CN103849155B - Fibre cork rubber encapsulant and preparation method thereof - Google Patents
Fibre cork rubber encapsulant and preparation method thereof Download PDFInfo
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- CN103849155B CN103849155B CN201210522356.2A CN201210522356A CN103849155B CN 103849155 B CN103849155 B CN 103849155B CN 201210522356 A CN201210522356 A CN 201210522356A CN 103849155 B CN103849155 B CN 103849155B
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Abstract
The invention discloses Fibre cork rubber encapsulant and preparation method thereof, solve the problem that existing gasket seal hot strength is relatively low, compressive property is low, the change of stress relaxation performance is big.The present invention is mainly made up of the material of following percentage by weight: latex 8%～35%, graininess cork 20%～65%, fiber 5%～40%, compounding ingredient 1.2%～6%, and remaining is inserts, described fiber a length of more than 1.0mm, but less than 30.0mm.The present invention has raising hot strength, compressive property is low in increase, be prevented effectively from the advantages such as the change of stress relaxation performance is big.
Description
Technical field
The present invention relates to a kind of sealed liner, specifically refer to Fibre cork rubber encapsulant and preparation method thereof.
Background technology
The material of cork-rubber plate is to be equipped with various synthetic rubber and other auxiliary material as raw material, use with granulated cork
The general mill manufacturing rubber or banbury are granulated cork and synthetic rubber and the auxiliary material including inserts
Material uniformly mixing, after being rolled into, then forms finished product sulfuration.Granulated cork is to be full of the suberin cell of air by many to gather
Synthesis, cell wall has the skeleton of cellulose material, it covers suberin and cork wax so that it is become a kind of waterproof material,
Because without rotten, there is no obvious aging sign yet.
Cork strip has that density is low, compressible, flexible, do not conducts heat, non-conductive, airtight, durable, water proof, protection against the tide,
Oil resistant, acidproof, corrosion resistance, vibration damping, sound insulation, a series of good characteristics such as fire-retardant, wear-resisting, be a kind of well encapsulant.
, cork-rubber panel material still also exists some insoluble drawbacks, such as: granulated cork, due to surface imperfection, enters
And there is the chemical composition that many is not easy to be combined with rubber, so needing comparatively large number of rubber just can be bonded to open, but
Owing to having substantial amounts of rubber, after it is bonded to, the hot strength of finished product is relatively low, such as encounter during application intrinsic pressure slightly
High parts, gasket seal is often ruptured by impact extrusion because intensity is not enough, causes the medium in parts to leak out.
And gasket seal is in use, need bolt that the flange face of joint is integrated fastening with gasket seal surface, is twisting
Directly enclosure pressure, i.e. flange pressure can be applied to sheet gasket structure by flange face during tight bolt.The knot of existing gasket seal
Structure fastens not, and compressive property is low, gasket construction can be crushed, cause pad to lose the effect of sealing under conventional flange pressure
Can, and then make medium leak out.Simultaneously as the effect of flange pressure, at pressurized, the constituent structure of encapsulant can be to subtracting
The direction creeping deformation of pressure, thus cause the stress relaxation performance of pad to become big.Flange pressure is the biggest, the stress pine of gasket material
Speeding can be the biggest, thus causes the thickness of gasket construction can be the most thinning, with flange face and the pad of bolt fastening in sealing system
The contact surface of sheet can come up, and then causes medium to leak out.
Summary of the invention
The purpose of the present invention mainly solves that existing gasket seal hot strength is relatively low, compressive property is low, stress is loose
Performance of speeding becomes big problem, it is provided that a kind of Fibre cork rubber encapsulant solving the problems referred to above and preparation method thereof.
The present invention is achieved through the following technical solutions:
Fibre cork rubber encapsulant, is mainly made up of the material of following percentage by weight:
Latex 8%～35%
Graininess cork 20%～65%
Fiber 5%～40%
Compounding ingredient 1.2%～6%,
Remaining is inserts, described fiber a length of more than 1.0mm, but less than 30.0mm.
