CN115141419A - Flame-retardant sound-insulation sheet and preparation method thereof - Google Patents
Flame-retardant sound-insulation sheet and preparation method thereof Download PDFInfo
- Publication number
- CN115141419A CN115141419A CN202110925314.2A CN202110925314A CN115141419A CN 115141419 A CN115141419 A CN 115141419A CN 202110925314 A CN202110925314 A CN 202110925314A CN 115141419 A CN115141419 A CN 115141419A
- Authority
- CN
- China
- Prior art keywords
- weight
- parts
- flame
- insulating sheet
- retardant sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2321/00—Characterised by the use of unspecified rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
-
- 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
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a flame-retardant sound-insulating sheet and a preparation method thereof, belonging to a rubber product, and the preparation raw materials comprise 50-100 parts by weight of high polymer material, 1-150 parts by weight of filler, 20-70 parts by weight of inorganic flame retardant, 5-50 parts by weight of plasticizer, 5-30 parts by weight of stabilizer, 1-10 parts by weight of auxiliary agent, 1-10 parts by weight of flow agent and 1-10 parts by weight of dispersing agent. The compatibility of each component in the raw materials is good, the finally obtained flame-retardant sound-insulating sheet has the advantages of shock absorption, high temperature resistance, aging resistance, creep resistance, wear resistance, good flame-retardant property and the like, and meanwhile, the product is safe, environment-friendly and pollution-free, and is suitable for automobile shock-absorbing products.
Description
Technical Field
The invention relates to B60R, in particular to a flame-retardant sound-insulating sheet and a preparation method thereof.
Background
With the rapid development of modern industry, vibration and noise become serious problems in various fields, which can reduce the operation precision, affect the product quality, shorten the product life, and cause the high-precision instrument not to work normally, thereby endangering the safety. In the processing and manufacturing of automobiles, the high polymer material is a novel functional material which is developed in recent years and can convert vibration and sound energy into heat energy to be dissipated, and the high polymer material is widely applied to various mechanical equipment, so that the research and development of novel high-efficiency high polymer materials with excellent comprehensive performance have remarkable significance.
Patent document CN107177058a discloses a sound insulation rubber, which comprises the following raw materials: natural rubber, expanded perlite powder, fly ash microbeads, a softening agent, butyl acrylate, polymethyl ethylene carbonate, potassium persulfate, sodium dodecyl sulfate, zinc stearate, a filling agent and argil. The obtained rubber has good mechanical property and sound insulation property. But has the disadvantages of complex preparation process and flammability. Chinese patent CN106916383A discloses a sound insulation material composition and a sound insulation sheet material for a vehicle, wherein the sound insulation material comprises EPDM rubber, mica powder, dolomite, a vulcanizing agent, a compatilizer, a flame retardant, a crosslinking agent, a plasticizer, and barium sulfate as raw materials, and can improve the processability of the sound insulation material composition and improve the vibration absorption and sound insulation effects of the sound insulation sheet material for a vehicle. Patent document CN102675759a discloses a high-density, low-smoke-toxicity, flame-retardant and sound-insulation pad and a preparation method thereof, wherein the raw materials comprise: chlorinated polyethylene, styrene butadiene rubber, barium sulfate, an iron compound, mica, an inorganic flame retardant, an auxiliary agent and an anti-aging agent. The product keeps good flexibility and good cutting performance, and simultaneously has excellent physical properties such as high sound insulation, high flame retardant rating, low smoke level and the like, the existing background technology has advantages and disadvantages, but no product which combines shock absorption and has good high temperature resistance, aging resistance, creep resistance, wear resistance and flame retardance at the same time exists in the market at present.
Disclosure of Invention
In order to solve the problems, the invention provides a preparation method of a product which combines shock absorption and has good high temperature resistance, aging resistance, creep resistance, wear resistance and flame retardance.
The specific technical scheme provided by the invention is as follows: the preparation raw materials comprise 50-100 parts by weight of high polymer material, 1-150 parts by weight of filler, 20-70 parts by weight of inorganic flame retardant, 5-50 parts by weight of plasticizer, 5-30 parts by weight of stabilizer and 1-10 parts by weight of auxiliary agent.
