CN109251655A - A kind of novel bus and manufacturing process - Google Patents
A kind of novel bus and manufacturing process Download PDFInfo
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- CN109251655A CN109251655A CN201811030583.7A CN201811030583A CN109251655A CN 109251655 A CN109251655 A CN 109251655A CN 201811030583 A CN201811030583 A CN 201811030583A CN 109251655 A CN109251655 A CN 109251655A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2231—Oxides; Hydroxides of metals of tin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2289—Oxides; Hydroxides of metals of cobalt
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of novel bus, it is related to wiring system technical field, including bus bulk, bus bulk surface is successively arranged interior flame retardant coating, heat-sink shell and outer flame retardant coating, the coating of outer flame retardant coating includes following component according to parts by weight: 65 parts~80 parts of toluene di-isocyanate(TDI), 45 parts~55 parts of polyether Glycols, 10 parts~12 parts of dimethyl silicone polymer, 8 parts~10 parts of epoxy resin, 2 parts~4 parts of metal oxide, 3 parts~6 parts of graphene, 3 parts~5 parts of ammonium polyphosphate, 1 part~2 parts of melamine, 4 parts~6 parts of pentaerythrite, 2 parts~3 parts of diethyl toluene diamine, 2 parts~4 parts of trimethylolpropane, 3 parts~4 parts of dibutyl tin dilaurate.Invention significantly improves the fire retardant performances of coating, effectively smog can be inhibited to generate, while greatly improving its mechanical property.
Description
Technical field
The present invention relates to wiring system technical fields, more particularly to a kind of novel bus and manufacturing process.
Background technique
In electric insulation product, bus bar Insulating heat shrink provides insulation protection for copper bar, prevents electrification bare wire row
It causes the accident, prevents short circuit caused by toy and electric leakage.The distance for reducing copper bar provides bigger design freely limited
In switchgear space, in voltage rating 35kv hereinafter, effectivelying prevent dust, filth, condensation flashover.Currently, existing bus is fire-retardant
Fire protecting performance still needs to improve, if bus flame retardant property is not up to standard, can hide some dangers for for power equipment safety.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of novel bus, including bus bulk, bus bulk surface
It is successively arranged interior flame retardant coating, heat-sink shell and outer flame retardant coating, the coating of interior flame retardant coating includes according to parts by weight as follows
Component: 65 parts~80 parts of toluene di-isocyanate(TDI), 45 parts~55 parts of polyether Glycols, 10 parts~12 parts of dimethyl silicone polymer,
8 parts~10 parts of epoxy resin, 2 parts~4 parts of metal oxide, 3 parts~6 parts of graphene, 3 parts of ammonium polyphosphate~5 parts, melamine
1 part~2 parts, 4 parts~6 parts of pentaerythrite, 2 parts~3 parts of diethyl toluene diamine, 2 parts~4 parts of trimethylolpropane, two laurels
3 parts~4 parts of sour dibutyl tin.
Technical effect: the present invention devises one kind by organosilicon and the composite modified polyurethane coating of epoxy resin, significantly mentions
The high fire retardant performance of coating, while greatly improving its mechanical property；The flame retardant coating and outer in bus surface is arranged
Flame retardant coating further increases the fire protecting performance of bus；Heat-sink shell is set, the temperature of bus is reduced by heat absorption, is improved heat-resisting
Performance.
The technical solution that the present invention further limits is:
A kind of preceding novel bus, metal oxide includes tin oxide and cobaltosic oxide.
A kind of preceding novel bus, the preparation method for coating of interior flame retardant coating are as follows:
S1, toluene di-isocyanate(TDI), polyether Glycols are uniformly mixed；
S2, dibutyl tin dilaurate is added, is heated to 75 DEG C, is stirred at low speed with 150r/min, react 0.5h~1.0h, it is cooling
To room temperature, base polyurethane prepolymer for use as is obtained；
S3, dimethyl silicone polymer, epoxy resin, diethyl toluene diamine, trimethylolpropane are added to polyurethane prepolymer
In body, 75 DEG C are heated to, is stirred at low speed with 150r/min, reacts 0.5h~1.0h；
S4, other raw materials being added in formula, are uniformly mixed with 300r/min.
A kind of preceding novel bus, outer flame retardant coating are formed by nitrate paint even spread, and 45 μm~50 μm of thickness；It is interior
Flame retardant coating is with a thickness of 65 μm~70 μm.
A kind of preceding novel bus, heat-sink shell are uniformly filled using magnesium hydroxide or aluminium hydroxide, 35 μ of thickness
M~40 μm.
