Graphene-aliphatic polyurethane composite adhesive and its application
A technology of aliphatic polyurethane and composite materials, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., to achieve good gloss retention, strong adjustability, and simple processes
Active Publication Date: 2021-07-16
SHENYANG AEROSPACE UNIVERSITY
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Problems solved by technology
This application method is a new type of adhesive coating preparation method, which is easy to operate, simple in process, excellent in material performance, and strong in environmental adaptability. To a certain extent, it solves the leakage and step difference caused by riveted parts such as aircraft skins. and seam defects, and is expected to be applied to a wider range of technical fields
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Embodiment 1
[0048] A kind of application of graphene-aliphatic polyurethane composite material adhesive, for preparing the graphene-aliphatic polyurethane adhesive coating that thickness is 0.4mm, its preparation method comprises the following steps:
[0049] (1) Weigh 0.016g, 0.032g, and 0.064g of graphite intercalation compounds, heat them in a constant temperature muffle furnace at 700°C for 1min, and after puffing, put them into three beakers respectively, using acetone as a solvent , oscillate and disperse until uniform through an ultrasonic cleaner, and finally put it into an electric heating constant temperature drying oven at 80 or 120°C to evaporate acetone to obtain the desired uniform expanded graphene;
[0050] (2) Use a syringe to draw 10 mL of aliphatic acrylic polyurethane component A into a beaker, repeat the operation three times, a total of four beakers are numbered 1-4.
[0051] (3) Put the three kinds of graphene obtained in (1) into No. 2-4 beakers respectively and mi...
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Abstract
A graphene-aliphatic polyurethane composite adhesive and its application. The graphene-aliphatic polyurethane composite material adhesive includes expanded graphene and aliphatic acrylic polyurethane; in terms of mass ratio, expanded graphene: (expanded graphene+aliphatic acrylic polyurethane)=(0.125~0.4):100. It is used to coat the surface or inside of the parts to be treated, and after curing at room temperature, a graphene-based polyurethane composite adhesive coating is obtained. The graphene-aliphatic polyurethane composite adhesive uses special graphene as a strengthening factor to improve the mechanical properties of the aliphatic polyurethane adhesive, and directly adds graphene to the finished product of aliphatic polyurethane to disperse evenly. The preparation method applied to the adhesive coating is easy to operate, simple in the process, excellent in material performance, and strong in environmental adaptability. To a certain extent, it solves defects such as leaky dimples, step differences, and seams produced by riveted parts such as aircraft skins. question.
Description
technical field [0001] The invention relates to the technical field of aerospace, in particular to the technical field of aircraft skin adhesive coating, in particular to a graphene-aliphatic polyurethane composite material adhesive and its application. Background technique [0002] The aircraft skin is an important part of the aircraft. It is a layer of aluminum alloy that maintains the shape of the aircraft and makes it have good aerodynamic properties. Most of the connections between the aircraft skins today use riveting technology, and riveting During the riveting process, there will be technological problems such as leaks, butt joints, and step differences. The occurrence of these problems will not only damage the aerodynamic performance of the aircraft, but also reduce the continuity and stealth of the aircraft. This is also a problem faced by the aerospace technology field. An important hidden danger. [0003] The existing aircraft skin is riveted and fixedly connect...
Claims
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IPC IPC(8): C09J175/14C09J11/04B05D7/24
CPCB05D7/24B05D2503/00B05D2601/20C08K2201/001C08L2201/08C08L2205/025C09J11/04C09J175/14C08L75/14C08K3/042
Inventor 孟庆实王彦龙李晓东门宇冯子明王巍王朔
Owner SHENYANG AEROSPACE UNIVERSITY