Production process of damping underwater acoustic transmission plastic functional master batch

Abstract

The invention belongs to the field of high polymer materials, and relates to a production process of a damping underwater acoustic transmission plastic functional master batch. The production processis simple; raw material sources are wide; blending and modifying can be carried out with polyolefin plastic; the underwater acoustic transmission plastic can be prepared; when sound waves pass throughthe modified underwater acoustic transmission plastic, the sound waves are transmitted, just like a force acts on the underwater acoustic transmission plastic, the underwater acoustic transmission plastic generates elastic deformation and plastic deformation, after modification of the functional master batch, plastic deformation enables sound energy decline to be weakened, attenuation of sound energy is reduced along with increase of elasticity, hysteresis loss of the functional master batch can be reduced, the chain rotation degree of a molecular chain of a blend is increased, flexibility isenhanced, then attenuation of sound is weakened, and the effect of acoustic transmission of underwater sound is achieved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a production process of a sound-permeable plastic functional masterbatch for damping underwater sound. Background technique [0002] Functional masterbatch refers to the concentrate of various plastic additives. Adding additives directly in plastic processing is not easy to disperse, and the use efficiency is not high. Therefore, functional masterbatches are added in the form of color masterbatches, flame retardant masterbatches, etc. In the military, with the continuous development of underwater stealth technology, the sound wave scattering of underwater weapons and equipment is getting smaller and smaller, making it more and more difficult to be found and located. The long-distance and high-precision priority to find the enemy is the key to defeating the enemy with underwater weapons and equipment, which puts forward higher requirements for underwater detection techno...

AI Technical Summary

Problems solved by technology

In order to meet the ever-increasing requirements of sonar technology, people have carried out a lot of research and development in the aspects of sound transmission theory and material structure design. The shape design of the plastic structure achieves the effect of sound transmission, such as musical instrument audio, etc., but the existing rubber or thermoplastic polyurethane as the underwater sound transmission material has poor aging resistance, water resistance, and often fails to meet the requirements in terms of strength, such as CN201310598615.4 A high-performance underwater acoustic sound-permeable rubber material and its preparation method discloses "the preparation of an underwater acoustic sound-permeable rubber material with high sound permeability and temperature stability, high water tightness and excellent physical and mechanical properties

", but the aging resistance of rubber is poor. For example, CN201310598615.4 discloses a high-performance hydroacoustic sound-permeable rubber material and its preparation method "preparing a rubber material with high sound permeability and temperature stability, high water tightness and excellent physical and mechanical properties. Hydroacoustic sound-permeable rubber material

", but the aging resistance of rubber is poor. CN201910195562.9 A fluorosilane-modified polyether-type polyurethane water sound-transmitting material and its preparation method has excellent water resistance, cold resistance and sound transmission performance, but the resistance of polyurethane The aging performance is poor, and the sources of sound-transmitting polymers are greatly restricted and restricted. At present, there are no products and corresponding technologies of water-acoustic sound-permeable plastics with good performance on the market. The existing ones are represented by rubber or thermoplastic polyurethane. Sound-transmitting materials are also difficult to achieve a balance in sound transmission, pressure resistance, vibration reduction, weather resistance, corrosion resistance, etc., and the preparation process is complicated, the cost is high, and the use of materials is limited. At present, most of them are polyurethane elastic and rubber, which cannot It is widely applicable to the existing plastic materials with a huge amount of application. In order to solve the above problems, on the basis of the urgent need to develop underwater sound-permeable plastics with balanced performance, it is urgent to develop a damping underwater sound-permeable plastic functional matrix. Granule production process to meet existing technical needs and performance requirements

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