CN105482194A - Check valve sealing rubber resistant to low temperature and high temperature - Google Patents
Check valve sealing rubber resistant to low temperature and high temperature Download PDFInfo
- Publication number
- CN105482194A CN105482194A CN201511009096.9A CN201511009096A CN105482194A CN 105482194 A CN105482194 A CN 105482194A CN 201511009096 A CN201511009096 A CN 201511009096A CN 105482194 A CN105482194 A CN 105482194A
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses check valve sealing rubber resistant to low temperature and high temperature. Raw materials of a rubber material A in parts by weight comprise: 80-90 parts of nitrile rubber, 2-3 parts of sulfur, 3-5 parts of aluminum oxide, 30-40 parts of low structure medium super abrasion furnace black N219, 0.3-0.7 part of an antioxidant BLE, 0.3-1.1 parts of an antioxidant 4010NA, 5-8 parts of paraffin oil, 0.9-1.7 parts of a vulcanization accelerator P and 2-4 parts of dibutyl phthalate; and raw materials of a rubber material B in parts by weight comprise: 70-80 parts of ethylene propylene diene monomer (EPDM), 5-15 parts of p-polyphenylene, 4-7 parts of sulfur, 8-10 parts of zinc oxide, 40-60 parts of low structure semi-reinforcing furnace black N754, 10-12 parts of shallowly pumped oil MES, 0.2-0.5 part of a scorch retarder CTP, 0.3-0.8 part of an antioxidant BZ, 0.2-0.6 part of an antioxidant 4010NA, 0.6-1.3 parts of a vulcanization accelerator DIBS and 0.8-1.4 parts of a vulcanization accelerator 808. After the check valve sealing rubber resistant to low temperature and high temperature is adopted, leakproofness of a valve is guaranteed, the obtained rubber has good elasticity, peel strength of the rubber at high temperature is improved, and the valve can be used at low temperature, so that application range of the valve is expanded.
Description
Technical field
The present invention relates to a kind of low temperature resistant resistant to elevated temperatures check valve seal rubber.
Background technology
Valve plate is the function unit in fluid delivery system, there is cut-off, regulate, water conservancy diversion, prevent adverse current, voltage stabilizing, the functions such as shunting or overflow pressure relief, flexible sealing valve and hard sealed valve is divided into according to sealing means valve, wherein the sealing of flexible sealing valve adopts rubber to realize more, start between rubber and valve plate when fluid temperature (F.T.) reaches more than 120 degrees Celsius when deployed to peel off, long-time use affects the sealing property of valve, adopt paracril or polyparaphenylene as the sealing material of valve to improve some scheme in valve Applicable temperature prior art, although improve rubber heat resisting temperature like this, but be difficult to use at low temperatures.
Summary of the invention
The object of the invention is to solve prior art and improve rubber heat resisting temperature, but be difficult to the problem that uses at low temperatures.
The technical solution used in the present invention is: a kind of low temperature resistant resistant to elevated temperatures check valve seal rubber, comprises A, B two portions sizing material;
The raw material of A sizing material comprises by weight: 80-90 part paracril, 2-3 part Sulfur, 3-5 part aluminum oxide, 30-40 part low structure medium super abrasion furnace black N219,0.3-0.7 part antioxidant BLE, 0.3-1.1 part antioxidant 4010NA, 5-8 part paraffin oil, 0.9-1.7 part accelerator P, 2-4 part dibutyl phthalate;
The raw material of B sizing material comprises by weight: 70-80 part ethylene-propylene rubber(EPR) EPDM, 5-15 part polyparaphenylene, 4-7 part Sulfur, 8-10 part zinc oxide, the shallow oil pumping of 40-60 part low structure semi-reinforcing furnace black N754,10-12 part MES, 0.2-0.5 part anti-scorching agent CTP, 0.3-0.8 part antioxidant BZ, 0.2-0.6 part antioxidant 4010NA, 0.6-1.3 part accelerator DIBS, 0.8-1.4 part accelerator 808.
