CN1141230A - Non-asbestos expanding type sealing plate and method for making same - Google Patents
Non-asbestos expanding type sealing plate and method for making same Download PDFInfo
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- CN1141230A CN1141230A CN 95107590 CN95107590A CN1141230A CN 1141230 A CN1141230 A CN 1141230A CN 95107590 CN95107590 CN 95107590 CN 95107590 A CN95107590 A CN 95107590A CN 1141230 A CN1141230 A CN 1141230A
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Abstract
Its main ingredients are as follows: (wt%) 10-18% of latex, 25-50% of silicate mineral filling material, 5-8% of compounding aid and 25-50% of plant fibre. Its compounding aid is conventional zinc oxide, sulfur and accelerant, etc. and the fibre is lignin cellulose, and its latex is a mixed latex of NBR latex, etc.. The above-mentioned raw materials are passed through a strict production process so as to obtain the invented sealing plate which can be used below 150 deg.C and whose tensile strength is one-fold greater than that of asbestos type. Besides, said product doesn't contain asbestos, so that it has no harm to human health.
Description
The present invention relates to seal the material of usefulness, more particularly, be related to a kind of swelling type sealing plate that does not contain asbestos.
At present, in the dynamic power machine of automobile, boats and ships etc., still using the asbestos latex plate of mainly forming in large quantities by asbestos, latex and all kinds of other composition (being referred to as compounding ingredient).In this latex plate, the content of asbestos accounts for the 70-80% of total amount, and latex accounts for the 10-14% of total amount, and compounding ingredient is a surplus.In asbestos latex board manufacturing process, asbestos add in the mode that is processed into asbestos wool usually.Compounding ingredient then is the various chemical substances of zinc oxide, sulphur, promoter, age resistor, stabilizing agent and dispersant etc.Generally, the latex plate of being made by above component has preferable physical property, for example demonstrates good flexible, compression and back elastic force, lower stress relaxation; Good sealing effectiveness, service condition or the environment to water, oil, vapour can keep more permanent sealing down especially; The bigger scope of application is arranged, promptly can replace paper washer, cork pad is used for the lubricating oil static seal pad of engine or internal combustion engine etc.But,, in making and using, always exist damaging effect, so hamper the application and the development of swelling type latex plate in above power machine industry of asbestos always to human body because the latex plate of above-mentioned prior art contains asbestos.This is because when producing asbestos latex plate, and the asbestos of fine hair shape or dust-like can drift and be suspended on the water surface in the air neutralization, influences environment and is detrimental to health.
The object of the present invention is to provide a kind of do not contain asbestos and on the performance near or have in addition surpass non-asbestos swelling type latex plate or the sealing plate contain asbestos swelling type latex plate.
For achieving the above object, non-asbestos swelling type sealing plate of the present invention mainly contains latex, silicate mineral filler, compounding ingredient and fibrous material, and wherein, described fibrous material is a string, and the ratio of each component of described sealing plate is as follows:
Latex 10-18wt%
Silicate mineral inserts 25-50wt%
Compounding ingredient 5-8wt%
String 25-50wt%
Wherein, described compounding ingredient comprises zinc oxide, sulphur, promoter, age resistor, stabilizing agent and dispersant, and content is respectively in 0.5-1.2wt%.
Described string is selected from one or both among the fiber of various cereal canes, sugarcane, bamboo, crudefiber crop or Woody plant, and best string is a lignocellulose plant fibre.
Described latex is selected from two or more among the compound group of being made up of butyronitrile latex, butadiene-styrene latex, neoprene latex and natural emulsion, preferably two or morely uses simultaneously, can use in one way separately in some cases but never get rid of.Silicate mineral inserts of the present invention is the mineral aggregate of conventional ingredient.More than each of sealing plate of the present invention form to divide that can obtain through the following manufacturing process that will introduce in detail can be 150 ℃ of temperature with interior use, have the swelling type sealing plate of the non-asbestos that the tensile strength than asbestos latex plate doubles.
In addition, described fibrous material also can be selected for use natural and synthetic fibers replace string, and constitutes another kind of sealing plate, and described sealing plate (B) the ratio of each component is as follows:
Natural and synthetic fibers 35-70wt%
Latex 7-15wt%
Silicate mineral inserts 8-18wt%
Compounding ingredient 4-5wt%
Here, described natural fiber is sepiolite fibre and wollastonite fibre, and their actual separately weight percent in above 35-75wt% are:
Sepiolite fibre 15-30wt%
Wollastonite fibre 15-30wt%
Develop dimension (the having another name called aramid fiber) 5-10wt% that tows
In sealing plate by natural and the non-asbestos that the alternative wood fibre of synthetic fibers is made, employed latex also is selected from two or more among four kinds of compound groups being made up of butyronitrile, butylbenzene, neoprene and natural emulsion, employed silicate mineral inserts also is the kind of conventional usefulness with compounding ingredient and inserts used in the sealing plate of the non-asbestos made from the wood fibre character the same with compounding ingredient is arranged, and is just slightly different on content.The swelling type sealing plate of this non-asbestos of being made up of natural and synthetic fibers can be 350 ℃ temperature with interior use, and other performance then all near the performance of the swelling type latex plate of asbestos, can be made the cylinder gasket that various internal combustion engines are used for this reason.
Can see from the composition of the swelling type sealing plate of above non-asbestos, in goods of the present invention, do not contain asbestos, can overcome fully produce and use in asbestos to the harm of health, in addition, select assurance with technology for use by asbestos alternative, improved the serviceability of product aspect different.
Fig. 1 is the process chart of the swelling type sealing plate (A) of non-asbestos of the present invention;
Fig. 2 is the process chart of the swelling type sealing plate (B) of another non-asbestos of the present invention;
More than among two figure, the basic condition of the code name that each is formed and the name title of each processing step is as follows:
Latex is 1, string 2, silicate mineral inserts 3, compounding ingredient 4, natural and synthetic fibers 5, aluminum sulfate 6, carbon black or phthalocyanine green 7.
The title of processing step, 11 for modification handle, 12 mix stir, 12a is rolling, the 13rd, sorting removal of impurities, 14 making beating, 15 surely slurry, 16 copy get, 17 peel off, 18 sulfurations, 19 checks and 20 dispatch from the factory.
As the concrete proportion of composing (weight percent) of the swelling type sealing plate (A) of the non-asbestos of the first embodiment of the present invention is as follows:
Wood materials 32%
Silicate mineral inserts 44%
Compounding ingredient 7%
The manufacturing process that sealing plate (A) adopts is: 32 kilograms lignocellulosic materials are placed in the water soaked 8 hours, with its rolling at a slow speed in 30 rev/mins of grinding mills, make that wood fibre loosely reaches that beating degree 75-80 degree is above, concentration of slurry is at 5-8% after the immersion.Then, the silicate mineral inserts that in wood fibre, adds 42 kilograms, through stirring, sorting and remove auxiliary work, then said mixture is handled with the aluminum sulfate of 1.0-5.0 kilogram, after above processing, just can add 17 kilograms of latexes (is said components and the ratio of aluminum sulfate is about 100: in mixture 1-5) to wood fibre and inserts, wherein latex is selected butyronitrile for use; butylbenzene and natural emulsion; ratio is 1: 1.2: 0.8 a mixture; above-mentioned compound is comprised that latex adds 7 kilograms compounding ingredient after stirring again and mixed through mixing, and this compounding ingredient comprises zinc oxide; sulphur; promoter; age resistor; stabilizing agent; dispersant etc.At this moment, for need be painted to product or the sealing plate of reinforcement in can add each component total amount 3%-5% carbon black or phthalocyanine green (being not counted in the former proportion of composing) in addition.After the abundant rolling of above composition is mixed form slurry, slurry is evenly distributed steadily surfs the Net, form l Water Paper, utilize mechanical means to make the l Water Paper dehydration, make the surface smoothing of paper, careful, tight, elimination wire mark simultaneously, improve the intensity of paper, when l Water Paper reaches certain thickness on format roll, slab is peeled off from format roll, and slab enters drying process after check thickness, length and width size and gel content wherein.Usually drying is carried out under 75-95 ℃, and the time is (also air dry in the sun, just the time is longer) more than 2 hours.At last, the slab of drying is carried out vulcanizing treatment, place it in temperature 120-150 ℃, pressure is sulfuration 10-15 minute on the vulcanizing press of 8-12MPa, thereby obtains the swelling type sealing plate of the non-asbestos of finished product.
Owing to adopt above-mentioned technology (high concentration of grinding speed, slurrying slowly with grind fast slurrying slowly ease up into base) that wood fibre and the anionic material of latex two class bands are evenly mixed, and after adding aluminum sulfate, obtain changing and balance, reach and respectively organize the slurry online condition on the asbestos paper machine successfully, and combination is in a disguised form upbraided on optimum ground as, and the test result of final product is as shown in table 1.
Table 1
The physical property of the swelling type sealing plate (A) of non-asbestos
| Project | Unit | The sealing plate of prior art | Sealing plate of the present invention | |
| Tensile strength (laterally) | ??MPa | ????≥6.9 | ????≥13.9 | |
| Compression property P=34.9MPa | Compression ratio | ??％ | ????12-25 | ????20±5 |
| Rebound degree | ??％ | ????≥30 | ????≥45 | |
| Stress relaxation | ??％ | ????≤35 | ????≤35 | |
| Density | ??g/cm 3 | ????1.4±0.1 | ????1.0-1.1 | |
| ??3 #150 ℃ of 5t of lubricating oil 1 | Thicken | ??％ | ????35-50 | ????35-50 |
| Weightening finish | ??％ | ????- | ????- | |
From last table as seen, the tensile strength of the swelling type sealing plate of above-mentioned non-asbestos reach 13.9MPa, than the latex plate tensile strength of asbestos up to nearly one times.For this reason, in use has little, the easy accessibility of distortion, in addition, the swelling type sealing plate of non-asbestos is not because of containing asbestos, its chloride ion content is extremely low, so it is the metal protection to the internal combustion engine of using sealing plate of the present invention, engine etc. can reduce significantly, nearly approximate or on the sealing plate cost a little less than the swelling type latex plate of asbestos.
Other embodiment represents with A-D, is listed among the table 2.
The proportion of composing (weight percent) of the swelling type sealing plate (B) of the non-asbestos of the second embodiment of the present invention is as follows:
Exploitation is towed and is tieed up 12%
Sepiolite fibre 28%
Wollastonite fibre 25%
Latex 15%
Silicate mineral inserts 15%
Compounding ingredient 5%
In the present embodiment; The manufacturing process of sealing plate B is to develop the dimension of towing except what wherein soak rolling, the exploitation of loosening through rolling tow dimension then mix with sepiolite and wollastonite fibre again mix stir, loosen and removal of impurities, baking temperature at 75-95 ℃, curing temperature is beyond 110-150 ℃, pressure 8.0-13.0MPa, and other operation is the same with first embodiment with step.
As seen from the table, the sealing plate of the non-asbestos of second embodiment is basic identical or approaching with the latex plate of asbestos on main performance, but non-asbestos seal plate hear resistance of the present invention is better than asbestos, can work under with interior temperature at 350 ℃, in addition, the also the same no corrosiveness that has metal with first embodiment.
For work in-process obtains better slab, when starching, can adopt the effluent sizing technique, the ratio of tensile strength is more than 1: 0.8 in length and breadth.
Other embodiment represents with E-D, is listed in the table 2.
Table 2 (wt% of unit)
Claims (10)
1. the swelling type sealing plate of non-asbestos contains latex, silicate mineral inserts, vulcanization aid and fibrous material, it is characterized in that described fibrous material is a string, and the proportioning of described sealing plate each component is as follows:
String 25-50wt%
Latex 10-18wt%
Silicate mineral inserts 25-50wt%
The described compounding ingredient of compounding ingredient 5-8wt% comprises zinc oxide, sulphur horizontal stroke, promoter, age resistor, stabilizing agent and dispersant.They separately content in 0.5-1.2wt%.
