CN111040267A - Alloy rubber and production process thereof - Google Patents
Alloy rubber and production process thereof Download PDFInfo
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- CN111040267A CN111040267A CN201911388349.6A CN201911388349A CN111040267A CN 111040267 A CN111040267 A CN 111040267A CN 201911388349 A CN201911388349 A CN 201911388349A CN 111040267 A CN111040267 A CN 111040267A
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C08K2201/011—Nanostructured additives
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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
- C08L2201/02—Flame or fire retardant/resistant
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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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Abstract
The invention relates to the field of rubber production, and provides alloy rubber and a production process thereof, which are used for improving the quality of rubber. The alloy rubber provided by the invention comprises 60-80 parts by mass of NBR and 20-40 parts by mass of PVC. The performances of oil resistance, wear resistance, aging resistance, ozone resistance, flame retardance and the like of the rubber are improved, and the extrusion processability can be better improved; especially, the product has fine texture and improves the quality of the product.
Description
Technical Field
The invention relates to the field of rubber production, in particular to alloy rubber and a production process thereof.
Background
The blend rubber prepared by blending NBR and PVC is the main rubber type of the existing rubber-plastic alloy rubber, wherein the NBR is the abbreviation of nitrile rubber, and the NBR is the abbreviation of polyvinyl chloride. The combination of NBR and PVC can greatly increase the plasticity of the technical product, and simultaneously, rubber-plastic alloy rubber synthesized by NBR and PVC has the ozone resistance of PVC and the oil resistance of NBR, so the rubber-plastic alloy rubber has very wide application, and is particularly applied to the fields of oil pipes and fuel oil pipe outer layer rubber, wire and cable sheaths, oil-resistant conveying belts, automobile sealing elements, rubber rollers and rubber rings, automobile mould pressing parts, microporous sponges, foaming heat insulation layers, automobile waterproof strips, boot bottoms, protective coatings and the like.
At present, two methods are mainly used for synthesizing rubber-plastic alloy rubber from NBR and PVC, one is emulsion coprecipitation method, and the other is mechanical blending method. However, the existing alloy rubber is yellow and brown in color and poor in flexibility, and how to improve the appearance of the rubber is a technical problem to be solved urgently.
Disclosure of Invention
The invention provides an alloy rubber and a production process thereof for solving the technical problem of improving the quality of rubber.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
an alloy rubber comprises, by mass, 60-80 parts of NBR and 20-40 parts of PVC.
The NBR and PVC materials are mixed to obtain the rubber which has the advantages of both the NBR and the PVC materials.
After the two materials are combined, the performances of oil resistance, wear resistance, aging resistance, ozone resistance, flame retardance and the like of the rubber are improved, and the extrusion processability can be better improved; especially, the product has fine texture and improves the quality of the product.
Preferably, the NBR is 70-80 parts by mass, and the PVC is 30-40 parts by mass.
Preferably, the NBR70 mass part and the PVC30 mass part.
Preferably, the NBR is nitrile-butadiene rubber with the acrylonitrile content of 28-41%.
Preferably, the particle size of the PVC powder is 15-50 μm. The quality of the alloy rubber can be effectively improved through the finer PVC powder and the NBR with certain characteristics.
Preferably, the zinc oxide coating further comprises 1-3 parts by mass of modified zinc oxide, and the preparation method of the modified zinc oxide comprises the following steps:
s31, taking 2-5 parts by mass of zinc nitrate, 1-3 parts by mass of sodium carbonate and 0.5-2 parts by mass of nano titanium dioxide;
s32, dispersing the nano titanium dioxide into 800-1200 parts by mass of deionized water to obtain a dispersion liquid, adjusting the temperature of the dispersion liquid to 60-90 ℃, adding zinc nitrate into the dispersion liquid, uniformly stirring, adding sodium carbonate, and stirring for 60-120 min to obtain mixed slurry;
s33, filtering and washing the mixed slurry, drying the obtained solid at 420-440 ℃ for 20-24 h, crushing, and performing ball milling to obtain the modified zinc oxide.
Preferably, the zinc nitrate is 4 parts by mass, the sodium carbonate is 2 parts by mass, and the nano titanium dioxide is 1 part by mass.
