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Gas barrier material, and preparation method thereof

A gas barrier and barrier technology, which is applied in the field of gas barrier materials and their preparation, can solve the problems of high areal density, hard skin material, increased airship weight, etc., and achieves the effect of simple preparation method and easy mass production.

Inactive Publication Date: 2019-07-09
KUANG CHI CUTTING EDGE TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface density of the multi-layer composite skin material currently used is relatively high, which increases the weight of the airship, and the skin material prepared when PET is used as a barrier layer is relatively hard.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The preparation method of the gas barrier material provided by the present invention comprises: mixing a base resin, a barrier resin, and a peroxide together to obtain a blend, and molding the blend to obtain a gas barrier film or a gas barrier sheet. In the preparation method, the mass ratio of the matrix resin to the barrier resin is 50-70:30-50, wherein the mass fraction of the peroxide in the blend is 0.5%-2%, preferably, the peroxide The mass fraction in the blend is 1%, and the gas barrier material with the best barrier performance can be obtained by blending these three components at the same time. In the preparation method, the base resin includes thermoplastic polyurethane resin, preferably, the base resin includes thermoplastic polyether polyurethane resin or thermoplastic polyester polyurethane resin. The barrier resin is selected from one or more combinations of ethylene-vinyl alcohol copolymer (EVOH), vinylidene chloride copolymer, polyethylene naphthalate,...

Embodiment 1

[0028] According to the number of parts by mass, 70 parts of thermoplastic polyester polyurethane resin, 30 parts of EVOH resin (E105B) and 1 part of DCP were blended in the torque rheometer to obtain a homogeneous blend. The above-mentioned blend was hot-pressed at a temperature of 190° C. and a pressure of 10 MPa to obtain a gas barrier material.

Embodiment 2

[0030] In parts by mass, 60 parts of thermoplastic polyester polyurethane resin, 40 parts of EVOH resin (E105B) and 1 part of DCP are blended in a torque rheometer to obtain a homogeneous blend, which is heated at 190 by hot pressing. The above blend was hot-pressed at a temperature of °C and a pressure of 10 MPa to obtain a gas barrier material.

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Abstract

The invention provides a preparation method of a gas barrier material. The preparation method comprises following steps: a matrix resin, a high barrier performance resin, and a peroxide are subjectedto blending, and an obtained mixture is subjected to moulding so as to obtain the gas barrier material. According to the preparation method, thermoplastic polyurethane and high barrier performance resin are combined, and the phase morphology of the high barrier performance resin in the matrix resin is adjusted to prepare gas barrier membranes or gas barrier sheets excellent in gas barrier performance. The preparation method is simple, is convenient for large scale production, is suitable for preparation of any thermoplastic polyurethane based gas barrier materials, and can be widely used in preparation of skin materials in aviation spaceflight field such as skin materials on ships and floating equipment.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a gas barrier material and a preparation method thereof. Background technique [0002] In recent years, airships have been widely used in military and civilian fields due to their advantages such as long time in the air, energy saving, environmental protection, and economy, especially stratospheric airships and hybrid large-capacity airships have become current research hotspots. As an important part of the low-to-medium altitude blimp, the airship bladder plays the role of maintaining helium, providing buoyancy, and providing an installation platform for components. The main performance indicators of airship skin materials include strength, barrier properties, weather resistance, and machinability. The performance of the skin material directly affects the application performance of the airship, such as the standing height, continuous flight time, payload and service life. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L23/08C08L75/08C08L27/08C08L67/02C08K5/14
CPCC08L27/08C08L75/06C08L75/08C08L2201/14C08L23/0861C08K5/14C08L67/02
Inventor 不公告发明人
Owner KUANG CHI CUTTING EDGE TECH LTD
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