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Recycled carbon fiber reinforced thermoplastic resin composite material and preparation method thereof

A technology of resin composite materials and recycled carbon fiber, which is applied in the field of polymer material recycling, can solve the problems of low density, increased composition density, and high cost of composite materials, and achieve the effects of excellent mechanical properties, increased added value, and reduced pollution

Inactive Publication Date: 2014-04-09
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the density of glass fiber is relatively high, and the density of the composition obtained after filling the modified resin will also increase significantly, which will lead to a decline in the market competitiveness of the product. The improvement is limited, and the application in some occasions with high performance requirements will be limited
In order to further improve the performance of the modified thermoplastic composite material, and make the modified material lightweight, so that it can meet the application in the field of high performance requirements, one method is to use carbon fiber to reinforce the modified thermoplastic resin, such as patents CN201210124432, CN101831172, CN100368471C As mentioned above, the prepared composite material not only has high strength, excellent performance, but also low density; but the new carbon fiber is expensive, which also leads to the high cost of the composite material obtained by reinforcing and modifying it, which directly limits its wide use

Method used

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  • Recycled carbon fiber reinforced thermoplastic resin composite material and preparation method thereof
  • Recycled carbon fiber reinforced thermoplastic resin composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Weigh 20 parts of recycled carbon fiber in a high mixer, the length of carbon fiber is 10mm, and then add 0.1 part of silane coupling agent KH550 to surface treat the recycled carbon fiber.

[0025] (2) Weigh 80 parts of PC, 30 parts of MBS, 20 parts of triphenyl phosphate, 0.2 part of PTFE, 0.1 part of calcium stearate, 0.3 part of anti-1010, 0.1 part of anti-168 and mix them evenly in a high mixer.

[0026] (3) Add the uniformly mixed raw materials into the twin-screw extruder, melt and blend, extrude, and pelletize the strands to obtain the required recycled carbon fiber reinforced PC composite material. The temperature of each zone of the twin-screw extruder is: 230 in the first zone ℃, zone 2 240°C, zone 3 240°C, zone 4 250°C, zone 5 250°C, zone 6 260°C, zone 7 260°C, zone 8 265°C, zone 9 265°C, zone 10 265°C, machine head 260°C °C; screw speed 350rpm, aspect ratio L / D=30 / 1.

Embodiment 2

[0028] (1) Weigh 10 parts of recycled carbon fiber in a high mixer, the length of carbon fiber is 0.5mm, and then add 1 part of silane coupling agent KH560 to surface treat the recycled carbon fiber.

[0029] (2) Weigh 90 parts of PPS, 10 parts of aluminum hydroxide, 0.3 parts of A-C540A, 0.1 part of anti-1076, 0.1 part of anti-711, and 5 parts of 3000 mesh calcium carbonate in a high-mixer and mix them evenly.

[0030] (3) Add the uniformly mixed raw materials into the twin-screw extruder, melt and blend, extrude, and pelletize the strands to obtain the required recycled carbon fiber reinforced PPS composite material. The temperature of each zone of the twin-screw extruder is: 290 in the first zone ℃, zone 2 290°C, zone 3 300°C, zone 4 300°C, zone 5 305°C, zone 6 305°C, zone 7 310°C, zone 8 310°C, zone 9 315°C, zone 10 315°C, machine head 310°C °C; screw speed 250rpm, aspect ratio L / D=40 / 1.

Embodiment 3

[0032] (1) Weigh 30 parts of recycled carbon fiber in a high mixer, the length of carbon fiber is 6mm, and then add 3 parts of titanate coupling agent isopropyl tris(dodecylbenzenesulfonyl) titanate to surface treat recycled carbon fiber .

[0033] (2) Weigh 70 parts of PS, 10 parts of POE, 10 parts of magnesium hydroxide, 0.6 parts of polyethylene wax, 0.3 parts of anti-1098, 0.2 parts of anti-1212, and 5 parts of 2000 mesh talc powder in a high-mixer and mix them evenly.

[0034] (3) Add the uniformly mixed raw materials into the twin-screw extruder, melt and blend, extrude, and pelletize the strands to obtain the required recycled carbon fiber reinforced PS composite material. The temperature of each zone of the twin-screw extruder is: 160 in the first zone ℃, zone 2 160°C, zone 3 170°C, zone 4 170°C, zone 5 180°C, zone 6 180°C, zone 7 190°C, zone 8 190°C, zone 9 200°C, zone 10 200°C, machine head 190°C °C; screw speed 400rpm, aspect ratio L / D=50 / 1.

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Abstract

The invention relates to a recycled carbon fiber reinforced thermoplastic resin composite material and a preparation method thereof. The preparation method comprises the following steps: (1) weighing 5-40 parts of recycled carbon fiber according to a proportion, adding the recycled carbon fiber into a high-speed mixer, adding 0.1-3 parts of surface treating agent, and performing surface treatment on the recycled carbon fiber; (2) weighing 60-95 parts of thermoplastic resin, 0-30 parts of flexibilizer, 0-20 parts of fire retardant, 0-0.5 part of anti-drip agent, 0.1-0.6 part of lubricant, 0.1-0.5 part of antioxidant and 0-20 parts of filler according to the proportion, adding the raw materials into the high-speed mixer, and uniformly mixing the raw materials; (3) adding the uniformly mixed raw materials into a double-screw machine, and performing melt blending, extrusion, water cooling and strand pelletizing to obtain the recycled carbon fiber reinforced thermoplastic resin composite material. Compared with the prior art, the recycled carbon fiber reinforced thermoplastic resin composite material has the advantages of low density, excellent mechanical performance, low cost and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer material recycling, and in particular relates to a recycled carbon fiber reinforced thermoplastic resin composite material and a preparation method thereof. Background technique [0002] Carbon fiber composite materials (CFRP) have excellent properties such as light weight, high strength, and high modulus, which are unmatched by other glass fiber reinforced composite materials, so they are widely used in aerospace, automotive industry, rail transit, new energy , sporting goods and other high-tech industries. With the rapid development of the economy, the use of CFRP in various fields is increasing rapidly, and the waste resin produced is also increasing day by day, and the components in the waste CFRP are not degradable. If they are directly discarded into the environment, on the one hand, it will bring environmental harm On the other hand, these waste CFRP often contain about 60% of high value-a...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L81/02C08L25/06C08L59/00C08L23/06C08L55/02C08L67/02C08L27/06C08K13/06C08K9/06C08K9/04C08K7/06B29C47/92B29C48/92
CPCB29B7/46B29B7/72B29B7/7461B29B7/90B29B9/06B29B9/12B29B9/14B29C48/04B29C48/05B29C48/40B29C48/405B29C48/625B29C48/919B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895C08J5/042C08J5/06C08J2300/22C09K21/02C09K21/10C09K21/12
Inventor 袁角亮杨斌王新灵苏跃增刘媛
Owner SHANGHAI JIAO TONG UNIV
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