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Electric-insulation thermoplastic resin composition and preparation method thereof

A thermoplastic resin and electrical insulation technology, which is applied in the field of electrical insulating thermoplastic resin composition and its preparation, can solve the problems of processing and manufacturing costs, high transportation costs, difficult recycling of metal materials, and insufficient electrical insulation performance. Long, good interfacial compatibility, excellent electrical insulation properties

Pending Publication Date: 2015-08-05
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of filler is added to thermosetting epoxy resin and silica powder, and the density is relatively high, which makes the insulation part of the primary equipment of the medium voltage switch relatively bulky, and the product processing and manufacturing costs and transportation costs are high
Thermosetting epoxy resin undergoes chemical changes during the processing and molding process. The processing and molding process is complicated, and the molding cycle of the product is longer. It becomes an insoluble and infusible highly cross-linked material. It is also difficult to recycle the metal materials in the product after the material is solidified, causing a lot of waste
[0004] Nowadays, light-weight, high-strength, easy-to-process thermoplastic resins with excellent electrical insulation properties are used for solid insulation packaging of medium-voltage switch primary equipment. For example, the invention patent with the notification number CN201310295685.2 discloses an anti-aging PA-PPS plastic alloy. This plastic alloy overcomes the shortcomings of low impact strength and poor bending resistance, improves the impact toughness of the material, and has excellent heat aging performance, suitable for use in extreme high temperature environments, but the electrical insulation performance is not high enough

Method used

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  • Electric-insulation thermoplastic resin composition and preparation method thereof
  • Electric-insulation thermoplastic resin composition and preparation method thereof
  • Electric-insulation thermoplastic resin composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The formula of thermoplastic resin composition is as follows:

[0052]

[0053] Preparation:

[0054] (1) Dry polybutylene terephthalate (PBT) in an oven at 110°C for 4 hours;

[0055] (2) Set the four stages of processing melting temperature of the twin-screw extruder to 265°C / 280°C / 290°C / 285°C, the head temperature to 280°C, set the speed of the main engine and the speed of the cutting machine to 100rpm / min and 300rpm / min, water cooling;

[0056] (3) adding the dried thermoplastic resin and auxiliary agent into the twin-screw extruder set in step (2) to obtain thermoplastic resin composition pellets;

[0057] (4) Set the nozzle temperature of the injection molding machine to 335°C, the temperature of the three stages to 310°C / 335°C / 330°C, the mold temperature to 120°C, the cooling time to 10s, the injection pressure to 3.5Mpa, and the holding pressure to 4Mpa and the holding time is 5s;

[0058](5) Put the thermoplastic resin composition pellets obtained in ste...

Embodiment 2

[0060] The formula of thermoplastic resin composition is as follows:

[0061]

[0062]

[0063] Preparation:

[0064] (1) Dry the high-temperature nylon in an oven at 110°C for 4 hours;

[0065] (2) Set the four stages of processing and melting temperature of the twin-screw extruder to 265°C / 280°C / 290°C / 285°C, the head temperature to 280°C, set the speed of the main engine and the speed of the cutting machine to 100rpm / min and 300rpm / min, water cooling;

[0066] (3) adding the dried thermoplastic resin and auxiliary agent into the twin-screw extruder set in step (2) to obtain thermoplastic resin composition pellets;

[0067] (4) Set the nozzle temperature of the injection molding machine to 335°C, the temperature of the three stages to 310°C / 335°C / 330°C, the mold temperature to 120°C, the cooling time to 10s, the injection pressure to 3.5Mpa, and the holding pressure to 4Mpa and the holding time is 5s;

[0068] (5) Put the thermoplastic resin composition pellets obta...

Embodiment 3

[0070] The formula of thermoplastic resin composition is as follows:

[0071]

[0072] Preparation:

[0073] (1) Dry the high-temperature nylon in an oven at 110°C for 4 hours;

[0074] (2) Set the four stages of processing and melting temperature of the twin-screw extruder to 265°C / 280°C / 290°C / 285°C, the head temperature to 280°C, set the speed of the main engine and the speed of the cutting machine to 100rpm / min and 300rpm / min, water cooling;

[0075] (3) adding the dried thermoplastic resin and auxiliary agent into the twin-screw extruder set in step (2) to obtain thermoplastic resin composition pellets;

[0076] (4) Set the nozzle temperature of the injection molding machine to 335°C, the temperature of the three stages to 310°C / 335°C / 330°C, the mold temperature to 120°C, the cooling time to 10s, the injection pressure to 3.5Mpa, and the holding pressure to 4Mpa and the holding time is 5s;

[0077] (5) Put the thermoplastic resin composition pellets obtained in step...

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Abstract

The invention provides an electric-insulation thermoplastic resin composition which is prepared from the following raw materials in parts by mass: 60-90 parts of thermoplastic resin, 10-40 parts of reinforcing filler, 1-3 parts of compatilizer, 1-3 parts of plasticizer and 1-3 parts of coupling agent. The electric-insulation thermoplastic resin composition has the advantages of excellent electric insulation property and higher compressive strength. The breakdown strength can reach 30 kV / mm, the dielectric loss is 10<-3> order of magnitude, and the volume resistivity is 10<16> order of magnitude.

Description

technical field [0001] The invention relates to an electrical insulating material, in particular to an electrical insulating thermoplastic resin composition and a preparation method thereof. Background technique [0002] At present, electrical packaging generally adopts solid insulation packaging. Thermosetting epoxy resin or silicon micropowder is mainly used for solid insulation packaging of medium voltage switch primary equipment, such as vacuum circuit breakers, solid insulation ring network cabinets, and switchgears. Thermosetting epoxy resin is used. For example, the traditional embedded vacuum circuit breaker uses thermosetting epoxy resin as the packaging material, and the conductive parts such as the vacuum interrupter and the conductive terminal are encapsulated into an embedded pole through the automatic pressure gel process (APG), and then assembled into a circuit breaker. . The conductive parts such as the vacuum interrupter and conductive terminals in the sol...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L77/00C08L81/02C08L69/00C08L51/06C08K13/04C08K7/14C08K5/12C08K5/5415C08K3/34C08K3/30C08K5/56C08K3/22
Inventor 杨威尹立张翀张卓陈新
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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