CN115490972A - Light damping shock-absorbing rubber and preparation method thereof - Google Patents
Light damping shock-absorbing rubber and preparation method thereof Download PDFInfo
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- CN115490972A CN115490972A CN202211349814.7A CN202211349814A CN115490972A CN 115490972 A CN115490972 A CN 115490972A CN 202211349814 A CN202211349814 A CN 202211349814A CN 115490972 A CN115490972 A CN 115490972A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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Abstract
The invention belongs to the technical field of sound insulation and shock absorption of automobiles, and discloses a light damping shock absorption rubber which is prepared from the following raw materials in parts by weight: 50-60 parts of butyl rubber, 3-10 parts of resin, 5363-80 parts of polyisobutylene PB240060, 50-60 parts of light calcium carbonate, 60-70 parts of flame-retardant foaming agent, 5-10 parts of white oil, 1-3 parts of carbon black and 0.5-1 part of anti-aging agent. The light damping cushion rubber is low in density, good in sound insulation and capable of solving the problem of high energy consumption in automobile refitting, and the comfort level is improved.
Description
Technical Field
The invention belongs to the technical field of sound insulation and shock absorption of automobiles, and particularly relates to light damping shock-absorbing glue and a preparation method thereof.
Background
At present, vehicles become indispensable vehicles in people's daily life, and with the development of science and technology, the performance of each aspect of vehicles is more excellent, thereby provides high-quality result of use for people. For a car, NVH (noise, vibration and comfort) performance is one of important standards for measuring the grade and the brand, and becomes an important weight for market competitiveness of various brands of cars. The NVH performance of the whole vehicle can be improved through two modes of active control and passive control, and in the aspect of passive control, due to the fact that the difficulty of the change of a vehicle body structure is high, vibration reduction and noise reduction processing is relatively simple and necessary by applying materials with NVH functions (such as sound absorption, sound insulation, vibration reduction, sealing and the like).
There are two main ways of damping vibration by applying materials, namely damping vibration and strengthening vibration: the damping vibration attenuation aims at achieving the vibration attenuation purpose by dissipating the vibration energy of the metal plate through materials; at present, the oil price rises, more and more electric cars are used, and lighter sound-insulation and shock-absorption materials are needed to save energy.
At present, all damping cushion rubbers on the market have high weight and large energy consumption. The sound insulation effect of the middle and low frequencies does not reach the ideal sound insulation effect.
Therefore, how to develop a light damping cushion gum and a preparation method thereof are technical problems which need to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides a light damping cushion gum and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a light damping cushion gum is prepared from the following raw materials in parts by weight:
50-60 parts of butyl rubber, 3-10 parts of resin, 60-80 parts of polyisobutylene PB2400, 50-60 parts of light calcium carbonate, 60-70 parts of flame-retardant foaming agent, 5-10 parts of white oil, 1-3 parts of carbon black and 0.5-1 part of anti-aging agent.
Further, the light damping cushion gum is prepared from the following raw materials in parts by weight:
50 parts of butyl rubber, 3 parts of resin, 75 parts of polyisobutylene PB2400, 50 parts of light calcium carbonate, 65 parts of flame-retardant foaming agent, 7 parts of white oil, 3 parts of carbon black and 0.5 part of anti-aging agent.
The invention has the beneficial effects that: the formula mechanism is as follows: the light damping shock-absorbing rubber has the advantages of being stable in framework, resistant to high temperature, large in applicable temperature span, low in density, good in sound insulation and high in comfort, white oil, resin and PB1400 are used for increasing viscosity, light calcium carbonate is used as a filling agent, a flame-retardant foaming agent is used for reducing weight and increasing elasticity, and carbon black is used as a pigment.
Further, the resin: the C9 hydrogenated petroleum resin is white thermoplastic resin obtained by polymerizing and hydrogenating a C9 fraction which is a by-product of ethylene cracking.
Flame-retardant foaming agent: and (2) supercritical foaming TPE, and then grinding the mixture into powder under the condition of liquid nitrogen cooling to obtain foaming powder, wherein the specific gravity of the supercritical foaming TPE can be 0.18 at the lowest, and the TPE is PP + SEBS and is granulated by a double screw.
An anti-aging agent: the antioxidant is CPPD popular antioxidant.
