CN103805096A - Temperature-resistant polymer elastic leakproof adhesive for safety upgrade of automobile tires - Google Patents
Temperature-resistant polymer elastic leakproof adhesive for safety upgrade of automobile tires Download PDFInfo
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- CN103805096A CN103805096A CN201210443856.7A CN201210443856A CN103805096A CN 103805096 A CN103805096 A CN 103805096A CN 201210443856 A CN201210443856 A CN 201210443856A CN 103805096 A CN103805096 A CN 103805096A
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Abstract
The invention relates to a temperature-resistant polymer elastic leakproof adhesive for safety upgrade of automobile tires. The adhesive comprises, by weight, 40 to 60% of thermoplastic elastomer, 34 to 54% of a tackifier, 0 to 10% of a plasticizer, 0 to 1.5% of an antioxidant, 0 to 15% of a filler, 0 to 3% of a foaming agent and 0 to 1% of a cross-linking agent. The adhesive provided by the invention enables a common automobile tire to be upgraded to an automobile tire with high temperature resistance, low temperature resistance, bullet proofness, leakage proofness and pricking resistance.
Description
Technical field
The present invention relates to a kind of polymer leakage-proof glue, particularly relate to a kind of heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading.
Background technology
The automotive wheels that vehicle uses at present, has two types, and one has inner tube of a tyre automotive wheels, another kind of automobiles without inner tubes wheel, and what in institute's passenger vehicle, substantially all use at present is automobiles without inner tubes wheel, automobiles without inner tubes wheel is progressively promoted the use of in load-carrying vehicle national requirements.Automobiles without inner tubes wheel has good thermal diffusivity, flexibility, stopping property and ride comfort performance and inflates well advantages such as using length interval time, but when automobiles without inner tubes wheel tire is punctured by sharp object, because sharp object residues in automotive wheels carcass, the high pressure gas of automotive wheels tire is known from experience and is outwards leaked or blow out puncturing position; When sharp object pierces through doughnut and departs from doughnut, the high pressure gas in automobiles without inner tubes wheel leak rapidly, if automobile is blown out or leaked rapidly two kinds of situations in the process of running at high speed, motor-vehicle accident occur dangerous large, and car crash probability is high.
On the eighties in last century market, major technique is presented as the technological method in selfsealings liquid glue perfusion automotive wheels, just has at that time multiple self-sealing tire mending-leakage glue on market, is injected in automotive wheels tire.Along with the rotation of automotive wheels is evenly distributed in the internal surface of automotive wheels tire, in the time that automotive wheels tire is punctured by sharp object, cause automotive wheels to have a flat tire, self-sealing tire mending-leakage glue and airborne oxygen reaction and solidify, reach the object of automotive wheels tire leakproof.Its technological method shortcoming is, in liquid glue and air oxygen reaction form one deck scleroma brilliant its reduce the elasticity of automotive wheels tire, have a strong impact on various technical features and the life-span of automotive wheels tire, do not received by market.There is important breakthrough in this technical field of the nineties last century, found a kind of more advanced selfsealings glue, by solid-state to the polyisoprene rubber or butene rubber or the silicon rubber etc. that spray one deck 2-3mm in automotive wheels sticky jelly, the micro-gas leakage that solves automotive wheels tire with this kind of solid-state sticky jelly, the phenomenon of gas leakage while being punctured by sharp object.Adopt polyisoprene rubber or the solid-state sticky jelly such as butene rubber or silicon rubber, make shellproof, the leakproof of automotive wheels tire, the upgrade technique of resistance to bundle use and step further to real market, but there is many disadvantages and unfavorable factor: 1) because polyisoprene rubber, butene rubber, silicon rubber are all the important members in synthetic rubber, the very wide cost of material of range of application is high; 2) activity of this type of rubber, ageing resistance all cannot obtain substantial technological breakthrough, is difficult to prolonged application under the severe Working environment of automotive wheels; 3) the solid-state sticky jelly coating of the polyisoprene rubber in automotive wheels tire, butene rubber, silicon rubber, in high-speed running automobile, automotive wheels tire and ground friction, tire intensification is too high causes the coating in tire, under centrifugal action, local deformaton occurs, and affects the transient equilibrium of automotive wheels; 4) polyisoprene rubber, butene rubber, the silicone rubber material that adopt, cost and industrialized development all become the factor of restriction popularization.