In one embodiment, the raw materials for preparing the flame-retardant sound-insulating sheet further comprise 1-10 parts by weight of a flow agent and 1-10 parts by weight of a dispersing agent.
In a preferred embodiment, the polymer material is polyvinyl chloride and/or modified rubber, wherein the polymer material comprises 0 to 100 parts by weight of polyvinyl chloride and 0 to 100 parts by weight of modified rubber. The high polymer is a novel functional material which is developed in recent years and can convert vibration and sound energy into heat energy to be dissipated, and convert the vibration energy into the heat energy or have other functions of dissipating the energy.
In the selection process of 0-100 parts by weight of polyvinyl chloride and 0-100 parts by weight of modified rubber, the total weight part meets 50-100.
Preferably, the flame-retardant sound-insulating sheet in the application comprises the following selected high polymer materials in parts by weight: 32 parts of polyvinyl chloride and 38 parts of modified rubber.
The polyvinyl chloride of the invention is purchased from Hua Hongxin plastics of Dongguan, inc., and the model is SG-0. The modified rubber was purchased from hong bei polymer materials ltd.
In order to improve the physical mechanical property, the wear resistance, the thermal property and the aging resistance of the plastic product, in some preferred schemes, the filler is selected from one or more of barium sulfate, silica, calcium carbonate, ferric oxide and aluminum oxide, wherein the filler comprises 0-90 parts by weight of barium sulfate, 0-10 parts by weight of silica, 0-20 parts by weight of calcium carbonate, 0-10 parts by weight of ferric oxide and 0-15 parts by weight of aluminum oxide, and the parts by weight of barium sulfate, silica, calcium carbonate, ferric oxide and aluminum oxide are not 0 at the same time.
In the selection process of 0-90 parts by weight of barium sulfate, 0-10 parts by weight of silicon dioxide, 0-20 parts by weight of calcium carbonate, 0-10 parts by weight of ferric oxide and 0-15 parts by weight of aluminum oxide, the total weight part meets 1-150.
Preferably, the flame-retardant sound-insulating sheet in the application selects the following fillers in parts by weight: 62 parts of barium sulfate, 4 parts of silicon dioxide, 10 parts of calcium carbonate, 5 parts of ferric oxide and 3 parts of aluminum oxide.
As a preferred embodiment, the inorganic flame retardant is one or more selected from aluminum hydroxide, magnesium hydroxide and zinc acetate. The inorganic flame retardant is prepared by chemical reaction of the physical change plays a role in flame retardance.
More preferably, the inorganic flame retardant is selected from aluminum hydroxide, and its weight part is 50 parts.
As a preferred embodiment, the plasticizer is DOTP and/or DOP, and the stabilizer is a calcium/zinc composite stabilizer. Wherein, the plasticizer increases the plasticity of resin molecules, so that the flexibility of the resin molecules is enhanced, the processing is easy, and the calcium/zinc composite stabilizer is a nontoxic stabilizer of PVC and can effectively prevent the thermal decomposition of PVC.
More preferred plasticizers are selected from DOTP available from Central Co-Plastic trade company, inc.
Preferably, the weight part of the calcium/zinc composite stabilizer is 8 parts.
As a preferred embodiment, the adjuvant is a stearate. Are compounds which are not sufficient for improving the processability of the polymer during molding or for improving the properties of the resin itself.
As a preferred embodiment, the stearate is one or more of calcium stearate, barium stearate and zinc stearate.
More preferably, the stearate is selected from zinc stearate in an amount of 5 parts by weight.
In a preferred embodiment, the flow agent is LD-100E, which can greatly improve the melt index of the polyvinyl chloride resin and increase the processing fluidity.
In a preferred embodiment, the flow aid is purchased from Tian Taoshi, inc. under the designation LD-100E, and has a molecular weight of 2500.
Preferably, LD-100E part by weight is 3 parts.
In a preferred embodiment, the dispersant is JLP-253, which can achieve the effect of improving the mechanical properties of the composite material.
Preferably, JLP-253 is present in an amount of 1 part by weight.
