CN111533965A - Anti-blooming environment-friendly rubber formula for tires - Google Patents
Anti-blooming environment-friendly rubber formula for tires Download PDFInfo
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- CN111533965A CN111533965A CN202010495168.XA CN202010495168A CN111533965A CN 111533965 A CN111533965 A CN 111533965A CN 202010495168 A CN202010495168 A CN 202010495168A CN 111533965 A CN111533965 A CN 111533965A
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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
- C08L7/00—Compositions of natural rubber
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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
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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
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
-
- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a floating-frost-resistant environment-friendly rubber formula for tires, which comprises the following components in parts by mass: 70-99 parts of diene rubber, 1-30 parts of saturated rubber, 5-100 parts of reinforcing filler, 0-3 parts of protective wax, 0.5-10 parts of zinc oxide, 0.5-10 parts of stearic acid, 0.0-10 parts of anti-aging agent, 0.5-30 parts of processing oil, 0.5-10 parts of vulcanizing agent and 0.5-10 parts of vulcanization accelerator. In the formula of the frost-resistant environment-friendly rubber for the tire, the conventional common diene rubber is changed into the common diene rubber and saturated rubber which are used together, so that the using amount of protective wax is reduced, and the frost in the formula of the tire can be effectively improved on the premise of not influencing the service performance of the tire.
Description
Technical Field
The invention relates to the technical field of rubber products, in particular to a floating-frost-resistant environment-friendly rubber formula applied to tread rubber of a low-speed tire.
Background
The tire inevitably contacts with ozone in the air in daily use, ozone molecules can attack double bonds in diene rubber molecules in the tire to generate chemical reaction to cause bond breaking, so that expandable aging cracks appear in the tire, and the use value is lost early. To avoid ozone damage to rubber in tires, it is common in the art to add to the tire rubber composition an amount of protective wax that can continuously migrate to the rubber surface to form a dense wax film to protect the rubber against static ozone attack. The protective wax cannot achieve the protective effect when moving too slowly or too little, and the protective wax easily causes floating frost when moving too quickly, so that the surface of the tire is whitened, the appearance of the tire is influenced, the lasting protective effect of the tire is influenced, and the service performance and the service life of the tire are reduced. Thus, complaints from the customer of blooming or cracking are a problem that the tire manufacturer is urgently required to solve the problem.
The existing environment-friendly formula for the tire is used as follows: common diene rubber is used as a substrate, protective wax and an anti-aging agent are used together as an anti-aging system, and the common fault that frost is easy to float exists; therefore, it is necessary to provide an effective solution to the above problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a blooming-resistant environment-friendly rubber formula for a tire, which can effectively slow down a large amount of protective wax from floating and improve the protective timeliness of the protective wax.
In order to achieve the above purpose, the solution of the invention is:
the formula of the anti-blooming environment-friendly rubber for the tire comprises the following components in parts by mass: 70-99 parts of diene rubber, 1-30 parts of saturated rubber, 5-100 parts of reinforcing filler, 0-3 parts of protective wax, 0.5-10 parts of zinc oxide, 0.5-10 parts of stearic acid, 0.0-10 parts of anti-aging agent, 0.5-30 parts of processing oil, 0.5-10 parts of vulcanizing agent and 0.5-10 parts of vulcanization accelerator.
The diene rubber is any one or any combination of natural rubber, styrene-butadiene copolymer and polybutadiene rubber.
The saturated rubber is any one or the combination of ethylene propylene diene monomer and halogenated butyl rubber.
The reinforcing filler is any one or any combination of carbon black, white smoke, pottery clay, mica powder and active calcium carbonate.
After the structure is adopted, the main material used in the invention is the blend of common diene rubber and saturated rubber, the saturated rubber is non-polar rubber, the saturated rubber has higher aging resistance, chemical resistance, thermal stability, polar medium resistance and insulativity, the ozone resistance is excellent, the proper amount of the modified rubber is added in the formula, the aging problem does not exist, the dosage of the protective wax can be reduced, and the use performance and the appearance of the product can be considered at the same time; meanwhile, the saturated main chain structure has the characteristic of good compatibility with the protective wax, so that the floating of a large amount of protective wax can be effectively slowed down, and the protective timeliness of the protective wax is improved. In the formula of the frost-resistant environment-friendly rubber for the tire, the conventional common diene rubber is changed into the common diene rubber and saturated rubber which are used together, so that the using amount of protective wax is reduced, and the frost in the formula of the tire can be effectively improved on the premise of not influencing the service performance of the tire.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is illustrated by the following specific examples and comparative examples.