Preferably, the nano titanium dioxide is modified nano titanium dioxide, and the preparation method of the modified nano titanium dioxide comprises the following steps:
s41, taking 4-7 parts by mass of nano titanium dioxide, 8-12 parts by mass of 50% nitric acid and 0.5-1 part by mass of graphene;
s42, dispersing graphene into 15-25 parts by mass of deionized water to obtain a first mixed solution; adding nano titanium dioxide into 50% nitric acid to obtain a second mixed solution; mixing the first mixed solution and the second mixed solution, stirring for 10min, adding 25-35 parts by mass of ethanol, and stirring uniformly to obtain slurry;
s43, adding 2-5 parts by mass of polyethylene glycol into the slurry, fully stirring, and heating and distilling at 80-95 ℃ for 8 hours after fully stirring to obtain concentrated slurry;
s44, heating and reducing the concentrated slurry for 12 hours under the hydrogen condition, and controlling the temperature to be 450-500 ℃.
A process for preparing the alloy rubber includes
S10, placing the NBR and the PVC powder into an internal mixer for mixing, and mixing for 25-35 min to obtain a mixed material;
s20, placing the mixed materials in an open mill for mixing again, filtering after mixing is finished, and cooling to obtain the alloy rubber.
Compared with the prior art, the invention has the beneficial effects that: the performances of oil resistance, wear resistance, aging resistance, ozone resistance, flame retardance and the like of the rubber are improved, and the extrusion processability can be better improved; especially, the product has fine texture and improves the quality of the product.
Can be used for rubber products such as automobile fuel rubber tubes, high-pressure woven rubber tubes, rubber rollers and the like.
The reprocessing performance is greatly improved, and the operation is easier; the rubber roll prepared from the alloy rubber is more fine and smooth, good in grinding, aging-resistant, ozone-resistant, better in elasticity and better in flexibility.
Detailed Description
The following examples are further illustrative of the present invention and are not intended to be limiting thereof.
The NBR in the comparative examples and examples is a nitrile rubber type 230S manufactured by JSR corporation of Japan. The PVC is LG chemical H-65-degree PVC powder.
Example 1
The alloy rubber comprises 70 parts by mass of NBR and 30 parts by mass of PVC. The NBR is nitrile-butadiene rubber with the acrylonitrile content of 32-34%. The particle size of the PVC powder is 15-50 mu m.
The NBR and PVC materials are mixed to obtain the rubber which has the advantages of both the NBR and the PVC materials. After the two materials are combined, the oil resistance, wear resistance, aging resistance, ozone resistance, flame retardance and other properties of the material are improved, and the extrusion processability can be better improved; especially, the product has fine texture and improves the quality of the product. The quality of the alloy rubber can be effectively improved through the finer PVC powder and the NBR with certain characteristics.
In the embodiment, the alloy rubber is light yellow and white, and the colloid is fine and smooth, good in elasticity, good in wear resistance and good in flexibility.
Example 2
An alloy rubber comprises 60 parts by mass of NBR and 40 parts by mass of PVC. The NBR is nitrile-butadiene rubber with the acrylonitrile content of 34-35%. The particle size of the PVC powder is 15-50 mu m.
Example 3
An alloy rubber comprises 80 parts by mass of NBR and 20 parts by mass of PVC. The NBR is nitrile-butadiene rubber with medium acrylonitrile content. The particle size of the PVC powder is 15-50 mu m.
Example 4
The alloy rubber comprises 70 parts by mass of NBR and 30 parts by mass of PVC. The NBR is nitrile-butadiene rubber with the acrylonitrile content of 32-34%. The particle size of the PVC powder is 15-50 mu m.
The modified zinc oxide powder further comprises 2 parts by mass of modified zinc oxide, and the preparation method of the modified zinc oxide comprises the following steps:
s31, taking 4 parts by mass of zinc nitrate, 1.5 parts by mass of sodium carbonate and 1 part by mass of nano titanium dioxide;
s32, dispersing the nano titanium dioxide into 1000 parts by mass of deionized water to obtain a dispersion liquid, adjusting the temperature of the dispersion liquid to 80 ℃, adding zinc nitrate into the dispersion liquid, uniformly stirring, adding sodium carbonate, and stirring for 90min to obtain a mixed slurry;
s33, filtering and washing the mixed slurry, drying the obtained solid at 420-440 ℃ for 12h, crushing, and performing ball milling to obtain the modified zinc oxide.