In order to impart higher stiffness to the compound, in some preferred embodiments, the preparation feedstock further comprises 0 to 20 parts by weight of carbon black N550, wherein the part by weight of carbon black N550 is different from 0.
Preferably, the weight part of the carbon black N550 is 8 parts.
The invention also provides a preparation method of the flame-retardant sound-insulating sheet, which comprises the steps of mixing and banburying the raw materials, pouring the mixture into an extruder for extrusion, sequentially passing through a die orifice, three-roller calendering, a cooling roller and a transmission belt, slitting, cutting and molding to obtain the flame-retardant sound-insulating sheet.
In the banburying process, the banburying temperature is 150-170 ℃, the temperature rising time of the banburying is 8-12 minutes, the materials are turned over once every 2-3 minutes during the temperature rising period, then the temperature is adjusted to 120-130 ℃, and the materials are poured into an extruder for extrusion.
Preferably, in the banburying process, the banburying temperature is 170 ℃, the temperature rising time of the banburying is 12 minutes, the materials are overturned once every 3 minutes during the temperature rising process, then the temperature is adjusted to 130 ℃, and the materials are poured into an extruder for extrusion.
The invention has the following beneficial effects:
the invention provides a preparation method of a flame-retardant sound-insulating sheet, which comprises the following steps:
1. according to the invention, the polyvinyl chloride and the modified rubber are blended to obtain the high-damping material, so that the effects of shock absorption and noise reduction are achieved.
2. The invention improves or enhances the physical mechanical property, the wear resistance, the thermal property and the aging resistance of the plastic product by adding the fillers such as silicon dioxide, calcium carbonate, barium sulfate, ferric oxide, aluminum oxide and the like, and overcomes the defects of low temperature resistance, low rigidity, easy expansibility, easy creep property and the like of the plastic.
3. The inorganic flame retardant aluminum hydroxide is added to play a role in flame retardance of the base material.
4. The invention adds plasticizer DOTP to increase the plasticity of resin molecules, so that the flexibility of the resin is enhanced and the resin is easy to process.
5. According to the invention, the calcium/zinc composite stabilizer is added to achieve the effect of effectively preventing PVC thermal decomposition, and the method is non-toxic and environment-friendly.
6. The sound-proof sheet has the advantages of higher stiffness, high extrusion speed, smooth extrusion surface, small mouth shape expansion, low price and no toxicity by adding the N550 carbon black.
7. The invention can greatly improve the melt index of the polyvinyl chloride resin and increase the processing fluidity by adding the flow additive LD-100E.
8. According to the invention, the effect of improving the mechanical property of the composite material can be achieved by adding the dispersant JLP-253.
9. The flame-retardant sound-insulation sheet prepared by the invention is suitable for automobile shock-absorption products.
Detailed Description
Example 1: the flame-retardant sound-insulating sheet and the preparation method thereof are characterized in that the flame-retardant sound-insulating sheet is prepared by the following raw materials in parts by weight
The polyvinyl chloride resin is SG-0.
The polyvinyl chloride is purchased from Hua Hongxin plastics Co., ltd, dongguan, and has a model of SG-0.
The modified rubber is purchased from center hong bei polymer materials ltd.
The particle size of the aluminum hydroxide is 1-4 mu m, and the aluminum hydroxide is purchased from Hefei Wanhui New Material science and technology Limited. The barium sulfate was purchased from Kunzhan Vanuo plastics materials, inc.
The silica was 800 mesh in size and was obtained from Ping Yu Xin plasting, inc., available in Dongguan.
The calcium carbonate was purchased from kyropoulos plasticator, ltd.
The calcium/zinc composite stabilizer is CZ5111.
The LD-100E is polyethylene glycol, purchased from Tian Marsh company, molecular weight 2500. The JLP-253 is a phthalate ester and silane coupling agent compound.
A preparation method of the flame-retardant sound-insulating sheet comprises the following steps:
s1, mixing the prepared raw materials, pouring the mixture into an internal mixer, heating the mixture for 12 minutes at the internal mixing temperature of 170 ℃, turning the materials once every 3 minutes during heating, and discharging the materials at the time.
