CN105058781A - Preparation method of waste rubber particle noise reduction material - Google Patents
Preparation method of waste rubber particle noise reduction material Download PDFInfo
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- CN105058781A CN105058781A CN201510474822.8A CN201510474822A CN105058781A CN 105058781 A CN105058781 A CN 105058781A CN 201510474822 A CN201510474822 A CN 201510474822A CN 105058781 A CN105058781 A CN 105058781A
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- preparation
- waste rubber
- acoustic damping
- damping materials
- adhesive
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Abstract
The invention discloses a preparation method of a waste rubber particle noise reduction material. The preparation method includes the steps that a cavity of a forming die is filed with waste rubber particles; adhesives are injected into the cavity through a pouring opening in the forming die after die closing; intervals or gaps between the waste rubber particles are filled with the adhesives; and demolding is conducted after solidification forming. The preparation method has the beneficial effects that injection molding and sulfuration are adopted, the process is simple, the production efficiency is high, the die input amount is greatly decreased, the use amount of the waste rubber particles in a noise reduction block is decreased, and cost is reduced.
Description
Technical field
The present invention relates to a kind of preparation method of acoustic damping materials, particularly relate to a kind of method using waste rubber grain to prepare acoustic damping materials.
Background technology
At present, tramcar major part section operates in the middle of city, not only needs to carry out vibration and noise reducing process to wheel and frame system and frame, for the track be laid in the middle of city, and vibration when also as far as possible will reduce vehicle operating and noise.The technique of current employing comparative maturity is, a kind of scrap rubber particle noise reduction block that the web of the rail is fitted, then at noise reduction block outer wall and fill with polyurethane in installing between hole space, can play good vibration and noise reducing effect.
But this noise reduction block adopts cast polyurethane moulding process at present, low-temperature setting, need a large amount of mould turnovers.Production efficiency is low, and cost is high, and mass ratio between scrap rubber particle and polyurethane is also lower, is about 8:2.
Therefore, how to solve above-mentioned noise reduction block Problems existing and become this those skilled in the art's problem demanding prompt solution.
Summary of the invention
Object of the present invention is just to provide a kind of preparation method of waste rubber grain acoustic damping materials, can solve above-mentioned the deficiencies in the prior art part completely.
Object of the present invention is realized by following technical proposals:
A kind of preparation method of waste rubber grain acoustic damping materials, full scrap rubber particle is loaded in the die cavity of mould, in die cavity, inject adhesive by the cast gate on mould after matched moulds, make adhesive be full of gap between scrap rubber particle or space, the shaping rear demoulding to be solidified.
As preferably, after matched moulds, adopt vacuum system to pump air in die cavity, then in die cavity, inject adhesive by the cast gate on mould.
As preferably, described mould is designed with exhaust structure, and when injecting adhesive by cast gate in die cavity, the air in die cavity is discharged by exhaust structure.
As preferably, the particle diameter of described scrap rubber particle is less than or equal to 3mm.
As preferably, the proportion relation of described scrap rubber particle and adhesive is, scrap rubber particle 8 ~ 10 parts, adhesive 1 part.
As preferably, described scrap rubber particle needs to carry out baking preheating before loading mould.
As preferably, during solidification, mould temperature controls at 100 ~ 140 DEG C, and the pressure in die cavity is less than or equal to 8MPa.
As preferably, described adhesive is polyurethane rubber cement or rubber slurry.
As preferably, described polyurethane rubber cement is monocomponent polyurethane or two component polyurethane.
The scrap rubber particle mentioned in the present invention is waste rubber grain, is the particle obtained after screening after waste old is pulverized.
The present invention adopts the sulfuration process of injection-molded item, can high temperature or normal temperature, pressurization or the solidification of normal pressure, high speed or low speed.
Compared with prior art, beneficial effect of the present invention is: technique is simple, and production efficiency is high, greatly reduces mould input amount, improves the consumption of scrap rubber particle in noise reduction block, reduces cost.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment one
A kind of preparation method of waste rubber grain acoustic damping materials, particle diameter is selected to be less than or equal to the scrap rubber particle of 3mm, by for subsequent use after scrap rubber particle pre-heating drying, then in the die cavity of mould, full scrap rubber particle is loaded, vacuum system is adopted to pump air in die cavity after matched moulds, in die cavity, inject adhesive by the cast gate on mould again, make adhesive be full of gap between scrap rubber particle or space, the shaping rear demoulding to be solidified can obtain acoustic damping materials.
The proportion relation of described scrap rubber particle and adhesive is, scrap rubber particle 8 ~ 10 parts, adhesive 1 part.
During solidification, mould temperature controls at 100 ~ 140 DEG C, and the pressure in die cavity is less than or equal to 8MPa, and hardening time is determined according to the proportion relation of product thickness and scrap rubber particle and adhesive.
Described adhesive is polyurethane rubber cement or rubber slurry.Polyurethane rubber cement is to be monocomponent polyurethane, also professional injection machine can be utilized to carry out cast noise reduction block for two component polyurethane.
What high temperature, cure under pressure obtained make an uproar material hot strength is greater than normal temperature, normal pressure solidifies the acoustic damping materials obtained.Its hot strength can reach more than 1Mpa, and percentage elongation can reach more than 100%.
The situation that the especially applicable density difference between scrap rubber particle and polyurethane rubber cement of the present invention is larger.Scrap rubber particle first fills up mould, after matched moulds, owing to there being slight contact between scrap rubber particle, when polyurethane rubber cement injects, can not because density variation is excessive skewness.Even if the density between scrap rubber particle and polyurethane rubber cement has larger difference, adopt this preparation method that scrap rubber distribution of particles also can be made to obtain very even.
