CN104419022A - Modified low-resistance tire rubber compound and preparation method thereof - Google Patents
Modified low-resistance tire rubber compound and preparation method thereof Download PDFInfo
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- CN104419022A CN104419022A CN201310368821.6A CN201310368821A CN104419022A CN 104419022 A CN104419022 A CN 104419022A CN 201310368821 A CN201310368821 A CN 201310368821A CN 104419022 A CN104419022 A CN 104419022A
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
- B29B7/90—Fillers or reinforcements, e.g. fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/69—Polymers of conjugated dienes
- C08G18/698—Mixtures with compounds of group C08G18/40
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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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)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a modified low-resistance tire rubber compound and a preparation method thereof. The modified low-resistance tire rubber compound comprises, by weight, 50-60 parts of natural rubber SIR20, 5-6 parts of butadiene styrene rubber, 5-6 parts of chloroprene rubber, 8-10 parts of N234 carbon black, 7-8 parts of white carbon black, 1-2 parts of a silane coupling agent X50S, 2-3 parts of polyethylene glycol, 2-3 parts of toluene diisocyanate, 2-3 parts of a tin salt catalyst, 1-2 parts of hydroxy-terminated polybutadiene, 3-4 parts of a softening plasticizer aromatic oil, 2-3 parts of stearic acid, 3-4 parts of an antioxidant, 1-2 parts of tackifier 204 resin, 1-2 parts of a homogenizing agent UB4000, 1-2 parts of sulfur, 1-2 parts of a promoter TBBS and 0.3-0.5 parts of an anti-scorching agent CTP. The preparation method improves the compatibility between rubber and water-absorbent resin and improves the strength of the rubber compound. Carbon black is partially substituted by the white carbon black, so the rolling resistance of a tire is reduced, and oil consumption reduction, exhaust gas discharge reduction and environmental protection are achieved. The modified low-resistance tire rubber compound has the advantages of strong adhesion between laminated rubbers, good dispersion and good thermo-oxidative aging resistance.
Description
Technical field
The invention belongs to rubber tyre and manufacture field, be specifically related to a kind of modification low resistance tyre stock and preparation method thereof.
Background technology
Sizing material is processed by carbon black, natural rubber or the starting material such as synthetic rubber, additive mixing banburying.As the main processing object in tire production and carrier, the ratio of rubber shared by sizing material reaches about half usually, in order to make rubber, there is required characteristic, also must add the chemical substances such as such as reinforcer, tackiness agent, antiaging agent wherein, to change the physical properties such as intensity, plasticity, elasticity, wearing quality of rubber.All work in-process glue components on tire, as tyre surface, sidewall and filler in bead core etc., are all be Raw material processing with sizing material in follow-up manufacturing process.
Green tire is the strategic direction of global tire industry development, and a lot of country has higher requirement to tyre performance, and increasing country is fermenting or implementing tire tag regulation.As Japan just came into effect voluntary tire tag system from 2010, the U.S. just have passed the regulation comprising tire tag and specify before 6 years, and European Union, Korea S will rise November 1 from this year, implement property tire tag regulation by force, the world market share of green tire is by increase by more than 15% when the time comes.
Reduce tire drag from formula angle, will be optimized from aspects such as glue kind, strengthening agents.All steel tire tread glue generally adopts All Pure Nature glue or on a small quantity also with cis-butadiene cement, the heat-dissipating of this colloid system is very low, needs to adjust reinforcement system emphatically.Current use furnace treated black, although meet the requirements as wear resistancies such as N234, N115, heat-dissipating is very high, cannot meet low rolling resistance tyre requirement.There is many shortcomings in production and in using in current tyre stock formula: carbon black and small powder disperse uneven, with transition layer poor adhesion, easily occur bubble during laminating.