Further, described fiber includes Plant fiber and synthetic fibers.
Further, described fiber also includes inorfil.
Preferred as one, described Plant fiber is selected from cotton fiber, flaxen fiber, palm fibre fiber, the wood fiber, bamboo fibre, grass fibre
Dimension；Described synthetic fibers are selected from nylon fiber, aramid fiber, dacron, polyacrylonitrile fibre；Described inorfil is selected from ore deposit
Cotton fiber, glass fibre, ceramic fibre, carbon fiber.
It addition, the size of described graininess cork is 20～320 mesh.
Preferably, the size of described graininess cork is 40～200 mesh.
Preferred as another kind, described inserts is silicate mineral inserts；Described latex is selected from butyronitrile latex, butylbenzene
Latex, neoprene latex, polyacrylonitrile latex, natural emulsion, carboxyl latex, butyl latex, fluorine latex, silicon latex.
As the configuration mode having most, the compounding ingredient of described 1.2%～6% percentage by weight includes 0.2%～1% weight percent
The zinc oxide of ratio, 0.2%～1% percentage by weight thiofide, 0.2%～1% percentage by weight sulfur, 0.2%～
The age resistor of 1% percentage by weight, 0.2%～1% percentage by weight stabilizer and the pigment of 0.2%～1% percentage by weight.
The preparation method of Fibre cork rubber encapsulant, mainly comprises the steps of:
(1) fiber is carried out the modification in paper technology, after graininess cork, inserts are mixed homogeneously with compounding ingredient
Obtain mixture；
(2) fiber and the mixture mix and blend after processing, dispersed after add latex and flocculant is starched
Material；
(3) after slurry fully flocculates, then pass sequentially through copying in paper technology and take, be dehydrated, become, make after drying steps
Sheet material.
In order to obtain more conforming to the Fibre cork rubber encapsulant of user demand, described sheet material by roll-in or/
Finished product is made with after the step of sulfuration.
The present invention has the following advantages and beneficial effect:
1, the product of the present invention not only has tough physical property, at the loose aspect of resistance to compression and creep resistant than existing cork rubber
Offset plate material more can obtain considerable improvement, and meanwhile, the cork rubber sealing material that the present invention produces also has excellent
Sealing property more.
2, the present invention uses the technique being similar to papermaking with water for medium, and the raw material making gasket material be used is situated between at water
Matter presents negative charge, thus ensures between raw material mutually exclusive because of negative charge, and then the dispersion being favorably improved between raw material
Effect, allows fiber can be uniformly dispersed between cork and synthetic rubber without conglomeration, is effectively increased the Physical Mechanical of the present invention
Energy.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated, but embodiments of the present invention are not limited to this.
Embodiment 1
The proportioning being respectively adopted in table 1 below produces the fiber cork rubber of tri-kinds of different fiber contents of A, B, C of the present invention
Glue encapsulant,
Table 1
| Sample type | A | B | C |
| Fiber | 22% | 8% | 35% |
| Graininess cork | 37% | 40% | 37% |
| Silicate mineral inserts | 13% | 24% | 10% |
| Latex | 23% | 23% | 23% |
| Compounding ingredient | 5% | 5% | 5% |
Wherein, fiber is the wood fiber, and the size of graininess cork is 100 mesh, and latex uses the fine latex of fourth.
The preparation method of above-mentioned tri-kinds of Fibre cork rubber encapsulants of A, B, C is as follows:
It is modified the wood fiber processing, concretely comprises the following steps: the wood fiber is put in pulper, add water the wood fiber is dense
Degree is diluted to about 4%, at a high speed making beating ten minutes, makes wood fiber dispersion form wood pulp cellulose, then by the disc mill handle of paper grade (stock)
Wood pulp cellulose micro fibrillation is to the slurry (note: the most general drainability only representing paper pulp of beating degree that beating degree is 30～40 ° of SR
Can, but paper industry the most usual represent fiber through disc mill dimension fibrillating degree).
