CN102496423B

CN102496423B - Production method of polymer composite power bus bar or bus tube

Info

Publication number: CN102496423B
Application number: CN 201110386082
Authority: CN
Inventors: 杨金保; 杨阳; 鲍克霞
Original assignee: ANQING SANYANG PLASTIC MATERIALS CO LTD
Current assignee: ANHUI SANYANG PLASTIC MATERIAL CO., LTD.
Priority date: 2011-11-29
Filing date: 2011-11-29
Publication date: 2013-03-20
Anticipated expiration: 2031-11-29
Also published as: CN102496423A

Abstract

The invention discloses a production method of a polymer composite power bus bar or bus tube. The production method comprises the following steps of: putting a normal-temperature instant crosslinking low-smoke halogen-free flame-retardant heat-shrinkable tube material into an extruding machine, and extruding by using an co-extrusion die to coat the normal-temperature instant crosslinking low-smoke halogen-free flame-retardant heat-shrinkable tube material on a bus bar or bus tube, wherein the traction rate is 12 meters/minute, and the temperatures of the extruding machine are as follows: first region 115 DEG C, second region 145 DEG C, third region 165 DEG C, fourth region 185 DEG C, machine head 185 DEG C and die 195 DEG C; and cooling in a water tank, standing at normal temperature to enable self-crosslinking, thereby obtaining the polymer composite power bus bar or bus tube. According to the invention, the continuous and automatic production of the polymer composite power bus bar or bus tube is implemented, the production efficiency is improved and the energy and material consumption is reduced; and the defects of high tendency to electric field breakdown due to multiple coating joints, cracking, bulging, poor compactness and the like when the bus is produced by manual bar sheathing, sleeving winding mode in the traditional technique are overcome, and the sealability and electric properties of the bus bar or bus tube are enhanced.

Description

The production method of a kind of polymer composite power bus bar or bus pipe

Technical field

The present invention relates to a kind of the have power bus bar of safeguard function, the production method of bus pipe, be specifically related to the production method of a kind of polymer composite power bus bar or bus pipe.

Background technology

Along with expanding economy, China progressively strengthens the construction and upgrading of urban distribution network and rural power grids, and then promotes power supply quality and the supportability of electrical network.In the transformation and process of construction of electrical network, need a large amount of key facilities that adopt square type copper or aluminium power bus bar or bus pipe to connect as electric equipment.But there are obvious shortcoming in bare bus bar row or bare bus bar pipe, and its Supply Security does not ensure, has the generation of the flashover faults such as foreign matter overlap joint, animal short circuit, weather temperature change condensation and artificial electric shock.For this reason, protect other specific (special) requirements such as bare bus bar row or bare bus bar pipe insulate.Now common practice is that heat shrink makes it have the functions such as insulation, fire-resisting protection put the heat-shrink tube of Various Functions outside bare bus bar row or bare bus bar pipe after.Yet the production of heat-shrink tube need be passed through masterbatch production, squeeze the processes such as pipe, cross-linking radiation, expander cooling.And then the heat-shrink tube of Various Functions manually is enclosed within on bus bar or the bus pipe, through heating its contraction is tightly placed on bus bar or the bus pipe, finish power bus bar, bus pipe that whole link is made safeguard functions such as having insulation, fire-retardant.Because heat-shrinkable T bush function singleness, if need multi-functional compound (insulation, fire-retardant) macromolecular material bus bar or bus pipe, need the then corresponding heat-shrink tube that repeats to overlap the respective numbers number of plies of several functions, easily break during this time, bulge, the mistake such as inhomogeneous, in case occur then nullify all the advantages, do again from the beginning.Also have take manual wrapped as main, layering is carried out the coated high molecular material to bus bar, bus pipe, is not serialization production, production efficiency is extremely low, and product quality can not get effective assurance, takes a lot of work, time-consuming, waste wood, labour intensity is large, requires extremely unbecoming with modernization.

Along with the active demand to the large electric current safe transmission of large capacity, adopt the importance of novel macromolecular material/metal composite bus bar, bus pipe and structural member also further to highlight.In the later stage in the 90's, begin both at home and abroad to pay close attention in large quantities and research and utilization macromolecular material/metal composite cast bus and structural member technology.German DEGUGAR company began to sell at home copper aluminum metal pipe insulation shielding bus in 2003, the insulating material of this product is to adopt epoxy resin fiberglass cloth lamination dipping to solidify preparation, product structure is rigidity too, heat dispersion is poor, cold cycling is prone to metal level and resin bed cracking, affect the stable of electric property, also exist the weight of unit length bus to lay particular stress on, the problems such as inconvenience are installed.But constantly enlarge with station capacity, low pressure output line electric current constantly increases, and bus bar, bus pipe temperature rise improve, and its coated high molecular material is because Non-crosslinked is processed, and its heatproof is limited, burn-off or accelerated ageing phenomenon occur.