By hydrophilic material and elastomer alloy, form a kind of elasticity and the intensity with rubber, have in water-swelling, extruding situation can water conservation simultaneously, and reaching can commensurate structure change, and the functional materials application again with water-swelling is more and more extensive,
Can be used for the waterproof of vehicle rack container, precision instrument and food, weather-proof dressing etc.Find according to a large amount of practices and research, most blend polymer is incompatible or partially compatible.In fact, poyblend is all the mixture of multi-phase multi-component structure, there is the weak problem of phase interface produced performance different from Phase Morphology.Poyblend is often because of poor compatibility, and two interphase interfaces can be high, and interface binding power is low and cause degradation.Objectionable intermingling between blend component, then wettability and tackiness bad, but be not that consistency is the bigger the better, and suitable consistency should be had.
Therefore, how to improve the consistency of resin and rubber, make Be very effective, in moulding process, avoid bubble to occur, realizing the raising of tyre performance, is the technical problem to be solved in the present invention simultaneously.
Summary of the invention
The present invention is in order to solve the problem and defect, provide a kind of modification low resistance tyre stock and preparation method thereof, it is characterized in that, feed components is composed as follows by weight: natural gum SIR20 50-60 part, butadiene-styrene rubber 5-6 part, chloroprene rubber 5-6 part, N234 carbon black 8-10 part, White Carbon black 7-8 part, silane coupling agent X50S 1-2 part, polyoxyethylene glycol 2-3 part, tolylene diisocyanate 2-3 part, tin saline catalyst 2-3 part, hydroxy-terminated polybutadienes 1-2 part, softening softening agent aromatic hydrocarbon oil 3-4 part, stearic acid 2-3 part, anti-aging agent 3-4 part, tackifier 204 resin 1-2 part, leveler UB40001-2 part, sulphur 1-2 part, accelerator TBBS 1-2 part, anti-scorching agent CTP 0.3-0.5 part.
Above-mentioned a kind of modification low resistance tyre stock and preparation method thereof, is characterized in that, described tin saline catalyst be selected from tin protochloride, stannous octoate, tin laurate any one.
Above-mentioned a kind of modification low resistance tyre stock and preparation method thereof, is characterized in that, described anti-aging agent adopts anti-aging agent 6PPD: anti-aging agent RD: the mixture of protection wax=1:2:1.
The making method of above-mentioned a kind of modification low resistance tyre stock, it is characterized in that, described method comprises the steps:
(1) obtained amphipathic urethane: by polyoxyethylene glycol after 105-115 DEG C of vacuum hydro-extraction, add tolylene diisocyanate and tin saline catalyst, be slowly warming up to 70-80 DEG C, stir 15-20min, and then add hydroxy-terminated polybutadienes, be warming up to 100-120 DEG C of reaction 30-40min;
(2) rubber plastic steelmaking: first control rotor speed of banbury mixer 65 rpm, blast 6 kilograms/CM is fastened on upper top
3, mixing pressure is 20MPa, and mixing chambers temp is 35 DEG C, temperature of rotor is 35 DEG C, and dump temperature is 160 DEG C, then weighs natural gum SIR20, butadiene-styrene rubber and chloroprene rubber, utilize rotor turns to carry out natural rubber to plasticate 40 seconds in mixing room, cooling water of banbury mixer temperature 30 DEG C;
(3) reinforced pressure bolt refining: then start to feed in raw material in order, the amphipathic urethane pressure bolt putting forward bolt throwing N234 carbon black, White Carbon black, silane coupling agent X50S and step (1) obtained refines 75 seconds; Throw softening softening agent aromatic hydrocarbon oil, stearic acid, anti-aging agent, tackifier 204 resin and leveler protection wax after proposing bolt cleaning and press 70 seconds, sizing material temperature reaches 160 DEG C and draws off sizing material to 22 inches of mills;
(4) tread mix is made: the cooling sizing material that finally turns refining is to 110-95 DEG C, and add sulphur, accelerator TBBS and anti-scorching agent CTP on a mill until evenly mixing, bottom sheet is cooled to the making that room temperature completes tread rubber.