In another pulper, put into inserts, graininess cork and compounding ingredient by above-mentioned formula, be diluted with water to the most former
Material concentration is 6～8%, and high-speed stirred ten minutes is fully dispersed is mixed to get mixture.
Modified wood pulp cellulose slurry is added in the pulper containing mixture, is diluted with water to mixed slurry concentration about
2%, continue stir about 20 minutes until the fully dispersed mixing of slurry.
Adding the fine latex of fourth, stir about 5 minutes is until latex is sufficiently mixed with the slurry in mixing pit, and add water adjustment making beating
Concentration to 1%, uniformly after slurry delivered to copy take paper machine and copy to take and be dehydrated into sheet material.
After sheet material is fully dried, after roll squeezer roll-in to predetermined thickness, sheet material is delivered to vulcanizing press and adds
Heat cure (curing temperature: 150C, sulfide stress: 2MPa, cure time: 4-6 minute), ultimately forms the fiber of the present invention
Cork-rubber material.
The finished product of the tri-kinds of different fiber contents of A, B, C prepared in the present embodiment is detected, and to fiberless soft
In wood elastomeric material and prior art, cork fibrous elastomeric material is detected, and wherein, fiberless cork-rubber material is
Obtaining from market, its composition not fibre-bearing, cork content is similar with present example cork content.Testing result such as following table
2,
Table 2
| Detection project | A | B | C | Fiberless cork Elastomeric material | In prior art, cork is fine Dimension elastomeric material |
| Fiber content | 22% | 8% | 35% | 0% | 6% |
| Density (gram/cc) | 1.05 | 1.1 | 1.05 | 1.05 | 1.1 |
| Thickness (millimeter) | 1.2 | 1.2 | 1.25 | 1.25 | 1.25 |
| Hot strength, MPA | 16.6 | 7.1 | 25. | 2.36 | 4.5 |
| Compression ratio (%) | 14.6 | 13.0 | 15.1 | 17.5 | 15.2 |
| Rebound degree (%) | 74.2 | 65.4 | 70.3 | 72.9 | 70.78 |
| #903 lubricating oil immersion test (150 C, 5 hours) | |||||
| Leaching after-drawing intensity, MPA | 9.45 | 5.4 | 15.4 | 1.19 | 2.85 |
| Oil absorbency (%) | 19.2 | 12.3 | 17.5 | 11.4 | 12.7 |
| Thicken rate (%) | 7.8 | 5.2 | 7.3 | 4.8 | 4.8 |
| Crush test(3) | 85Mpa | 35Mpa | 116Mpa | Not resistance to compression | 15Mpa |
| Stress relaxation | 35% | 60% | 32% | 》90% | 74% |
| Oil seal | Do not leak | Do not leak | Do not leak | Do not leak | Do not leak |
By above-mentioned table 2 can fully demonstrating, adding fiber in cork-rubber gasket material can increase the strong of product
Degree and compressive property, it is also possible to lower the stress relaxation ability of gasket material.Meanwhile, it is strong for tri-kinds of finished products of A, B, C of the present invention
Degree, resistance to compression, and stress relaxation etc. performance etc. is respectively provided with significantly raising.