The nano titanium dioxide is modified nano titanium dioxide, and the preparation method of the modified nano titanium dioxide comprises the following steps:
s41, taking 5 parts by mass of nano titanium dioxide, 10 parts by mass of 50% nitric acid and 1 part by mass of graphene;
s42, dispersing graphene into 20 parts by mass of deionized water to obtain a first mixed solution; adding nano titanium dioxide into 50% nitric acid to obtain a second mixed solution; mixing the first mixed solution and the second mixed solution, stirring for 10min, adding 30 parts by mass of ethanol, and stirring uniformly to obtain slurry;
s43, adding 3 parts by mass of polyethylene glycol into the slurry, fully stirring, and heating and distilling at 80-95 ℃ for 8 hours to obtain concentrated slurry;
s44, heating and reducing the concentrated slurry for 12 hours under the hydrogen condition, and controlling the temperature to be 450-500 ℃.
Example 5
The alloy rubber comprises 70 parts by mass of NBR and 30 parts by mass of PVC. The NBR is nitrile-butadiene rubber with the acrylonitrile content of 32-34%. The particle size of the PVC powder is 15-50 mu m.
The modified zinc oxide is prepared from 1-3 parts by mass of modified zinc oxide, and the preparation method comprises the following steps:
s31, taking 4 parts by mass of zinc nitrate, 1.5 parts by mass of sodium carbonate and 1 part by mass of nano titanium dioxide;
s32, dispersing the nano titanium dioxide into 1000 parts by mass of deionized water to obtain a dispersion liquid, adjusting the temperature of the dispersion liquid to 80 ℃, adding zinc nitrate into the dispersion liquid, uniformly stirring, adding sodium carbonate, and stirring for 90min to obtain a mixed slurry;
s33, filtering and washing the mixed slurry, drying the obtained solid at 420-440 ℃ for 12h, crushing, and performing ball milling to obtain the modified zinc oxide.
Example 6
The alloy rubber comprises 70 parts by mass of NBR and 30 parts by mass of PVC. The NBR is nitrile-butadiene rubber with the acrylonitrile content of 32-34%. The particle size of the PVC powder is 15-50 mu m.
The zinc oxide powder further comprises 3 parts by mass of modified zinc oxide, and the preparation method of the modified zinc oxide comprises the following steps:
s31, taking 2 parts by mass of zinc nitrate, 1 part by mass of sodium carbonate and 0.5 part by mass of nano titanium dioxide;
s32, dispersing the nano titanium dioxide into 800-1200 parts by mass of deionized water to obtain a dispersion liquid, adjusting the temperature of the dispersion liquid to 60-90 ℃, adding zinc nitrate into the dispersion liquid, uniformly stirring, adding sodium carbonate, and stirring for 60-120 min to obtain mixed slurry;
s33, filtering and washing the mixed slurry, drying the obtained solid at 420-440 ℃ for 20-24 h, crushing, and performing ball milling to obtain the modified zinc oxide.
The nano titanium dioxide is modified nano titanium dioxide, and the preparation method of the modified nano titanium dioxide comprises the following steps:
41. taking 4 parts by mass of nano titanium dioxide, 8 parts by mass of 50% nitric acid and 0.5 part by mass of graphene;
s42, dispersing graphene into 15 parts by mass of deionized water to obtain a first mixed solution; adding nano titanium dioxide into 50% nitric acid to obtain a second mixed solution; mixing the first mixed solution and the second mixed solution, stirring for 10min, adding 25 parts by mass of ethanol, and stirring uniformly to obtain slurry;
s43, adding 2 parts by mass of polyethylene glycol into the slurry, fully stirring, and heating and distilling at 80 ℃ for 8 hours after fully stirring to obtain concentrated slurry;
s44, heating and reducing the concentrated slurry for 12 hours under the hydrogen condition, and controlling the temperature to be 450-500 ℃.
