CN103709529A - RIIR/REPDM elastomer and preparation method thereof - Google Patents
RIIR/REPDM elastomer and preparation method thereof Download PDFInfo
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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
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
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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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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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
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- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L2207/04—Thermoplastic elastomer
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Abstract
The invention relates to recycled butyl rubber and a preparation method thereof and especially relates to an RIIR/REPDM elastomer and a preparation method thereof. The RIIR/REPDM elastomer comprises 100 parts of RIIR and REPDM as waterproof materials, 1-2 parts of sulfur, 0.9-2 parts of a promoter, 2.5-8 parts of a vulcanization activator and 0-20 parts of carbon black. RIIR and REPDM have good technical compatibility. Through use of REPDM in RIIR, good integrated performances are obtained and RIIR machining performances are improved. The RIIR and REPDM used simultaneously can adopt the same vulcanization system, have similar vulcanization rates and easily form a co-vulcanization material. The preparation method utilizes RIIR and REPDM to completely replace EPDM and IIR, reduces a waterproof material cost and improves adhesion of the waterproof material and a base. The RIIR/REPDM waterproof material obtained by the preparation method has excellent performances of ozone resistance, weatherability, low temperature resistance, chemical medium resistance and hot air ageing resistance.
Description
Technical field
The present invention relates to a kind of regenerated rubber and preparation method thereof, particularly relate to a kind of RIIR/REPDM elastomerics and preparation method thereof.
Background technology
Leakage of buildings is a large problem of puzzlement China building trade always.At present, China's building leakage rate is very high, and major cause is that water-proof material is of low grade, of poor quality, and fake products is prevailing.Therefore, very large in the demand of China's high performance water proof material, but because Cost Problems is difficult to high performance water-proof material to spread in building trade.In recent years along with the fast development of China's automobile industry, the feature such as the output of RIIR also strengthens thereupon, and it is heat-resisting, ageing-resistant, water-fast that RIIR has.For fear of the valuable rubber sources of waste, for the application of RIIR, become particularly important.It is strong that RIIR is applied to water-proof material Zhong Dui basic unit flexible cracking suitability, to base material can be for adopting cold construction, save energy, reduces environmental pollution.It is the excellent raw material of research water-proof material.
But itself processing characteristics of RIIR is poor, easy roll banding in mixed refining process process adds the similar REPDM of structure properties with it in RIIR, and the two is with there being good process compatibility, can improve the processing characteristics of RIIR.RIIR/REPDM water-proof material has weather-proof, heat-resisting air aging, resistance to ozone, resistant to chemical media, the excellent over-all properties such as water-fast, low temperature resistant, the preparation of RIIR/REPDM water-proof material, both reduce the cost of water-proof material, realized again the utilization of reclaimed rubber.And the introduction about RIIR/REPDM water-proof material this respect does not appear in the newspapers in document and patent.
Summary of the invention
The object of the present invention is to provide a kind of RIIR/REPDM elastomerics and preparation method thereof, the present invention adopts RIIR, REPDM all to replace EPDM, IIR, reduced the cost of water-proof material, improved the binding property of water-proof material and matrix, the RIIR/REPDM water-proof material that final research is made has the excellent properties such as resistance to ozone, weathering resistance, low temperature resistant, resistant to chemical media, heat-resisting air aging.
The object of the invention is to be achieved through the following technical solutions:
A RIIR/REPDM elastomerics, described elastomerics is comprised of the mass parts of following constituent: RIIR and REPDM are also 100 parts by total amount, 1～2 part of Sulfur, 0.9～2 part of promotor, 2.5～8 parts of vulcanization levellers, 0～20 part of carbon black.