Another object of the present invention is to provide a kind of manufacturing process of novel bus, and bus bulk removing surface is done
Only, it is sufficiently dried under 50 DEG C of environment；Flame retardant coating in one layer is first uniformly brushed on dry bus bulk surface, it is fire-retardant inside
Heat-sink shell is uniformly laid on interior flame retardant coating rapidly before coating is dry；It coheres and is integrated with heat-sink shell to interior flame retardant coating
And after drying, then one layer of outer flame retardant coating is uniformly brushed, it is sufficiently dry.
The beneficial effects of the present invention are:
(1) graphene is added in the present invention and metal oxide, graphene can effectively improve the thermal conductivity of epoxy resin, thus
It is set to obtain better flame retardant effect, when fire-retardant, the catalytic action of metal oxide is cooperateed with the suction-operated of graphene formation
Effect, effectively can inhibit smog to generate；
(2) nitrogenated flame retardant is added in the present invention and phosphorus flame retardant, phosphorus-nitrogen forms synergistic effect, nitrogen-atoms is conducive to phosphorus
Flame retardant resolves into polyphosphoric acid, the effect that the viscosity flow layer of formation has insulation, completely cuts off air, and nitrogen component and phosphoric acid combine,
There is blow-up effect in flame, extruding can be made to be formed, and carbon is burnt, and nitrogen and phosphorus form ammonium phosphate, generates the shape that PN key inhibits combustibles
At；
(3) heat-sink shell is set between interior flame retardant coating and outer flame retardant coating in the present invention, and heat-sink shell fills magnesium hydroxide or hydrogen-oxygen
Change aluminium, magnesium hydroxide is decomposed when heated, and sorbent surface heat plays fire retardation, while releasing large quantity of moisture dilution
The oxygen on surface, the activated magnesia for decomposing generation are attached to combustible surface and further prevent to burn.
Specific embodiment
Embodiment 1
A kind of novel bus provided in this embodiment, including bus bulk, bus bulk surface are successively arranged interior flame retardant coating, suction
Thermosphere and outer flame retardant coating.
The coating of interior flame retardant coating includes following component according to parts by weight: 65 parts of toluene di-isocyanate(TDI), polyethers two
Totally 2 parts of 45 parts of first alcohol, 10 parts of dimethyl silicone polymer, 8 parts of epoxy resin, tin oxide and cobaltosic oxide, gather 3 parts of graphene
3 parts of ammonium phosphate, 1 part of melamine, 4 parts of pentaerythrite, 2 parts of diethyl toluene diamine, 2 parts of trimethylolpropane, tin dilaurate
3 parts of dibutyl tin.
The preparation method for coating of interior flame retardant coating is as follows:
S1, toluene di-isocyanate(TDI), polyether Glycols are uniformly mixed；
S2, dibutyl tin dilaurate is added, is heated to 75 DEG C, is stirred at low speed with 150r/min, react 0.5h, be cooled to room
Temperature obtains base polyurethane prepolymer for use as；
S3, dimethyl silicone polymer, epoxy resin, diethyl toluene diamine, trimethylolpropane are added to polyurethane prepolymer
In body, 75 DEG C are heated to, is stirred at low speed with 150r/min, reacts 0.5h；
S4, other raw materials being added in formula, are uniformly mixed with 300r/min.
Outer flame retardant coating is formed by nitrate paint even spread, and 45 μm of thickness；Interior fire-retardant coating layer thickness is 65 μm；Heat-sink shell is adopted
It is uniformly filled with magnesium hydroxide or aluminium hydroxide, 35 μm of thickness.
The manufacturing process of above-mentioned novel bus, bus bulk removing surface is clean, it is sufficiently dried under 50 DEG C of environment；?
Flame retardant coating in one layer is first uniformly brushed on dry bus bulk surface, rapidly that heat-sink shell is equal before interior flame retardant coating is dry
It is even to be laid on interior flame retardant coating；It is brushed outside one layer after interior flame retardant coating and heat-sink shell cohere and be integrated and dry, then uniformly
Flame retardant coating, it is sufficiently dry.
Embodiment 2
A kind of novel bus provided in this embodiment, including bus bulk, bus bulk surface are successively arranged interior flame retardant coating, suction
Thermosphere and outer flame retardant coating.
The coating of interior flame retardant coating includes following component according to parts by weight: 75 parts of toluene di-isocyanate(TDI), polyethers two
Totally 3 parts of 50 parts of first alcohol, 11 parts of dimethyl silicone polymer, 9 parts of epoxy resin, tin oxide and cobaltosic oxide, gather 5 parts of graphene
4 parts of ammonium phosphate, 1.5 parts of melamine, 5 parts of pentaerythrite, 2.5 parts of diethyl toluene diamine, 3 parts of trimethylolpropane, February
3.5 parts of dilaurylate.