Embodiment 2
The present embodiment is to use different types of fiber to make Fibre cork rubber encapsulant, different from embodiment 1
Point is only that, in the present embodiment, the composition of each material is different with proportioning, and the present embodiment is by table 3 below five kinds of formula and the thing of proportioning
Matter forms,
Table 3
| Sample type | 1a | 1b | 1c | 1d | 1f |
| Wood pulp cellulose | 18% | ||||
| Folium Bambusae fiber | 18% | ||||
| Flaxen fiber | 18% | ||||
| Aramid fiber | 18% | ||||
| Acrylic fiber | 18% | ||||
| Fine grained cork | 37% | 37% | 37% | 37% | 37% |
| Silicate mineral inserts | 17% | 17% | 17% | 17% | 17% |
| Latex (fourth is fine) | 23% | 23% | 23% | 23% | 23% |
| Dispersant | 1% | 1% | 1% | 1% | 1% |
| Compounding ingredient | 4% | 4% | 4% | 4% | 4% |
Use the physical property tabular of the Fibre cork rubber encapsulant that above formula makes in table 4:
Table 4
| Detection project | 1a | 1b | 1c | 1d | 1f |
| Density (gram/cc) | 1.02 | 1.05 | 1.02 | 1.05 | 1.06 |
| Thickness (millimeter) | 1.2 | 1.3 | 1.25 | 1.2 | 1.2 |
| Hot strength, MPA | 13.5 | 12.2 | 10.7 | 15.4 | 10.2 |
| Compression ratio (%) | 14.6 | 13.2 | 13.6 | 14.3 | 14.1 |
| Rebound degree (%) | 69.3 | 67.2 | 64.2 | 65.4 | 58.2 |
| #903 lubricating oil immersion test (150 C, 5 hours) | |||||
| Leaching after-drawing intensity, MPA | 8.3 | 7.4 | 7.2 | 10.4 | 6.3 |
| Oil absorbency (%) | 18.3 | 16.2 | 16.4 | 17.5 | 20.3 |
| Thicken rate (%) | 8.4 | 7.2 | 7.1 | 7.9 | 8.3 |
| Crush test (3) | 90Mpa | 74Mpa | 74Mpa | 105Mpa | 55Mpa |
| Stress relaxation | 32% | 36% | 38% | 30% | 45% |
| Oil seal | Do not leak | Do not leak | Do not leak | Do not leak | Do not leak |
The above results fully demonstrates the popularity of the fiber that the present invention uses, and the fiber of the most natural character is (such as wood
Pulp fibres, Folium Bambusae fiber, or flaxen fiber) or artificial synthetic fiber (such as aramid fiber, or acrylic), the technique that all can be used in the present invention
Reinforcing fiber as Fibre cork rubber encapsulant.
Embodiment 3
The present embodiment is to use different types of composite fibre, includes organic fiber and inorfil, is applied to fiber soft
In wood rubber packing material, its formula components such as table 5 below:
Table 5
| Sample type | 2a | 2b | 2c | 2d | 2f |
| Wood pulp cellulose | 12% | 8% | 10% | ||
| Mineral wool fiber | 14% | 14% | |||
| Dacron | 8% | 10% | |||
| Aramid fiber | 6% | 8% | 7% | ||
| Fine grained cork | 37% | 35% | 37% | 35% | 37% |
| Silicate mineral inserts | 17% | 15% | 17% | 15% | 18% |
| Latex (fourth is fine) | 23% | 23% | 23% | 23% | 23% |
| Dispersant | 1% | 1% | 1% | 1% | 1% |
| Compounding ingredient | 4% | 4% | 4% | 4% | 4% |
Use the physical property table of the Fibre cork rubber encapsulant that above formula makes in the present inventive method
It is listed in the table below 3:
Table 6
| Sample type | 2a | 2b | 2c | 2d | 2f |
| Density (gram/cc) | 1.1 | 1.05 | 1.02 | 1.1 | 1.04 |
| Thickness (millimeter) | 1.2 | 1.25 | 1.25 | 1.28 | 1.2 |
| Hot strength, MPA | 16.9 | 8.4 | 14.3 | 10.3 | 14.8 |
| Compression ratio (%) | 14.7 | 12.5 | 13.2 | 11.9 | 13.9 |
| Rebound degree (%) | 68.4 | 62.3 | 64.5 | 62.7 | 63.7 |
| #903 lubricating oil immersion test (150 C, 5 hours) | |||||
| Leaching after-drawing intensity, MPA | 10.3 | 6.1 | 9.6 | 7.2 | 10.5 |
| Oil absorbency (%) | 17.4 | 14.3 | 15.1 | 15.4 | 14.9 |
| Thicken rate (%) | 8.6 | 8.1 | 7.5 | 7.7 | 8.9 |
| Crush test(3) | 95Mpa | 45Mpa | 74Mpa | 64Mpa | 74Mpa |
| Oil seal | Do not leak | Do not leak | Do not leak | Do not leak | Do not leak |
From the results shown in Table 6, the present invention not only can use single kind of fiber, is used in mixed way also with different fibers
Results of property as the best in the result of embodiment 1 and embodiment 2 can be reached.
More worth mention is in the sample 2b in embodiment 3 and sample 2d, and it is fine that the fiber that formula uses includes mineral wool
Dimension, when producing cork fibrous elastomeric material with rubber sweetening process, the production equipment no matter used belongs to that type, dispensing
Dispersion and mixing are all by shearing, smashing to pieces, friction, and the mechanism of kneading etc. fierceness is carried out.General inorfil (bag
Include mineral wool fiber or glass fibre) due to structure the most harder crisp, often by fierce in the production process of rubber system refining
Mechanism is cut off and is smashed to pieces and lose reinforcement effect of fiber completely.
Sample 2b in the present embodiment and the performance of sample 2d, not only have good hot strength, and the stiffness of sample is also
Better than other samples without mineral wool, fully prove reach to use effect expected from mineral wool fiber, demonstrate this most further
The method of invention is superiority to formula material use when producing cork fibrous elastomeric material.
Embodiment 4
The present embodiment is to use different types of emulsion binder, its formula components such as table 7 below:
Table 7
| Sample type | 3a | 3b | 3c | 3d | 3f |
| Synthetic organic fibre | 22% | 22% | 22% | 22% | 22% |
| Fine grained cork | 37% | 37% | 37% | 37% | 37% |
| Silicate mineral inserts | 13% | 13% | 14% | 14% | 13% |
| The fine latex of fourth | 23% | 10% | |||
| Butadiene-styrene latex | 22% | 12% | |||
| Neoprene latex | 20% | ||||
| Natural emulsion | 20% | ||||
| Dispersant | 1% | 1% | 1% | 1% | 1% |
| Compounding ingredient | 4% | 5% | 6% | 6% | 4% |
Use the physical property table of the Fibre cork rubber encapsulant that above formula makes in the present inventive method
It is listed in table 8:
Table 8
| Detection project | 3a | 3b | 3c | 3d | 3f |
| Density (gram/cc) | 1.1 | 1.15 | 1.02 | 1.1 | 1.05 |
| Thickness (millimeter) | 1.24 | 1.2 | 1.25 | 1.25 | 1.2 |
| Hot strength, MPA | 17.1 | 13.5 | 13.2 | 11.2 | 14.8 |
| Compression ratio (%) | 14.7 | 15.3 | 16.2 | 15.4 | 14.2 |
| Rebound degree (%) | 69.2 | 70.3 | 68.3 | 66.3 | 63.5 |
| #903 lubricating oil immersion test (150 C, 5 hours) | |||||
| Leaching after-drawing intensity, MPA | 9.95 | 8.5 | 8.2 | 7.2 | 10.2 |
| Oil absorbency (%) | 17.3 | 20.4 | 21.2 | 18.3 | 16.3 |
| Thicken rate (%) | 8.4 | 14.5 | 15.3 | 16.2 | 8.9 |
| Crush test(3) | 90Mpa | 45Mpa | 45Mpa | 50Mpa | 75Mpa |
| Oil seal | Do not leak | Do not leak | Do not leak | Do not leak | Do not leak |
From the results shown in Table 8, the present invention not only can use different types of emulsion binder, it is also possible to not
Congener latex is used in mixed way, the superiority of the most lossless present invention.
