CN113831634B - Sound insulation composite material with excellent mechanical property and preparation method thereof - Google Patents
Sound insulation composite material with excellent mechanical property and preparation method thereof Download PDFInfo
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- CN113831634B CN113831634B CN202010590561.7A CN202010590561A CN113831634B CN 113831634 B CN113831634 B CN 113831634B CN 202010590561 A CN202010590561 A CN 202010590561A CN 113831634 B CN113831634 B CN 113831634B
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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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention discloses a sound insulation composite material with excellent mechanical property, which comprises the following components in parts by weight; 100 parts of polypropylene, 5-10 parts of sepiolite fibers, 3-5 parts of PET fibers, 5-10 parts of glycidyl methacrylate, 1-2 parts of coupling agent, 2-5 parts of lubricant and 1-2 parts of antioxidant. The invention also discloses a preparation method of the sound insulation composite material. The sound insulation composite material prepared by the invention has excellent sound insulation performance and good mechanical performance. The sepiolite fiber and the PET fiber are compounded, so that the mechanical property and the sound insulation property of the composite material are superior to those of the composite material when the composite material is used alone, and the composite material is superior to the performance of the common filler used as a sound insulation material in the field.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a sound insulation composite material with excellent mechanical properties and a preparation method thereof.
Background
Polypropylene (PP) is a crystalline polymer with a regular structure, is a white granular material or powder, is a tasteless, nontoxic, lightweight thermoplastic resin, has the advantages of easy processing, good impact strength, flexibility and electrical insulation, and the like, and is widely applied to the fields of automobile industry, household appliances, electronics, packaging, building materials, furniture, and the like.
Noise has become a major environmental pollution, and the sound environmental problem is more and more concerned and valued by people. The selection of appropriate materials for sound absorption and insulation is one of the most common and basic technical measures in noise control engineering. The difference between material sound absorption and material sound insulation is that the material sound absorption focuses on the size of the reflected sound energy on the sound source side, and the target is that the reflected sound energy is small; material soundproofing focuses on the amount of transmitted acoustic energy incident on the other side of the source, with the goal being that the transmitted acoustic energy is small.
Sound insulation means that sound or noise is isolated, cut off, separated, etc. by some kind of article. The decibel number associated with incident acoustic energy on one side of a material and transmitted acoustic energy on the other side is the amount of acoustic isolation for that material. For sound insulation, to reduce the transmitted sound energy and block the sound transmission, it is not as porous, loose and permeable as sound absorption material, but it should be heavy and dense. The sound insulation quantity follows the principle of mass law, namely, the larger the unit dense area density of the sound insulation material is, the larger the sound insulation quantity is, and the area density and the sound insulation quantity are in direct proportion.
The sound insulation material has various types, and common materials include solid bricks, reinforced concrete walls, wood boards, gypsum boards, iron plates, sound insulation felts, fiber boards and the like, but the materials have complex processing procedures and limited application range. The thermoplastic resin composite material has the characteristics of high product design freedom, convenient processing and forming, excellent elasticity, chemical corrosion resistance, recyclability and the like, and is widely applied by gradually replacing wood and metal materials, but the mechanical property and the sound insulation effect of the material in the prior art cannot be compatible.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a sound insulation composite material with excellent mechanical property and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme:
a sound insulation composite material with excellent mechanical property comprises the following components in parts by weight;
as a preferable technical scheme, the melt index of the polypropylene under the conditions of 230 ℃ and 2.16kg of load is 20-25g/10min.
Preferably, the length of the sepiolite fiber is 10-15mm, the pH value is 9, and the water content is less than 5%.
As a preferable technical scheme, the length of the PET fiber is 3-12mm, and the diameter of a monofilament is 15-20 microns.
As a preferred technical scheme, the coupling agent is KH550.
Preferably, the lubricant is polypropylene wax, and the number average molecular weight of the polypropylene wax is 2500-3500.
According to a preferable technical scheme, the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168 in a mass ratio of 1.
Another object of the present invention is to provide a method for preparing the sound-insulating composite material with excellent mechanical properties, which comprises the following steps: uniformly mixing polypropylene, sepiolite fibers, PET fibers, glycidyl methacrylate, a lubricant, an antioxidant and a coupling agent, adding the mixture into a double-screw extruder, and mixing, extruding and cooling to obtain a target product. Further preferably, the extrusion temperature of each extrusion interval in the double-screw extruder is 160-170 ℃, 170-180 ℃, 180-190 ℃, 190-200 ℃, 200-210 ℃, 210-220 ℃ and 210-220 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the sound insulation composite material prepared by the invention has excellent sound insulation performance and good mechanical performance. The sepiolite fiber and the PET fiber are compounded, so that the mechanical property and the sound insulation property of the composite material are superior to those of the composite material when the composite material is used alone, and the composite material is further superior to the performance of the common filler used as a sound insulation material in the field; meanwhile, the method has the characteristics of various forming methods, high freedom degree of appearance design, convenience in coloring, recyclability and the like.
