基于碳纳米管改性的降阻接地模块的制备方法：包括下列步骤： A method for preparing a resistance-reducing grounding module based on carbon nanotube modification of the present invention includes the following steps:
（一）长方形圆柱体或长方体的接地模块本体的制备：由石墨和粘合剂凝固加工成型，并将金属芯极位于中部，作为接地模块本体，同时在接地模块本体的表面制造出均匀分布的不损伤接地模块机械强度的穿透圆形孔洞，作为物理降阻部分； (1) Preparation of the grounding module body of a rectangular cylinder or cuboid: it is formed by solidification of graphite and adhesive, and the metal core is placed in the middle as the grounding module body, and uniformly distributed on the surface of the grounding module body. The penetrating circular hole that does not damage the mechanical strength of the grounding module is used as a physical resistance reduction part;
（二）化学降阻剂部分包括下列重量份数的原料和制备步骤： (2) The chemical drag reducing agent part includes the following raw materials and preparation steps in parts by weight:
碳纳米管0.55份 0.55 parts of carbon nanotubes
聚醚100份 Polyether 100 parts
无水乙醇100份 100 parts absolute ethanol
二异氰酸酯140份 140 parts of diisocyanate
催化剂：有机锡2.5份 Catalyst: 2.5 parts of organotin
泡沫稳定剂：硅油2.5份 Foam stabilizer: 2.5 parts of silicone oil
（1）、碳纳米管表面处理及分散：利用强酸硫酸、硝酸或高锰酸钾作为强氧化剂，对碳纳米管进行表面改性处理，增加碳纳米管表面的羧基、醛基活性基团的数量，将表面处理过的碳纳米管、无水乙醇以及聚醚进行混合，超声作用下进行分散，形成分散好的碳纳米管聚醚多元醇悬浊液； (1) Surface treatment and dispersion of carbon nanotubes: Use strong acid sulfuric acid, nitric acid or potassium permanganate as a strong oxidant to modify the surface of carbon nanotubes to increase the activity of carboxyl and aldehyde active groups on the surface of carbon nanotubes. Quantity, the surface-treated carbon nanotubes, absolute ethanol and polyether are mixed, and dispersed under the action of ultrasound to form a dispersed carbon nanotube polyether polyol suspension;
（2）、混合：将催化剂有机锡、泡沫稳定剂硅油加入到碳纳米管聚醚多元醇悬浊液中，用搅拌器搅拌均匀； (2) Mixing: Add catalyst organotin and foam stabilizer silicone oil to carbon nanotube polyether polyol suspension, and stir evenly with a stirrer;
（3）、发泡聚合：搅拌的状态下，将二异氰酸酯加入到混合溶液中，当有气体产生时，迅速将混合物浇筑到接地模块本体的穿透圆形孔洞中； (3) Foam polymerization: Add diisocyanate into the mixed solution under stirring, and quickly pour the mixture into the penetrating circular hole of the grounding module body when gas is generated;
（4）、熟化：待混合物发泡完全充满接地模块本体的穿透圆形孔洞后，将充满发泡聚氨酯的接地模块本体放进大型烘箱中，100℃下固化4小时； (4) Curing: After the mixture is foamed and completely filled with the penetrating circular hole of the grounding module body, put the grounding module body filled with foamed polyurethane into a large oven and cure at 100°C for 4 hours;
（三）、打开烘箱，取出样品，将溢出接地模块本体发泡聚氨酯切割掉。 (3) Open the oven, take out the sample, and cut off the foamed polyurethane of the overflowing grounding module body.