The preparation method of low temperature resistant resistant to elevated temperatures check valve seal rubber, comprises the following steps:
Step 1: paracril is put into Banbury mixer and plasticates, after plasticating at 120 DEG C 15 ~ 20 minutes, add aluminum oxide, antioxidant BLE and paraffin oil to plasticate at 140 DEG C 7-15 minute, the antioxidant 4010NA in low structure medium super abrasion furnace black N219, dibutyl phthalate and A sizing material raw material is added after being warming up to 130 DEG C afterwards, mixing 5-10 minute, cools 24-26 hour after discharge;
Step 2: to join after cooling in mill and after adding the Sulfur in accelerator P and A sizing material raw material thin-pass 5-7 all over obtaining A sizing material, processing temperature≤60 DEG C of mill;
Step 3: by A sizing material, polyparaphenylene, anti-scorching agent CTP, add Banbury mixer start discharge after mixing 15 ~ 20 minutes at 160 DEG C, cool 24-26 hour after discharge, wherein the add-on of anti-scorching agent CTP is 2/3 of anti-scorching agent CTP total amount;
Step 4: to join after cooling in Banbury mixer and the antioxidant 4010NA added in ethylene-propylene rubber(EPR) EPDM, zinc oxide, shallow oil pumping MES and B sizing material raw material at 150 DEG C mixing 10 ~ 15 minutes, add low structure semi-reinforcing furnace black N754 afterwards, mixing 5-12 minute, add afterwards after antioxidant BZ and remaining anti-scorching agent CTP mix 3-4 minute and start discharge, after discharge, cool 24-26 hour;
Step 5: to join after cooling in mill and after adding the Sulfur in accelerator DIBS, accelerator 808 and B sizing material raw material thin-pass 7-9 all over obtaining finished product sizing material, processing temperature≤70 DEG C of mill.
The invention has the beneficial effects as follows: after have employed the present invention, ensure the stopping property of valve, gained rubber has good elasticity, improves the stripping strength of at high temperature rubber, and valve can use at low temperatures, improves the scope of application of valve.
Embodiment
The present invention is described further below.
Sizing material embodiment 1:
The raw material of A sizing material comprises by weight: 80 parts of paracrils, 2 parts of Sulfurs, 3 parts of aluminum oxide, 30 parts low structure medium super abrasion furnace black N219,0.7 part of antioxidant BLE, 0.3 part of antioxidant 4010NA, 5 parts of paraffin oils, 0.9 part of accelerator P, 2 parts of dibutyl phthalates;
The raw material of B sizing material comprises by weight: 70 parts of ethylene-propylene rubber(EPR) EPDM, 15 parts of polyparaphenylene, 4 parts of Sulfurs, 8 parts of zinc oxide, 40 parts low structure semi-reinforcing furnace black N754,12 parts of shallow oil pumping MES, 0.5 part of anti-scorching agent CTP, 0.3 part of antioxidant BZ, 0.6 part of antioxidant 4010NA, 0.6 part of accelerator DIBS, 0.8 part of accelerator 808.
Sizing material embodiment 2:
The raw material of A sizing material comprises by weight: 90 parts of paracrils, 3 parts of Sulfurs, 5 parts of aluminum oxide, 40 parts low structure medium super abrasion furnace black N219,0.3 part of antioxidant BLE, 1.1 parts of antioxidant 4010NAs, 8 parts of paraffin oils, 1.7 parts of accelerator Ps, 4 parts of dibutyl phthalates;
The raw material of B sizing material comprises by weight: 80 parts of ethylene-propylene rubber(EPR) EPDM, 5 parts of polyparaphenylene, 7 parts of Sulfurs, 10 parts of zinc oxide, 60 parts low structure semi-reinforcing furnace black N754,10 parts of shallow oil pumping MES, 0.2 part of anti-scorching agent CTP, 0.8 part of antioxidant BZ, 0.2 part of antioxidant 4010NA, 1.3 parts of accelerator DIBSs, 1.4 parts of accelerator 808s.