Summary of the invention

Technical problem to be solved by this invention provides the composite high-molecular of a kind of good airproof performance, production efficiency height, ambient cross-linking

The production method of material power bus bar or bus pipe.The power bus bar of producing or bus pipe have softness, halogen-free flameproof, insulation property.

For solving the problems of the technologies described above, the production method of polymer composite power bus bar of the present invention or bus pipe is: room-temperature rapid coupling low-smoke non-halogen flame-retardant pyrocondensation materials in the tube are placed extruder, extrude by co-extruding mould, be coated on bus bar or the bus pipe, described extruder temperature is: 115 ℃ in a district, 145 ℃ in two districts, 165 ℃ in three districts, 185 ℃ in four districts, 185 ℃ of heads, 195 ℃ on mould, pulling speed is 12 m/mins, after the tank cooling, normal temperature is placed, and allows it crosslinkedly voluntarily can obtain polymer composite power bus bar or bus pipe.

Establish an Insulation Material extruder in the said method, this machine co-extruding mould and pyrocondensation materials in the tube extruder co-extruding mould " V " type are placed co-extrusion again, and the insulation bed of material is internal layer, and the fire-retardant bed of material is outer.

The room-temperature rapid coupling low-smoke non-halogen flame-retardant pyrocondensation materials in the tube that the present invention adopts, the disclosed a kind of room-temperature rapid coupling low-smoke non-halogen flame-retardant pyrocondensation materials in the tube of Chinese patent CN102219953A, these materials in the tube represent with parts by weight, by the ethylene-vinyl acetate ester copolymer: 30-40 parts, ethylene-propylene rubber EPDM:10-20 part, ammonium polyphosphate flame retardant: 10-20 parts, isocyanuric acid melamine salt: 10-20 parts, activation magnesium hydroxide: 10-20 parts, 20-30 parts in activation aluminium hydroxide, self-control compatilizer: 5-10 parts, unsaturated silane: 1.0-5 parts, saturated function groups silane: 1.0-3.0 parts, radical initiator: 0.1-2 parts, organotin catalysts: 0.1-1 part, antioxidant 1010: 0.1-0.5 part, copper resistant agent MD1024:0.1-0.5 part, Tissuemat E lubricant: 0.5-2 parts of compositions.Unsaturated silane is vinyltrimethoxy silane or vinyltriethoxysilane.Saturated function groups silane is positive Ethoxysilane or positive propoxy silane.Radical initiator is 1,1-di-tert-butyl peroxide thiacyclohexane, benzoyl peroxide or cumyl peroxide.Organotin catalysts is dibutyl tin laurate or two laurate tin diethyls.This thermal contraction materials in the tube do not need to use electron accelerator or cobalt-60 radiosterilize, and crosslinked at normal temperatures.

Insulation Material is common used material, comprises the LDPE(low density polyethylene (LDPE)) class, HDPE(high density polyethylene (HDPE)) class, PVC(polyvinyl chloride) class, synthetic rubber class.The Insulation Material extruder is respectively distinguished temperature by the known temperature control of using this material.

Because technique scheme directly is coated on macromolecular material on bus bar or the bus pipe, be coated on bus bar or bus pipe macromolecular material can crosslinked (bus bar behind the coated high molecular material, bus pipe can't carry out cross-linking radiation or other ways are crosslinked) occur under normal temperature, the normal pressure voluntarily that it is heat-resisting to improve, the performances such as weather-resistant, antiacid alkali, anti-organic solvent and stress cracking.Namely utilize its room-temperature rapid coupling performance that has to reach the same protection effect of existing product.The traditional handicraft that manual layering is coated has realized serialization, the automated production of composite high-molecular material bus bar or bus pipe, not only greatly improved the production efficiency of bus bar, pipe, simplify production link, can reduce human cost simultaneously, reduce the energy and material consumption, thereby reduce integrated cost; Effectively avoid and overcome artificial cover row, sleeve pipe or canoe in the traditional handicraft produce the coating joint of bus many, break, bulge, the poor grade of density easily causes the drawback of electric field breakdown, make between the coating layer of clad material and bus surface and different materials and do not have the space, effectively bonding between the material layer, improved sealing, electric property gets a promotion.

