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Low-cost high-temperature pultrusion epoxy resin for smart energy carbon fiber resin based composite core

A technology based on carbon fiber resin and epoxy resin, which is applied in the field of low-cost high-temperature pultruded epoxy resin, which can solve the problems of easy cracking, breaking, difficulty in meeting the use requirements, and poor toughness of epoxy resin, so as to improve the resistance to moisture and heat aging performance, promoting fast curing, not easy to absorb the effect

Active Publication Date: 2015-12-23
FAR EAST CABLE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the epoxy resin used for carbon fiber resin-based composite core Tg at 190 ° C is expensive, which is 8 to 12 times the price of ordinary epoxy resin, resulting in high prices for carbon fiber resin-based composite wires. Carbon fiber is promoted in the State Grid Resin-based composite conductors are subject to great restrictions; due to the relatively high Tg of epoxy resin used for carbon fiber resin-based composite cores, the toughness of epoxy resin is relatively poor, carbon fiber composite conductors are generally used in harsh heavy ice areas , Large-span areas, if the prepared carbon fiber resin-based composite core has poor toughness, it is prone to cracking and breaking during use, and it is difficult to meet the increasing use requirements

Method used

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  • Low-cost high-temperature pultrusion epoxy resin for smart energy carbon fiber resin based composite core
  • Low-cost high-temperature pultrusion epoxy resin for smart energy carbon fiber resin based composite core

Examples

Experimental program
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Embodiment 1

[0017] The composition, proportions and models of this embodiment are shown in Table 1:

[0018] Table I

[0019]

[0020]

[0021] The cost and performance of the epoxy resin prepared in this embodiment are as follows:

[0022] The price of the epoxy resin system is 80-90 yuan / Kg, which is significantly lower than the existing 200 yuan / Kg.

[0023] Epoxy resin has a viscosity of 500-1000cps at 25°C.

[0024] The time for the viscosity of epoxy resin to double at 25°C is 10h.

[0025] The composite mandrel made by pultrusion of the epoxy resin prepared in this embodiment can pass through the 50D winding cylinder at a speed of 3r / min for 2min without skinning or cracking; Twist 360° at the speed of / min, hold for 2min, then straighten it, the core rod will not crack. The pultruded composite core rod is steadily applied to the radial pressure at a speed of 2mm / min, and can withstand a pressure above 40kN. The Tg of the pultruded composite core rod is 195~205℃. The tensile strength of t...

Embodiment 2

[0027] On the basis of Example 1, adding 10-20 parts of polyethersulfone will further improve Tg and toughness, among which Tg can be increased to 200-210℃, and the composite core will pass through the 45D winding cylinder at a speed of 3r / min for 2min. No skin, no cracking.

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Abstract

The invention discloses low-cost high-temperature pultrusion epoxy resin for a smart energy carbon fiber resin based composite core. The epoxy resin is characterized by comprising, in parts by mass, 80-100 parts of thermal-resistant epoxy resin, 10-15 parts of organosilicon epoxy resin, 6-8 parts of an organic silicon slipping agent, 100-160 parts of an anhydride curing agent, 2-4 parts of tertiary amine accelerants, 6-15 parts of kaolin, 2-6 parts of a release agent, 0.5-1 part of nano SiO2 and 0.2-0.4 parts of a coupling agent. The thermal-resistant epoxy resin is prepared by compounding various kinds of epoxy resin, and the comprehensive performance of the thermal-resistant epoxy resin can be improved; the anhydride curing agent is adopted, the operable time is long, the viscosity is low, the thermal deformation temperature is high, the price is low, and accordingly, the high-temperature pultrusion epoxy resin used for the carbon fiber resin based composite core for cable production is low in cost and high in rigidity and has a high Tg (glass transition temperature).

Description

Technical field [0001] The invention relates to a low-cost high-temperature pultrusion epoxy resin for a smart energy carbon fiber resin-based composite core. Background technique [0002] Epoxy resin (EP) is an important thermosetting resin with excellent bonding properties, wear resistance, mechanical properties, electrical insulation properties, chemical stability, high and low temperature resistance, low shrinkage, easy processing and molding and cost The advantages of low cost have been widely used in light industry, construction, machinery, aerospace and other fields. [0003] At present, the epoxy resin used for carbon fiber resin-based composite core with a Tg of 190℃ is expensive, 8-12 times the price of ordinary epoxy resin, resulting in the high price of carbon fiber resin-based composite wires. Resin-based composite wires are greatly restricted; because the epoxy resin used for carbon fiber resin-based composite cores has a relatively high Tg, and the toughness of epox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L81/06C08K9/06C08K3/34C08K3/36C08G59/42C08G59/58
Inventor 陈涛徐静郑忠敏李世霞陈来
Owner FAR EAST CABLE