Example 7
The alloy rubber comprises 70 parts by mass of NBR and 30 parts by mass of PVC. The NBR is nitrile-butadiene rubber with the acrylonitrile content of 32-34%. The particle size of the PVC powder is 15-50 mu m.
The modified zinc oxide powder further comprises 1 part by mass of modified zinc oxide, and the preparation method of the modified zinc oxide comprises the following steps:
s31, taking 5 parts by mass of zinc nitrate, 3 parts by mass of sodium carbonate and 2 parts by mass of nano titanium dioxide;
s32, dispersing nano titanium dioxide into 1200 parts by mass of deionized water to obtain a dispersion liquid, adjusting the temperature of the dispersion liquid to 90 ℃, adding zinc nitrate into the dispersion liquid, uniformly stirring, adding sodium carbonate, and stirring for 120min to obtain a mixed slurry;
s33, filtering and washing the mixed slurry, drying the obtained solid at 420-440 ℃ for 24h, crushing, and performing ball milling to obtain the modified zinc oxide.
The nano titanium dioxide is modified nano titanium dioxide, and the preparation method of the modified nano titanium dioxide comprises the following steps:
s41, taking 7 parts by mass of nano titanium dioxide, 12 parts by mass of 50% nitric acid and 1 part by mass of graphene;
s42, dispersing graphene into 25 parts by mass of deionized water to obtain a first mixed solution; adding nano titanium dioxide into 50% nitric acid to obtain a second mixed solution; mixing the first mixed solution and the second mixed solution, stirring for 10min, adding 35 parts by mass of ethanol, and stirring uniformly to obtain slurry;
s43, adding 5 parts by mass of polyethylene glycol into the slurry, fully stirring, and heating and distilling at 80-95 ℃ for 8 hours to obtain concentrated slurry;
s44, heating and reducing the concentrated slurry for 12 hours under the hydrogen condition, and controlling the temperature to be 450-500 ℃.
Example 8
A process for preparing the alloy rubber includes
S10, placing the NBR and the PVC powder into an internal mixer for mixing, and mixing for 25-35 min to obtain a mixed material;
s20, placing the mixed materials in an open mill for mixing again, filtering after mixing is finished, and cooling to obtain the alloy rubber.
Comparative example 1
The alloy rubber comprises 50 parts by mass of NBR and 50 parts by mass of PVC. The NBR is nitrile-butadiene rubber with medium acrylonitrile content. The particle size of the PVC powder is 15-50 mu m.
Comparative example 2
The alloy rubber comprises 90 parts by mass of NBR and 10 parts by mass of PVC. The NBR is nitrile-butadiene rubber with medium acrylonitrile content. The particle size of the PVC powder is 15-50 mu m.
Comparative example 3
The alloy rubber comprises 90 parts by mass of NBR and 10 parts by mass of PVC. The NBR is nitrile-butadiene rubber with acrylonitrile content of more than 42 percent. The particle size of the PVC powder is 15-50 mu m.
Examples of the experiments
The oil resistance of the alloy rubber is tested by referring to HG/T3037-2008, and the volume change rate of the alloy rubber is measured by soaking the alloy rubber in 3-type oxidized fuel oil at 40 ℃ for 70h in examples 1-8 and comparative examples 1-5.
From the table, the volume change rate of the examples 4 to 7 is lower than that of the examples 1 to 3 and lower than that of the comparative examples 1 to 5, and the fact that the oil resistance of the rubber can be effectively improved by adding the modified zinc oxide into the alloy rubber is shown.
The higher volume change rate of example 5 indicates that the oil resistance of the rubber can be further improved by the modified zinc oxide made of modified titanium dioxide.
The above detailed description is specific to possible embodiments of the present invention, and the above embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included in the present claims.
Claims (9)
1. The alloy rubber is characterized by comprising 60-80 parts by mass of NBR and 20-40 parts by mass of PVC.
2. The alloy rubber according to claim 1, wherein the NBR is 70 to 80 parts by mass, and the PVC is 30 to 40 parts by mass.
3. The alloy rubber according to claim 1, wherein the NBR70 mass part, PVC30 mass part.
4. The alloy rubber as claimed in claim 1, wherein the NBR is a nitrile rubber having an acrylonitrile content of 28 to 41%.