Embodiment two
The difference of the present embodiment and embodiment one is, do not need after mould matched moulds to vacuumize, described mould is designed with exhaust structure, and when injecting adhesive by cast gate in die cavity, the air in die cavity is discharged by exhaust structure.
Embodiment three
The difference of the present embodiment and embodiment one is, after acoustic damping materials curing molding, and the demoulding in advance, then adopt baking means to continue solidification.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the preparation method of waste rubber grain acoustic damping materials, it is characterized in that: in the die cavity of mould, load full scrap rubber particle, in die cavity, adhesive is injected by the cast gate on mould after matched moulds, adhesive is made to be full of gap between scrap rubber particle or space, the shaping rear demoulding to be solidified.
2. the preparation method of waste rubber grain acoustic damping materials according to claim 1, is characterized in that: after matched moulds, adopt vacuum system to pump air in die cavity, then in die cavity, inject adhesive by the cast gate on mould.
3. the preparation method of waste rubber grain acoustic damping materials according to claim 1, is characterized in that: described mould is designed with exhaust structure, when injecting adhesive by cast gate in die cavity, the air in die cavity is discharged by exhaust structure.
4. the preparation method of the waste rubber grain acoustic damping materials according to Claims 2 or 3, is characterized in that: the particle diameter of described scrap rubber particle is less than or equal to 3mm.
5. the preparation method of waste rubber grain acoustic damping materials according to claim 4, is characterized in that: the proportion relation of described scrap rubber particle and adhesive is, scrap rubber particle 8 ~ 10 parts, adhesive 1 part.
6. the preparation method of waste rubber grain acoustic damping materials according to claim 5, is characterized in that: described scrap rubber particle needs to carry out baking preheating before loading mould.
7. the preparation method of waste rubber grain acoustic damping materials according to claim 6, is characterized in that: during solidification, mould temperature controls at 100 ~ 140 DEG C, and the pressure in die cavity is less than or equal to 8MPa.
8. the preparation method of the waste rubber grain acoustic damping materials according to any one of claim 5 to 7, is characterized in that: described adhesive is polyurethane rubber cement or rubber slurry.
9. the preparation method of waste rubber grain acoustic damping materials according to claim 8, is characterized in that: described polyurethane rubber cement is monocomponent polyurethane or two component polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510474822.8A CN105058781A (en) | 2015-08-06 | 2015-08-06 | Preparation method of waste rubber particle noise reduction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510474822.8A CN105058781A (en) | 2015-08-06 | 2015-08-06 | Preparation method of waste rubber particle noise reduction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105058781A true CN105058781A (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510474822.8A Pending CN105058781A (en) | 2015-08-06 | 2015-08-06 | Preparation method of waste rubber particle noise reduction material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553835A (en) * | 2018-04-18 | 2019-04-02 | 青岛桐晟桐橡塑科技有限公司 | A kind of disc and its production technology |
| CN109624170A (en) * | 2018-12-24 | 2019-04-16 | 浙江天铁实业股份有限公司 | A kind of tramcar web of the rail sheath forming method |
| CN111393731A (en) * | 2020-03-31 | 2020-07-10 | 陕西长美科技有限责任公司 | Preparation method of rubber particle complex for controlling track vibration and noise |
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|---|---|---|---|---|
| CN1560118A (en) * | 2004-03-10 | 2005-01-05 | 杰 郝 | Floor veneer board and manufacture method |
| JP2005088212A (en) * | 2003-09-12 | 2005-04-07 | Honda Motor Co Ltd | Trim material for car and its manufacturing method |
| CN101613500A (en) * | 2009-04-24 | 2009-12-30 | 上海惠利橡塑制品有限公司 | A kind of method of utilizing waste old to make ground cushion |
| CN103240890A (en) * | 2013-05-15 | 2013-08-14 | 无锡吉兴汽车声学部件科技有限公司 | Method for preparing noise reduction felt for automobile |
| CN103764379A (en) * | 2012-01-26 | 2014-04-30 | 伟尔矿物澳大利亚私人有限公司 | Polymer composites |
-
2015
- 2015-08-06 CN CN201510474822.8A patent/CN105058781A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005088212A (en) * | 2003-09-12 | 2005-04-07 | Honda Motor Co Ltd | Trim material for car and its manufacturing method |
| CN1560118A (en) * | 2004-03-10 | 2005-01-05 | 杰 郝 | Floor veneer board and manufacture method |
| CN101613500A (en) * | 2009-04-24 | 2009-12-30 | 上海惠利橡塑制品有限公司 | A kind of method of utilizing waste old to make ground cushion |
| CN103764379A (en) * | 2012-01-26 | 2014-04-30 | 伟尔矿物澳大利亚私人有限公司 | Polymer composites |
| CN103240890A (en) * | 2013-05-15 | 2013-08-14 | 无锡吉兴汽车声学部件科技有限公司 | Method for preparing noise reduction felt for automobile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553835A (en) * | 2018-04-18 | 2019-04-02 | 青岛桐晟桐橡塑科技有限公司 | A kind of disc and its production technology |
| CN109624170A (en) * | 2018-12-24 | 2019-04-16 | 浙江天铁实业股份有限公司 | A kind of tramcar web of the rail sheath forming method |
| CN111393731A (en) * | 2020-03-31 | 2020-07-10 | 陕西长美科技有限责任公司 | Preparation method of rubber particle complex for controlling track vibration and noise |
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Application publication date: 20151118 |