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Fiber reinforced PBT/ASA (polybutylece terephthalate/acrylonitrile styrene acrylate) alloy material with good weldability and preparation method of material

A fiber-reinforced and alloy material technology, applied in the field of fiber-reinforced PBT/ASA alloy materials and their preparation, to achieve the effects of improved compatibility, wide melting range, and good heat conduction efficiency

Active Publication Date: 2019-12-03
华合新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The laser-weldable glass fiber reinforced PBT resin provided in CN109233216 has also adopted a similar technical scheme, but has added a special absorber for laser welding, therefore, the application field of its technical scheme is also limited to this type of laser welding, It is not applicable to infrared welding and ultrasonic vibration welding with wider application and lower cost.

Method used

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  • Fiber reinforced PBT/ASA (polybutylece terephthalate/acrylonitrile styrene acrylate) alloy material with good weldability and preparation method of material
  • Fiber reinforced PBT/ASA (polybutylece terephthalate/acrylonitrile styrene acrylate) alloy material with good weldability and preparation method of material
  • Fiber reinforced PBT/ASA (polybutylece terephthalate/acrylonitrile styrene acrylate) alloy material with good weldability and preparation method of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Take by weighing PBT resin, ASA resin, heat conducting agent, toughening agent by the embodiment 1 data shown in table 1, mix homogeneously, obtain mixed raw material:

[0043] The dried mixed raw materials are placed in the main feeding bin of a tightly meshed co-rotating twin-screw extruder, and fed into the barrel of the extruder through the feeding screw; the surface-modified carbon fiber is placed in In the side feeding bin of the extruder screw, it is fed into the barrel of the extruder through the feeding screw. The diameter of the screw extruder used is 36mm, the length-to-diameter ratio L / D is 44, and the temperature of each zone of the main barrel from the feeding port to the exit of the machine head is set as: 160°C, 220°C, 230°C, 235°C, 240°C , 240°C, 240°C, the speed of the main machine is 250 rpm, and the above-mentioned fiber-reinforced PBT / ASA alloy material with good weldability is obtained after melt extrusion, granulation, drying and other processes. ...

Embodiment 2

[0047] Take by weighing PBT resin, ASA resin, heat conducting agent, toughening agent by the embodiment 2 data shown in table 1, mix homogeneously, obtain mixed raw material:

[0048] The dried mixed raw materials are placed in the main feeding bin of a tightly meshed co-rotating twin-screw extruder, and fed into the barrel of the extruder through the feeding screw; the surface-modified carbon fiber is placed in In the side feeding bin of the extruder screw, it is fed into the barrel of the extruder through the feeding screw. The diameter of the screw extruder used is 36mm, the length-to-diameter ratio L / D is 44, and the temperature of each zone of the main barrel from the feeding port to the exit of the machine head is set as: 160°C, 220°C, 230°C, 235°C, 240°C , 240°C, 240°C, the speed of the main machine is 250 rpm, and the above-mentioned fiber-reinforced PBT / ASA alloy material with good weldability is obtained after melt extrusion, granulation, drying and other processes. ...

Embodiment 3

[0050] Take by weighing PBT resin, ASA resin, heat conducting agent, toughening agent by the data of embodiment 3 shown in table 1, mix homogeneously, obtain mixed raw material:

[0051] The dried mixed raw materials are placed in the main feeding bin of a tightly meshed co-rotating twin-screw extruder, and fed into the barrel of the extruder through the feeding screw; the surface-modified carbon fiber is placed in In the side feeding bin of the extruder screw, it is fed into the barrel of the extruder through the feeding screw. The diameter of the screw extruder used is 36mm, the length-to-diameter ratio L / D is 44, and the temperature of each zone of the main barrel from the feeding port to the exit of the machine head is set as: 160°C, 220°C, 230°C, 235°C, 240°C , 240°C, 240°C, the speed of the main machine is 250 rpm, and the above-mentioned fiber-reinforced PBT / ASA alloy material with good weldability is obtained after melt extrusion, granulation, drying and other processe...

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Abstract

The invention relates to a fiber reinforced PBT / ASA (polybutylece terephthalate / acrylonitrile styrene acrylate) alloy material with good weldability and a preparation method of the material. The material is specifically prepared from the following raw materials in parts by weight: 35-65 parts of a PBT resin, 10-30 parts of an ASA resin, 3-10 parts of a heat conduction agent, 2-8 parts of a toughening agent and 10-30 parts of a surface modified carbon fiber, wherein the surface modified carbon fiber refers to a carbon fiber treated by using an acrylate prepolymer. As a conventional glass fiberreinforced material is replaced by the surface modified carbon fiber, on one hand, the surface of the modified carbon fiber is covered by the acrylate prepolymer, and the acrylate prepolymer has a good mutual bonding function with the ASA resin in a matrix, the dispersion and distribution situation of the ASA resin can be improved, and the welding solidness and the flatness of the PBT / ASA alloy material can be improved; and on the other hand, due to the modified carbon fiber, the PBT / ASA material is endowed with good mechanical properties, the heat conduction coefficient of the alloy materialcan be remarkably improved after the material is used together with a small amount of heat conduction aids, which is particularly important for avoiding the phenomenon of poor hot welding of the PBT / ASA material.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a fiber-reinforced PBT / ASA alloy material with good weldability and a preparation method thereof. Background technique [0002] The characteristics of polymer materials are closely related to the characteristic structure of their molecular chains. For example, polyethylene PE and polypropylene PP with saturated hydrocarbon molecular chain structures have good chemical resistance and weather resistance, while the molecular chains contain unsaturated Styrene butadiene rubber SBS with carbon-carbon double bonds is very easy to age and yellow; polyamide materials have excellent mechanical properties due to the formation of intermolecular hydrogen bonds due to polar amide groups; polycarbonate PC due to high rigidity The benzene ring molecular chain has extremely outstanding notch impact resistance. Therefore, for the research and application of modern polymer ma...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L33/20C08L23/08C08K9/04C08K7/06C08K3/04C08K7/18C08J5/06
CPCC08J5/06C08J2367/02C08J2433/20C08J2423/08C08K2201/011C08K2201/003C08K2201/004C08K9/04C08K7/06C08K3/041C08K7/18
Inventor 徐凯华
Owner 华合新材料科技股份有限公司
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