A RIIR/REPDM elastomerics preparation method, its preparation process of described method is:
A. first RIIR is made it to mix with REPDM thin-pass in mill for several times, then add successively zinc oxide, stearic acid, mixingly add carbon black after evenly, after mixing, add promotor, finally add vulcanizing agent; By rubber unvulcanizate packing 10 times, mix lower afterwards, park 24 hours stand-by;
B. the film back mixing of parking 24 hours is descended to sheet again, stay with stand-by;
C. the back mixing glue in step b is put on vulcanizing press and is vulcanized, temperature is controlled at 160 ℃, during sulfuration, with rubber, without rotor vulkameter, measures t
10and t
90, M
land M
h; After time of arrival, take out cross-linked rubber, by its naturally cooling, obtain RIIR/REPDM elastomerics, for measuring mechanical property.
Advantage of the present invention and effect are:
1, a kind of RIIR/REPDM elastomerics of the present invention, this elastomerics can be used for waterproofing work aspect, and this water-proof material has the excellent properties such as resistance to ozone, weathering resistance, low temperature resistant, resistant to chemical media, heat-resisting air aging.
2, a kind of RIIR/REPDM elastomerics preparation method of the present invention is simple, and this elastomerics can be used as water-proof material, and this water-proof material is with low cost and improved the binding property between water-proof material and base material.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
A kind of RIIR/REPDM of the present invention elastomerics, is comprised of the mass parts of following constituent: RIIR and REPDM be 100 parts by total amount, 1～2 part of Sulfur, 0.9～2 part of promotor, 2.5～8 parts of vulcanization levellers, 0～20 part of carbon black.Its carbon black can be medium super abrasion furnace black (N220), high abrasion furnace black(HAF) (N330) or the fast extruding furnace black (N550) that Qingdao Kai Bote rubber and plastics auxiliaries company limited produces.N cyclohexyl 2 benzothiazole sulfenamide (CZ), ziram (BZ), zinc dibutyl dithiocarbamate (PZ), tetramethyl-thiuram disulfide (TMTD), benzothiazolyl mercaptan (M) or benzothiazyl disulfide (DM) that its vulcanization accelerator can be the production of Shijiazhuang City Mao Feng Chemical Co., Ltd. are used separately, or this two kinds of several promotor or this two or more being used in combination.Its vulcanization leveller be the stearic acid produced of the Shenyang three prosperous Chemical Co., Ltd.s of prestige, the zinc oxide that Huludao Zinc Industry Co., Ltd. produces both be combined with.
RIIR/REPDM elastomerics, its preparation process:
A. first RIIR is made it to mix with REPDM thin-pass in mill for several times, then add successively zinc oxide, stearic acid, mixingly add carbon black after evenly, after mixing, add promotor, finally add vulcanizing agent; By rubber unvulcanizate packing 10 times, mix lower afterwards, park 24 hours stand-by;
B. the film back mixing of parking 24 hours is descended to sheet again, stay with stand-by;
C. the back mixing glue in step b is put on vulcanizing press and is vulcanized, temperature is controlled at 160 ℃, during sulfuration, with rubber, without rotor vulkameter, measures t
10and t
90, M
land M
h(each embodiment test result is in Table 1); After time of arrival, take out cross-linked rubber, by its naturally cooling, obtain RIIR/REPDM elastomerics, for measuring mechanical property.
In experiment, opening rubber mixing machine used is that Huanqiu Machinery Co., Ltd., Qingdao produces, and model is XK-160; Rubber is that Taiwan high ferro Science and Technology Co., Ltd. produces without rotor vulkameter, and model is GT-M 2000-A; Vulcanizing press is that Huanqiu Machinery Co., Ltd., Qingdao produces, and model is XLB-DQ400 * 400 * 2E; Electronic tensile test machine is that Shenzhen Rui Geer Instrument Ltd. produces, and model is RGL-30A; Shao Er hardness is counted Yingkou Material Test Maching Factory and is produced, and model is XHS; Sheet-punching machine is that chemical machinery four factories in Shanghai produce, and model is CP-25.
