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Creep-resistant long glass fiber reinforced polypropylene material and preparation method and application thereof

A polypropylene material and long glass fiber technology, applied in the field of long glass fiber reinforced polypropylene material and its preparation, can solve the problems of only focusing on material processing, mechanical and thermo-oxidative aging properties, and unable to provide material creep resistance, etc. Achieve the effect of avoiding uneven dispersion of glass fiber, highlighting mechanical properties and impact resistance, and uniform flow

Inactive Publication Date: 2015-02-11
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing long glass fiber technology often only focuses on material processing, mechanics and thermo-oxidative aging performance itself, fails to fully consider more practical application performance, and cannot provide reasonable methods and sufficient implementation cases to improve the creep resistance of materials Transformative

Method used

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  • Creep-resistant long glass fiber reinforced polypropylene material and preparation method and application thereof
  • Creep-resistant long glass fiber reinforced polypropylene material and preparation method and application thereof
  • Creep-resistant long glass fiber reinforced polypropylene material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Example 1: Preparation of creep-resistant long glass fiber reinforced polypropylene material and its use in front-end frame of automobile

[0056] Prepare the materials according to the formula described in Table 1. The cross-section diagram of the impregnation head is shown in figure 1 , where A is the glass fiber pre-dispersion area, B is the resin double-sided infiltration glass fiber area, C is the glass fiber redispersion area, 1 is the impregnation channel, 2 is the long glass fiber, 3 is the inlet, 4 is the tension roller, 5 Channel for distributing both sides of resin, 6 for calender roll, 7 for glass fiber redispersion channel, 8 for outlet. Weigh the other components except the long glass fiber according to their dosage ratio, after mixing evenly, add the twin-screw extruder with the length-to-diameter ratio of 48:1, melt and knead at the temperature of 220-250°C, extrude and inject Resin double-sided distribution flow channel 5; continuous long glass fiber ...

Embodiment 2

[0060] Example 2: Preparation of creep-resistant long glass fiber reinforced polypropylene material applied to automobile sunroof frame

[0061] Materials were prepared according to the formula described in Table 2. Weigh the other components except the long glass fiber according to their dosage ratio, mix them evenly, add them into a twin-screw extruder with a length-to-diameter ratio of 40:1, melt and knead at a temperature of 250-350°C, extrude and inject The resin double-sided distribution flow channel 5; the continuous long glass fiber 2 enters the impregnation flow channel 1 from the entrance 6 of the glass fiber pre-dispersion area A, passes through the tension roller 4, and enters the resin double-sided infiltration glass fiber area B, and the upper and lower two sides After the side-injected resin is in contact, it passes through the calender roller 6 and enters the glass fiber redispersion zone C, where it is further impregnated in the glass fiber redispersion flow c...

Embodiment 3

[0064] Example 3: Preparation of creep-resistant long glass fiber reinforced polypropylene material applied to electric tool base

[0065] Materials were prepared according to the formulations described in Table 3. Weigh the other components except the long glass fiber according to their dosage ratio, mix them evenly, add them into a twin-screw extruder with a length-to-diameter ratio of 32:1, melt and knead at a temperature of 180-280°C, extrude and inject The resin double-sided distribution flow channel 5; the continuous long glass fiber 2 enters the impregnation flow channel 1 from the entrance 3 of the glass fiber pre-dispersion area A, passes through the tension roller 4, and enters the resin double-sided infiltration glass fiber area B, and the upper and lower two sides After the side-injected resin is in contact, it passes through the calender roller 6 and enters the glass fiber redispersion zone C, where it is further impregnated in the glass fiber redispersion flow ch...

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Abstract

The invention belongs to the technical field of polypropylene composite materials and discloses a creep-resistant long glass fiber reinforced polypropylene material and a preparation method and application thereof. The material contains the following ingredients in percentage by weight: 34-78.6% of polypropylene, 20-50% of long glass fibers, 0.1-2% of nucleating agent, 1-8% of glass fiber compatibilizer, 0.1-2% of antioxidant, 0.1-2% of lubricant and 0.1-2% of odor absorbent. According to the creep-resistant long glass fiber reinforced polypropylene material and the preparation method and application thereof, the long glass fibers are used for reinforcing, meanwhile, the creep resistance of the polypropylene material is greatly improved by adding an alpha-crystal nucleating agent jointly, independently-designed double-sided fusing and impregnating equipment is used for producing, the glass fibers are uniformly dispersed in produced members after the obtained material is subjected to injection molding, no glass fiber aggregated fishbone is exposed, and the performance is more stable and more uniform; the prepared long glass fiber reinforced polypropylene material has the advantages that the mechanical properties and impact resistance are outstanding, and meanwhile, good creep resistance is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of polypropylene composite materials, in particular to a creep-resistant long glass fiber reinforced polypropylene material and its preparation method and application. Background technique [0002] Long glass fiber reinforced polypropylene material has the advantages of light weight, high strength, high rigidity, good impact resistance, excellent low temperature performance and good dimensional stability. It is often used to replace engineering plastics and even metal materials in practical applications. In recent years, with the continuous development of automobile lightweight, long glass fiber reinforced polypropylene materials are widely used in the automobile industry for making front-end modules, door panel modules, instrument panel skeletons, bottom guards and rearview mirror brackets, etc. Become a model of replacing steel with plastic, saving energy and reducing emissions. In addition to passing a s...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L53/00C08L51/06C08K13/04C08K7/14
CPCC08L23/12C08K2201/003C08K2201/014C08L23/14C08L2205/025C08L2205/03C08L2205/24C08L2314/02C08L2314/06
Inventor 王琪李永华张超陈春华罗忠富丁超叶南飚
Owner TIANJIN KINGFA NEW MATERIAL
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