Sizing material embodiment 3:
The raw material of A sizing material comprises by weight: 85 parts of paracrils, 3 parts of Sulfurs, 4 parts of aluminum oxide, 35 parts low structure medium super abrasion furnace black N219,0.5 part of antioxidant BLE, 0.8 part of antioxidant 4010NA, 6 parts of paraffin oils, 1.3 parts of accelerator Ps, 3 parts of dibutyl phthalates;
The raw material of B sizing material comprises by weight: 75 parts of ethylene-propylene rubber(EPR) EPDM, 10 parts of polyparaphenylene, 6 parts of Sulfurs, 9 parts of zinc oxide, 50 parts low structure semi-reinforcing furnace black N754,11 parts of shallow oil pumping MES, 0.4 part of anti-scorching agent CTP, 0.6 part of antioxidant BZ, 0.4 part of antioxidant 4010NA, 1.1 parts of accelerator DIBSs, 1.1 parts of accelerator 808s.
Embodiment of the method 1: after getting out sizing material according to sizing material embodiment 1, in the steps below:
Step 1: paracril is put into Banbury mixer and plasticates, after plasticating at 120 DEG C 15 minutes, add aluminum oxide, antioxidant BLE and paraffin oil to plasticate at 140 DEG C 7 minutes, the antioxidant 4010NA in low structure medium super abrasion furnace black N219, dibutyl phthalate and A sizing material raw material is added after being warming up to 130 DEG C afterwards, mixing 5 minutes, after discharge, cool 24 hours;
Step 2: to join after cooling in mill and after adding the Sulfur in accelerator P and A sizing material raw material, thin-pass can obtain A sizing material 5 times, processing temperature≤60 DEG C of mill;
Step 3: by A sizing material, polyparaphenylene, anti-scorching agent CTP, add Banbury mixer start discharge after mixing 15 minutes at 160 DEG C, cool 24 hours after discharge, wherein the add-on of anti-scorching agent CTP is 2/3 of anti-scorching agent CTP total amount;
Step 4: to join after cooling in Banbury mixer and the antioxidant 4010NA added in ethylene-propylene rubber(EPR) EPDM, zinc oxide, shallow oil pumping MES and B sizing material raw material at 150 DEG C mixing 15 minutes, add low structure semi-reinforcing furnace black N754 afterwards, mixing 12 minutes, add afterwards after antioxidant BZ and remaining anti-scorching agent CTP mix 4 minutes and start discharge, after discharge, cool 26 hours;
Step 5: to join after cooling in mill and after adding the Sulfur in accelerator DIBS, accelerator 808 and B sizing material raw material, thin-pass can obtain finished product sizing material 9 times, processing temperature≤70 DEG C of mill.
Embodiment of the method 2: after getting out sizing material according to sizing material embodiment 2, in the steps below:
Step 1: paracril is put into Banbury mixer and plasticates, after plasticating at 120 DEG C 20 minutes, add aluminum oxide, antioxidant BLE and paraffin oil to plasticate at 140 DEG C 15 minutes, the antioxidant 4010NA in low structure medium super abrasion furnace black N219, dibutyl phthalate and A sizing material raw material is added after being warming up to 130 DEG C afterwards, mixing 5-10 minute, cools 26 hours after discharge;
Step 2: to join after cooling in mill and after adding the Sulfur in accelerator P and A sizing material raw material, thin-pass can obtain A sizing material 6 times, processing temperature≤60 DEG C of mill;
Step 3: by A sizing material, polyparaphenylene, anti-scorching agent CTP, add Banbury mixer start discharge after mixing 20 minutes at 160 DEG C, cool 26 hours after discharge, wherein the add-on of anti-scorching agent CTP is 2/3 of anti-scorching agent CTP total amount;
Step 4: to join after cooling in Banbury mixer and the antioxidant 4010NA added in ethylene-propylene rubber(EPR) EPDM, zinc oxide, shallow oil pumping MES and B sizing material raw material at 150 DEG C mixing 10 minutes, add low structure semi-reinforcing furnace black N754 afterwards, mixing 5 minutes, add afterwards after antioxidant BZ and remaining anti-scorching agent CTP mix 3 minutes and start discharge, after discharge, cool 24 hours;
Step 5: to join after cooling in mill and after adding the Sulfur in accelerator DIBS, accelerator 808 and B sizing material raw material, thin-pass can obtain finished product sizing material 7 times, processing temperature≤70 DEG C of mill.