S2, adjusting the temperature to 130 ℃, pouring the mixture into an extruder for extrusion, and then sequentially passing through a die orifice, a three-roller calendering, a cooling roller and a conveying belt.
And S3, cutting and forming to obtain the finished product.
Comparative example 1
Comparative example 1 is substantially the same as example 1 except that it comprises the following preparation raw materials in parts by weight:
the preparation method is shown in example 1
Comparative example 2
Comparative example 2 is essentially the same as example 1 except that the rubber is a butadiene rubber.
The preparation method is shown in example 1
Performance test method
1. Elongation at break: for the examples, the obtained flame-retardant noise-damping sheet was subjected to elongation at break test using a tensile machine, and the detection data showed that: the elongation at break was 22%.
2. Tear strength: for the examples, the obtained flame-retardant noise-damping sheet was subjected to a tear strength at break test using a peel strength tester, and the test data showed that: the tear strength is not 12KN/m.
3. Sound insulation amount: for the embodiment, the obtained flame-retardant silencing sheet is subjected to sound insulation test by using a tensile machine, and detection data show that: the sound insulation amount was 29dB (A).
4. For the embodiment, the obtained flame-retardant silencing sheet is detected by three parties, and the detection data show that: when the technical index is REACH, the environmental protection experiment is qualified; testing the flame retardant performance to be qualified by using a GB 8624-2012 horizontal combustion testing machine; testing with a Smoke Density Rating (SDR) tester, wherein the smoke density is 1; when the technical index is 85535-84-8, the paraffin is qualified for detection; when the technical index is ISO22262-1.2012, the asbestos is qualified in detection; when the technical index is ASTMC177-19, the thermal conductivity is 0.465W/(m.K); when the technical index is ASTMC177-19, the thermal resistance is 0.0215 (m.K))/W; when the technical index is GB/T20285-2006, the smoke toxicity ZA1.
Claims (10)
1. A flame-retardant sound-insulating sheet is characterized in that: the preparation raw materials comprise 50-100 parts by weight of high polymer material, 1-150 parts by weight of filler, 20-70 parts by weight of inorganic flame retardant, 5-50 parts by weight of plasticizer, 5-30 parts by weight of stabilizer and 1-10 parts by weight of assistant.
2. A fire retardant sound-insulating sheet according to claim 1, wherein: the high polymer material is polyvinyl chloride and/or modified rubber, wherein the high polymer material comprises 0-100 parts by weight of polyvinyl chloride and 0-100 parts by weight of modified rubber.
3. A fire retardant sound-insulating sheet according to claim 1, wherein: the filler is selected from one or more of barium sulfate, silicon dioxide, calcium carbonate, ferric oxide and aluminum oxide, wherein the filler comprises 0-90 parts by weight of barium sulfate, 0-10 parts by weight of silicon dioxide, 0-20 parts by weight of calcium carbonate, 0-10 parts by weight of ferric oxide and 0-15 parts by weight of aluminum oxide, and the parts by weight of barium sulfate, silicon dioxide, calcium carbonate, ferric oxide and aluminum oxide are not 0 at the same time.
4. A fire retardant sound-insulating sheet according to claim 1, wherein: the inorganic flame retardant is selected from one or more of aluminum hydroxide, magnesium hydroxide and zinc acetate.
5. A fire retardant sound-insulating sheet according to claim 1, wherein: the plasticizer is DOTP and/or DOP, and the stabilizer is a calcium/zinc composite stabilizer.
6. A fire retardant sound-insulating sheet according to claim 1, wherein: the auxiliary agent is stearate.
7. The flame-retardant sound-insulating sheet according to claim 6, wherein: the stearate is one or more of calcium stearate, barium stearate and zinc stearate.
8. A fire retardant sound-insulating sheet according to claim 1, wherein: the preparation raw material also comprises 0-20 parts by weight of carbon black, wherein the part by weight of the carbon black is not 0.