2. sealing plate according to claim 1 is characterized in that described string is selected from one or both among the fiber of various cereal, sugarcane, bamboo, fiber crops or Woody plant.
3. sealing plate according to claim 1 is characterized in that described string is the fiber of Woody plant.
4. sealing plate according to claim 3 is characterized in that described latex is selected from two or more in the component of being made up of butyronitrile latex, butadiene-styrene latex, neoprene latex and natural emulsion.
5. sealing plate according to claim 4 is characterized in that described compounding ingredient also comprises carbon black and phthalocyanine green.
6. sealing plate according to claim 1 is characterized in that described fibrous material is natural and synthetic fibers, and the proportioning of described sealing plate each component is as follows:
Natural and synthetic fibers 35-75wt%
Latex 8-15wt%
Silicate mineral inserts 8-18wt%
Compounding ingredient 4-5wt%
Described natural fiber is sepiolite fibre and wollastonite fibre, and described synthetic fibers are the exploitation dimension of towing, and their separately weight percent in above content are:
Sepiolite fibre 15-30wt%
Wollastonite fibre 15-30wt%
Exploitation is towed and is tieed up 5-10wt%
7. the manufacturing process of sealing plate according to claim 1 is characterized in that comprising and soaks the rolling fibrous material, and with the various ingredients mixed pulp, online is copied and got, dry, sulfuration.
Soaking rolling is that fibrous material immersion under water more than 8 hours or 8 hours, will be placed in the edge runner through the fiber of immersion then and carry out rolling with the speed less than 30 rev/mins;
Mixed pulp comprises earlier that the fiber with rolling is added to and fully mixes in the silicate mineral inserts and after their sortings, removal of impurities, adds latex and stirs, and adds compounding ingredient again and fully stir to form the pulpous state slurry;
Online is copied and got is in the online starching of asbestos paper machine and peel off after format roll makes it reach certain size, thickness and gel content with the above-mentioned pulpous state slurry that obtains;
Drying is in drying oven, and temperature 75-95 ℃, the time is 2 hours-4 hours;
Add and depress sulfuration, curing temperature 120-150 ℃, pressure 80-120 kilograms per centimeter
2Time 8-15 minute;
Wherein, described fibrous material is a lignocellulosic material.
8. sealing plate manufacturing process according to claim 7 is characterized in that in described mixed pulp adding the aluminum sulfate of 1-5% in the fiber of sorting, removal of impurities and silicate mineral inserts.
9. sealing plate manufacturing process according to claim 7 is characterized in that described fibrous material is natural and synthetic fibers; Natural fiber mainly is sepiolite fibre and wollastonite fibre, synthetic fibers are to develop the dimension of towing, wherein, exploitation is towed to tie up and is soaked rolling, then it is added in wollastonite and the sepiolite fibre and mixes, pulverize and removal of impurities, described baking temperature is at 75-95 ℃, curing temperature is at 110-150 ℃, pressure 80-130 kilogram/cm
2Time is 10-20 minute.
