CN109651667B - Red clay modified rubber material and preparation method thereof - Google Patents
Red clay modified rubber material and preparation method thereof Download PDFInfo
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- CN109651667B CN109651667B CN201811588673.8A CN201811588673A CN109651667B CN 109651667 B CN109651667 B CN 109651667B CN 201811588673 A CN201811588673 A CN 201811588673A CN 109651667 B CN109651667 B CN 109651667B
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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
- C08L9/06—Copolymers with styrene
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention utilizes the characteristics of high strength, excellent stability and the like of the red-coating argil, realizes the strong combination of the red-coating argil and rubber through the improvement research on the formula design and the preparation process, and the prepared red-coating argil modified rubber material reserves the advantages of wear resistance, heat resistance and oil resistance of the original rubber and overcomes the defects of insufficient strength, low flame retardance and poor dispersion effect after blending. Meanwhile, the preparation process of the red-coating argil modified rubber material is simple, and the cost is saved conveniently.
Description
Technical Field
The invention relates to the technical field of rubber materials, in particular to a rubber material modified by red clay and a preparation method thereof.
Background
With the rapid development of the rubber industry, rubber products have played a role in carrying modern social and industrial operations. At present, rubber becomes an indispensable important material in many fields such as transportation, agriculture, forestry, water conservancy, civil engineering and construction, electrical communication, medical treatment and health. Compared with plastics, the rubber material can be added with a large amount of various compounding agents and can be compounded with various materials, so that various rubber products with different properties can be prepared. The available compounding agents of the rubber have various formulas and complexities.
Depending on the source and method of raw materials, rubbers can be divided into two broad classes, natural and synthetic. Natural rubber is mainly derived from hevea trees, while synthetic rubber is made by artificial synthesis. The synthetic rubbers are available in a wide variety of varieties including cis-butadiene rubber, chloroprene rubber, styrene-butadiene rubber, etc., and among them, styrene-butadiene rubber is the most productive. Styrene butadiene rubber, also known as a poly (ethylene-co-butadiene) copolymer, has most of its properties close to those of natural rubber, and some properties such as wear resistance, heat resistance and aging resistance, etc., are superior to those of natural rubber. However, pure styrene-butadiene rubber has disadvantages such as low strength, difficulty in adding compounding agents more than natural rubber, poor dispersibility of compounding agents in styrene-butadiene rubber, and the like. Therefore, the development of modified styrene butadiene rubber is a research hotspot in the rubber industry and is also a market demand.
Along with the improvement of the performance requirements of people on rubber materials, the single rubber material is difficult to meet the requirements, so the research on blending rubber is more and more focused. At present, there are reports in the literature that Natural Rubber (NR) is well compatible with styrene-butadiene rubber (SBR), and that cost is reduced by adding a certain amount of styrene-butadiene rubber to acrylonitrile-butadiene rubber (NBR) which is excellent in oil resistance, wear resistance and heat resistance, but expensive. However, the NR/SBR blend and the NBR/SBR blend still have insufficient strength and flame retardancy, and therefore, a reinforcing agent needs to be added. The addition of pottery clay into rubber has a great influence on the performance of rubber materials, the traditional pottery clay has poor reinforcing effect on the rubber, and the red-coating pottery clay has the characteristics of high modulus, high strength, good stability, proper thermal expansion coefficient and the like and is a good reinforcing agent. The prior art does not disclose the red kaolin modified rubber material.
Disclosure of Invention
The invention aims to solve the problem that the traditional argil has poor reinforcing effect on rubber materials, and provides a red-coating argil-modified rubber material with high strength and good flame retardance.
The invention also aims to provide a preparation method of the kaurerite-modified rubber material.
In order to realize the purpose of the invention, the invention adopts the technical scheme that:
the red clay modified rubber material comprises the following raw materials in parts by weight: 35-55 parts of powdered styrene-butadiene rubber, 25-45 parts of nitrile rubber, 10-15 parts of ABS resin, 1-3 parts of vulcanizing agent, 1.5-4 parts of accelerator, 1-4 parts of zinc oxide, 0.5-2 parts of stearic acid, 3-6 parts of trioctyl trimellitate, 1-3 parts of paraffin, 10-15 parts of carbon black, 2-4 parts of antioxidant and 30-40 parts of red clay.
Wherein, the composition of the red kaolin is as follows: MgO content 1.04%, Al2O3Content of (A) 16.93%, SiO2Content of (B) 68.23%, K22.92% of O, 2.61% of CaO, Fe2O3The content of (B) is 8.27%。
As a further improvement of the red kaolin modified rubber material, the red kaolin modified rubber material comprises the following raw materials in parts by weight: 40 parts of powdered styrene-butadiene rubber, 30 parts of nitrile rubber, 12 parts of ABS resin, 2 parts of vulcanizing agent, 2.5 parts of accelerator, 2 parts of zinc oxide, 1 part of stearic acid, 5 parts of trioctyl trimellitate, 2 parts of paraffin, 12 parts of carbon black, 3 parts of antioxidant and 35 parts of red clay.
As a further improvement of the red kaolin modified rubber material, the mesh number of the red kaolin is 100-200 meshes.