The preparation method for coating of interior flame retardant coating is as follows:
S1, toluene di-isocyanate(TDI), polyether Glycols are uniformly mixed；
S2, dibutyl tin dilaurate is added, is heated to 75 DEG C, is stirred at low speed with 150r/min, react 0.8h, be cooled to room
Temperature obtains base polyurethane prepolymer for use as；
S3, dimethyl silicone polymer, epoxy resin, diethyl toluene diamine, trimethylolpropane are added to polyurethane prepolymer
In body, 75 DEG C are heated to, is stirred at low speed with 150r/min, reacts 0.8h；
S4, other raw materials being added in formula, are uniformly mixed with 300r/min.
Outer flame retardant coating is formed by nitrate paint even spread, and 47 μm of thickness；Interior fire-retardant coating layer thickness is 68 μm；Heat-sink shell is adopted
It is uniformly filled with magnesium hydroxide or aluminium hydroxide, 37 μm of thickness.
The manufacturing process of above-mentioned novel bus, bus bulk removing surface is clean, it is sufficiently dried under 50 DEG C of environment；?
Flame retardant coating in one layer is first uniformly brushed on dry bus bulk surface, rapidly that heat-sink shell is equal before interior flame retardant coating is dry
It is even to be laid on interior flame retardant coating；It is brushed outside one layer after interior flame retardant coating and heat-sink shell cohere and be integrated and dry, then uniformly
Flame retardant coating, it is sufficiently dry.
Embodiment 3
A kind of novel bus provided in this embodiment, including bus bulk, bus bulk surface are successively arranged interior flame retardant coating, suction
Thermosphere and outer flame retardant coating.
The coating of interior flame retardant coating includes following component according to parts by weight: 80 parts of toluene di-isocyanate(TDI), polyethers two
Totally 4 parts of 55 parts of first alcohol, 12 parts of dimethyl silicone polymer, 10 parts of epoxy resin, tin oxide and cobaltosic oxide, gather 6 parts of graphene
5 parts of ammonium phosphate, 2 parts of melamine, 6 parts of pentaerythrite, 3 parts of diethyl toluene diamine, 4 parts of trimethylolpropane, tin dilaurate
4 parts of dibutyl tin.
The preparation method for coating of interior flame retardant coating is as follows:
S1, toluene di-isocyanate(TDI), polyether Glycols are uniformly mixed；
S2, dibutyl tin dilaurate is added, is heated to 75 DEG C, is stirred at low speed with 150r/min, react 1.0h, be cooled to room
Temperature obtains base polyurethane prepolymer for use as；
S3, dimethyl silicone polymer, epoxy resin, diethyl toluene diamine, trimethylolpropane are added to polyurethane prepolymer
In body, 75 DEG C are heated to, is stirred at low speed with 150r/min, reacts 1.0h；
S4, other raw materials being added in formula, are uniformly mixed with 300r/min.
Outer flame retardant coating is formed by nitrate paint even spread, and 50 μm of thickness；Interior fire-retardant coating layer thickness is 70 μm；Heat-sink shell is adopted
It is uniformly filled with magnesium hydroxide or aluminium hydroxide, 40 μm of thickness.
The manufacturing process of above-mentioned novel bus, bus bulk removing surface is clean, it is sufficiently dried under 50 DEG C of environment；?
Flame retardant coating in one layer is first uniformly brushed on dry bus bulk surface, rapidly that heat-sink shell is equal before interior flame retardant coating is dry
It is even to be laid on interior flame retardant coating；It is brushed outside one layer after interior flame retardant coating and heat-sink shell cohere and be integrated and dry, then uniformly
Flame retardant coating, it is sufficiently dry.
Bus made from 1~embodiment of embodiment 3 is tested for the property respectively, the result is as follows:
| Detection project | Commercially available common product | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Tensile strength/MPa | 45 | 71 | 71 | 73 |
| Bending strength/MPa | 96 | 114 | 115 | 112 |
| Burning time/s in 580 DEG C of glowing filament contact material 30s | 11 | It is not on fire | It is not on fire | It is not on fire |
As seen from the above table, compared with commercially available common bus, the present invention devises a kind of composite modified by organosilicon and epoxy resin
Polyurethane coating significantly improves the fire retardant performance of coating, effectively smog can be inhibited to generate, while greatly improving it
Mechanical property.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (6)
1. a kind of novel bus, including bus bulk, it is characterised in that: the bus bulk surface is successively arranged interior fire-retardant painting
Layer, heat-sink shell and outer flame retardant coating, the coating of the interior flame retardant coating include following component according to parts by weight: toluene two is different
65 parts~80 parts of cyanate, 45 parts~55 parts of polyether Glycols, 10 parts~12 parts of dimethyl silicone polymer, 8 parts of epoxy resin~
10 parts, 2 parts~4 parts of metal oxide, 3 parts~6 parts of graphene, 3 parts~5 parts of ammonium polyphosphate, 1 part~2 parts of melamine, season penta
4 parts~6 parts of tetrol, 2 parts~3 parts of diethyl toluene diamine, 2 parts~4 parts, 3 parts of dibutyl tin dilaurate of trimethylolpropane
~4 parts.