The beneficial effect of the invention:
The present invention adopts amphipathic urethane to improve the consistency between rubber and water-absorbing resin as expanding material, thus reduces the turnover rate of water-absorbing resin, and when hydro-expansive rubber reaches water suction balance, resin is not separated out substantially.Also improve the intensity of the rear elastomeric material of water suction simultaneously.Replace by the tyre surface weighting material carbon black white carbon black of conventional tire being given part, add a certain amount of silane coupling agent simultaneously and chemical modification is carried out to white carbon black, when not losing tire basic security performance, reduce the frictional coefficient of tire, thus the rolling resistance reducing tire plays the effect reducing oil consumption, reduce exhaust gas emission and environmental protection.Tackifier are the consistency of 204 resins and natural gum and butadiene-styrene rubber, improve the bond properties between layer glue.Leveler UB4000 adds, and improves the homogeneity of different varieties blend rubber, improves sizing material dispersed.Protection system adopts the synergy of antioxidant 4020, anti-aging agent RD and protection wax, stops or delay ageing of rubber reaction to proceed, simultaneously to thermo-oxidative ageing excellent.The tyre stock obtained can meet the requirement of engineering materials, has a extensive future.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
The present invention embodiment can realize listed by according to the form below
Natural gum SIR20 50-60 part, butadiene-styrene rubber 5-6 part, chloroprene rubber 5-6 part, N234 carbon black 8-10 part, White Carbon black 7-8 part, silane coupling agent X50S 1-2 part, polyoxyethylene glycol 2-3 part, tolylene diisocyanate 2-3 part, tin saline catalyst 2-3 part, hydroxy-terminated polybutadienes 1-2 part, softening softening agent aromatic hydrocarbon oil 3-4 part, stearic acid 2-3 part, anti-aging agent 3-4 part, tackifier 204 resin 1-2 part, leveler UB40001-2 part, sulphur 1-2 part, accelerator TBBS 1-2 part, anti-scorching agent CTP 0.3-0.5 part.
Above-mentioned a kind of modification low resistance tyre stock and preparation method thereof, is characterized in that, described tin saline catalyst be selected from tin protochloride, stannous octoate, tin laurate any one.
Above-mentioned a kind of modification low resistance tyre stock and preparation method thereof, is characterized in that, described anti-aging agent adopts anti-aging agent 6PPD: anti-aging agent RD: the mixture of protection wax=1:2:1.
| Sequence number | Component | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| 1 | Natural gum | 54.7 | 44.6 | 45.5 |
| 2 | Butadiene-styrene rubber | 5 | 6 | 5 |
| 3 | Chloroprene rubber | 5 | 5 | 6 |
| 4 | N234 carbon black | 8 | 9 | 10 |
| 5 | White carbon black | 7 | 8 | 7 |
| 6 | Silane coupling agent X50S | 1 | 2 | 1 |
| 7 | Polyoxyethylene glycol part | 2 | 3 | 2 |
| 8 | Tolylene diisocyanate | 2 | 3 | 2 |
| 9 | Tin saline catalyst | 2 | 2 | 3 |
| 10 | Hydroxy-terminated polybutadienes | 1 | 2 | 1 |
| 11 | Softening softening agent aromatic hydrocarbon oil | 3 | 4 | 3 |
| 12 | Stearic acid | 2 | 2 | 3 |
| 13 | Anti-aging agent | 3 | 4 | 3 |
| 14 | Tackifier 204 resin | 1 | 1 | 2 |
| 15 | Leveler UB4000 | 1 | 1 | 2 |