Recent years, along with the fast development of petrochemical technology, various macromolecule resin class tackiness agents, synthetic rubber and rubber composite continue to bring out, the external polymer leakage-proof glue material of promoting has entered domestic market, due to the external import of conventional raw material, price is high, the limited product simplification that causes of supplying, cause this polymer leakage-proof glue material to come into the market to run into many difficulties, also hindered the industry development process of domestic this product simultaneously.
Therefore, found and release a kind of high temperature resistant, low temperature resistant, there is again the constructed performance of international high polymer elastic glue-leakage-resistant simultaneously, with low cost and can domesticly complete " the heatproof high molecule elasticity glue-leakage-resistant " of the purchasing of raw materials completely, become and really can make the march toward bottleneck problem of industrialization and marketability of doughnut upgrading.
Existing automotive wheels polymer leakage-proof glue aspect for upgrading, still has many defects.This series products is simple at first view, in fact very complicated, and the technical requirements of polymer leakage-proof glue is very high.Because it is the basic guarantee of vehicle operating safety, in use, automotive wheels tire need stand the test of working under the larger high low temperature temperature difference and long-time bearing pressure, to its transient equilibrium, run at high speed, the safety index requirement such as weather resistance is high especially.Polymer leakage-proof glue should be at the low temperature of-40 ° of C, vehicle high-speed when operation automotive wheels tire is punctured, is pierced through rear self-complementary and keep one's end up, vehicle is under high speed, the long-time travel situations of high temperature again, automotive wheels tire periphery envrionment temperature is during up to 120 ° of C left and right, after tire is punctured, pierces through, self-complementary and keep one's end up.Existing polymer leakage-proof glue be difficult to reach this require many due to polymer leakage-proof glue poor adhesive force and automotive wheels tire inner wall surface adhesion not firm, cause polymer leakage-proof glue-line to come off or the defect of off-clip, and be difficult to reach the undismayed function and efficacy of automotive wheels tire after upgrading.
In order to solve the problem of above-mentioned existence, the there's no one who doesn't or isn't hard thought of relevant manufacturer and institute is asked scheme solution, is found but have no for a long time applicable polymer leakage-proof glue always.Therefore how to found a kind of new heatproof high molecule elasticity glue-leakage-resistant, be used for solving automotive wheels tire upgrading Explosion-Proof, make it really can make the doughnut upgrading industrialization and marketability of marching toward, real one of the current important research and development problem that belongs to, also becomes current industry and is badly in need of improved target.
Because the defect that above-mentioned existing polymer leakage-proof glue exists, practical experience and the expertise of the inventor based on being engaged in this type of product design manufacture and enriching for many years, and the utilization of cooperation scientific principle, actively research and innovation in addition, to founding a kind of novel heatproof high molecule elasticity glue-leakage-resistant, can improve general existing polymer leakage-proof glue, make it have more practicality.Through constantly research, design, and after repeatedly studying sample and improving, finally create the present invention who has practical value.