实施例3 Example 3
本发明一种基于碳纳米管改性的降阻接地模块的制备方法：包括下列步骤： A method for preparing a resistance-reducing grounding module based on carbon nanotube modification of the present invention includes the following steps:
（一）长方形圆柱体或长方体的接地模块本体的制备：由石墨和粘合剂凝固加工成型，并将金属芯极位于中部，作为接地模块本体，同时在接地模块本体的表面制造出均匀分布的不损伤接地模块机械强度的穿透圆形孔洞，作为物理降阻部分； (1) Preparation of the grounding module body of a rectangular cylinder or cuboid: it is formed by solidification of graphite and adhesive, and the metal core is placed in the middle as the grounding module body, and uniformly distributed on the surface of the grounding module body. The penetrating circular hole that does not damage the mechanical strength of the grounding module is used as a physical resistance reduction part;
（二）化学降阻剂部分包括下列重量份数的原料和制备步骤： (2) The chemical drag reducing agent part includes the following raw materials and preparation steps in parts by weight:
碳纳米管0.6份 0.6 parts of carbon nanotubes
聚醚105份 Polyether 105 parts
无水乙醇105份 105 parts of absolute ethanol
二异氰酸酯180份 180 parts of diisocyanate
催化剂：有机锡4份 Catalyst: 4 parts of organotin
泡沫稳定剂：硅油4份 Foam stabilizer: 4 parts of silicone oil
（1）、碳纳米管表面处理及分散：利用强酸硫酸、硝酸或高锰酸钾作为强氧化剂，对碳纳米管进行表面改性处理，增加碳纳米管表面的羧基、醛基活性基团的数量，将表面处理过的碳纳米管、无水乙醇以及聚醚进行混合，超声作用下进行分散，形成分散好的碳纳米管聚醚多元醇悬浊液； (1) Surface treatment and dispersion of carbon nanotubes: Use strong acid sulfuric acid, nitric acid or potassium permanganate as a strong oxidant to modify the surface of carbon nanotubes to increase the activity of carboxyl and aldehyde active groups on the surface of carbon nanotubes. Quantity, the surface-treated carbon nanotubes, absolute ethanol and polyether are mixed, and dispersed under the action of ultrasound to form a dispersed carbon nanotube polyether polyol suspension;
（2）、混合：将催化剂有机锡、泡沫稳定剂硅油加入到碳纳米管聚醚多元醇悬浊液中，用搅拌器搅拌均匀； (2) Mixing: Add catalyst organotin and foam stabilizer silicone oil to carbon nanotube polyether polyol suspension, and stir evenly with a stirrer;
（3）、发泡聚合：搅拌的状态下，将二异氰酸酯加入到混合溶液中，当有气体产生时，迅速将混合物浇筑到接地模块本体的穿透圆形孔洞中； (3) Foam polymerization: Add diisocyanate into the mixed solution under stirring, and quickly pour the mixture into the penetrating circular hole of the grounding module body when gas is generated;
（4）、熟化：待混合物发泡完全充满接地模块本体的穿透圆形孔洞后，将充满发泡聚氨酯的接地模块本体放进大型烘箱中，110℃下固化5小时； (4) Curing: After the mixture is foamed and completely filled with the penetrating circular hole of the grounding module body, put the grounding module body filled with foamed polyurethane into a large oven and cure at 110°C for 5 hours;
（三）、打开烘箱，取出样品，将溢出接地模块本体发泡聚氨酯切割掉。 (3) Open the oven, take out the sample, and cut off the foamed polyurethane of the overflowing grounding module body.
Claims (4)
Priority Applications (1)
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| CN1805218A (en) * | 2005-01-13 | 2006-07-19 | 李新利 | Quick-mounted earthing pole containing resistance-reducing agent |
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| CN201191652Y (en) * | 2007-11-20 | 2009-02-04 | 李黔鲁 | Strongly resistance reducing earthing module |
| CN202737118U (en) * | 2012-07-04 | 2013-02-13 | 沈阳华威电力设备有限公司 | High-efficiency resistance-reducing grounding module |
| CN103985976A (en) * | 2014-05-09 | 2014-08-13 | 广西南宁百兰斯科技开发有限公司 | Gear type anti-thunder grounding body |
| CN205752594U (en) * | 2016-06-27 | 2016-11-30 | 国网吉林省电力有限公司电力科学研究院 | A kind of resistance-reducing grounding module based on carbon nano-tube modification |
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| CN201191652Y (en) * | 2007-11-20 | 2009-02-04 | 李黔鲁 | Strongly resistance reducing earthing module |
| CN101250321A (en) * | 2008-03-18 | 2008-08-27 | 四川大学 | Preparation of Flexible Conductive Polyurethane Foam |
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