Detailed Description
The present invention will be further described with reference to the following examples. It is to be understood that the embodiments described are only a few 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 types and suppliers of reagents used in this example were as follows: the melt index of the polypropylene is 28g/10min, and the manufacturer is Taiwan Tai plastic and the brand K1023. Sepiolite fiber length of 10mm, pH 9, moisture less than 5%, the producer is Shijiazhui Ruiyuan mineral products, inc.; the length of the PET fiber is 10mm, the diameter of the monofilament is 18 microns, and the manufacturer Shandong Lu fiber building materials science and technology company is limited; the manufacturer of the coupling agent KH550, zhengzhou Mitsui Chemicals, inc. Glycidyl methacrylate manufacturers Ningbo Yino Chemicals, inc.; the lubricant is polypropylene wax with the average molecular weight of 2500-3500, and the producer of the lubricant is Korean imported polypropylene wax CS-52NC/53NC; the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168 in a mass ratio of 1. The manufacturers of calcium carbonate, talc and barium sulfate in the comparative example were Shijiazhuangyanbenuo mineral products Co. The reagents are provided only for illustrating the sources and components of the reagents used in the experiments of the present invention, so as to be fully disclosed, and do not indicate that the present invention cannot be realized by using other reagents of the same type or other reagents supplied by other suppliers.
Examples and comparative examples tensile bars used were (170.0 ± 5.0) mm (13.0 ± 0.5) mm (3.2 ± 0.2) mm, tensile rate 50mm/min; the bending sample bar model is (125.0 + -5.0) mm (13.0 + -0.5) mm (3.2 + -0.2) mm, and the bending rate is 1.25mm/min; the cantilever beam notch impact strength sample bars used are of the type: (125.0 +/-5.0) mm (13.0 +/-0.5) mm (3.2 +/-0.2) mm, machining the notch, and cutting to obtain notch depth (2.6 +/-0.2) mm.
Example 1
100 parts of polypropylene, 5 parts of sepiolite fibers, 3 parts of PET fibers, 5 parts of glycidyl methacrylate, 2 parts of lubricant, 1 part of antioxidant and 1 part of coupling agent KH550 are uniformly mixed, added into a double-screw plate extruder, and subjected to mixing, extrusion and cooling to obtain a final product. Wherein the extrusion temperatures of the extrusion zones in the twin-screw extruder are respectively 160 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, 210 ℃ and 210 ℃.
Example 2
100 parts of polypropylene, 10 parts of sepiolite fibers, 5 parts of PET fibers, 10 parts of glycidyl methacrylate, 5 parts of lubricant, 2 parts of antioxidant and 550 parts of coupling agent KH are uniformly mixed, added into a double-screw plate extruder, and subjected to mixing, extrusion and cooling to obtain a final product. Wherein the extrusion temperatures of the extrusion zones in the twin-screw extruder are respectively 170 ℃, 180 ℃, 190 ℃, 200 ℃, 210 ℃, 220 ℃.
Example 3
100 parts of polypropylene, 8 parts of sepiolite fibers, 4 parts of PET fibers, 8 parts of glycidyl methacrylate, 3 parts of lubricant, 2 parts of antioxidant and 550 parts of coupling agent KH are uniformly mixed, added into a double-screw plate extruder, and subjected to mixing, extrusion and cooling to obtain a final product. Wherein the extrusion temperatures of the extrusion zones in the twin-screw extruder are 165 ℃, 175 ℃, 185 ℃, 195 ℃, 205 ℃, 215 ℃ and 215 ℃ respectively.
Comparative example 1
100 parts of polypropylene, 12 parts of sepiolite fibers, 5 parts of glycidyl methacrylate, 2 parts of a lubricant, 1 part of an antioxidant and 550 parts of a coupling agent KH are uniformly mixed, added into a double-screw plate extruder, and subjected to mixing, extrusion and cooling to obtain a final product. Wherein the extrusion temperatures of the extrusion zones in the twin-screw extruder are respectively 160 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, 210 ℃ and 210 ℃.