Further, the butyl rubber: model 1675N, shanghai Fuyou International trade, inc.;
resin: type C9, dry synthetic materials science, inc., guangzhou city;
polyisobutylene PB2400: type Dalin manufacturer, guangzhou City Jialin chemical science and technology, inc.;
light calcium carbonate: yaode powder Co., ltd, hao Zu city;
flame-retardant foaming agent: type HB-20 manufacturer Europe chemical industry (Guangzhou) Co., ltd;
white oil: model 250N Guangzhou Yue Luo New Material Co., ltd;
carbon black: type Eurycoron 330 manufacturer Eurysi chemical (Guangzhou) Co., ltd;
an anti-aging agent: model MB-N manufacturer Europe chemical industry (Guangzhou) Co.
The invention also provides a preparation method of the light damping cushion gum, which comprises the following steps:
(1) Weighing the raw materials according to the light damping rubber;
(2) The light calcium carbonate is divided into two parts, the flame-retardant foaming agent is divided into two parts, and the polyisobutylene PB2400 is divided into two parts;
(3) Adding butyl rubber, resin, carbon black, an anti-aging agent and a first part of light calcium carbonate into a kneader to perform first kneading, then adding a second part of light calcium carbonate, a first part of flame-retardant foaming agent and a first part of polyisobutylene PB2400 to perform second kneading, then adding a second part of flame-retardant foaming agent and a second part of polyisobutylene PB2400 to perform third kneading, and finally adding white oil to perform fourth kneading to obtain the light damping cushion gum.
The invention has the beneficial effects that: the preparation method is simple, convenient in process operation and suitable for large-scale production and application.
Further, in the step (3), the mass ratio of the first part of the light calcium carbonate to the second part of the light calcium carbonate is 1:1.
The beneficial effects of the further technical scheme are that: the material can be kneaded more uniformly, and the density of the mixed material is not too low.
Further, the mass ratio of the first part of the flame-retardant foaming agent to the second part of the flame-retardant foaming agent in the step (3) is 1:1.
The beneficial effects of the further technical scheme are that: the materials can be kneaded more uniformly, and the flame-retardant effect after the materials are mixed is the same as that of the first part and the second part.
Further, in the step (3), the mass ratio of the first polyisobutylene PB2400 to the second polyisobutylene PB2400 in the step (3) is 2:1.
The beneficial effects of the further technical scheme are that: the first part was initially confirmed to be tacky and the second part was to deepen blocking.
Further, in the step (3), the first kneading time was 20 minutes, the second kneading time was 20 minutes, the third kneading time was 20 minutes, the fourth kneading time was 5 minutes, and the rotation speed of the kneader was 46r/min.
The beneficial effects of the further technical scheme are that: and (4) fully mixing.
Further, the kneader temperature at the time of the above-mentioned first kneading to fourth kneading in the step (3) is 120 to 135 ℃.
The beneficial effects of the further technical scheme are that: the butyl rubber is kneaded at a safe temperature, the butyl rubber is easy to scorch when the temperature is too high, and the butyl rubber is not thoroughly kneaded when the temperature is too low.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
The raw materials in the examples are as follows: butyl rubber: model 1675N, shanghai Fuyou International trade, inc.;
resin: type C9, dry synthetic materials science, inc., guangzhou city;
polyisobutylene PB2400: type Dalin manufacturer, guangzhou City Jialin chemical science and technology, inc.;
light calcium carbonate: yaode powder Co., ltd, hao Zu city;
flame-retardant foaming agent: type HB-20 manufacturer Europe chemical industry (Guangzhou) Co., ltd;
white oil: model 250N Guangzhou Yue Luo New Material Co., ltd;
carbon black: type Eurycoron 330 manufacturer Eurysi chemical (Guangzhou) Co., ltd;
an anti-aging agent: model MB-N manufacturer Europe chemical industry (Guangzhou) Co.
Example 1
The preparation method of the light damping cushion gum comprises the following steps:
(1) Weighing 50 kg of butyl rubber, 3 kg of resin, 75 kg of polyisobutylene PB2400, 50 kg of light calcium carbonate, 65 kg of flame-retardant foaming agent, 7 kg of white oil, 3 kg of carbon black and 0.5 kg of anti-aging agent;
(2) The light calcium carbonate is divided into two parts, the flame-retardant foaming agent is divided into two parts, and the polyisobutylene PB2400 is divided into two parts;
(3) Adding butyl rubber, resin, carbon black, an anti-aging agent and a first part of light calcium carbonate into a kneader to perform first kneading for 20 minutes, and then adding a second part of light calcium carbonate, a first part of flame-retardant foaming agent and a first part of polyisobutylene PB2400Performing second kneading for 20 minutes, adding a second part of flame-retardant foaming agent and a second part of polyisobutylene PB2400 for third kneading for 20 minutes, finally adding white oil for fourth kneading for 5 minutes, wherein the rotating speed of the kneading machine is 46r/min, and the temperature of the kneading machine is 120 ℃ from the first kneading to the fourth kneading to obtain the light damping shock-absorbing glue; wherein the mass ratio of the first part of light calcium carbonate to the second part of light calcium carbonate is 1:1, the mass ratio of the first part of flame-retardant foaming agent to the second part of flame-retardant foaming agent is 1:1, the mass ratio of the first part of polyisobutylene PB2400 to the second part of polyisobutylene PB2400 is 2:1, and the density of the light damping cushion gum in the embodiment 1 is 0.7g/cm 3 Sound insulation 26dB, flame retardant level B1. The sound insulation quantity detection standards of the embodiment and the comparative example are as follows: GB/T50121-2005, flame retardant grade test Standard: GB12731-2014.
Example 2
The preparation method of the light damping cushion gum comprises the following steps:
(1) Weighing 60 kg of butyl rubber, 10 kg of resin, 2400 kg of polyisobutylene PB, 60 kg of light calcium carbonate, 60 kg of flame-retardant foaming agent, 5 kg of white oil, 1 kg of carbon black and 1 kg of anti-aging agent;
(2) The light calcium carbonate is divided into two parts, the flame-retardant foaming agent is divided into two parts, and the polyisobutylene PB2400 is divided into two parts;
(3) Adding butyl rubber, resin, carbon black, an anti-aging agent and a first part of light calcium carbonate into a kneader to perform first kneading for 20 minutes, then adding a second part of light calcium carbonate, a first part of flame-retardant foaming agent and a first part of polyisobutylene PB2400 to perform second kneading for 20 minutes, then adding a second part of flame-retardant foaming agent and a second part of polyisobutylene PB2400 to perform third kneading for 20 minutes, finally adding white oil to perform fourth kneading for 5 minutes, wherein the rotating speed of the kneader is 46r/min, and the temperature of the kneader is 130 ℃ when the first kneading is performed to the fourth kneading to obtain light damping vibration-damping rubber; wherein the mass ratio of the first part of light calcium carbonate to the second part of light calcium carbonate is 1:1, the mass ratio of the first part of flame-retardant foaming agent to the second part of flame-retardant foaming agent is 1:1, and the mass ratio of the first part of polyisobutylene PB2400 to the second part of polyisobutylene PB2400 is 2:1.
Example 3
The preparation method of the light damping cushion gum comprises the following steps:
(1) Weighing 55 kg of butyl rubber, 7 kg of resin, 2400 kg of polyisobutylene PB, 55 kg of light calcium carbonate, 70 kg of flame-retardant foaming agent, 10 kg of white oil, 2 kg of carbon black and 0.7 kg of anti-aging agent;
(2) The light calcium carbonate is divided into two parts, the flame-retardant foaming agent is divided into two parts, and the polyisobutylene PB2400 is divided into two parts;
(3) Adding butyl rubber, resin, carbon black, an anti-aging agent and a first part of light calcium carbonate into a kneader to perform first kneading for 20 minutes, then adding a second part of light calcium carbonate, a first part of flame-retardant foaming agent and a first part of polyisobutylene PB2400 to perform second kneading for 20 minutes, then adding a second part of flame-retardant foaming agent and a second part of polyisobutylene PB2400 to perform third kneading for 20 minutes, finally adding white oil to perform fourth kneading for 5 minutes, wherein the rotating speed of the kneader is 46r/min, and the temperature of the kneader is 135 ℃ when the first kneading is performed to the fourth kneading to obtain light damping vibration-damping rubber; wherein the mass ratio of the first part of light calcium carbonate to the second part of light calcium carbonate is 1:1, the mass ratio of the first part of flame-retardant foaming agent to the second part of flame-retardant foaming agent is 1:1, and the mass ratio of the first part of polyisobutylene PB2400 to the second part of polyisobutylene PB2400 is 2:1.
