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Preparation method of TiO2 plated type PU (polyurethane) or TPU (thermoplastic polyurethane) film anti-drag micro groove for airship skin

A technology of micro-groove and thin film, which is applied in the field of airship skin material preparation, can solve the problems of poor heat insulation, poor weather resistance, large size, etc., and achieve the effect of dense coating, good protection effect and strong absorption

Inactive Publication Date: 2012-09-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention aims to solve the problems of poor weather resistance, large resistance, poor heat insulation, low load and large size of the existing stratospheric airship skin, and provides a TiO-coated airship skin. 2 Preparation method of type PU or TPU film drag-reducing micro-groove

Method used

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  • Preparation method of TiO2 plated type PU (polyurethane) or TPU (thermoplastic polyurethane) film anti-drag micro groove for airship skin
  • Preparation method of TiO2 plated type PU (polyurethane) or TPU (thermoplastic polyurethane) film anti-drag micro groove for airship skin
  • Preparation method of TiO2 plated type PU (polyurethane) or TPU (thermoplastic polyurethane) film anti-drag micro groove for airship skin

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specific Embodiment approach 1

[0049] Specific embodiment 1: TiO plating for the skin of the airship in this embodiment 2 The preparation method of the drag-reducing micro-grooves of the PU or TPU film is carried out according to the following steps:

[0050] 1. Preparation of TiO 2 Sol precursor:

[0051] A, take by weighing tetrabutyl titanate, dehydrated alcohol, strong acid, deionized water and glacial acetic acid, wherein the ratio of the amount of material of tetrabutyl titanate, dehydrated alcohol, deionized water and glacial acetic acid is 1:10 : 3:1, the amount of tetrabutyl titanate and H in the strong acid + The ratio of the amount of the substance is 1: (0.6~1); the strong acid is concentrated hydrochloric acid, concentrated nitric acid or concentrated sulfuric acid;

[0052] b. Take two conical flasks, marked as A and B, divide the anhydrous ethanol measured in step a into 3 parts, 2 parts are placed in conical flask A, and 1 part is placed in conical flask B Then, the glacial acetic acid m...

specific Embodiment approach 2

[0064] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mass fraction of concentrated hydrochloric acid in step a is 37.5%, the mass fraction of concentrated nitric acid is 65%, and the mass fraction of concentrated sulfuric acid is 70%. Others are the same as the first embodiment.

specific Embodiment approach 3

[0065]Specific embodiment 3: This embodiment differs from specific embodiment 1 or 2 in that: the stirring in step b uses an electric stirrer, and the stirring speed is 150-180 r / min. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method of a TiO2 plated type PU (polyurethane) or TPU (thermoplastic polyurethane) film anti-drag micro groove for an airship skin, relating to a preparation method of an airship skin material. The invention solves the problems of poor weather fastness, large resistance, poor thermal insulation, low load and large volume of the traditional stratosphere airship skin. The preparation method comprises the steps of: preparing a TiO2 sol precursor solution; preparing an Al template, cleaning the template, and coating a release agent; ultrasonically cleaning a film, impressing under the conditions of 135-140 DEG C and 15-20kg / cm<2>, and preserving the pressure for 2-3h; and coating a TiO2 coating on the impressed film. The prepared TiO2 plated type PU or TPU film anti-drag micro groove has the advantages of remarkable grooves, good regularity and remarkable anti-drag effects, and plays important roles in reducing the volume of an airship, increasing the load and prolonging the air residing time; and the TiO2 coating has the function of more strongly absorbing ultraviolet, and can shield elemental oxygen, so that damage of the ultraviolet to the film is reduced, and the weather resistance is increased. The preparation method is used for preparing the airship skin material.

Description

technical field [0001] The invention relates to a preparation method of an airship skin material. Background technique [0002] Near space can also be called near space or near space. At the same time, this altitude is also the area where the stratosphere is located, above the layer of natural phenomena such as wind, rain, thunder, and lightning, and belongs to the high security zone. After entering the 21st century, the value of the special field of near space has been paid more and more attention by countries all over the world, and various military powers have regarded it as a new field of military struggle in the 21st century. In recent years, the application research of near-space airship as a communication and navigation platform has attracted worldwide attention. At present, in the process of developing near-space airships, the key technical issues involved are the focus of research by various countries. Since near-space airships are not low-altitude airships, many ...

Claims

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Application Information

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IPC IPC(8): B32B15/095B32B3/30C01G23/053B29C59/02B32B37/10B32B37/06B64C1/12
Inventor 刘宇艳马涛刘少柱刘羽熙刘振国王长国谭惠丰
Owner HARBIN INST OF TECH
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