Embodiment 1:
In the present embodiment, the vulcanization system of employing is that Sulfur, TMTD, DM form, and vulcanization leveller is that zinc oxide and stearic acid are used in conjunction with, specifically formula: RIIR90 part, 10 parts of REPDM, 1.5 parts of TMTD, 0.5 part of DM, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.
RIIR/REPDM elastomerics described in the present embodiment, its preparation process:
A. first RIIR is made it to mix with REPDM thin-pass in mill for several times, then add zinc oxide, stearic acid, after mixing, add promotor, finally add Sulfur; By rubber unvulcanizate packing 10 times, mix lower afterwards, park 24 hours stand-by;
B. the film back mixing of parking 24 hours is descended to sheet again, stay with stand-by;
C. the back mixing glue in step b is put on vulcanizing press and is vulcanized, temperature is controlled at 160 ℃, during sulfuration, with rubber, without rotor vulkameter, measures t
10and t
90, M
land M
h(each embodiment test result is in Table 1); After time of arrival, take out cross-linked rubber, by its naturally cooling, obtain RIIR/REPDM elastomerics, for measuring mechanical property.
RIIR/REPDM elastomerics described in the present embodiment, performance test is divided into tensile property test, by GB/T528-2009, is undertaken; Tear resistance test, is undertaken by GB/T529-2008; Shao Er hardness test, is undertaken by GB/T531.1-2008.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, specifically formula: RIIR90 part, 10 parts of REPDM, 1.5 parts of TMTD, 0.5 part of M, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 3:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, specifically formula: RIIR90 part, 10 parts of REPDM, 1.5 parts of BZ, 0.5 part of DM, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 4:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, specifically formula: RIIR90 part, 10 parts of REPDM, 1.5 parts of BZ, 0.5 part of M, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 5:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, specifically formula: RIIR90 part, 10 parts of REPDM, 1.5 parts of PZ, 0.5 part of DM, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 6:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, specifically formula: RIIR90 part, 10 parts of REPDM, PZ1.5 part, 0.5 part of M, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 7:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, specifically formula: RIIR90 part, 10 parts of REPDM, 0.5 part of PZ, 1 part of TMTD, 0.5 part of DM, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 8:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, specifically formula: RIIR90 part, 10 parts of REPDM, 0.5 part of PZ, 1 part of TMTD, 0.5 part of M, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 9:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, specifically formula: RIIR90 part, 10 parts of REPDM, 0.5 part of BZ, 1 part of TMTD, 0.5 part of DM, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 10:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, specifically formula: RIIR90 part, 10 parts of REPDM, 0.5 part of BZ, 1 part of TMTD, 0.5 part of M, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 11:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, the RIIR90 part of specifically filling a prescription, 10 parts of REPDM, 0.3 part of BZ, 0.2 part of PZ, 1 part of TMTD, 0.5 part of DM, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 12:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, specifically formula: RIIR90 part, 10 parts of REPDM, 0.3 part of BZ, 0.2 part of PZ, 1 part of TMTD, 0.5 part of M, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 13:
The difference of the present embodiment and embodiment 1 is, has changed the kind of promotor, specifically formula: RIIR90 part, 10 parts of REPDM, 0.5 part of BZ, 0.5 part of PZ, 0.5 part of TMTD, 0.3 part of M, 0.2 part of DM, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 14:
The difference of the present embodiment and embodiment 1 is, the vulcanization system that rubber unvulcanizate partly adopts is that Sulfur, PZ, DM form, and additionally adds N330, and sulfurationization promoting agent is also use of stearic acid and zinc oxide.Concrete formula: RIIR90 part, 10 parts of REPDM, 1.5 parts of PZ, 0.5 part of DM, 5 parts, zinc oxide, 3 parts of stearic acid, 5 parts of N330,1.5 parts of Sulfurs.