Embodiment of the method 3: after getting out sizing material according to sizing material embodiment 3, in the steps below:
Step 1: paracril is put into Banbury mixer and plasticates, after plasticating at 120 DEG C 17 minutes, add aluminum oxide, antioxidant BLE and paraffin oil to plasticate at 140 DEG C 11 minutes, the antioxidant 4010NA in low structure medium super abrasion furnace black N219, dibutyl phthalate and A sizing material raw material is added after being warming up to 130 DEG C afterwards, mixing 8 minutes, after discharge, cool 25 hours;
Step 2: to join after cooling in mill and after adding the Sulfur in accelerator P and A sizing material raw material, thin-pass can obtain A sizing material 6 times, processing temperature≤60 DEG C of mill;
Step 3: by A sizing material, polyparaphenylene, anti-scorching agent CTP, add Banbury mixer start discharge after mixing 18 minutes at 160 DEG C, cool 25 hours after discharge, wherein the add-on of anti-scorching agent CTP is 2/3 of anti-scorching agent CTP total amount;
Step 4: to join after cooling in Banbury mixer and the antioxidant 4010NA added in ethylene-propylene rubber(EPR) EPDM, zinc oxide, shallow oil pumping MES and B sizing material raw material at 150 DEG C mixing 7 minutes, add low structure semi-reinforcing furnace black N754 afterwards, mixing 9 minutes, add afterwards after antioxidant BZ and remaining anti-scorching agent CTP mix 4 minutes and start discharge, after discharge, cool 25 hours;
Step 5: to join after cooling in mill and after adding the Sulfur in accelerator DIBS, accelerator 808 and B sizing material raw material, thin-pass can obtain finished product sizing material 8 times, processing temperature≤70 DEG C of mill.
Rubber properties is as follows:
Applicable temperature scope :-35 DEG C---220 DEG C;
Tension test (at 150 DEG C 10 minutes): tensile strength: 21-23%, elongation rate of tensile failure: 520-535%, hardness: 80-87 continues you;
Hot air aging experiment (at 120 DEG C 80 hours) tensile strength velocity of variation: 13-15%, elongation rate of tensile failure changes: 27-30%, changes in hardness rate: 9-10%.
Those skilled in the art should know; protection scheme of the present invention is not limited only to the above embodiments; various permutation and combination and conversion can also be carried out on the basis of above-described embodiment; under the prerequisite without prejudice to spirit of the present invention, the various conversion that the present invention carries out all are dropped in protection scope of the present invention.
Claims (2)
1. a low temperature resistant resistant to elevated temperatures check valve seal rubber, is characterized in that comprising A, B two portions sizing material;
The raw material of A sizing material comprises by weight: 80-90 part paracril, 2-3 part Sulfur, 3-5 part aluminum oxide, 30-40 part low structure medium super abrasion furnace black N219,0.3-0.7 part antioxidant BLE, 0.3-1.1 part antioxidant 4010NA, 5-8 part paraffin oil, 0.9-1.7 part accelerator P, 2-4 part dibutyl phthalate;
The raw material of B sizing material comprises by weight: 70-80 part ethylene-propylene rubber(EPR) EPDM, 5-15 part polyparaphenylene, 4-7 part Sulfur, 8-10 part zinc oxide, the shallow oil pumping of 40-60 part low structure semi-reinforcing furnace black N754,10-12 part MES, 0.2-0.5 part anti-scorching agent CTP, 0.3-0.8 part antioxidant BZ, 0.2-0.6 part antioxidant 4010NA, 0.6-1.3 part accelerator DIBS, 0.8-1.4 part accelerator 808.