Comparative experiment
Comparative example 1
(1) Weighing 50 kg of butyl rubber, 3 kg of resin, 2400 kg of polyisobutylene PB, 50 kg of light calcium carbonate, 65 kg of bamboo powder, 3 kg of carbon black, 0.5 kg of anti-aging agent and 3 kg of white oil;
(2) The light calcium carbonate is divided into two parts, the bamboo powder is divided into two parts, and the polyisobutylene PB2400 is divided into two parts;
(3) Adding butyl rubber, resin, carbon black, an anti-aging agent and a first part of light calcium carbonate into a kneader to perform first kneading for 20 minutes, then adding a second part of light calcium carbonate, a first part of bamboo powder and a first part of polyisobutylene PB2400 to perform second kneading for 20 minutes, then adding a second part of bamboo powder and a second part of polyisobutylene PB2400 to perform third kneading for 20 minutes, finally adding white oil to perform fourth kneading for 5 minutes to obtain the damping cushion rubber, wherein the temperature of the kneader is 120 ℃, and the rotating speed of the kneader is 46r/min.
The product of comparative example 1 has the density of 0.9, the sound insulation quantity of 20dB and is not flame retardant.
Comparative example 2
(1) Weighing 50 kg of butyl rubber, 3 kg of resin, 2400 kg of polyisobutylene PB, 50 kg of light calcium carbonate, 200 kg of composite powder, 3 kg of carbon black and 0.5 kg of anti-aging agent, wherein the composite powder comprises the following raw materials in percentage by mass: 98.8 percent of calcium carbonate, 0.02 percent of silicon dioxide, 0.58 percent of magnesium oxide, 0.4 percent of aluminum oxide and 0.2 percent of ash;
(2) The light calcium carbonate is divided into two parts, the composite powder is divided into two parts, and the polyisobutylene PB2400 is divided into two parts;
(4) Adding butyl rubber, resin, carbon black, an anti-aging agent and a first part of light calcium carbonate into a kneader to perform first kneading for 20 minutes, then adding a second part of light calcium carbonate, a first part of composite powder and a first part of polyisobutylene PB2400 to perform second kneading for 20 minutes, then adding a second part of composite powder and a second part of polyisobutylene PB2400 to perform third kneading for 20 minutes to obtain damping cushion gum, wherein the temperature of the kneader is 120 ℃, and the rotating speed of the kneader is 46r/min.
The product of comparative example 2 has a density of 1.4, a sound insulation of 21dB and is not flame-retardant.
Comparative example 3
(1) Weighing 50 kg of chlorinated rubber (Shanghai Fuyou International trade Co., ltd., model number CR-1), 3 kg of resin, 240075 kg of polyisobutylene, 50 kg of light calcium carbonate, 65 kg of flame-retardant foaming agent, 3 kg of white oil, 3 kg of carbon black, 0.5 kg of anti-aging agent and 7 kg of white oil;
(2) The light calcium carbonate is divided into two parts, the flame-retardant foaming agent is divided into two parts, and the polyisobutylene PB2400 is divided into two parts;
(3) Adding chlorinated rubber, resin, carbon black, an anti-aging agent and a first part of light calcium carbonate into a kneader to perform first kneading for 20 minutes, then adding a second part of light calcium carbonate, a first part of flame-retardant foaming agent and a first part of polyisobutylene PB2400 to perform second kneading for 20 minutes, adding a second part of flame-retardant foaming agent and a second part of polyisobutylene PB2400 to perform third kneading for 20 minutes, and finally adding white oil to perform fourth kneading for 5 minutes to obtain the damping cushion rubber, wherein the temperature of the kneader is 120 ℃, and the rotation speed of the kneader is 46r/min.
The product of comparative example 3 has a density of 1.4, a sound insulation of 23dB and is not flame-retardant.
The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The light damping cushion gum is characterized by being prepared from the following raw materials in parts by weight:
50-60 parts of butyl rubber, 3-10 parts of resin, 5363-80 parts of polyisobutylene PB240060, 50-60 parts of light calcium carbonate, 60-70 parts of flame-retardant foaming agent, 5-10 parts of white oil, 1-3 parts of carbon black and 0.5-1 part of anti-aging agent.