| 16 | Sulphur | 1 | 1.5 | 2 |
| 17 | Accelerator TBBS | 1 | 1.5 | 2 |
| 18 | Anti-scorching agent CTP | 0.3 | 0.4 | 0.5 |
Concrete preparation method comprises the steps:
(1) obtained amphipathic urethane: by polyoxyethylene glycol after 105-115 DEG C of vacuum hydro-extraction, add tolylene diisocyanate and tin saline catalyst, be slowly warming up to 70-80 DEG C, stir 15-20min, and then add hydroxy-terminated polybutadienes, be warming up to 100-120 DEG C of reaction 30-40min;
(2) rubber plastic steelmaking: first control rotor speed of banbury mixer 65 rpm, blast 6 kilograms/CM is fastened on upper top
3, mixing pressure is 20MPa, and mixing chambers temp is 35 DEG C, temperature of rotor is 35 DEG C, and dump temperature is 160 DEG C, then weighs natural gum SIR20, butadiene-styrene rubber and chloroprene rubber, utilize rotor turns to carry out natural rubber to plasticate 40 seconds in mixing room, cooling water of banbury mixer temperature 30 DEG C;
(3) reinforced pressure bolt refining: then start to feed in raw material in order, the amphipathic urethane pressure bolt putting forward bolt throwing N234 carbon black, White Carbon black, silane coupling agent X50S and step (1) obtained refines 75 seconds; Throw softening softening agent aromatic hydrocarbon oil, stearic acid, anti-aging agent, tackifier 204 resin and leveler protection wax after proposing bolt cleaning and press 70 seconds, sizing material temperature reaches 160 DEG C and draws off sizing material to 22 inches of mills;
(4) tread mix is made: the cooling sizing material that finally turns refining is to 110-95 DEG C, and add sulphur, accelerator TBBS and anti-scorching agent CTP on a mill until evenly mixing, bottom sheet is cooled to the making that room temperature completes tread rubber.
Above-mentioned a kind of modification low resistance tyre stock, is characterized in that, described anti-aging agent adopts anti-aging agent 6PPD: anti-aging agent RD: the mixture of protection wax=1:2:1.
The low rolling resistance tyre tread mix made as above-mentioned preparation method and common tread rubber do following performance comparison:
Claims (4)
1. modification low resistance tyre stock and preparation method thereof, it is characterized in that, feed components is composed as follows by weight: natural gum SIR20 50-60 part, butadiene-styrene rubber 5-6 part, chloroprene rubber 5-6 part, N234 carbon black 8-10 part, White Carbon black 7-8 part, silane coupling agent X50S 1-2 part, polyoxyethylene glycol 2-3 part, tolylene diisocyanate 2-3 part, tin saline catalyst 2-3 part, hydroxy-terminated polybutadienes 1-2 part, softening softening agent aromatic hydrocarbon oil 3-4 part, stearic acid 2-3 part, anti-aging agent 3-4 part, tackifier 204 resin 1-2 part, leveler UB40001-2 part, sulphur 1-2 part, accelerator TBBS 1-2 part, anti-scorching agent CTP 0.3-0.5 part.
2. want a kind of modification low resistance tyre stock described in 1 and preparation method thereof according to right, it is characterized in that, described tin saline catalyst be selected from tin protochloride, stannous octoate, tin laurate any one.
3. a kind of modification low resistance tyre stock and preparation method thereof according to claim 1, is characterized in that, described anti-aging agent adopts anti-aging agent 6PPD: anti-aging agent RD: the mixture of protection wax=1:2:1.
