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Continuous fiber reinforcement polybutylene terephthalate material and preparation method

A technology of polybutylene terephthalate and continuous fiber, which is applied in the field of continuous fiber reinforced polybutylene terephthalate material and its preparation, can solve the problems of decreased impact toughness and failure to achieve it, and achieve improvement The effect of rigidity and strength, high production efficiency, and excellent hydrolysis resistance

Active Publication Date: 2015-02-25
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the rigidity of the material increases, but the impact toughness decreases significantly, and the effect of strengthening and toughening at the same time is not achieved.

Method used

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  • Continuous fiber reinforcement polybutylene terephthalate material and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The invention provides a high-strength, high-toughness, hydrolysis-resistant continuous fiber-reinforced polybutylene terephthalate material (hereinafter referred to as high-resistance material), the cutting length of the material is 11-13 mm, and the particle size is 2.0-4.0 mm.

[0042] (1) Drying preparation: put the polybutylene terephthalate raw material in a dryer, drying temperature: 95°C; drying time: 8h;

[0043] (2) Mixing preparation; 700 parts of polybutylene terephthalate, 35 parts of compatibilizer ethylene-acrylate-glycidyl methacrylate (GMA), 9 parts of antioxidant, wherein antioxidant The weight ratio of agent 1010 to antioxidant 168 is 1:2, 5 parts of lubricant ethylene-acrylic acid copolymer wax (AC540A), 15 parts of crosslinking agent triglycidyl isocyanurate, 8 parts of antihydrolysis agent high molecular weight Add polycarbodiimide to the high-speed mixer in turn, control the mixing temperature at 55°C, stop the mixing time after 4 minutes, and then ...

Embodiment 2

[0050] The high resistance material is prepared by the following method, which includes the following steps:

[0051] (1) Drying preparation: put the polybutylene terephthalate raw material in a dryer, drying temperature: 95°C; drying time: 8h;

[0052] (2) Mixing preparation; 600 parts of polybutylene terephthalate, 35 parts of compatibilizer ethylene-acrylate-glycidyl methacrylate (GMA), 9 parts of antioxidant, wherein antioxidant The weight ratio of agent 1010 to antioxidant 168 is 1:2, 5 parts of lubricant ethylene-acrylic acid copolymer wax (AC540A), 15 parts of crosslinking agent triglycidyl isocyanurate (TGIC), 8 parts of antihydrolysis agent Add high molecular weight polycarbodiimide (Stabaxol P) into the high mixer one by one, control the mixing temperature at 55°C, stop the mixing time after 4min, and then add the mixed material into the hopper of the extruder For standby, the drying temperature of the extruder hopper is set to 85°C;

[0053] (3) Preparation of hig...

Embodiment 3

[0059] The high resistance material is prepared by the following method, which includes the following steps:

[0060] (1) Drying preparation: put the polybutylene terephthalate raw material in a dryer, drying temperature: 95°C; drying time: 8h;

[0061] (2) Mixing preparation; 500 parts of polybutylene terephthalate, 35 parts of compatibilizer ethylene-acrylate-glycidyl methacrylate (GMA), 9 parts of antioxidant, wherein antioxidant The weight ratio of agent 1010 to antioxidant 168 is 1:2, 5 parts of lubricant ethylene-acrylic acid copolymer wax (AC540A), 15 parts of crosslinking agent triglycidyl isocyanurate (TGIC), 8 parts of antihydrolysis agent It is high molecular weight polycarbodiimide (Stabaxol P), which is added to the high mixer in sequence, the mixing temperature is controlled at 55°C, the mixing time is stopped after 4min, and then the mixed material is added to the hopper of the extruder Standby, the drying temperature of the extruder hopper is set to 85 °C;

...

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Abstract

The invention relates to a continuous fiber reinforcement polybutylene terephthalate material and a preparation method. The material comprises the following components in parts by weight: 500-700 parts of polybutylene terephthalate, 300-500 parts of continuous fiber reinforcer, 25-45 parts of compatilizer, 6-10 parts of antioxygen, 4-8 parts of lubricant, 12-18 parts of coupling agent and 5-15 parts of anti-hydrolytic agent. Compared with the prior art, the preparation method is reasonable in design, is simple in operation and is strong in practical applicability. The continuous fiber reinforcement polybutylene terephthalate material is adopted, so that the length of fibers in prepared part can be kept to be 3-6mm, and thereby, the rigidity and the strength of the material are greatly increased, and meanwhile, the shock resistance and the heat resistance of the material are obviously improved. Moreover, the continuous fiber reinforcement polybutylene terephthalate material has long-term anti-hydrolytic stability and chemical corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a continuous fiber reinforced polybutylene terephthalate material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate, English name Polybutylece Terephthalate (referred to as PBT), PBT is milky white translucent to opaque, crystalline thermoplastic polyester. It has high heat resistance, toughness, fatigue resistance, self-lubrication, low friction coefficient, weather resistance, low water absorption, only 0.1%, and still maintains various physical properties (including electrical properties) and electrical insulation in a humid environment. However, volume resistance and dielectric loss are large. Resistant to hot water, alkalis, acids, oils, but easily corroded by halogenated hydrocarbons, poor hydrolysis resistance, rapid crystallization at low temperature, good formability. The disadvantage is that the notched impact strength ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K13/04C08K7/14B29C47/92B29C45/78B29C48/92
CPCB29C47/92B29B9/14B29B7/005B29B7/007B29B7/46B29B7/72B29B7/7461B29B7/90B29B9/06B29B9/12B29C48/04B29C48/92B29C2948/9259B29C2948/92638B29C2948/92723B29C2948/92828B29C2948/92885B29C2948/92895B29C2948/92923C08K7/14C08L23/0884C08L67/02
Inventor 蒋超杰
Owner HEFEI GENIUS NEW MATERIALS
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