Method for manufacturing multilayer insulated electric wire insulated by biopolyester resin, and multilayer insulated electric wire insulated by biopolyester resin, manufactured according thereto

A manufacturing method and technology of bio-polyester, applied in plastic/resin/wax insulators, insulated cables, insulated conductors, etc., can solve problems such as inability to be used as insulated wires, increased emissions, and environmental pollution

Active Publication Date: 2019-01-11
KOREA INST OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, enamelled coatings are not considered insulating layers according to UL 2353, so the problem with enameled wires is that they cannot be used as insulated wires for various transformers and coils
[0013] In addition, all conventional polyester resins use petrochemical raw materials and thus cause many environmental pollution problems, such as carbon dioxide (CO 2 ) increase in emissions

Method used

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  • Method for manufacturing multilayer insulated electric wire insulated by biopolyester resin, and multilayer insulated electric wire insulated by biopolyester resin, manufactured according thereto
  • Method for manufacturing multilayer insulated electric wire insulated by biopolyester resin, and multilayer insulated electric wire insulated by biopolyester resin, manufactured according thereto
  • Method for manufacturing multilayer insulated electric wire insulated by biopolyester resin, and multilayer insulated electric wire insulated by biopolyester resin, manufactured according thereto

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0064]

[0065] From the by-product of biodiesel produced from soybean oil or waste cooking oil of soybean oil, pure glycerol is separated by performing neutralization, precipitation and distillation processes. Then, in the seed incubator, 0.2 parts by weight of antifoaming agent, 12 parts by weight of Klebsiella pneumoniae and 60 parts by weight of nutrient medium were added to 25 parts by weight of glycerol obtained by the separation step, And fermented at 36° C. for 10 days under aerobic conditions to obtain a fermented liquid.

[0066] Bio-1,3 propanediol was isolated and purified from the fermentation broth prepared in the fermentation step. Then 100 parts by weight of dimethyl phthalate, 65 parts by weight of bio-1,3-propanediol prepared in the step of separating bio-1,3-propanediol, and 0.25 parts by weight of tetrabutyl titanate were sequentially It was added to an autoclave reactor equipped with a stirrer, a temperature controller, and a condenser, and reacted at 2...

Embodiment 1 to 4 and comparative example 1

[0068] : Preparation of multilayer insulated electric wire

[0069] A multilayer insulated electric wire insulated by a biopolyester resin was prepared according to the preparation method of the process described below by mixing the components listed in Table 1 below at each mixing ratio using a mixer.

[0070] First, components according to mixing ratios in Table 1 below were sequentially added to a 20 L Henschel mixer and stirred for 5 minutes. The resulting mixture was melt-mixed using a twin-screw extruder at a barrel temperature of 240° C. to 270° C., and the resulting round rod was prepared into biopolyester pellets with a size of about 4 mm to 5 mm.

[0071] The prepared biopolyester pellets and polymer resin pellets were added to a single-screw extruder (screw type: ), under the condition of barrel temperature of 240°C to 280°C, die head temperature of 275°C and rate of 10kg / hour, copper wire (diameter: 0.5mm) was provided with insulation and coating thickness of 30μ...

experiment example

[0074] Thermal Shock Resistance

[0075] Regarding the thermal shock test of the multilayer insulated electric wires according to Examples 1 and 4 and Comparative Example 1, in the case of Type B, after the electric wire was wound 10 times on a metal rod (thickness: 8 mm), it was straightened into Straight line, thermally deteriorated in an oven at 225°C for 30 minutes, then cooled at room temperature for 1 hour, and when the wires do not crack, each wire is considered to have passed the test. In the case of type F, when the electric wire is wound 10 times on a metal rod (thickness: 8mm), straightened into a straight line, thermally deteriorated in an oven at 240°C for 30 minutes, and then cooled at room temperature for 1 hour, the electric wire When no cracks appeared, the individual wires were considered to have passed the test.

[0076] Withstand voltage after thermal shock

[0077] After conducting the thermal shock test, each wire was wrapped with aluminum foil (len...

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Abstract

The present invention relates to: a method for manufacturing a multilayer insulated electric wire insulated by a biopolyester resin; and a multilayer insulated electric wire insulated by a biopolyester resin, manufactured according thereto, the method comprising the steps of: separating glycerol from biodiesel by-products; separating bio 1,3-propanediol by fermenting the glycerol; preparing a biopolyester resin by means of a transesterification reaction step, using the bio 1,3-propanediol, and a polycondensation reaction step; preparing biopolyester pellets by obtaining a mixture by mixing thebiopolyester resin with an antioxidant and a pigment, and then melt mixing the mixture; and forming two or more layers of insulation layers by extruding the biopolyester pellets on the outer circumference of a conductor, and then forming an outermost insulation layer by extruding polymer resin pellets on the insulation layers. According to the present invention, a multilayer insulated electric wire satisfying environmental protection requirements and simultaneously having the necessary characteristics such as heat resistance and impact resistance, flexibility before and after heating, and scratch resistance, which are required for a use as battery and electronic equipment wiring and coiling, can be readily manufactured.

Description

technical field [0001] The present invention relates to a method of manufacturing a multilayer insulated wire insulated by extruding biopolyester resin and the multilayer insulated wire insulated by biopolyester resin manufactured by the manufacturing method. More specifically, the present invention relates to a method of manufacturing a multilayer insulated electric wire insulated by biopolyester resin, in which a multilayer insulation layer is formed on the periphery of a conductor by extruding biopolyester resin, and then polyamide, poly Phenyl sulfide, polyether sulfone, fluororesin, etc. form the outer coating layer, so that thin wires can be formed for internal wiring of small electronic products, and the heat generated per unit area can also be reduced, so that the wires have high resistance Thermal and insulating properties, and multilayer insulated wires insulated with biopolyester resin manufactured by this manufacturing method. Background technique [0002] Recen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/14H01B7/14H01B7/02H01B3/42
CPCH01B3/42H01B7/02H01B7/14H01B13/14H01B7/0208
Inventor 金相范崔荣泰李宣宗朴银水
Owner KOREA INST OF IND TECH
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