Summary of the invention
Adopting heatproof high molecule elasticity glue-leakage-resistant to be sprayed at automotive wheels tire inner wall is the key problem in technology of automotive wheels upgrading: the one, and heatproof high molecule elasticity glue-leakage-resistant should have high elasticity, resistance to air loss, tensile strength; The 2nd, heatproof high molecule elasticity glue-leakage-resistant and automotive wheels tire inner wall surface have strong sticking power.Analyze some existing heatproof high molecule elasticity glue-leakage-resistants, some substantially meets key problem in technology " " requirement on functional performance, but in the requirement of failing to reach key problem in technology " two " aspect the sticking power on automotive wheels tire inner wall surface.Its reason is, the material of automotive wheels tire is vulcanized rubber, and surface is inertia, and most of materials and its are difficult for bonding, and the automotive wheels tire inner wall top coat after upgrading very easily separates with tire inner wall in Vehicle Driving Cycle process.Thereby automotive wheels tire leakproof, resistance to bundle function after weakening or forfeiture upgrading.Founding a kind of heatproof high molecule elasticity glue-leakage-resistant and both met key problem in technology " ", meet again key problem in technology " twos' " requirement, is exactly purpose of the present invention.
The object of the invention is to, overcome the defect that existing polymer leakage-proof glue exists, and provide a kind of high temperature resistant (being greater than 120 ° of C), low temperature resistant (lower than-40 ° of C), oil resistant, water-fast, and there is the heatproof high molecule elasticity glue-leakage-resistant of high elasticity, resistance to air loss, tensile strength.
Another object of the present invention is to, overcome the defect that existing polymer leakage-proof glue exists, heatproof high molecule elasticity glue-leakage-resistant (high-air-tightness, snappiness, high-tensile and high adhesive force) with excellent function passes through hot melting spraying technology, be sprayed at automotive wheels tire inner wall surface, formation is greater than the uniform coating that 3.5mm is thick, combines closely in coating and automotive wheels tire inner wall surface, cold formed after, form the highdensity flexible glue of a kind of polymer, there is superior elasticity and ductility.Be difficult for utilizing inner wall surface to depart from automotive wheels in high vehicle speeds process coating in mid-term.Can not change the transient equilibrium of automotive wheels, not increase the shock momentum in Vehicle Driving Cycle process.
A further object of the present invention is, overcomes the defect that existing polymer leakage-proof glue exists, and a kind of heatproof high molecule elasticity glue-leakage-resistant is provided, and by hot melting spraying technology, is sprayed at automotive wheels tire inner wall surface, forms and is greater than the uniform coating that 3.5mm is thick.When automotive wheels tire such as, by sharp object (spike thing, blade, glass cullet etc.) from automotive wheels tyre surface thrusts, the highdensity polymer flexible glue layer of tire inner wall, under the effect of automotive wheels internal gas pressure, close penetrator, penetrator is implemented automatically to glue and wrap up in sealing, reach the function that prevents gas leak in automotive wheels tire, improve vehicle driving safety.
A further object of the present invention is, overcomes the defect that existing polymer leakage-proof glue exists, and a kind of heatproof high molecule elasticity glue-leakage-resistant is provided, and by hot melting spraying technology, is sprayed at automotive wheels tire inner wall surface, forms and is greater than the uniform coating that 3.5mm is thick.When automotive wheels tire such as, by sharp object (spike thing, blade, glass cullet etc.) from automotive wheels tyre surface thrusts.Under snappiness, deep drawing quality and the high-tensile effect of heatproof high molecule elasticity leakproof glue-line, when penetrator is pulled out or when Automatic-falling, the moment resilience of heatproof high molecule elasticity glue-leakage-resistant is shunk, under gas pressure in automotive wheels, automatically close automotive wheels tire and poke place, the repaired filling of leak of automotive wheels tire, closed obstruction, reaches and prevents that the function of gas leak in automotive wheels tire from improving vehicle driving safety.
A further object of the present invention is, overcomes the defect that existing polymer leakage-proof glue exists, and a kind of heatproof high molecule elasticity glue-leakage-resistant is provided, and by hot melting spraying technology, is sprayed at automotive wheels tire inner wall surface, forms and is greater than the uniform coating that 3.5mm is thick.Can make automotive wheels within the scope of ° C-120 ° C of self-temperature-40, be not more than 8mm, length 10cm sharp object or steel nail pierce through in the situation of high vehicle speeds by diameter, automotive wheels tire can not lose heart; When sharp object or steel nail are in automotive wheels tire or while finding to be pulled out, the leak that heatproof high molecule elasticity leakproof glue-line forms on automotive wheels tire extracting sharp object or steel nail, can moment auto-mending filling under gas pressure.
An also object of the present invention is, overcomes the defect that existing polymer leakage-proof glue exists, and a kind of heatproof high molecule elasticity glue-leakage-resistant is provided, and by hot melting spraying technology, is sprayed at automotive wheels tire inner wall surface, forms and is greater than the uniform coating that 3.5mm is thick.For thickening the sulfuric horizon of automotive wheels tire, it is played to certain explosion-proof.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading proposing according to the present invention, wherein comprises following component and weight proportion: thermoplastic elastomer 40-60%; Tackifier 34-54%; Softening agent 0-10%; Antioxidant 0-1.5%; Weighting agent 0-15%; Whipping agent 0-3%; Linking agent 0-1%.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The aforesaid heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading, wherein said thermoplastic elastomer is preferable over high styrene rubber, poly-isoamyl two rubber.
The aforesaid heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading, wherein said tackifier are preferable over polymerized rosin, staybelite, poly-a-vinyl toluene resin.
The aforesaid heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading, wherein said antioxidant is preferable over antioxidant 264, RD, 4010.
The aforesaid heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading, wherein said softening agent is preferable over naphthenic oil, dimixo-octyl phthalate DIOP.
The aforesaid heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading, wherein said weighting agent is preferable over nano-calcium carbonate, carbon black.
The aforesaid heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading, wherein said whipping agent selects in foaming agent TSH.
The aforesaid heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading, wherein said linking agent is preferable over nano zine oxide, resol.
The present invention compared with prior art has obvious advantage and beneficial effect.By technique scheme, heatproof high molecule elasticity glue-leakage-resistant of the present invention can reach suitable technical progress and practicality, and has the extensive utility value in industry, and it at least has following advantages:
1, the present invention uses tackifier, viscosity during for reducing thermoplastic elastomer hot melt, improves by heat resisting temperature and the open assembly time of viscosity, cohesive strength, adjusting selfsealings hot-melt adhesive powder, improves operability and reduce costs.
2, the present invention has selected small proportion softening agent (tenderizer) <10%; For increasing heatproof high molecule elasticity glue-leakage-resistant ductility (and mobility), reduce hardness, improve elongation at break and it is high temperature resistant, low temperature resistant, make after heatproof high molecule elasticity glue-leakage-resistant hot melt, the glue-line spraying in doughnut, adapt to doughnut AC and zinc oxide, Zinic stearas mixture under high temperature, low-temperature condition and run up and do not depart from, and by sharp object with steel nail pierces through or bullet can selfsealings after puncturing.
3, the glue-line that the weighting agent that the present invention uses has hot melting spraying formation has resistance to elevated temperatures and persistence, has fire-retardant, rot-resistant effect simultaneously.
4, the whipping agent that the present invention uses has the hot melt adhesive layer of increasing leak resistance.
5, the linking agent that the present invention uses has the high temperature resistant and persistence that increases hot melt adhesive layer.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technique means of the present invention, and can be implemented according to the content of specification sheets, and for above and other object of the present invention, feature and advantage can be become apparent, especially exemplified by preferred embodiment, be described in detail as follows below.
Embodiment
In order further to set forth the present invention's technique means and effect for taking for reaching predetermined goal of the invention, below in conjunction with preferred embodiment, to a kind of heatproof high molecule elasticity glue-leakage-resistant function for vehicle tyre safety upgrading proposing according to the present invention, the processing method of embodiment, operation and step, feature and effect, be described in detail as follows.
Embodiment mono-
The proportioning of heatproof high molecule elasticity glue-leakage-resistant and component (take weight percent as standard): 48% thermoplastic elastomer, 43% tackifier, 3% softening agent, 1% antioxidant, 3% weighting agent, 1% whipping agent, 1% linking agent; Take thermoplastic elastomer: high styrene rubber 660g, poly-isoamyl two rubber 300g; Tackifier: poly-a-vinyl toluene resin 600g, polymerized rosin 260g; Softening agent: naphthenic oil 30g, dimixo-octyl phthalate (DIOP) 30g; Antioxidant 264,10g, antioxidant RD, 10g; Weighting agent: nano-calcium carbonate 60g; Whipping agent: TSH 20g; Linking agent: nano zine oxide 20g.
Embodiment bis-
The proportioning of heatproof high molecule elasticity glue-leakage-resistant and component (take weight percent as standard): 50% thermoplastic elastomer, 35.5% tackifier, 7% softening agent, 1% antioxidant, 4% weighting agent, 2% whipping agent, 0.5% linking agent; Take thermoplastic elastomer: high styrene rubber 800g, poly-isoamyl two rubber 200g; Tackifier: polymerized rosin 500g, staybelite 210g; Softening agent: naphthenic oil 100g, diisobutyl phthalate (DIOP) 40g; Antioxidant RD, 10g, antioxidant 4010,10g; Weighting agent: carbon black 20g, nano-calcium carbonate 60g; Foaming agent TSH 40g; Linking agent: nano zine oxide 5g, resol 5g.
Embodiment tri-
The proportioning of heatproof high molecule elasticity glue-leakage-resistant and component (take weight percent as standard): 45% thermoplastic elastomer, 40% tackifier, 5% softening agent, 1% antioxidant, 5% weighting agent, 3% whipping agent, 1% linking agent; Take thermoplastic elastomer: high styrene rubber 500g, poly-isoamyl two rubber 400g; Tackifier: polymerized rosin 300g, staybelite 300g, poly-a-vinyl toluene resin 200g; Softening agent: naphthenic oil 50g, dimixo-octyl phthalate (DIOP) 50g; Antioxidant 4010,10g, antioxidant 264,10g; Weighting agent: carbon black 50g, nano-calcium carbonate 50g; Whipping agent: TSH 60g; Linking agent: nano zine oxide 10g, resol 10g.
The synthetic order of the heatproof high molecule elasticity glue-leakage-resistant that the present invention proposes is: utilize crushing material equipment, solid substances is ground into <150 order particle; Utilize continous way mixing equipment that solid substances and liquid material after pulverizing are evenly mixed, mix rear metering pack.
After the heatproof high molecule elasticity glue-leakage-resistant hot melt that the present invention proposes, the technical indicator of spraying formation glue-line is as follows: the mean value of melting viscosity is 5000-15000 li; The mean value of softening temperature is 70-130 degree; Temperature range is-40 to 120 degree.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solution of the present invention content, according to technical spirit of the present invention, any simple modification that above embodiment is done, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. for a heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading, it is characterized in that comprising following component and weight proportion:
Thermoplastic elastomer: 40-60%;
Tackifier: 34-54%;
Softening agent: 0-10%;
Antioxidant: 0-1.5%;
Weighting agent: 0-15%;
Whipping agent: 0-3%;
Linking agent: 0-1%.
2. the heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading according to claim 1, is characterized in that wherein said thermoplastic elastomer: be preferable over high styrene rubber, poly-isoamyl two rubber.
3. the heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading according to claim 1, is characterized in that wherein said tackifier: be preferable over polymerized rosin, staybelite, poly-a-vinyl toluene resin.
4. the heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading according to claim 1, is characterized in that wherein said antioxidant: be preferable over antioxidant 264, RD, 4010.
5. the heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading according to claim 1, is characterized in that wherein said softening agent: be preferable over naphthenic oil, dimixo-octyl phthalate DIOP.
6. the heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading according to claim 1, is characterized in that wherein said weighting agent: be preferable over nano-calcium carbonate, carbon black.
7. the heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading according to claim 1, is characterized in that wherein said whipping agent: select in foaming agent TSH.