2. the preparation method of low temperature resistant resistant to elevated temperatures check valve seal rubber in claim 1, is characterized in that comprising the following steps:
Step 1: paracril is put into Banbury mixer and plasticates, after plasticating at 120 DEG C 15 ~ 20 minutes, add aluminum oxide, antioxidant BLE and paraffin oil to plasticate at 140 DEG C 7-15 minute, the antioxidant 4010NA in low structure medium super abrasion furnace black N219, dibutyl phthalate and A sizing material raw material is added after being warming up to 130 DEG C afterwards, mixing 5-10 minute, cools 24-26 hour after discharge;
Step 2: to join after cooling in mill and after adding the Sulfur in accelerator P and A sizing material raw material thin-pass 5-7 all over obtaining A sizing material, processing temperature≤60 DEG C of mill;
Step 3: by A sizing material, polyparaphenylene, anti-scorching agent CTP, add Banbury mixer start discharge after mixing 15 ~ 20 minutes at 160 DEG C, cool 24-26 hour after discharge, wherein the add-on of anti-scorching agent CTP is 2/3 of anti-scorching agent CTP total amount;
Step 4: to join after cooling in Banbury mixer and the antioxidant 4010NA added in ethylene-propylene rubber(EPR) EPDM, zinc oxide, shallow oil pumping MES and B sizing material raw material at 150 DEG C mixing 10 ~ 15 minutes, add low structure semi-reinforcing furnace black N754 afterwards, mixing 5-12 minute, add afterwards after antioxidant BZ and remaining anti-scorching agent CTP mix 3-4 minute and start discharge, after discharge, cool 24-26 hour;
Step 5: to join after cooling in mill and after adding the Sulfur in accelerator DIBS, accelerator 808 and B sizing material raw material thin-pass 7-9 all over obtaining finished product sizing material, processing temperature≤70 DEG C of mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511009096.9A CN105482194A (en) | 2015-12-30 | 2015-12-30 | Check valve sealing rubber resistant to low temperature and high temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511009096.9A CN105482194A (en) | 2015-12-30 | 2015-12-30 | Check valve sealing rubber resistant to low temperature and high temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105482194A true CN105482194A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511009096.9A Pending CN105482194A (en) | 2015-12-30 | 2015-12-30 | Check valve sealing rubber resistant to low temperature and high temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106700152A (en) * | 2016-12-30 | 2017-05-24 | 安徽京鸿密封件技术有限公司 | High-temperature resistant ceramic-rubber composite sealing part material |
| CN107189135A (en) * | 2017-07-18 | 2017-09-22 | 安徽三义和能源科技有限公司 | Low temperature resistant 45 DEG C a kind of NBR rubber and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100029811A1 (en) * | 2008-07-29 | 2010-02-04 | Fujikura Rubber Ltd. | Rubber composition and a sealing member using thereof |
| CN102260380A (en) * | 2011-07-07 | 2011-11-30 | 天津鹏翎胶管股份有限公司 | Nitrile rubber/ethylene-propylene-diene rubber used for ozone resistant and low temperature resistant sealing ring |
| CN102417631A (en) * | 2011-10-31 | 2012-04-18 | 铜陵新特阀门有限责任公司 | Rubber material for production of parallel gate valve end surface O-shaped sealing ring and preparation method thereof |
-
2015
- 2015-12-30 CN CN201511009096.9A patent/CN105482194A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100029811A1 (en) * | 2008-07-29 | 2010-02-04 | Fujikura Rubber Ltd. | Rubber composition and a sealing member using thereof |
| CN102260380A (en) * | 2011-07-07 | 2011-11-30 | 天津鹏翎胶管股份有限公司 | Nitrile rubber/ethylene-propylene-diene rubber used for ozone resistant and low temperature resistant sealing ring |
| CN102417631A (en) * | 2011-10-31 | 2012-04-18 | 铜陵新特阀门有限责任公司 | Rubber material for production of parallel gate valve end surface O-shaped sealing ring and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106700152A (en) * | 2016-12-30 | 2017-05-24 | 安徽京鸿密封件技术有限公司 | High-temperature resistant ceramic-rubber composite sealing part material |
| CN107189135A (en) * | 2017-07-18 | 2017-09-22 | 安徽三义和能源科技有限公司 | Low temperature resistant 45 DEG C a kind of NBR rubber and preparation method thereof |
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Application publication date: 20160413 |
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