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A kind of lightweight high wave-transmitting composite material and preparation method thereof

A composite material and high-transparency technology, applied in the field of materials, can solve problems such as inability to meet the matching requirements of ultra-high temperature processes, and achieve the effects of easy control of the foaming process, fast decomposition speed, and uniform cells

Active Publication Date: 2021-01-01
NANJING JULONG SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the unique properties of special engineering plastics, there is no report on its micro-foaming materials. The main reason is that the common foaming agents currently on the market cannot meet the matching requirements of its ultra-high temperature process.

Method used

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  • A kind of lightweight high wave-transmitting composite material and preparation method thereof
  • A kind of lightweight high wave-transmitting composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A method for preparing a lightweight high wave-transmitting composite material, comprising the following steps:

[0037] Step 1: Prepare raw materials: 55 parts of polyetheretherketone with a melt index of 90g / 10min and a crystallinity of 30%, 5 parts of polyethersulfone with a tensile strength of 90MPa, 40 parts of basalt fiber, 5 parts of magnesium carbonate, ethylene 1 part of dilauric acid amide, wherein the sizing agent for basalt fiber is polyimide emulsion

[0038] Step 2: Add polyether ether ketone, polyether sulfone, and ethylene bislauric acid amide into the mixer according to parts by weight, and pre-mix for 3 minutes to obtain a mixture;

[0039] Step 3: Add the obtained mixture into the twin-screw extruder through the hopper, introduce the basalt fiber into the extruder through the side feeder, and undergo meshing plasticization, mixing, extrusion, drawing, air-drying, and granulation to obtain A fiber-reinforced polyetherketone composite material, wherein...

Embodiment 2

[0042] A method for preparing a lightweight high wave-transmitting composite material, comprising the following steps:

[0043] Step 1: Prepare raw materials: 70 parts of polyether aromatic ketone with a melt index of 20g / 10min and a crystallinity of 20%, 20 parts of polyethersulfone with a tensile strength of 85MPa, 10 parts of quartz fiber, 1 part of sodium nitrate, silicone 0.2 part, wherein, the sizing agent of quartz fiber is nylon emulsion;

[0044] Step 2: Add polyether aryl ketone, polyether sulfone, and silicone into the mixer according to parts by weight, and pre-mix for 6 minutes to obtain a mixture;

[0045] Step 3: Add the obtained mixture into the twin-screw extruder through the hopper, introduce the quartz fiber into the extruder through the side feeder, and undergo meshing plasticization, mixing, extrusion, drawing, air-drying, and granulation to obtain A fiber-reinforced polyetherketone composite material, wherein the extrusion temperature is 280-380°C;

[0...

Embodiment 3

[0048] A method for preparing a lightweight high wave-transmitting composite material, comprising the following steps:

[0049] Step 1: Prepare raw materials: 75 parts of polyether ether ketone ketone with a melt index of 100g / 10min and a crystallinity of 40%, 10 parts of polyethersulfone with a tensile strength of 95MPa, 20 parts of basalt fiber, 4 parts of magnesium hydroxide, 0.5 part of ethylene bislauric acid amide, wherein, the sizing agent of basalt fiber is polyurethane emulsion;

[0050] Step 2: Add polyether ether ketone ketone, polyether sulfone, and ethylene bislauric acid amide into the mixer according to parts by weight, and pre-mix for 5 minutes to obtain a mixture;

[0051] Step 3: Add the obtained mixture into the twin-screw extruder through the hopper, introduce the basalt fiber into the extruder through the side feeder, and undergo meshing plasticization, mixing, extrusion, drawing, air-drying, and granulation to obtain A fiber-reinforced polyetherketone co...

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Abstract

The invention discloses a light high-wave-transmissivity composite material and a preparation method thereof, and belongs to the technical field of materials. The light high-wave-transmissivity composite material is prepared from the following components in parts by weight: 55-75 parts of a polyether ketone material, 5-20 parts of polyether sulfone, 10-40 parts of a reinforcement, 1-5 parts of a foaming agent and 0.2-1 part of a dispersing agent. According to the light high-wave-transmissivity composite material and the preparation method thereof, the thermoplastic polyether ketone material with high heat resistance and high strength is adopted as a base body, inorganic fiber with high strength and modulus and high wave transmissivity is attached to the base body to serve as the reinforcement, so that the high-wave-transmissivity thermoplastic composite material is prepared, moreover, a micro-foaming technology is adopted, so that the high-wave-transmissivity material which is lighteris obtained on the premise that the performance requirements of high wave transmissivity, low loss, high temperature resistance, high rigidity, high strength, stable size and the like of a radome material are met, the specific gravity of the material is decreased by 25% or more, and the weight reduction requirement for a product is met; in addition, the material can be directly subjected to extrusion and injection molding, and the product efficiency is high.

Description

technical field [0001] The invention relates to a wave-transparent material and a preparation method thereof, in particular to a lightweight high-wave-transmission composite material and a preparation method thereof, belonging to the field of material technology. Background technique [0002] The wave-transparent material is a material that can pass through electromagnetic waves and hardly change the properties (including energy) of electromagnetic waves. It is mainly used in guiding radar radomes, hypersonic aircraft radomes, space shuttle radomes, satellite radomes, and warning radar antennas. Covers, weather radar radome, thin-walled ground radome, mobile communication base station radome, vehicle radome and other fields. In practical applications, the dielectric constant and dissipation factor are two important indicators to measure the wave-transmitting ability of wave-transparent materials. High temperature resistance, high rigidity, dimensional stability, flame retar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/16C08L71/10C08L81/06C08K13/06C08K9/04C08K7/10C08K3/26C08K5/20C08K3/28C08K3/22C08J9/08
CPCC08J9/0028C08J9/0066C08J9/0085C08J9/0095C08J9/08C08J2203/02C08J2361/16C08J2371/10C08J2481/06
Inventor 王滨刘曙阳蒋顶军王笃金王峰
Owner NANJING JULONG SCI&TECH CO LTD
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