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A kind of open-cell noise-reducing heat-resistant polyamide material and its preparation method and application

A polyamide and noise reduction technology, applied in the field of polyamide materials and its preparation, can solve the problems of poor noise reduction effect of polyamide materials, closed cells of hollow glass microspheres, complete broken hollow glass microspheres, etc.

Active Publication Date: 2021-07-09
JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect of poor noise reduction effect of existing polyamide materials, and provide a light-weight open-cell polyamide material with good noise reduction effect and heat insulation effect and its preparation method and application
However, when hollow glass microspheres are used to modify polyamide materials, during extrusion and injection molding, the hollow glass microspheres are likely to be completely broken or the hollow glass microspheres are completely closed. Materials are less effective at reducing noise

Method used

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  • A kind of open-cell noise-reducing heat-resistant polyamide material and its preparation method and application
  • A kind of open-cell noise-reducing heat-resistant polyamide material and its preparation method and application

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preparation example Construction

[0040] The preparation method of the open-cell noise-reducing heat-resistant polyamide material provided by the invention comprises the following steps:

[0041] S1, mixing materials:

[0042] Mixing the hollow glass microspheres, molybdenum disulfide and polytetrafluoroethylene evenly to obtain hollow glass microsphere powder;

[0043] uniformly mixing the polyamide, lubricant and antioxidant to obtain the main ingredient;

[0044] S2. Melt extrusion granulation:

[0045] The main material is fed from the main feed port of the twin-screw extruder through a weighing scale to measure loss in weight, and the hollow glass microsphere powder is fed from the first side feed port of the twin-screw extruder near the main feed port. Feed in weight loss through metering scale, and the chopped glass fiber is fed through the second side feeding port of the twin-screw extruder through metering weight loss feeding in the twin-screw extruder, each material is melted and extruded in the tw...

Embodiment 1-4

[0053] S1, mixing materials:

[0054] Put the hollow glass microspheres, molybdenum disulfide and polytetrafluoroethylene into a high-speed mixer, mix at a speed of 600r / min for 2min, mix well and evenly to form hollow glass microsphere powder, and set aside;

[0055] Put PA6, calcium stearate and copper salt antioxidants into a low-speed mixer, mix at a speed of 100r / min for 5min, mix well and evenly to form the main ingredient, and set aside;

[0056] S2. Melt extrusion granulation: the main material is fed from the main feeding port of the twin-screw extruder through a metering scale to measure the loss in weight, and the hollow glass microsphere powder is separately fed from the second feeding port of the twin-screw extruder. The feed port on the 1st side is fed through the metering scale to measure the loss in weight, and at the same time, the chopped glass fiber is fed separately from the second side feed port of the twin-screw extruder through the metering scale to meas...

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Abstract

The invention belongs to the field of composite materials, and discloses a noise-reducing heat-resistant polyamide material with openings, a preparation method and application thereof. The preparation method of the open-pore noise-reducing heat-resistant polyamide material includes: S1, uniformly mixing hollow glass microspheres, molybdenum disulfide and polytetrafluoroethylene to obtain hollow glass microsphere powder; mixing polyamide, lubricant and polytetrafluoroethylene The antioxidant is mixed evenly to obtain the main material; S2. Feed the main material from the main feeding port of the twin-screw extruder, and feed the hollow glass microsphere powder from the first side of the twin-screw extruder near the main feeding port. The feeding port is measured and weighed for loss in weight, and the chopped glass fiber is measured and weighed for loss in weight from the second side feed port of the twin-screw extruder. After cooling and pelletizing, the heat-resistant polyamide material with open pores can be obtained. The polyamide material obtained by adopting the method provided by the invention has an open-cell structure, has light weight, noise reduction and heat insulation effects, and is very suitable for being used as an engine decoration cover material.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a polyamide material with opening, noise reduction and heat resistance effects, and a preparation method and application thereof. Background technique [0002] Polyamide (nylon, PA) has high mechanical strength, heat resistance, wear resistance, oil resistance, weak acid resistance, alkali resistance, general organic solvent resistance and electrical insulation. There are a wide range of applications in transportation, machinery, aerospace and other fields. Among them, the polyamide material used for the decorative cover of the engine needs to have the characteristics of high strength, good appearance, long-term heat aging resistance and light weight. At present, 30% glass fiber reinforced polyamide 6 (PA6-GF30) material or 10% Glass fiber is filled with 20% mineral reinforced PA6 (PA6-GF10-MD20) material. [0003] At home and abroad, the requirements for vehicle ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L27/18C08K13/04C08K7/14C08K7/28C08K3/30C08K5/098
CPCC08K2003/3009C08L77/02C08L27/18C08K13/04C08K7/14C08K7/28C08K3/30C08K5/098
Inventor 欧阳威猛
Owner JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD