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Dr. Chen, the top 500 building materials product manager in the United States, came to Green Valley to give special guidance on acoustic materials

Author:Site Editor     Publish Time: 2020-10-19      Origin:Site

On the afternoon of October 12th, Dr. Chen, the former product manager of a Fortune 500 building material company in the United States, visited Green Valley and talked about the concrete product categories and effective product integration construction at the core of the building acoustics to "enhance the core competition of the product Green Valley. "Strength" as the theme for special training. All employees of Green Valley attended the meeting.

1.1

At the beginning of the report, Dr. Chen's humorous language style and wonderful and unique teaching concepts aroused great interest in Green Valley's staff uniforms. Dr. Chen is at the forefront of the building materials industry. Combining his more than 20 years of experience in the industry and the problems in the actual application of products, he started with a profound explanation of how to update the core competitiveness of products, improve product markets and marketing strategies.

1.2



Dr. Chen started from the perspective of building physics acoustics, building sound quality evaluation standards, and talked about sound pressure levels and the application of individual sound pressure.

Green Valley uses the spider web model to collect customer data and integrate market characteristics to optimize products, such as:

1.3

From the perspective of acoustics, combined with the characteristics of our products, Dr. Chen emphasized that in the new era of rapid technological change, we must be good at using integrated product features and the needs of the times, and timely update product features and product concepts. He believes that advanced concepts enable companies to go further; specific actions enable companies to go more stable; deep reflections make people go faster.

1.4



During the whole report session, Dr. Chen, eloquently, profound thoughts, advanced concepts, simple in-depth, thought-provoking, both in-depth theoretical guidance and years of practical verification, launched product education and first-class products in Green Valley The construction of core competitiveness and the improvement of Green Valley's high-quality talent training have a positive guiding role.

The two-hour coaching report ended in rounds of applause. After the report, the staff at the meeting still remained unsatisfied. They were impressed by Dr. Chen's commitment to the building materials industry for more than 20 years.

1.5



Green Valley employees have expressed that they have benefited a lot, and they will further change their concepts in future work and combine the core competitiveness of Green Valley products with market prospects and put them into practice. Effectively improve the core competitiveness of Green Valley products and continue to integrate demand to create demand for the new era and new market.



1. Acoustics, as a multi-field interdisciplinary subject, has been widely used in electronics, marine, architecture, environment, automobile, railway, aviation, medicine, earthquake, and voice interaction from its initial application in music to modern times. It has evolved from a branch of physics. , Developed into an important subject inseparable from real life.



2. The ultimate goal of acoustic research is to serve the human auditory senses-ears, which determines the importance of its position; and it is precisely because of the characteristics closely related to people that acoustics is not in the era of rapid development of manufacturing Arouse people's attention. Until the manufacturing industry reaches the bottleneck, people, as the initiator and ultimate beneficiary of technology and manufacturing, are not considered.


3. The simplest understanding of the source of sound is that vibration produces sound waves, and due to the different waveforms, there are three types of frequencies, high and low. The frequency band that the human ear can hear is: 20~20000Hz. But some animals such as elephants and dolphins can also hear the sound of 20hz. And everyone has different limits for the frequency band they listen to.


4. Common sound decibel value of acoustic angle:



常见的声音分贝值
声音种类声压级(分贝)声音种类声压级(分贝)
烈性炸药爆炸声170卡车90
火箭、导弹发射场150繁华街道80
步枪射击声130住宅内的厨房60
飞机发动机120正常谈话50
切割机工作110安静房间40
织布机车间内104轻声耳语30
发电机工作100树叶沙沙声20
冲床车间95农村静夜10
5. Separately block and absorb sound insulation. The best material for blocking audio is metal, but it is easy to form a misunderstanding here. In our daily contact, we understand that metal is the easiest medium to transmit sound. In fact, what he transmits is not sound waves but vibrations. Therefore, high-density metal is the best sound insulation material. It will reflect the sound waves of different frequencies to isolate the audio from spreading and transmitting. The material of Green Valley actually absorbs audio. Reduce the angle of vibration to achieve the function of reducing decibels.


6. The characteristics of the damping coefficient of our material: Damping: refers to the physical phenomenon that the shaking system or the vibrating system is blocked and the energy is dissipated over time. The meaning on the Internet is more difficult to understand, and the simple meaning is: a force that cancels each other out of vibration and audio. Thereby reducing the vibration frequency and audio ripple. As shown below:





7. Rubber is one of the commonly used damping materials and is widely used in the automobile industry and mechanical engineering. The best hard rubber damping coefficient is 1. And the harder the rubber, the better the performance. The information is as follows:



8. Domestic requirements for sound pressure level:


Standardized impact sound pressure level (dB) for the weighting of floor slabs between residential households: ≤65.


Weighted standardized impact sound pressure level (dB) of hotel floor slabs: floor slabs between guest rooms ≤55. That is, the sound pressure level produced by the original floor's own vibration combined with the sound insulation material, the final effect to be achieved.

The requirements come from "General Principles of Civil Architecture Design" GB50352


9. The sound-absorbing material can be better by using composite materials, that is, our rubber blocks are matched with high-density rubber coils. Can effectively reduce the vibration and sound wave evaluation rate. From a structural point of view, we can increase the material density and increase the thickness of the material in two directions to improve: the performance of "reducing the sound pressure level". The former has a higher weight.

9. Considering from the perspective of paving, it is not possible to achieve good results with light paving the ground because the vibration will be transmitted through the wall. Need to make a broken bridge structure, in fact, is similar to the practice of skirting.

10. Based on the principle of architectural acoustics, the working direction is to change the vibration instead of changing the sound.



PRODUCTION

Eliminate

Green Valley's noise reduction products include:


High-strength rubber cushion,


Foam rubber sound insulation pad,


Colorful SBR rubber sound insulation pad,


Centrifugal rubber sound insulation pad,


SBR rubber sound insulation pad.







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