Comparative example 2
100 parts of polypropylene, 12 parts of PET fiber, 5 parts of glycidyl methacrylate, 2 parts of lubricant, 1 part of antioxidant and 550 parts of coupling agent KH are uniformly mixed, added into a double-screw plate extruder, and subjected to mixing, extrusion and cooling to obtain the final product. Wherein the extrusion temperatures of the extrusion zones in the twin-screw extruder are respectively 160 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, 210 ℃ and 210 ℃.
Comparative example 3
100 parts of polypropylene, 12 parts of barium sulfate, 5 parts of glycidyl methacrylate, 2 parts of a lubricant, 1 part of an antioxidant and 550 parts of a coupling agent KH are uniformly mixed, added into a double-screw plate extruder, and subjected to mixing, extrusion and cooling to obtain a final product. Wherein the extrusion temperatures of the extrusion zones in the double-screw extruder are respectively 160 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, 210 ℃ and 210 ℃.
Comparative example 4
100 parts of polypropylene, 12 parts of talcum powder, 5 parts of glycidyl methacrylate, 2 parts of lubricant, 1 part of antioxidant and 550 parts of coupling agent KH are uniformly mixed, added into a double-screw plate extruder, and subjected to mixing, extrusion and cooling to obtain a final product. Wherein the extrusion temperatures of the extrusion zones in the twin-screw extruder are respectively 160 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, 210 ℃ and 210 ℃.
Comparative example 5
100 parts of polypropylene, 12 parts of calcium carbonate, 5 parts of glycidyl methacrylate, 2 parts of a lubricant, 1 part of an antioxidant and 550 parts of a coupling agent KH are uniformly mixed, added into a double-screw plate extruder, and subjected to mixing, extrusion and cooling to obtain a final product. Wherein the extrusion temperatures of the extrusion zones in the double-screw extruder are respectively 160 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, 210 ℃ and 210 ℃.
TABLE 1 results of measuring properties of products obtained in examples and comparative examples
As can be seen from table 1, the soundproof composite material of the present invention has good mechanical properties while having excellent soundproof properties. The sepiolite fiber and the PET fiber are compounded, so that the mechanical property and the sound insulation property of the composite material are superior to those of the composite material when the composite material is used alone, and the composite material is further superior to the performance of the common filler used as a sound insulation material in the field.
Claims (7)
1. A sound insulation composite material with excellent mechanical properties is characterized in that: the composition comprises the following components in parts by weight:
100 Parts of Polypropylene (PP),
5-10 parts of sepiolite fibers,
3-5 parts of PET (polyethylene terephthalate) fiber,
5-10 parts of glycidyl methacrylate,
1-2 parts of a coupling agent,
2-5 parts of a lubricating agent,
1-2 parts of an antioxidant;
the length of the sepiolite fiber is 10-15mm, and the water content is less than 5%;
the length of the PET fiber is 3-12mm, and the monofilament diameter is 15-20 microns.
2. The soundproof composite material excellent in mechanical property according to claim 1, wherein: the melt index of the polypropylene under the conditions of 230 ℃ and 2.16kg of load is 20-25g/10min.
3. The soundproof composite material excellent in mechanical property according to claim 1, wherein: the coupling agent is KH550.
4. The soundproof composite material excellent in mechanical property according to claim 1, wherein: the lubricant is polypropylene wax, and the number average molecular weight of the lubricant is 2500 to 3500.
5. The soundproof composite material excellent in mechanical property according to claim 1, wherein: the antioxidant is a mixture consisting of an antioxidant 1010 and an antioxidant 168 according to a mass ratio of 1.
6. The method for preparing a soundproof composite material excellent in mechanical property according to any one of claims 1 to 5, characterized in that: the method comprises the following steps: uniformly mixing polypropylene, sepiolite fibers, PET fibers, glycidyl methacrylate, a lubricant, an antioxidant and a coupling agent, adding the mixture into a double-screw extruder, and mixing, extruding and cooling to obtain a target product.