8. the heatproof high molecule elasticity glue-leakage-resistant for vehicle tyre safety upgrading according to claim 1, is characterized in that wherein said linking agent: be preferable over nano zine oxide, resol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210443856.7A CN103805096A (en) | 2012-11-08 | 2012-11-08 | Temperature-resistant polymer elastic leakproof adhesive for safety upgrade of automobile tires |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210443856.7A CN103805096A (en) | 2012-11-08 | 2012-11-08 | Temperature-resistant polymer elastic leakproof adhesive for safety upgrade of automobile tires |
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| CN103805096A true CN103805096A (en) | 2014-05-21 |
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| CN201210443856.7A Pending CN103805096A (en) | 2012-11-08 | 2012-11-08 | Temperature-resistant polymer elastic leakproof adhesive for safety upgrade of automobile tires |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105349063A (en) * | 2015-12-03 | 2016-02-24 | 杭州汉高新材料科技有限公司 | Automobile hot-melt foaming pressure-sensitive adhesive and preparation method thereof |
| CN106047176A (en) * | 2016-05-23 | 2016-10-26 | 冯智勇 | Novel tire sealing composite material containing RA-60 tackifying resin |
| CN106085239A (en) * | 2016-05-23 | 2016-11-09 | 冯智勇 | Include the tire seal composite material of BRTR tackifying resin |
| CN106085022A (en) * | 2016-05-23 | 2016-11-09 | 冯智勇 | A kind of tire seal new material being made up of high molecular polymer |
| CN109130699A (en) * | 2018-09-06 | 2019-01-04 | 郝玉花 | Automotive wheel heatproof upgrading process method |
| CN110157320A (en) * | 2019-05-31 | 2019-08-23 | 上海明辛纳米科技有限公司 | A kind of tire nano repairing liquid with self-repair function |
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| CN100999179A (en) * | 2007-01-12 | 2007-07-18 | 张海龙 | Pricking resistant, bullet-proof, leakage-proof safety tyre, its manufacturing method and its used polymer leakage-proof mending material |
| US20090159165A1 (en) * | 2007-12-20 | 2009-06-25 | Herberger Sr James Robert | Tire tread composite and retreaded rubber tire |
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| CN1687282A (en) * | 2005-04-01 | 2005-10-26 | 广州慧达精细化工有限公司 | Hot-melt adhesive possible to be coated at low temperature |
| CN100999179A (en) * | 2007-01-12 | 2007-07-18 | 张海龙 | Pricking resistant, bullet-proof, leakage-proof safety tyre, its manufacturing method and its used polymer leakage-proof mending material |
| US20090159165A1 (en) * | 2007-12-20 | 2009-06-25 | Herberger Sr James Robert | Tire tread composite and retreaded rubber tire |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105349063A (en) * | 2015-12-03 | 2016-02-24 | 杭州汉高新材料科技有限公司 | Automobile hot-melt foaming pressure-sensitive adhesive and preparation method thereof |
| CN105349063B (en) * | 2015-12-03 | 2017-08-04 | 杭州汉高新材料科技有限公司 | Automobile hot-melt foaming pressure sensitive adhesive and its manufacture method |
| CN106047176A (en) * | 2016-05-23 | 2016-10-26 | 冯智勇 | Novel tire sealing composite material containing RA-60 tackifying resin |
| CN106085239A (en) * | 2016-05-23 | 2016-11-09 | 冯智勇 | Include the tire seal composite material of BRTR tackifying resin |
| CN106085022A (en) * | 2016-05-23 | 2016-11-09 | 冯智勇 | A kind of tire seal new material being made up of high molecular polymer |
| CN109130699A (en) * | 2018-09-06 | 2019-01-04 | 郝玉花 | Automotive wheel heatproof upgrading process method |
| CN110157320A (en) * | 2019-05-31 | 2019-08-23 | 上海明辛纳米科技有限公司 | A kind of tire nano repairing liquid with self-repair function |
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Application publication date: 20140521 |