9. A method for preparing the flame-retardant sound-insulating sheet according to any one of claims 1 to 8, characterized in that: mixing and banburying the raw materials, pouring the mixture into an extruder for extrusion, sequentially passing through a die orifice, three-roller calendering, a cooling roller and a transmission belt, slitting, cutting and molding to obtain the finished product.
10. The method for preparing a flame-retardant sound-proof sheet according to claim 9, wherein: in the banburying process, the banburying temperature is 150-170 ℃, the temperature rising time of the banburying is 8-12 minutes, the materials are turned over once every 2-3 minutes during the temperature rising period, then the temperature is adjusted to 120-130 ℃, and the materials are poured into an extruder for extrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110925314.2A CN115141419A (en) | 2021-08-12 | 2021-08-12 | Flame-retardant sound-insulation sheet and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110925314.2A CN115141419A (en) | 2021-08-12 | 2021-08-12 | Flame-retardant sound-insulation sheet and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115141419A true CN115141419A (en) | 2022-10-04 |
Family
ID=83404713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110925314.2A Pending CN115141419A (en) | 2021-08-12 | 2021-08-12 | Flame-retardant sound-insulation sheet and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115141419A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111363212A (en) * | 2020-03-25 | 2020-07-03 | 伟能(广东)新材料有限公司 | Damping material for automobile and preparation method thereof |
| CN112521694A (en) * | 2020-12-03 | 2021-03-19 | 牟正雄 | Sound-proof damping felt |
-
2021
- 2021-08-12 CN CN202110925314.2A patent/CN115141419A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111363212A (en) * | 2020-03-25 | 2020-07-03 | 伟能(广东)新材料有限公司 | Damping material for automobile and preparation method thereof |
| CN112521694A (en) * | 2020-12-03 | 2021-03-19 | 牟正雄 | Sound-proof damping felt |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103073816B (en) | Heat-resisting and cold-resisting environment-friendly PVC (polyvinyl chloride) modified material and preparation method thereof | |
| CN110713657B (en) | Polypropylene composite flame-retardant material for vehicle interior trim and preparation method and application thereof | |
| CN109294117B (en) | Plum blossom pipe and production process thereof | |
| CN102504388A (en) | Sound insulation material | |
| CN110408149B (en) | High-cold-resistance polyvinyl chloride cable material and preparation method thereof | |
| KR101019261B1 (en) | Corrugated pipe for electrical cable using recycled polyethylene | |
| CN104479196A (en) | Sound and shock insulating composition for automobile interior decoration industry | |
| WO1999009069A2 (en) | Polyvinyl chloride elastomers | |
| CN109666218A (en) | PP/POE plastics and preparation method thereof for automotive upholstery | |
| CN115141419A (en) | Flame-retardant sound-insulation sheet and preparation method thereof | |
| CN109679314B (en) | PC/ASA plastic for automotive interior parts and production process thereof | |
| CN106633353A (en) | Automobile sound insulation material and preparation method thereof | |
| CN113956571B (en) | Polypropylene composite material and preparation method and application thereof | |
| CN110760129A (en) | Polypropylene material with low linear expansion coefficient and preparation method thereof | |
| CN115011105B (en) | Halogen-free flame-retardant microbeam cable material and preparation method thereof | |
| CN111040362A (en) | Halogen-free flame-retardant sound-insulation ASA/POK alloy material and preparation method thereof | |
| CN112646307B (en) | Low-density, high-rigidity and high-toughness and high-flame-retardance polypropylene composite material for automobile hard plastic instrument board and preparation method thereof | |
| CN114437518A (en) | Low-warpage glass fiber reinforced PBT composition and preparation method and application thereof | |
| CN109265792B (en) | High-resilience halogen-free flame-retardant polyolefin composite foam material and preparation method thereof | |
| CN110283439B (en) | Production process of glass fiber modified PE pipe | |
| CN112795064A (en) | Foaming material with silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure and preparation method thereof | |
| CN112679860A (en) | Special polypropylene composition for automobile hard plastic blasting instrument board and preparation method thereof | |
| CN112521694A (en) | Sound-proof damping felt | |
| JPH0471946B2 (en) | ||
| CN114133644B (en) | Polyolefin foam material with smooth surface and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |