阅读说明：本技术 一种吸音隔音材料及其制备方法 (Sound-absorbing and sound-insulating material and preparation method thereof ) 是由 王宝靓 于 2019-09-20 设计创作，主要内容包括：本发明提供一种吸音隔音材料,按重量份数计,包括以下组分制得：橡胶10-15份、PVC10-15份、发泡剂10-15份、填充剂18-24份、炭黑3-7份、石蜡17-22份、氯化聚乙烯2-5份、板蜡1-5份、大豆油1-4份、表面活性剂0.5-3份、硬脂酸钙0.5-4份。通过添加包括PVC、橡胶、发泡剂的混合材料,通过优化各组分的用量,可以有效达到制得产品具有大大小小的孔洞,有效保证吸音材料整体的吸音性能。(The invention provides a sound-absorbing and sound-insulating material which is prepared from the following components in parts by weight: 10-15 parts of rubber, 10-15 parts of PVC, 10-15 parts of foaming agent, 18-24 parts of filler, 3-7 parts of carbon black, 17-22 parts of paraffin, 2-5 parts of chlorinated polyethylene, 1-5 parts of wax, 1-4 parts of soybean oil, 0.5-3 parts of surfactant and 0.5-4 parts of calcium stearate. By adding the mixed material comprising PVC, rubber and foaming agent and optimizing the using amount of each component, the prepared product can be effectively provided with large and small holes, and the integral sound absorption performance of the sound absorption material is effectively ensured.)

1. the sound-absorbing and sound-insulating material is characterized by comprising the following components in parts by weight: 10-15 parts of rubber, 10-15 parts of PVC, 10-15 parts of foaming agent, 18-24 parts of filler, 3-7 parts of carbon black, 17-22 parts of paraffin, 2-5 parts of chlorinated polyethylene, 1-5 parts of wax, 1-4 parts of soybean oil, 0.5-3 parts of surfactant and 0.5-4 parts of calcium stearate.

2. The sound-absorbing and sound-insulating material according to claim 1, which is prepared from the following components in parts by weight: 10 parts of rubber, 10 parts of PVC, 10 parts of foaming agent, 20 parts of filler, 4 parts of carbon black, 20 parts of paraffin, 3 parts of chlorinated polyethylene, 2 parts of paraffin wax, 2 parts of soybean oil, 1 part of surfactant and 1 part of calcium stearate.

3. The sound-absorbing and sound-insulating material according to claim 1, wherein: the rubber is selected from one or more of butadiene rubber, styrene butadiene rubber and silicon rubber.

4. The sound-absorbing and sound-insulating material according to claim 1, wherein: the filler is selected from one or more of talcum powder, calcium carbonate and barium sulfate.

5. The sound-absorbing and sound-insulating material according to claim 1, wherein: the foaming agent is selected from one or more of azodicarbonamide, ethylenediamine, benzenesulfonyl hydrazide, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate.

6. The sound-absorbing and sound-insulating material according to claim 1, wherein: the surfactant is selected from one or more of polyethylene glycol, ethylene glycol and butanediol.

7. The method for preparing the sound-absorbing and sound-insulating material according to any one of claims 1 to 6, comprising the steps of:

1) taking raw materials of each component for standby, and banburying rubber and PVC in a banbury mixer;

2) placing the rubber and the PVC subjected to banburying in the step 1) into an open mill, adding a filler, carbon black, paraffin, chlorinated polyethylene, board wax, soybean oil, a surfactant and calcium stearate according to a proportion, open milling, glue spreading and slicing;

3) Putting the slices obtained in the step 2) into an extruder, adding a foaming agent, extruding into a mould for mould pressing and foaming, releasing pressure after foaming, taking out the mould, and cooling to obtain the foam material.

8. The method for producing the sound-absorbing and-insulating material according to claim 7, characterized by comprising: in the step 1), the temperature of the internal mixer is 115-125 ℃, and the internal mixing time is 10-15 min.

9. The method for producing the sound-absorbing and-insulating material according to claim 7, characterized by comprising: in the step 2), the open milling temperature is 120-.