As a further improvement of the kaurel modified rubber material, the vulcanizing agent is a carbamate vulcanizing agent LH-420.
As a further improvement of the kaurel modified rubber material, the accelerator is one of an accelerator PZ, an accelerator ZDMC or an accelerator NA-22.
As a further improvement of the kaurel-modified rubber material, the carbon black is one of carbon black N330, carbon black N339, carbon black N550 or carbon black N880.
As a further improvement of the red kaempferia clay modified rubber material, the antioxidant is one of an antioxidant BLE-25, an antioxidant Irganox 1520 or an antioxidant Wingstay K.
A preparation method of a kaurerite-modified rubber material comprises the following steps: firstly, putting the powdered styrene-butadiene rubber, the nitrile rubber and the ABS resin into an internal mixer for mixing uniformly, then adding the red clay, the trioctyl trimellitate, the zinc oxide, the stearic acid and the paraffin for mixing, then adding the carbon black and the antioxidant for mixing continuously, discharging the rubber, taking out the rubber sheet, adding the vulcanizing agent and the accelerator for mixing and reacting, and obtaining the red clay modified rubber material.
As a further improvement of the preparation method, the mixing temperature of the internal mixer is 70-74 ℃, and the rotating speed is 40-50 r/min.
As a further improvement of the preparation method, the reaction temperature for adding the vulcanizing agent and the accelerant to mix is 125-130 ℃, and the reaction time is 3-5 min.
The invention has the beneficial effects that:
the invention utilizes the characteristics of high strength, excellent stability and the like of the red-coating argil, realizes the strong combination of the red-coating argil and rubber through the improvement research on the formula design and the preparation process, and the prepared red-coating argil modified rubber material reserves the advantages of wear resistance, heat resistance and oil resistance of the original rubber and overcomes the defects of insufficient strength, low flame retardance and poor dispersion effect after blending. Meanwhile, the preparation process of the red-coating argil modified rubber material is simple, and the cost is saved conveniently.
Detailed Description
The invention is illustrated below by means of specific embodiments:
example 1
The embodiment discloses a red clay modified rubber material which comprises the following raw materials in parts by weight: 40 parts of powdered styrene-butadiene rubber, 30 parts of nitrile rubber, 12 parts of ABS resin, 2 parts of vulcanizing agent, 2.5 parts of accelerator, 2 parts of zinc oxide, 1 part of stearic acid, 5 parts of trioctyl trimellitate, 2 parts of paraffin, 12 parts of carbon black, 3 parts of antioxidant and 35 parts of red clay.
Wherein, the composition of the red kaolin is as follows: MgO content 1.04%, Al2O3Content of (A) 16.93%, SiO2Content of (B) 68.23%, K22.92% of O, 2.61% of CaO, Fe2O3The content of (B) was 8.27%. According to the formula, the kaurel is prepared, and the particle size of particles is controlled to be 100-200 meshes.
Wherein the vulcanizing agent is carbamate vulcanizing agent LH-420; the accelerant is accelerant PZ; the carbon black is carbon black N550; the antioxidant is antioxidant BLE-25.
The preparation steps of the rubber material are as follows: firstly, putting the powdered styrene-butadiene rubber, the nitrile rubber and the ABS resin into an internal mixer for mixing uniformly, and then adding the red clay, the trioctyl trimellitate, the zinc oxide, the stearic acid and the paraffin for mixing at the mixing temperature of 72 ℃ and the rotating speed of 45 r/min. Adding carbon black and an antioxidant, continuously mixing, discharging rubber, taking out pieces, adding a vulcanizing agent and an accelerant, mixing and reacting at the reaction temperature of 128 ℃ for 4min to obtain the kaurel clay modified rubber material.
Example 2
The embodiment discloses a red clay modified rubber material which comprises the following raw materials in parts by weight: 45 parts of powdered styrene-butadiene rubber, 40 parts of nitrile rubber, 12 parts of ABS resin, 2 parts of vulcanizing agent, 2.5 parts of accelerator, 2 parts of zinc oxide, 1.4 parts of stearic acid, 5 parts of trioctyl trimellitate, 2.2 parts of paraffin, 12 parts of carbon black, 3.5 parts of antioxidant and 40 parts of kauri clay.
Wherein, the composition of the red kaolin is as follows: MgO content 1.04%, Al2O3Content of (A) 16.93%, SiO2Content of (B) 68.23%, K22.92% of O, 2.61% of CaO, Fe2O3The content of (B) was 8.27%. According to the formula, the kaurel is prepared, and the particle size of particles is controlled to be 100-200 meshes.
Wherein the vulcanizing agent is carbamate vulcanizing agent LH-420; the accelerator is an accelerator ZDMC; the carbon black is carbon black N330; the antioxidant is antioxidant Irganox 1520.