The invention discloses a floating-frost-resistant environment-friendly rubber formula for tires, which comprises the following components in parts by mass: 70-99 parts of diene rubber, 1-30 parts of saturated rubber, 5-100 parts of reinforcing filler, 0-3 parts of protective wax, 0.5-10 parts of zinc oxide, 0.5-10 parts of stearic acid, 0.0-10 parts of anti-aging agent, 0.5-30 parts of processing oil, 0.5-10 parts of vulcanizing agent and 0.5-10 parts of vulcanization accelerator.
The diene rubber is any one or any combination of natural rubber, styrene-butadiene copolymer and polybutadiene rubber, and can be used singly or in combination of 2 or more, and the molecular weight and microstructure are not limited. The dosage is controlled to be 70PHR-99PHR, and PHR is the percentage content of the additive in the rubber.
The saturated rubber is any one or two combinations of ethylene propylene diene monomer and halogenated butyl rubber, can be used independently or 2 combinations, and the molecular weight, microstructure and the like are not limited, and the dosage is preferably controlled to be 1PHR-30 PHR.
The reinforcing filler is any one or any combination of carbon black, white smoke, pottery clay, mica powder and active calcium carbonate, and the total dosage is 5PHR-100 PHR.
The protective wax is a protective wax commonly used in the rubber industry, and is not particularly limited.
The zinc oxide, stearic acid, an antioxidant, a processing oil, a vulcanizing agent and a vulcanization accelerator may be commercially available ones, and may be blended in the usual amounts without affecting the object of the present invention.
The specific formulations of the examples of the bloom resistant rubber formulation of the present invention and the comparative examples are shown in table 1:
table 1 shows the formulation of comparative example 1 and examples 1 to 11 of the present invention
Preparing a sizing material:
mixing the rubber, the filler, the zinc oxide, the stearic acid, the anti-aging agent, the protective wax and the processing oil in the formula table in an internal mixer for 5min to 155 ℃ and discharging; after cooling at room temperature, adding a vulcanizing agent and a vulcanization accelerator, and continuously mixing by using an open mill to obtain a rubber material for test comparison; then placing the mixture in a mold to vulcanize for 10min at 160 ℃ to obtain a vulcanized test piece.
Comparative evaluation
Appearance contrast
The resulting mixture was left standing in a constant temperature oven at 40 ℃ for 2 weeks and visually evaluated according to the following criteria:
| 1 minute (1) | Whitening the whole body |
| 2 is divided into | Area 3 becomes white |
| 3 points of | Overall color darkness |
| 4 is divided into | Area 3 becomes dim |
| 5 points of | Is not changed |
Tensile test
The tensile strength at break and the elongation at break of the test specimens were determined at room temperature in accordance with the GB/T528 standard. The results are expressed as relative indices, with larger numbers indicating better tensile properties.
Resistance to ozone cracking
The specimens were tested under the conditions of 40% elongation x 50pphm x 48h according to the GB/T7762 standard and evaluated visually according to the following criteria:
| 1 minute (1) | Cracking or breaking of cracks of 3mm or more |
| 2 is divided into | Cracks of more than 1mm and less than 3mm |
| 3 points of | Crack less than 1mm |
| 4 is divided into | 10 times magnifying glass visible |
| 5 points of | Not cracking |
Comparison of test results
The comparison of the above test results shows that:
(1) example-1 compared to comparative example-1, only reduced amounts of protective wax, change in formulation properties; the comparison of the test data results of the test item 'appearance blooming' shows that the blooming is slightly improved but the effect is not obvious only by reducing the dosage of the protective wax; the comparison of the test data results of the test items of 'strength at break and elongation at break' shows that the use amount of the protective wax is only reduced, and the tensile physical property is basically not influenced; the comparison of the test data results of the test item 'ozone resistance' shows that the ozone resistance is obviously reduced only by reducing the dosage of the protective wax; the improvement effect is not obvious only by reducing the dosage of the protective wax, and the ozone resistance is obviously weakened;
(2) compared with the comparative example-1, the examples-2, -3, -4, -5 and-6 keep the same dosage of the protective wax, increase the amount of the saturated rubber substituted diene rubber and change the performance of each formula; the comparison of the test data results of the test item 'appearance blooming' shows that the blooming is obviously improved along with the increase of the substitution amount of the saturated rubber; the comparison of the test data results of the test items 'breaking strength and breaking elongation' shows that the breaking strength and the breaking elongation tend to be reduced along with the increase of the substitution amount of the saturated rubber, which indicates that the tensile physical property is reduced, but the reduction range can still meet the use requirement of the product; the comparison of the test data results of the test item 'ozone resistance' shows that the ozone resistance of all formulas is approximately equivalent; the dosage of the protective wax is kept unchanged, and the effect of inhibiting the protective wax from being sprayed out quickly is achieved by adding a certain dosage of saturated rubber;