10. The method for producing the sound-absorbing and-insulating material according to claim 7, characterized by comprising: in the step 3), the extruder is a double-screw extruder, wherein the temperature of each zone of the double-screw extruder is as follows: the first zone is 125-155 ℃, the second zone is 140-155 ℃, the third zone is 160-170 ℃, the fourth zone is 170-175 ℃, the fifth zone is 170-180 ℃, the sixth zone is 180-185 ℃, the seventh zone is 185-190 ℃, the head is 160-200 ℃, and the rotating speed of the double-screw extruder is 100-300 r/min.

Technical Field

the invention belongs to the technical field of noise reduction materials, and particularly relates to a sound absorption and insulation material and a method for preparing the same.

Technical Field

In the present society, various high-speed vehicles, industrial equipment, construction machinery, household appliances, audio equipment and the like are widely applied, so that the noise pollution of the living environment of people is increasingly serious, the noise pollution can not only influence the normal work, study and life of people and harm the physical and mental health of people, but also influence the normal work and service life of some precise instruments and equipment, and therefore the noise pollution is one of four public hazards which are urgently needed to be solved.

it is well known that sound is caused by vibrations of an object. Physically speaking, noise refers to the sound produced by an object making a series of vibrations that are not periodic and irregular. Psychologically, any depressed, boring, inattentive and not intended sound is collectively referred to as noise. From the viewpoint of environmental protection, noise is the sound which causes harm to the physical and mental health of human and disturbs the study and life of human.

Noise pollution is a kind of pollution that people's eyes can't see, is easily ignored by everyone, but its harm is manifold, mainly shows in:

(1) the effect of noise on hearing. If people live in a noisy environment for a long time, the hearing of the human ears is affected. Researches show that people often stay in a noise environment of 80 dB-85 dB to cause mild hearing damage; when the noise intensity reaches 85 dB-90 dB, noise deafness occurs to a part of people; when the noise intensity is higher than 90dB, the number of deaf patients will increase sharply. According to statistics, many deaf patients in society at present are deaf caused by noise damage. Meanwhile, the expert researches indicate that one main reason for deafness of children is household indoor noise injury.

(2) Besides the influence on the hearing of people, the noise also influences the cardiovascular system, the digestion, the nerves, the endocrine system, the vision, the intelligence and the like of people. In the aspect of cardiovascular, strong noise can affect the pulse and heart rate changes of people, so that the blood pressure of people is increased, the heart rate is irregular, the conduction is blocked, and the like. Studies have been conducted in the uk to show that the incidence of heart disease increases by about 20% when people live in areas with severe noise pollution. China also has relevant survey to show that: the incidence of hypertensive patients increases with increased environmental noise. In the digestive system, strong noise may cause gastrointestinal dysfunction, dyspepsia, decreased appetite, nausea, vomiting, less gastric secretion, etc., which in turn may lead to an increased incidence of gastritis and peptic ulcer. Noise also acts on the central nervous system of a human body to damage the tension of cerebral vessels, thereby causing symptoms such as dizziness, tinnitus, palpitation, brain distension, insomnia and the like. The noise also affects the development of the intelligence and hearing of the fetus, and even causes the fetus to be malformed. Noise also affects our vision, reducing sensitivity to light and weakening vision.

(3) Noise can also affect the proper use of instrumentation and it can cause high precision instrumentation to fail. For example, noise can interfere with the ship's observation equipment, affecting the normal operation of sonar, making enemy warships less likely to be found, thereby delaying warplanes; it has also been reported that about 60% of failures in satellite accidents are related to vibration and noise. High noise can also cause mechanical structures to break due to acoustic fatigue, causing accidents, such as wall shattering, tile shattering, glass shattering, chimney and building collapse.

In modern society, national economy is rapidly developed, the level of science and technology is continuously improved, the requirements of people on living quality are higher and higher, a comfortable and safe living environment is eager, and therefore urgent needs are provided for noise reduction technology.

Disclosure of Invention

Detailed Description

The technical solutions of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

in the present application, the raw materials selected may be commercially available without specific mention.

Such as: PVC is purchased from Jinlida new material in Zhejiang;

Rubber was purchased from petroleum products, Inc. of China;

Carbon black was purchased from Shandong Wanhuantian New Material Co., Ltd;

Paraffin wax is purchased from Chengdouding chemical products, Inc.;

Calcium stearate was purchased from Chengdouding chemical products, Inc.