The preparation steps of the rubber material are as follows: firstly, putting the powdered styrene-butadiene rubber, the nitrile rubber and the ABS resin into an internal mixer for mixing uniformly, and then adding the red clay, the trioctyl trimellitate, the zinc oxide, the stearic acid and the paraffin for mixing at the mixing temperature of 72 ℃ and the rotating speed of 45 r/min. Adding carbon black and an antioxidant, continuously mixing, discharging rubber, taking out pieces, adding a vulcanizing agent and an accelerant, mixing and reacting at the reaction temperature of 128 ℃ for 4min to obtain the kaurel clay modified rubber material.
Comparative example 1
This example is different from example 1 only in that the kauri clay was changed to a commercially available modified clay, which was a wet clay soaked with an appropriate amount of ethanol and rinsed with deionized water, and had a mesh size of 100.
Comparative example 2
The present example is different from example 2 only in that the powdered styrene-butadiene rubber in the present example is 30 parts and the nitrile-butadiene rubber is 55 parts.
Comparison of product Performance testing
The products prepared in examples 1 and 2 and comparative examples 1 and 2 were compared with a conventional commercially available styrene-butadiene rubber product (a pure vulcanized rubber) by a performance test, and the results are shown in Table 1.
The above examples are given to make the technical solutions of the present invention more apparent to those skilled in the art. It should be noted that the above embodiments do not limit the protection scope of the present invention.
Claims (10)
1. The red clay modified rubber material is characterized by comprising the following raw materials in parts by weight: 35-55 parts of powdered styrene-butadiene rubber, 25-45 parts of nitrile rubber, 10-15 parts of ABS resin, 1-3 parts of vulcanizing agent, 1.5-4 parts of accelerator, 1-4 parts of zinc oxide, 0.5-2 parts of stearic acid, 3-6 parts of trioctyl trimellitate, 1-3 parts of paraffin, 10-15 parts of carbon black, 2-4 parts of antioxidant and 30-40 parts of red clay;
wherein, the composition of the red kaolin is as follows: MgO content 1.04%, Al2O3Content of (A) 16.93%, SiO2Content of (B) 68.23%, K22.92% of O, 2.61% of CaO, Fe2O3The content of (B) was 8.27%.
2. The kaurerite-modified rubber material as claimed in claim 1, which comprises the following raw materials in parts by weight: 40 parts of powdered styrene-butadiene rubber, 30 parts of nitrile rubber, 12 parts of ABS resin, 2 parts of vulcanizing agent, 2.5 parts of accelerator, 2 parts of zinc oxide, 1 part of stearic acid, 5 parts of trioctyl trimellitate, 2 parts of paraffin, 12 parts of carbon black, 3 parts of antioxidant and 35 parts of red clay.
3. The kaurerite-modified rubber material as claimed in claim 1, wherein the mesh number of the kaurerite is 100-200 mesh.
4. The kaurel-modified rubber material of claim 1, wherein the vulcanizing agent is a urethane vulcanizing agent LH-420.
5. The kaurerite-modified rubber material as claimed in claim 1, wherein the accelerator is one of accelerator PZ, accelerator ZDMC or accelerator NA-22.
6. The kauri-modified rubber material of claim 1, wherein the carbon black is one of carbon black N330, carbon black N339, carbon black N550 or carbon black N880.
7. The kaureclay-modified rubber material as claimed in claim 1, wherein the antioxidant is one of an antioxidant BLE-25, an antioxidant Irganox 1520 and an antioxidant Wingstay K.
8. A method for preparing a kaurerite-modified rubber material as claimed in any one of claims 1 to 7, which comprises the steps of: firstly, putting the powdered styrene-butadiene rubber, the nitrile rubber and the ABS resin into an internal mixer for mixing uniformly, then adding the red clay, the trioctyl trimellitate, the zinc oxide, the stearic acid and the paraffin for mixing, then adding the carbon black and the antioxidant for mixing continuously, discharging the rubber, taking out the rubber sheet, adding the vulcanizing agent and the accelerator for mixing and reacting, and obtaining the red clay modified rubber material.
9. The method for preparing Kaolinitum-modified rubber material according to claim 8, wherein the mixing temperature of the internal mixer is 70-74 ℃ and the rotation speed is 40-50 r/min.
10. The method for preparing Kaolinitum-modified rubber material as claimed in claim 8, wherein the reaction temperature for mixing with vulcanizing agent and accelerator is 125-130 ℃ and the reaction time is 3-5 min.
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| CN201811588673.8A CN109651667B (en) | 2018-12-25 | 2018-12-25 | Red clay modified rubber material and preparation method thereof |
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| CN201811588673.8A CN109651667B (en) | 2018-12-25 | 2018-12-25 | Red clay modified rubber material and preparation method thereof |
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| JP2012046220A (en) * | 2010-08-27 | 2012-03-08 | Tsuruya:Kk | Colored pottery product |
| CN104725884A (en) * | 2015-01-20 | 2015-06-24 | 东北林业大学 | Preparation method of terra cotta reinforced wood-plastic composite material |
| CN104761921A (en) * | 2015-04-28 | 2015-07-08 | 东北林业大学 | Flame retardant method for red clay strengthening polyethylene wood-plastic composites |
| CN107090106A (en) * | 2017-06-27 | 2017-08-25 | 合肥市老海新材料有限公司 | A kind of environmental protection flame retardant rubber floor covering and preparation method thereof |
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