Can be drawn by above-described embodiment, formula and method by the present invention combine and can effectively realize improving stretching by force
Spend, compressive property is low in increase, be prevented effectively from the purpose that the change of stress relaxation performance is big.As it has been described above, just can preferably realize this
Invention.
Claims (8)
1. Fibre cork rubber encapsulant, it is characterised in that be mainly made up of the material of following percentage by weight:
Latex 8%～35%
Graininess cork 20%～65%
Fiber 5%～40%
Compounding ingredient 1.2%～6%,
Remaining is inserts, described fiber a length of more than 1.0mm, but less than 30.0mm；
Wherein, compounding ingredient include the zinc oxide of 0.2%～1% percentage by weight, 0.2%～1% percentage by weight the vulcanization of rubber promote
Enter agent, 0.2%～1% sulfur, 0.2%～1% age resistor, 0.2%～1% percentage by weight of percentage by weight of percentage by weight
Stabilizer and the pigment of 0.2%～1% percentage by weight；
Its preparation method is as follows:
(1) fiber carrying out the modification in paper technology, graininess cork, inserts obtain after mixing homogeneously with compounding ingredient
Mixture；
(2) fiber and the mixture mix and blend after processing, dispersed after add latex and flocculant obtains slurry；
(3) after slurry fully flocculates, then pass sequentially through copying in paper technology take, be dehydrated, become, manufactured Board after drying steps
Material.
Fibre cork rubber encapsulant the most according to claim 1, it is characterised in that described fiber includes Plant fiber
Or synthetic fibers.
Fibre cork rubber encapsulant the most according to claim 2, it is characterised in that also include inorganic in described fiber
Fiber.
Fibre cork rubber encapsulant the most according to claim 3, it is characterised in that described Plant fiber is selected from cotton fine
Dimension, flaxen fiber, palm fibre fiber, the wood fiber, bamboo fibre, grass fiber；Described synthetic fibers are selected from nylon fiber, aramid fiber, polyester
Fiber, polyacrylonitrile fibre；Described inorfil is selected from mineral wool fiber, glass fibre, ceramic fibre, carbon fiber.
Fibre cork rubber encapsulant the most according to claim 1, it is characterised in that the size of described graininess cork
It is 20～320 mesh.
Fibre cork rubber encapsulant the most according to claim 5, the size of described graininess cork is 40～200
Mesh.
7. according to the Fibre cork rubber encapsulant described in any one of claim 1～6, it is characterised in that described inserts
For silicate mineral inserts；Described latex is selected from butyronitrile latex, butadiene-styrene latex, neoprene latex, polyacrylonitrile latex, genuine milk
Glue, carboxyl latex, butyl latex, fluorine latex, silicon latex.
Fibre cork rubber encapsulant the most according to claim 1, it is characterised in that described sheet material by roll-in or/
Finished product is made with after the step of sulfuration.
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| CN107542249A (en) * | 2017-10-09 | 2018-01-05 | 常州莱尚纺织品有限公司 | A kind of cork-rubber composite floor board |
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Address after: 610000 Chengdu City, New District, Sichuan stone beach town Guangming Village Shilong Road, No. 88 Patentee after: Chengdu Jun Ma sealing Polytron Technologies Inc Address before: 610000 Chengdu City, New District, Sichuan stone beach town Guangming Village Shilong Road, No. 88 Patentee before: CHENGDU JUNMA SEALING PRODUCTS CO., LTD. |
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Denomination of invention: Fiber cork rubber sealing material and its preparation method Effective date of registration: 20200907 Granted publication date: 20160928 Pledgee: Chengdu SME financing Company Limited by Guarantee Pledgor: CHENGDU JUNMA SEALING TECHNOLOGY Co.,Ltd. Registration number: Y2020980005787 |
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