Embodiment

Example one: 10kv tool anti-flaming function composite high-molecular material 8 * 80 bus bar production methods: adopt extruder of SJ65/25, individual layer co-extruding mould T-shape is placed co-extrusion, material is 8 * 80 copper busbars row and the disclosed embodiment 1 room-temperature rapid coupling low-smoke non-halogen flame-retardant pyrocondensation materials in the tube of CN102219953A, flame-proof material layer thickness 2mm ± 0.05mm;

SJ65/25 machine temperature arranges: 115 ℃ in a district, 145 ℃ in two districts, 165 ℃ in three districts, 185 ℃ in four districts, 185 ℃ of heads, 195 ℃ on mould;

12 m/mins of pulling speeds are placed test more than two days after the tank cooling.

According to GB/T16927.1-1997, GB/T11022-1999 standards, above-mentioned composite bus row is detected test result such as table one:

Table one: example one test result

Conclusion: above-mentioned composite high-molecular material bus bar complies with the national standard requirements fully.

The production method of flame-proof material individual layer bus pipe is with example one.

Example two: the production method of the insulation of 35kv tool and anti-flaming function composite high-molecular material 8 * 80 bus bars: two kinds of functional insulations and fire-retardant employing SJ65/25 and small one and large one two extruders of SJ45/25, two-layer co-extruding mould " V " type is placed co-extrusion, material is 8 * 80 copper busbars row, disclosed embodiment 1 room-temperature rapid coupling low-smoke non-halogen flame-retardant pyrocondensation materials in the tube and the LDPE(low density polyethylene (LDPE) of CN102219953A) the class Insulation Material, Insulation Material is put internal layer, thickness 1mm ± 0.05mm, flame-proof material is put skin, thickness 2mm ± 0.05mm;

The SJ65/25 machine squeezes outer flame-proof material, the temperature setting: 115 ℃ in a district, 145 ℃ in two districts, 165 ℃ in three districts, 185 ℃ in four districts, 195 ℃ on 185 ℃ of moulds of head;

The SJ45/25 machine squeezes the internal layer flame-proof material, the temperature setting: 115 ℃ in a district, 135 ℃ in two districts, 165 ℃ in three districts, 185 ℃ in four districts, 185 ℃ of heads, 195 ℃ on mould;

12 m/mins of pulling speeds are placed test more than three days after the tank cooling.

According to GB/T16927.1-1997, GB/T11022-1999 standards, above-mentioned composite bus row is detected test result such as table two:

Table two: example two test results

The production method of the double-deck bus pipe of flame-proof material and Insulation Material is with example two.

The SJ45/25 machine squeezes the primary insulation material, and is as follows depending on the different extrusion temperatures of kind:

1, HDPE(high density polyethylene (HDPE)) class: 135 ℃ in a district, 155 ℃ in two districts, 175 ℃ in three districts, 185 ℃ in four districts, 190 ℃ of heads, mould 198.

2, PVC(adjudicate two cases together ethene) class: 105 ℃ in a district, 115 ℃ in two districts, 135 ℃ in three districts, 150 ℃ in four districts, 160 ℃ of heads, 170 ℃ on mould.

3, synthetic rubber class: 145 ℃ in a district, 165 ℃ in two districts, 185 ℃ in three districts, 190 ℃ in four districts, 195 ℃ of heads, 205 ℃ on mould.

Claims

1. the production method of a polymer composite power bus bar or bus pipe: room-temperature rapid coupling low-smoke non-halogen flame-retardant pyrocondensation materials in the tube are placed extruder, extrude by co-extruding mould, be coated on bus bar or the bus pipe, described extruder temperature is: 115 ℃ in a district, 145 ℃ in two districts, 165 ℃ in three districts, 185 ℃ in four districts, 185 ℃ of heads, 195 ℃ on mould, pulling speed is 12 m/mins, after the tank cooling, normal temperature is placed, and allows it crosslinkedly voluntarily can obtain polymer composite power bus bar or bus pipe.

2. the production method of polymer composite power bus bar according to claim 1 or bus pipe, it is characterized in that: establish again an Insulation Material extruder, this machine co-extruding mould and pyrocondensation materials in the tube extruder co-extruding mould " V " type are placed co-extrusion, the insulation bed of material is internal layer, and the fire retardant thermal shrinkage tube bed of material is outer.