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Carbon fibre bar containing super fine and preparation thereof

A technology of ultra-fine powder and carbon fiber rods, which is applied in the field of composite materials, can solve the problems of difficult matching of composite material molding process, difficulty in uniform dispersion of nano-scale and micron-scale particles, etc., and achieve uniform appearance, tensile strength and bending strength performance Excellent, good surface regularity

Active Publication Date: 2009-03-04
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that it is difficult to match the existing general-purpose addition method with the composite material forming process, and it is difficult to uniformly disperse the nano-scale and micron-scale particles in the resin. Further optimize the pultrusion composite material forming process to provide people with A carbon fiber rod containing ultrafine powder and its preparation method, filling the gap in the existing pultrusion process system filled with nano or micron powder

Method used

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  • Carbon fibre bar containing super fine and preparation thereof
  • Carbon fibre bar containing super fine and preparation thereof
  • Carbon fibre bar containing super fine and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Vinyl ester resin (100 parts), low-temperature initiator (1.5 parts), high-temperature initiator (1.5 parts), and release agent (1 part) were mixed uniformly with a low-speed stirrer. In addition, the dried and dehydrated ZrC (18 parts) with a particle size of 40 nm was infiltrated with a coupling agent (3 parts) under stirring, and then treated with ultrasonic dispersion for 40 minutes to obtain a mixed solution. The 8K carbon fiber yarn is drawn into a mold with a diameter of 0.70mm by needle and thread, and dipped in glue. Start the air compressor and rod drawing machine, adjust the three-stage heating temperature (the first temperature zone is 70±5°C, the second temperature zone is 110±5°C, the third temperature zone is 135±5°C), and select the appropriate traction speed for continuous Stable pultruded carbon fiber rod. The obtained carbon fiber rods have an average diameter of 0.75 mm. After testing, the carbon fiber content is 67%, and the Zr content is 5.0%. R...

Embodiment 2

[0048] Unsaturated polyester resin (100 parts), high temperature curing agent (1 part), high temperature initiator (1 part), medium temperature initiator (1 part), low temperature initiator (0.7 part), mold release agent (3 parts) , low shrinkage agent (15 parts), mix well with a low-speed mixer. In addition, in the stirring state, the ZrB with a particle size of 2.0 μm has been dried and dehydrated 2 (30 parts) soaked with coupling agent (2 parts), and then treated with an internal cutting emulsifier, controlling the speed at 3000-5000rpm, and the time is 20-30min, so that the mixture is uniformly stirred at a high speed until it meets the predetermined viscosity value. Stir During the process, the temperature of the glue solution was kept at 30°C±2°C. At the same time, the 24K carbon fiber yarn is drawn into a mold with a diameter of 1.2mm by needle and thread, and dipped in glue. Start the air compressor and rod drawing machine, adjust the three-stage heating temperature,...

Embodiment 3

[0050] Bisphenol A type epoxy resin (100 parts), curing agent (6 parts), accelerator (2 parts), toughening agent (12 parts), release agent (3 parts), diluent (5 parts), Mix well with mixer on low speed. In addition, soak the dried and dehydrated ZrC (7 parts) with a particle size of 40nm and HfC (7 parts) with a particle size of 1.2μm with a coupling agent (3 parts) in a stirring state, and first process it with an internal emulsifier , control the rotation speed at 4500rpm, and the time is 20min, so that the mixture is uniformly stirred at a high speed, and then it is treated with ultrasonic dispersion method for 20min to prepare the mixture, and the temperature of the constant temperature system of the dipping tank is set at 60±5°C. At the same time, the 66K carbon fiber yarn is drawn into a mold with a diameter of 2.0 mm by needle and thread, and dipped in glue. Start the air compressor and rod drawing machine, adjust the three-stage heating temperature (the first temperat...

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Abstract

The invention relates to a carbon fiber stick containing ultra-thin powder and a preparation method thereof. The carbon fiber stick is compounded and prepared by taking carbon fibers, ultra-thin powder and thermosetting resins; wherein, the content of the carbon fiber is larger than 55 percent; the content of the ultra-thin powder filled in the carbon fibers is within 10 percent and the rest is the thermosetting resins. The preparation method thereof includes the following steps: 1) the thermosetting resins are used as a substrate, the carbon fibers are used as reinforcement and an accessory ingredient corresponding to the resin liquid is added in the resin liquid to prepare a pre-mixed liquid; 2) after the ultra-thin powder is completely dipped by a coupling agent, the ultra-thin powder is uniformly dispersed into the pre-mixed liquid to prepare a mixed liquid; 3) after the carbon fibers are completely dipped in the mixed liquid, the carbon fiber stick containing the ultra-thin powder is manufactured by adopting a pultrusion method. A solid fabric shaped by the carbon fiber stick can form a prefabricated part of compound materials containing the ultra-thin powder. The carbon fiber stick can be applied to the construction reinforcement industry as well.

Description

technical field [0001] The invention relates to a carbon fiber-reinforced thermosetting resin-based pultrusion composite material, in particular to a carbon fiber rod containing ultrafine powder added in a pultrusion process and a preparation method thereof, belonging to the field of composite materials. Background technique [0002] Carbon fiber / thermosetting resin pultruded carbon fiber rod is a high-performance composite material, which has a series of excellent properties such as high specific strength, high specific modulus, fatigue resistance, creep resistance and small thermal expansion coefficient. Epoxy, vinyl ester and other resins have the characteristics of corrosion resistance, high transverse mechanical properties and good heat resistance, and are widely used in various fields of national economy. Pultrusion is an important method to manufacture high fiber volume content, high performance, low cost, continuous processing composite materials. [0003] Research ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/10C08L63/00C08L67/06C08K7/06C08K3/14C08K3/38C08K3/22C08J5/04B29C70/52
Inventor 张建钟胡健明胡方田李博朱建勋汤丹芬戴方毕林杰奇
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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