10. according to Claim 8 or 9 described sealing plate manufacturing process, it is characterized in that described starching adopts the effluent sizing technique, make in length and breadth that tensile strength reaches about 1: 0.8,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95107590 CN1074087C (en) | 1995-07-25 | 1995-07-25 | Non-asbestos expanding type sealing plate and method for making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95107590 CN1074087C (en) | 1995-07-25 | 1995-07-25 | Non-asbestos expanding type sealing plate and method for making same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1141230A true CN1141230A (en) | 1997-01-29 |
| CN1074087C CN1074087C (en) | 2001-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95107590 Expired - Fee Related CN1074087C (en) | 1995-07-25 | 1995-07-25 | Non-asbestos expanding type sealing plate and method for making same |
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| Country | Link |
|---|---|
| CN (1) | CN1074087C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318785C (en) * | 2002-12-30 | 2007-05-30 | 成都市天府垫片有限责任公司<Del/> | Asbestos-free oil-proof sealing board |
| CN102643458A (en) * | 2012-05-12 | 2012-08-22 | 蔡瑞琳 | Mixed latex with antianaphylaxis |
| CN102817272A (en) * | 2012-08-23 | 2012-12-12 | 南阳国宇密封发展有限公司 | Method for continuous production of high-volume asbestos-free latex isolating sheet |
| CN104262711A (en) * | 2014-10-11 | 2015-01-07 | 成都俊马密封制品有限公司 | Cationic particle high-performance seal material |
| CN104497375A (en) * | 2014-12-19 | 2015-04-08 | 成都俊马密封制品有限公司 | Temperature-resisting sealing material prepared from organic/inorganic commixed co-flocculated binding agent and preparation method of temperature-resisting sealing material |
| CN104231355B (en) * | 2014-10-11 | 2016-03-02 | 成都俊马密封制品有限公司 | A kind of preparation method of cationic microparticles high-performance sealed material |
| CN105713261A (en) * | 2016-03-11 | 2016-06-29 | 成都天府垫片科技有限公司 | High-stiffness hatschek-process sealing material and preparation technology |
| CN109369988A (en) * | 2018-10-30 | 2019-02-22 | 江苏赛尔密封科技有限公司 | A kind of high-pressure oil-resistant is without asbestos packing sheet and preparation method thereof |
| CN110041577A (en) * | 2019-04-29 | 2019-07-23 | 中广核研究院有限公司 | High-temperature and high-presure resistent asbestos insulation gasket seal material and preparation method |
| CN116041880A (en) * | 2023-03-20 | 2023-05-02 | 成都俊马密封科技股份有限公司 | Swelling type high-sealing gasket material and preparation method thereof |
-
1995
- 1995-07-25 CN CN 95107590 patent/CN1074087C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318785C (en) * | 2002-12-30 | 2007-05-30 | 成都市天府垫片有限责任公司<Del/> | Asbestos-free oil-proof sealing board |
| CN102643458A (en) * | 2012-05-12 | 2012-08-22 | 蔡瑞琳 | Mixed latex with antianaphylaxis |
| CN102817272A (en) * | 2012-08-23 | 2012-12-12 | 南阳国宇密封发展有限公司 | Method for continuous production of high-volume asbestos-free latex isolating sheet |
| CN102817272B (en) * | 2012-08-23 | 2015-01-07 | 南阳国宇密封发展有限公司 | Method for continuous production of high-volume asbestos-free latex isolating sheet |
| CN104262711A (en) * | 2014-10-11 | 2015-01-07 | 成都俊马密封制品有限公司 | Cationic particle high-performance seal material |
| CN104231355B (en) * | 2014-10-11 | 2016-03-02 | 成都俊马密封制品有限公司 | A kind of preparation method of cationic microparticles high-performance sealed material |
| CN104262711B (en) * | 2014-10-11 | 2016-06-08 | 成都俊马密封制品有限公司 | A kind of cationic microparticles high-performance sealed material |
| CN104497375A (en) * | 2014-12-19 | 2015-04-08 | 成都俊马密封制品有限公司 | Temperature-resisting sealing material prepared from organic/inorganic commixed co-flocculated binding agent and preparation method of temperature-resisting sealing material |
| CN105713261A (en) * | 2016-03-11 | 2016-06-29 | 成都天府垫片科技有限公司 | High-stiffness hatschek-process sealing material and preparation technology |
| CN109369988A (en) * | 2018-10-30 | 2019-02-22 | 江苏赛尔密封科技有限公司 | A kind of high-pressure oil-resistant is without asbestos packing sheet and preparation method thereof |
| CN110041577A (en) * | 2019-04-29 | 2019-07-23 | 中广核研究院有限公司 | High-temperature and high-presure resistent asbestos insulation gasket seal material and preparation method |
| CN116041880A (en) * | 2023-03-20 | 2023-05-02 | 成都俊马密封科技股份有限公司 | Swelling type high-sealing gasket material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1074087C (en) | 2001-10-31 |
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Granted publication date: 20011031 |