RIIR/REPDM elastomerics described in the present embodiment, its preparation process:
A. first RIIR is made it to mix with REPDM thin-pass in mill for several times, then add zinc oxide, stearic acid, after mixing, add promotor, finally add Sulfur; By rubber unvulcanizate packing 10 times, mix lower afterwards, park 24 hours stand-by;
B. the film back mixing of parking 24 hours is descended to sheet again, stay with stand-by;
C. the back mixing glue in step b is put on vulcanizing press and is vulcanized, temperature is controlled at 160 ℃, during sulfuration, with rubber, without rotor vulkameter, measures t
10and t
90, M
land M
h(each embodiment test result is in Table 1); After time of arrival, take out cross-linked rubber, by its naturally cooling, obtain RIIR/REPDM elastomerics, for measuring mechanical property.
RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 15:
The difference of the present embodiment and embodiment 14 is, only changes the quality of N330.Concrete formula: RIIR90 part, 10 parts of REPDM, 1.5 parts of PZ, 0.5 part of DM, 5 parts, zinc oxide, 3 parts of stearic acid, 10 parts of N330,1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 16:
The difference of the present embodiment and embodiment 14 is, only changes the quality of N330.Concrete formula: RIIR90 part, 10 parts of REPDM, 1.5 parts of PZ, 0.5 part of DM, 5 parts, zinc oxide, 3 parts of stearic acid, 15 parts of N330,1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 17:
The difference of the present embodiment and embodiment 14 is, only changes the quality of N330.Concrete formula: RIIR90 part, 10 parts of REPDM, 1.5 parts of PZ, 0.5 part of DM, 5 parts, zinc oxide, 3 parts of stearic acid, 20 parts of N330,1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 18:
The difference of the present embodiment and embodiment 1 is, changes RIIR and REPDM mass parts ratio, and the vulcanization system of employing is that Sulfur, TMTD, M form, and sulfurationization promoting agent is stearic acid and zinc oxide and uses.Concrete formula: 80 parts of RIIR, 20 parts of REPDM, 1.5 parts of TMTD, 0.5 part of M, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 19:
The difference of the present embodiment and embodiment 18 is, only changes RIIR and REPDM mass parts ratio.Concrete formula: 70 parts of RIIR, 30 parts of REPDM, 1.5 parts of TMTD, 0.5 part of M, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Embodiment 20:
The difference of the present embodiment and embodiment 18 is, only changes RIIR and REPDM mass parts ratio.Concrete formula: 60 parts of RIIR, 40 parts of REPDM, 1.5 parts of TMTD, 0.5 part of M, 5 parts, zinc oxide, 3 parts of stearic acid, 1.5 parts of Sulfurs.RIIR/REPDM elastomerics described in the present embodiment, its mechanical experimental results is shown in Table 2.
Each embodiment of table 1 vulcanizes data
| Test event | M H/(dN·m) | M L/(dN·m) | t 10/min | t 90/min |
| Embodiment 1 | 3 | 0 | 4:31 | 22:26 |
| Embodiment 2 | 2 | 0 | 3: 39 | 21:59 |
| Embodiment 3 | 2 | 0 | 3:22 | 32:51 |
| Embodiment 4 | 2 | 0 | 2:12 | 29:59 |
| Embodiment 5 | 3 | 0 | 2:33 | 32:38 |
| Embodiment 6 | 3 | 0 | 1:55 | 31:30 |
| Embodiment 7 | 3 | 0 | 3:31 | 26:38 |
| Embodiment 8 | 2 | 0 | 3:09 | 26:59 |