2. novel bus according to claim 1, it is characterised in that: the metal oxide includes tin oxide and four oxidations
Three cobalts.
3. novel bus according to claim 1, it is characterised in that: the preparation method for coating of the interior flame retardant coating is such as
Under:
S1, toluene di-isocyanate(TDI), polyether Glycols are uniformly mixed；
S2, dibutyl tin dilaurate is added, is heated to 75 DEG C, is stirred at low speed with 150r/min, react 0.5h~1.0h, it is cooling
To room temperature, base polyurethane prepolymer for use as is obtained；
S3, dimethyl silicone polymer, epoxy resin, diethyl toluene diamine, trimethylolpropane are added to polyurethane prepolymer
In body, 75 DEG C are heated to, is stirred at low speed with 150r/min, reacts 0.5h~1.0h；
S4, other raw materials being added in formula, are uniformly mixed with 300r/min.
4. novel bus according to claim 1, it is characterised in that: the outer flame retardant coating by nitrate paint even spread and
At 45 μm~50 μm of thickness；The interior fire-retardant coating layer thickness is 65 μm~70 μm.
5. novel bus according to claim 1, it is characterised in that: the heat-sink shell uses magnesium hydroxide or aluminium hydroxide
It uniformly fills, 35 μm~40 μm of thickness.
6. a kind of manufacturing process of novel bus, it is characterised in that: bus bulk removing surface is clean, it is filled under 50 DEG C of environment
Divide drying；Flame retardant coating in one layer is first uniformly brushed on dry bus bulk surface, before interior flame retardant coating is dry rapidly
Heat-sink shell is uniformly laid on interior flame retardant coating；After interior flame retardant coating and heat-sink shell cohere and are integrated and dry, then uniformly
One layer of outer flame retardant coating is brushed, it is sufficiently dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030583.7A CN109251655A (en) | 2018-09-05 | 2018-09-05 | A kind of novel bus and manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030583.7A CN109251655A (en) | 2018-09-05 | 2018-09-05 | A kind of novel bus and manufacturing process |
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| Publication Number | Publication Date |
|---|---|
| CN109251655A true CN109251655A (en) | 2019-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811030583.7A Pending CN109251655A (en) | 2018-09-05 | 2018-09-05 | A kind of novel bus and manufacturing process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111269636A (en) * | 2020-03-25 | 2020-06-12 | 厦门东骅科技有限公司 | Plastic wire slot and manufacturing process |
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|---|---|---|---|---|
| CN102775858A (en) * | 2012-07-07 | 2012-11-14 | 苏州萃智新技术开发有限公司 | Flame-retardant nitrolacquer |
| CN107151522A (en) * | 2017-05-05 | 2017-09-12 | 天津大学 | Graphene is modified APP/PERM/EL aqueous polyurethanes anti-flaming dope and preparation method |
| CN107779077A (en) * | 2017-10-27 | 2018-03-09 | 安徽海程铁路器材科技有限公司 | A kind of railway elastic bar is with watersoluble closed dose |
| CN108493875A (en) * | 2018-04-08 | 2018-09-04 | 江苏华强电力设备有限公司 | A kind of high-protection level copper-aluminum composite conductor bus duct |
| CN108485244A (en) * | 2018-04-28 | 2018-09-04 | 广州顺力聚氨酯科技有限公司 | Flame-retardant polyurethane elastomer and its preparation method and application |
-
2018
- 2018-09-05 CN CN201811030583.7A patent/CN109251655A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775858A (en) * | 2012-07-07 | 2012-11-14 | 苏州萃智新技术开发有限公司 | Flame-retardant nitrolacquer |
| CN107151522A (en) * | 2017-05-05 | 2017-09-12 | 天津大学 | Graphene is modified APP/PERM/EL aqueous polyurethanes anti-flaming dope and preparation method |
| CN107779077A (en) * | 2017-10-27 | 2018-03-09 | 安徽海程铁路器材科技有限公司 | A kind of railway elastic bar is with watersoluble closed dose |
| CN108493875A (en) * | 2018-04-08 | 2018-09-04 | 江苏华强电力设备有限公司 | A kind of high-protection level copper-aluminum composite conductor bus duct |
| CN108485244A (en) * | 2018-04-28 | 2018-09-04 | 广州顺力聚氨酯科技有限公司 | Flame-retardant polyurethane elastomer and its preparation method and application |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111269636A (en) * | 2020-03-25 | 2020-06-12 | 厦门东骅科技有限公司 | Plastic wire slot and manufacturing process |
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Application publication date: 20190122 |