4. the making method of a kind of modification low resistance tyre stock according to claim 1, it is characterized in that, described method comprises the steps:
(1) obtained amphipathic urethane: by polyoxyethylene glycol after 105-115 DEG C of vacuum hydro-extraction, add tolylene diisocyanate and tin saline catalyst, be slowly warming up to 70-80 DEG C, stir 15-20min, and then add hydroxy-terminated polybutadienes, be warming up to 100-120 DEG C of reaction 30-40min;
(2) rubber plastic steelmaking: first control rotor speed of banbury mixer 65 rpm, blast 6 kilograms/CM is fastened on upper top
3, mixing pressure is 20MPa, and mixing chambers temp is 35 DEG C, temperature of rotor is 35 DEG C, and dump temperature is 160 DEG C, then weighs natural gum SIR20, butadiene-styrene rubber and chloroprene rubber, utilize rotor turns to carry out natural rubber to plasticate 40 seconds in mixing room, cooling water of banbury mixer temperature 30 DEG C;
(3) reinforced pressure bolt refining: then start to feed in raw material in order, the amphipathic urethane pressure bolt putting forward bolt throwing N234 carbon black, White Carbon black, silane coupling agent X50S and step (1) obtained refines 75 seconds; Throw softening softening agent aromatic hydrocarbon oil, stearic acid, anti-aging agent, tackifier 204 resin and leveler protection wax after proposing bolt cleaning and press 70 seconds, sizing material temperature reaches 160 DEG C and draws off sizing material to 22 inches of mills;
(4) tread mix is made: the cooling sizing material that finally turns refining is to 110-95 DEG C, and add sulphur, accelerator TBBS and anti-scorching agent CTP on a mill until evenly mixing, bottom sheet is cooled to the making that room temperature completes tread rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310368821.6A CN104419022A (en) | 2013-08-22 | 2013-08-22 | Modified low-resistance tire rubber compound and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310368821.6A CN104419022A (en) | 2013-08-22 | 2013-08-22 | Modified low-resistance tire rubber compound and preparation method thereof |
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| CN104419022A true CN104419022A (en) | 2015-03-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107082913A (en) * | 2017-05-26 | 2017-08-22 | 成都微熵科技有限公司 | A kind of hydrophobic titanium dioxide silicon modified rubber and preparation method |
| CN107163308A (en) * | 2017-05-23 | 2017-09-15 | 林玉萍 | A kind of preparation method of abrasive rubber tire |
| CN109608606A (en) * | 2018-11-01 | 2019-04-12 | 浙江禾欣科技有限公司 | A kind of preparation method for automobile-used polyurethane solid tyre of digging up mine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4285854A (en) * | 1979-06-20 | 1981-08-25 | The Yokohama Rubber Co., Ltd. | Elastomer tire filling material |
| CN102585147A (en) * | 2011-12-23 | 2012-07-18 | 山东东大一诺威聚氨酯有限公司 | Polyurethane elastic body composition for engineering equipment |
| WO2013041151A1 (en) * | 2010-12-23 | 2013-03-28 | Compagnie Generale Des Etablissements Michelin | Tyre the tread of which comprises a thermoplastic polyurethane block copolymer |
| CN103087366A (en) * | 2011-10-31 | 2013-05-08 | 中国石油化工股份有限公司 | High-compatibility water swelling rubber and preparation method thereof |
-
2013
- 2013-08-22 CN CN201310368821.6A patent/CN104419022A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4285854A (en) * | 1979-06-20 | 1981-08-25 | The Yokohama Rubber Co., Ltd. | Elastomer tire filling material |
| WO2013041151A1 (en) * | 2010-12-23 | 2013-03-28 | Compagnie Generale Des Etablissements Michelin | Tyre the tread of which comprises a thermoplastic polyurethane block copolymer |
| CN103087366A (en) * | 2011-10-31 | 2013-05-08 | 中国石油化工股份有限公司 | High-compatibility water swelling rubber and preparation method thereof |
| CN102585147A (en) * | 2011-12-23 | 2012-07-18 | 山东东大一诺威聚氨酯有限公司 | Polyurethane elastic body composition for engineering equipment |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107163308A (en) * | 2017-05-23 | 2017-09-15 | 林玉萍 | A kind of preparation method of abrasive rubber tire |
| CN107082913A (en) * | 2017-05-26 | 2017-08-22 | 成都微熵科技有限公司 | A kind of hydrophobic titanium dioxide silicon modified rubber and preparation method |
| CN107082913B (en) * | 2017-05-26 | 2019-06-14 | 成都微熵科技有限公司 | A kind of hydrophobic titanium dioxide silicon modified rubber and preparation method |
| CN109608606A (en) * | 2018-11-01 | 2019-04-12 | 浙江禾欣科技有限公司 | A kind of preparation method for automobile-used polyurethane solid tyre of digging up mine |
| CN109608606B (en) * | 2018-11-01 | 2021-01-12 | 浙江禾欣科技有限公司 | Preparation method of polyurethane solid tire for mining vehicle |
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Application publication date: 20150318 |