2. The light damping cushion gum as claimed in claim 1, is prepared from the following raw materials in parts by weight: 50 parts of butyl rubber, 3 parts of resin, 3 parts of polyisobutylene PB240075, 50 parts of light calcium carbonate, 65 parts of flame-retardant foaming agent, 7 parts of white oil, 3 parts of carbon black and 0.5 part of anti-aging agent.
3. The preparation method of the light damping cushion gum is characterized by comprising the following steps:
(1) Weighing the raw materials according to the light damping shock-absorbing rubber of claim 1 or 2;
(2) The light calcium carbonate is divided into two parts, the flame-retardant foaming agent is divided into two parts, and the polyisobutylene PB2400 is divided into two parts;
(3) Adding butyl rubber, resin, carbon black, an anti-aging agent and a first part of light calcium carbonate into a kneader to perform first kneading, then adding a second part of light calcium carbonate, a first part of flame-retardant foaming agent and a first part of polyisobutylene PB2400 to perform second kneading, then adding a second part of flame-retardant foaming agent and a second part of polyisobutylene PB2400 to perform third kneading, and finally adding white oil to perform fourth kneading to obtain the light damping cushion gum.
4. The method for preparing the light damping cushion gum according to claim 3, wherein the mass ratio of the first portion of the light calcium carbonate to the second portion of the light calcium carbonate in the step (3) is 1:1.
5. The preparation method of the light damping cushion gum according to claim 3, wherein the mass ratio of the first part of the flame-retardant foaming agent to the second part of the flame-retardant foaming agent in the step (3) is 1:1.
6. The preparation method of the light damping cushion gum as claimed in claim 3, wherein the mass ratio of the first part of the polyisobutylene PB2400 to the second part of the polyisobutylene PB2400 in the step (3) is 2:1.
7. The preparation method of the light damping cushion gum as claimed in claim 3, wherein the first kneading time in step (3) is 20 minutes, the second kneading time is 20 minutes, the third kneading time is 20 minutes, the fourth kneading time is 5 minutes, and the rotation speed of the kneader is 46r/min.
8. The method for preparing a light damping cushion gum according to claim 3, wherein the temperature of the kneader during the first kneading to the fourth kneading in step (3) is 120-135 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211349814.7A CN115490972A (en) | 2022-10-31 | 2022-10-31 | Light damping shock-absorbing rubber and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211349814.7A CN115490972A (en) | 2022-10-31 | 2022-10-31 | Light damping shock-absorbing rubber and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106543750A (en) * | 2016-11-18 | 2017-03-29 | 武汉理工大学 | A kind of TPE material of chemical blowing and preparation method thereof |
| CN107189188A (en) * | 2017-07-07 | 2017-09-22 | 三斯达（江苏）环保科技有限公司 | A kind of vibration-damping foamed materials of new TPE and its preparation |
| CN110423411A (en) * | 2019-07-18 | 2019-11-08 | 伟能(广东)新材料有限公司 | A kind of lightweight damping shock absorption glue and preparation method thereof |
| CN112694637A (en) * | 2021-01-20 | 2021-04-23 | 江苏威久科技发展有限公司 | Composite flame-retardant foaming agent for foamed plastic and preparation method thereof |
| CN115181371A (en) * | 2021-08-10 | 2022-10-14 | 伟能(广东)新材料有限公司 | Butyl rubber damping sheet and synthesis method and application thereof |
-
2022
- 2022-10-31 CN CN202211349814.7A patent/CN115490972A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106543750A (en) * | 2016-11-18 | 2017-03-29 | 武汉理工大学 | A kind of TPE material of chemical blowing and preparation method thereof |
| CN107189188A (en) * | 2017-07-07 | 2017-09-22 | 三斯达（江苏）环保科技有限公司 | A kind of vibration-damping foamed materials of new TPE and its preparation |
| CN110423411A (en) * | 2019-07-18 | 2019-11-08 | 伟能(广东)新材料有限公司 | A kind of lightweight damping shock absorption glue and preparation method thereof |
| CN112694637A (en) * | 2021-01-20 | 2021-04-23 | 江苏威久科技发展有限公司 | Composite flame-retardant foaming agent for foamed plastic and preparation method thereof |
| CN115181371A (en) * | 2021-08-10 | 2022-10-14 | 伟能(广东)新材料有限公司 | Butyl rubber damping sheet and synthesis method and application thereof |
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