7. The method of manufacturing according to claim 6, characterized in that: the extrusion temperature of each extrusion interval in the double-screw extruder is 160-170 ℃, 170-180 ℃, 180-190 ℃, 190-200 ℃, 200-210 ℃, 210-220 ℃ and 210-220 ℃ respectively.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324831A (en) * | 1974-11-14 | 1982-04-13 | Montedison S.P.A. | Formed structures based on synthetic fibers and having soundproofing properties |
| JPH04202545A (en) * | 1990-11-30 | 1992-07-23 | Showa Denko Kk | Filament-containing resin composition and its production |
| JPH06306216A (en) * | 1993-04-27 | 1994-11-01 | Idemitsu Petrochem Co Ltd | Polyolefinic resin composition |
| JPH0718129A (en) * | 1993-06-29 | 1995-01-20 | Chisso Corp | Long fiber-reinforced thermoplastic resin composition having excellent spreadability in mold for melt compression molding and long fiber-reinforced heat-resistant stampable sheet made thereof |
| JP2006317805A (en) * | 2005-05-13 | 2006-11-24 | Kuraray Co Ltd | Sound insulating fiber and soundproof material |
| CN102002183A (en) * | 2010-09-28 | 2011-04-06 | 南京乐金熊猫电器有限公司 | Polypropylene-modified sound insulation material and preparation method thereof |
| CN103160018A (en) * | 2011-12-08 | 2013-06-19 | 合肥杰事杰新材料股份有限公司 | High toughness sound insulation composite material and preparation method thereof |
| CN103849067A (en) * | 2012-12-07 | 2014-06-11 | 上海杰事杰新材料(集团)股份有限公司 | Enhanced antistatic polypropylene composite material and preparation method thereof |
| CN108948487A (en) * | 2018-06-20 | 2018-12-07 | 东北林业大学 | A kind of long fibre or continuous fiber orientation enhancing thermoplastic polymer composite material and preparation method thereof |
| CN109054307A (en) * | 2018-06-06 | 2018-12-21 | 汪涛 | A kind of weather-proof PET/PC alloy material of shock resistance and preparation method thereof |
| CN109465941A (en) * | 2018-12-24 | 2019-03-15 | 福建农林大学 | A kind of extremely-low density composite fiber plate and its manufacturing method |
| WO2019069315A1 (en) * | 2017-10-05 | 2019-04-11 | Hil Limited (Formerly Hyderabad Industries Limited) | Light-weight & high strength non-asbestos corrugated fiber cement roofing sheets manufactured by autoclave method |
| CN111116829A (en) * | 2020-01-07 | 2020-05-08 | 河南理工大学 | Polyvinyl chloride graft copolymer and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11053378B2 (en) * | 2016-10-28 | 2021-07-06 | Asahi Kasei Plastics North America, Inc. | Polyolefin resin composition |
-
2020
- 2020-06-24 CN CN202010590561.7A patent/CN113831634B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324831A (en) * | 1974-11-14 | 1982-04-13 | Montedison S.P.A. | Formed structures based on synthetic fibers and having soundproofing properties |
| JPH04202545A (en) * | 1990-11-30 | 1992-07-23 | Showa Denko Kk | Filament-containing resin composition and its production |
| JPH06306216A (en) * | 1993-04-27 | 1994-11-01 | Idemitsu Petrochem Co Ltd | Polyolefinic resin composition |
| JPH0718129A (en) * | 1993-06-29 | 1995-01-20 | Chisso Corp | Long fiber-reinforced thermoplastic resin composition having excellent spreadability in mold for melt compression molding and long fiber-reinforced heat-resistant stampable sheet made thereof |
| JP2006317805A (en) * | 2005-05-13 | 2006-11-24 | Kuraray Co Ltd | Sound insulating fiber and soundproof material |
| CN102002183A (en) * | 2010-09-28 | 2011-04-06 | 南京乐金熊猫电器有限公司 | Polypropylene-modified sound insulation material and preparation method thereof |
| CN103160018A (en) * | 2011-12-08 | 2013-06-19 | 合肥杰事杰新材料股份有限公司 | High toughness sound insulation composite material and preparation method thereof |
| CN103849067A (en) * | 2012-12-07 | 2014-06-11 | 上海杰事杰新材料(集团)股份有限公司 | Enhanced antistatic polypropylene composite material and preparation method thereof |
| WO2019069315A1 (en) * | 2017-10-05 | 2019-04-11 | Hil Limited (Formerly Hyderabad Industries Limited) | Light-weight & high strength non-asbestos corrugated fiber cement roofing sheets manufactured by autoclave method |
| CN109054307A (en) * | 2018-06-06 | 2018-12-21 | 汪涛 | A kind of weather-proof PET/PC alloy material of shock resistance and preparation method thereof |
| CN108948487A (en) * | 2018-06-20 | 2018-12-07 | 东北林业大学 | A kind of long fibre or continuous fiber orientation enhancing thermoplastic polymer composite material and preparation method thereof |
| CN109465941A (en) * | 2018-12-24 | 2019-03-15 | 福建农林大学 | A kind of extremely-low density composite fiber plate and its manufacturing method |
| CN111116829A (en) * | 2020-01-07 | 2020-05-08 | 河南理工大学 | Polyvinyl chloride graft copolymer and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 降噪复合织物的研究;罗以喜;《上海纺织科技》;20040430;第32卷(第02期);全文 * |
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