(3) example-7, example-8, example-9, example-10, example-11 and comparative example 1, the amount of the saturated rubber substituted diene rubber was increased, and the amount of the protective wax was reduced, and the change in the properties of the respective formulations was compared; compared with the test data results of the test item 'appearance blooming', the saturated rubber substitution amount is increased, the protective wax consumption is reduced, and the blooming improvement effect is obvious; the comparison of the test data results of the test items 'breaking strength and breaking elongation' shows that the substitution amount of saturated rubber is increased, the using amount of protective wax is reduced, and the breaking strength and the breaking elongation both have the tendency of being reduced, which indicates that the tensile physical property is reduced, but the reduction range can still meet the use requirement of the product; the comparison of the test data results of the test item 'ozone resistance' shows that the ozone resistance of all formulas is approximately equivalent; the amount of the saturated rubber substituted for the diene rubber is shown, the dosage of the protective wax is reduced, the blooming improvement effect is obvious, and the ozone resistance is not influenced;
from the results, the saturated rubber can effectively slow down a large amount of floating of the protective wax and improve the protective timeliness of the protective wax; the formula is added with 1-30 PHR saturated rubber, the dosage of protective wax is properly reduced, and the formula blooming can be effectively improved on the premise of less influence on the stretching performance and the ozone resistance, so that the technical scheme can give consideration to the use performance and the appearance of the product.
The above embodiments are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (4)
1. The formula of the anti-blooming environment-friendly rubber for the tire is characterized by comprising the following components in parts by mass: 70-99 parts of diene rubber, 1-30 parts of saturated rubber, 5-100 parts of reinforcing filler, 0-3 parts of protective wax, 0.5-10 parts of zinc oxide, 0.5-10 parts of stearic acid, 0.0-10 parts of anti-aging agent, 0.5-30 parts of processing oil, 0.5-10 parts of vulcanizing agent and 0.5-10 parts of vulcanization accelerator.
2. The blooming-resistant environment-friendly rubber formulation for tires as claimed in claim 1, wherein: the diene rubber is any one or any combination of natural rubber, styrene-butadiene copolymer and polybutadiene rubber.
3. The blooming-resistant environment-friendly rubber formulation for tires as claimed in claim 1, wherein: the saturated rubber is any one or the combination of ethylene propylene diene monomer and halogenated butyl rubber.
4. The blooming-resistant environment-friendly rubber formulation for tires as claimed in claim 1, wherein: the reinforcing filler is any one or any combination of carbon black, white smoke, pottery clay, mica powder and active calcium carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010495168.XA CN111533965A (en) | 2020-06-03 | 2020-06-03 | Anti-blooming environment-friendly rubber formula for tires |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010495168.XA CN111533965A (en) | 2020-06-03 | 2020-06-03 | Anti-blooming environment-friendly rubber formula for tires |
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| Publication Number | Publication Date |
|---|---|
| CN111533965A true CN111533965A (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010495168.XA Pending CN111533965A (en) | 2020-06-03 | 2020-06-03 | Anti-blooming environment-friendly rubber formula for tires |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002174A (en) * | 2010-11-17 | 2011-04-06 | 至和(福建）科技有限公司 | Styrene butadiene rubber (SBR) sponge composite material and preparation method thereof |
| CN102827404A (en) * | 2012-09-17 | 2012-12-19 | 上海众力汽车部件有限公司 | Anti-vibration rubber composition product for automobile |
| CN107619509A (en) * | 2016-07-14 | 2018-01-23 | 四川轮胎橡胶（集团）股份有限公司 | It is exclusively used in the tread mix of half steel ice and snow road special tyre |
| CN110483854A (en) * | 2019-07-26 | 2019-11-22 | 河北万达轮胎有限公司 | A kind of noctilucent tyre and its processing technology |
-
2020
- 2020-06-03 CN CN202010495168.XA patent/CN111533965A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002174A (en) * | 2010-11-17 | 2011-04-06 | 至和(福建）科技有限公司 | Styrene butadiene rubber (SBR) sponge composite material and preparation method thereof |
| CN102827404A (en) * | 2012-09-17 | 2012-12-19 | 上海众力汽车部件有限公司 | Anti-vibration rubber composition product for automobile |
| CN107619509A (en) * | 2016-07-14 | 2018-01-23 | 四川轮胎橡胶（集团）股份有限公司 | It is exclusively used in the tread mix of half steel ice and snow road special tyre |
| CN110483854A (en) * | 2019-07-26 | 2019-11-22 | 河北万达轮胎有限公司 | A kind of noctilucent tyre and its processing technology |
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Application publication date: 20200814 |