5. The alloy rubber according to claim 1, wherein the particle size of the PVC powder is 15-50 μm.
6. The alloy rubber according to claim 1, further comprising 1-3 parts by mass of modified zinc oxide, wherein the preparation method of the modified zinc oxide comprises the following steps:
s31, taking 2-5 parts by mass of zinc nitrate, 1-3 parts by mass of sodium carbonate and 0.5-2 parts by mass of nano titanium dioxide;
s32, dispersing the nano titanium dioxide into 800-1200 parts by mass of deionized water to obtain a dispersion liquid, adjusting the temperature of the dispersion liquid to 60-90 ℃, adding zinc nitrate into the dispersion liquid, uniformly stirring, adding sodium carbonate, and stirring for 60-120 min to obtain mixed slurry;
s33, filtering and washing the mixed slurry, drying the obtained solid at 420-440 ℃ for 20-24 h, crushing, and performing ball milling to obtain the modified zinc oxide.
7. The alloy rubber according to claim 7, wherein the alloy rubber comprises 4 parts by mass of zinc nitrate, 2 parts by mass of sodium carbonate and 1 part by mass of nano titanium dioxide.
8. The alloy rubber according to claim 7, wherein the nano titanium dioxide is modified nano titanium dioxide, and the preparation method of the modified nano titanium dioxide comprises the following steps:
s41, taking 4-7 parts by mass of nano titanium dioxide, 8-12 parts by mass of 50% nitric acid and 0.5-1 part by mass of graphene;
s42, dispersing graphene into 15-25 parts by mass of deionized water to obtain a first mixed solution; adding nano titanium dioxide into 50% nitric acid to obtain a second mixed solution; mixing the first mixed solution and the second mixed solution, stirring for 10min, adding 25-35 parts by mass of ethanol, and stirring uniformly to obtain slurry;
s43, adding 2-5 parts by mass of polyethylene glycol into the slurry, fully stirring, and heating and distilling at 80-95 ℃ for 8 hours after fully stirring to obtain concentrated slurry;
s44, heating and reducing the concentrated slurry for 12 hours under the hydrogen condition, and controlling the temperature to be 450-500 ℃.
9. A production process of alloy rubber is characterized by comprising the following steps:
s10, placing the NBR and the PVC powder into an internal mixer for mixing, and mixing for 25-35 min to obtain a mixed material;
s20, placing the mixed materials in an open mill for mixing again, filtering after mixing is finished, and cooling to obtain the alloy rubber.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103435869A (en) * | 2013-09-02 | 2013-12-11 | 沈阳化工大学 | Light-color NBR/PVC (nitrile butadiene rubber/poly vinyl chloride) oil-resistant rubber material with high acrylonitrile content |
| CN104803408A (en) * | 2015-04-02 | 2015-07-29 | 吴肖颜 | Method for preparing modified nano-zinc oxide |
| CN106824157A (en) * | 2017-02-22 | 2017-06-13 | 山东圣泉新材料股份有限公司 | A kind of modified composite titania material and preparation method thereof, application |
| CN108129713A (en) * | 2016-12-01 | 2018-06-08 | 江苏骆氏减震件有限公司 | Rubber-plastic alloy and preparation method, application is blended in NBR-PVC |
-
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- 2019-12-30 CN CN201911388349.6A patent/CN111040267A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103435869A (en) * | 2013-09-02 | 2013-12-11 | 沈阳化工大学 | Light-color NBR/PVC (nitrile butadiene rubber/poly vinyl chloride) oil-resistant rubber material with high acrylonitrile content |
| CN104803408A (en) * | 2015-04-02 | 2015-07-29 | 吴肖颜 | Method for preparing modified nano-zinc oxide |
| CN108129713A (en) * | 2016-12-01 | 2018-06-08 | 江苏骆氏减震件有限公司 | Rubber-plastic alloy and preparation method, application is blended in NBR-PVC |
| CN106824157A (en) * | 2017-02-22 | 2017-06-13 | 山东圣泉新材料股份有限公司 | A kind of modified composite titania material and preparation method thereof, application |
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