| Embodiment 9 | 3 | 0 | 3:30 | 22:38 |
| Embodiment 10 | 2 | 0 | 3:24 | 23:01 |
| Embodiment 11 | 2 | 0 | 1:55 | 15:46 |
| Embodiment 12 | 2 | 0 | 2:34 | 22:42 |
| Embodiment 13 | 3 | 0 | 3:16 | 26:21 |
| Embodiment 14 | 3 | 0 | 2:18 | 11;45 |
| Embodiment 15 | 4 | 1 | 2:09 | 10:10 |
| Embodiment 16 | 5 | 1 | 1:54 | 9:12 |
| Embodiment 17 | 5 | 1 | 1:32 | 8:21 |
| Embodiment 18 | 2 | 0 | 315 | 15:47 |
| Embodiment 19 | 2 | 0 | 0:41 | 10:43 |
| Embodiment 20 | 3 | 0 | 2:38 | 15:35 |
Each embodiment mechanical property of table 2
| Test event | Tensile strength/MPa | Elongation at break/% | Tear strength/KN/m | Hardness/degree |
| Embodiment 1 | 4.4 | 537 | 24 | 61 |
| Embodiment 2 | 5.0 | 575 | 24 | 60 |
| Embodiment 3 | 4.6 | 511 | 21 | 55 |
| Embodiment 4 | 4.4 | 583 | 23 | 53 |
| Embodiment 5 | 6.5 | 578 | 26 | 63 |
| Embodiment 6 | 5.8 | 493 | 25 | 62 |
| Embodiment 7 | 5.0 | 527 | 24 | 63 |
| Embodiment 8 | 4.5 | 508 | 25 | 60 |
| Embodiment 9 | 4.4 | 532 | 24 | 62 |
| Embodiment 10 | 4.8 | 540 | 26 | 61 |
| Embodiment 11 | 5.5 | 511 | 25 | 67 |
| Embodiment 12 | 4.7 | 513 | 25 | 60 |
| Embodiment 13 | 5.1 | 520 | 26 | 60 |
| Embodiment 14 | 8.1 | 359 | 20 | 61 |
| Embodiment 15 | 8.5 | 338 | 22 | 62 |
| Embodiment 16 | 8.7 | 366 | 21 | 64 |
| Embodiment 17 | 8.8 | 325 | 23 | 65 |
| Embodiment 18 | 4.9 | 412 | 28 | 64 |
| Embodiment 19 | 6.8 | 420 | 27 | 63 |
| Embodiment 20 | 6.6 | 387 | 28 | 62 |
Claims (2)
1. a RIIR/REPDM elastomerics, is characterized in that, described elastomerics is comprised of the mass parts of following constituent: RIIR and REPDM are also 100 parts by total amount, 1～2 part of Sulfur, 0.9～2 part of promotor, 2.5～8 parts of vulcanization levellers, 0～20 part of carbon black.
2. a RIIR/REPDM elastomerics preparation method, is characterized in that, its preparation process of described method is:
A. first RIIR is made it to mix with REPDM thin-pass in mill for several times, then add successively zinc oxide, stearic acid, mixingly add carbon black after evenly, after mixing, add promotor, finally add vulcanizing agent; By rubber unvulcanizate packing 10 times, mix lower afterwards, park 24 hours stand-by;
B. the film back mixing of parking 24 hours is descended to sheet again, stay with stand-by;
C. the back mixing glue in step b is put on vulcanizing press and is vulcanized, temperature is controlled at 160 ℃, during sulfuration, with rubber, without rotor vulkameter, measures t
10and t
90, M
land M
h; After time of arrival, take out cross-linked rubber, by its naturally cooling, obtain RIIR/REPDM elastomerics, for measuring mechanical property.
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| CN111117084A (en) * | 2020-01-13 | 2020-05-08 | 沈阳化工大学 | Preparation method of agricultural automobile butyl inner tube added with butyl rubber powder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111117084A (en) * | 2020-01-13 | 2020-05-08 | 沈阳化工大学 | Preparation method of agricultural automobile butyl inner tube added with butyl rubber powder |
| CN111117085A (en) * | 2020-01-15 | 2020-05-08 | 沈阳化工大学 | Truck inner tube raw material added with regenerated butyl rubber |
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| CN103709529B (en) | 2016-06-22 |
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