CN103805020A - High-molecular hot-melt adhesive for preventing air leakage of automobile tyre, and manufacturing method of high-molecular hot-melt adhesive - Google Patents
High-molecular hot-melt adhesive for preventing air leakage of automobile tyre, and manufacturing method of high-molecular hot-melt adhesive Download PDFInfo
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- CN103805020A CN103805020A CN201210460044.3A CN201210460044A CN103805020A CN 103805020 A CN103805020 A CN 103805020A CN 201210460044 A CN201210460044 A CN 201210460044A CN 103805020 A CN103805020 A CN 103805020A
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Abstract
The invention relates to a high-molecular hot-melt adhesive for security upgrade of an automobile tyre. The high-molecular hot-melt adhesive comprises the following components in percentage by weight: 40%-60% of thermoplastic elastomers, 34%-51% of thickening agents, 5%-8% of plasticizing agents, 0.5%-1.5% of anti-aging agents, 0.2%-1% of cross-linking agents and 3%-5% of filling agents. By using a glue sprayer of the automobile tyre, the high-molecular hot-melt adhesive is sprayed to the inner wall of a tyre after being hot-melted, the inner wall of the tyre is only subjected to mould release agent removal washing and drying treatment without being subjected to any damaging processing; the tyre can be upgraded to normally operate between low temperature of -40 DEG C and high temperature of +120 DEG C by spraying a layer of the high-molecular hot-melt adhesive with the thickness more than 3.5 mm on the integral part or crown type body part of the inner wall of the tyre, and the tyre has bullet-proof, leakage-proof and anti-puncturing properties. The invention also discloses a manufacturing method of the high-molecular hot-melt adhesive.
Description
Technical field
The present invention relates to a kind of hot-fusible high-molecular glue and manufacture method thereof that prevents tyre leakage.
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, progressively promotes the use of automobiles without inner tubes wheel for load-carrying vehicle national requirements.Use and the advantage such as grow interval time because automobiles without inner tubes wheel has the good and inflation of good thermal diffusivity, flexibility, stopping property, ride comfort, performance, 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 forms the brilliant elasticity that can reduce automotive wheels tire of one deck scleroma, has a strong impact on various technical features and the life-span of automotive wheels tire, do not received by market.Say that important breakthrough appears in century this technical field of the nineties, found a kind of more advanced selfsealings glue, it is the solid-state sticky jelly such as polyisoprene rubber or butene rubber or silicon rubber that sprays one deck 2～3mm in automotive wheels, 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 automobile stove 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, heat up too high and coating in tire of tire, under centrifugal action, there is local deformaton, affect 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 its popularization of restriction.
Recent years, along with the fast development of petrochemical technology, continuing to bring out of various macromolecule resin class tackiness agents, synthetic rubber and rubber composite, the external high polymer elastic glue-leakage-resistant material of promoting has entered my domestic market, due to the external import of conventional raw material, price is high, the limited product simplification that causes of supplying, cause this high polymer elastic glue-leakage-resistant material to come into the market to run into many difficulties, also hindered the industry development process of domestic this product simultaneously.
Therefore, founding and release a kind of high temperature resistant, low temperature resistant while has again the constructed performance of international high polymer elastic glue-leakage-resistant, 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 automobile conventional tyre upgrading.
As can be seen here, above-mentioned existing automotive wheels hot-fusible high-molecular glue aspect for upgrading, obviously still has many defects.But its product is simple at first view, in fact very complicated, the technical requirements of hot-fusible high-molecular glue is very high because it is the basic guarantee of vehicle operating safety, next is along with automotive wheels tire need stand the larger high low temperature temperature difference and the test of long-time bearing pressure work, and to transient equilibrium, run at high speed, the safety index of durability of product requires high especially, bear the low temperature of-40 ℃, after in the time that vehicle high-speed moves, automotive wheels tire is punctured, pierces through, hot-fusible high-molecular glue is self-complementary and keep one's end up.Vehicle at a high speed, under the long-time travel situations of high temperature, when automotive wheels tire periphery envrionment temperature can reach 120 ℃ of left and right, after tire is punctured, pierces through, hot-fusible high-molecular glue is self-complementary and keep one's end up.Existing hot-fusible high-molecular glue be difficult to reach this requirement or due to hot-fusible high-molecular glue poor adhesive force and automotive wheels tire inner wall surface adhesion not firm, hot-fusible high-molecular glue-line comes off or the defect of off-clip, and is difficult to reach the undismayed function and efficacy of automotive wheels tire after upgrading.And need be further improved.In order to solve the problem of above-mentioned existence, relevant manufacturer and research institute, the there's no one who doesn't or isn't hard thought of institute are asked scheme solution, are found but have no for a long time applicable hot-fusible high-molecular glue always.Therefore how to found a kind of new hot-fusible high-molecular glue, be used for solving automotive wheels tire upgrading Explosion-Proof, make it really can make the automobile conventional tyre 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 puts aside improved target.
Summary of the invention
Adopting hot-fusible high-molecular glue to be sprayed at automotive wheels tire inner wall is the key problem in technology of automotive wheels upgrading: the one, and hot-fusible high-molecular glue should have high elasticity, resistance to air loss, tensile strength; Its two hot-fusible high-moleculars glue and automotive wheels tire inner wall surface have strong sticking power.Analyze some existing hot-fusible high-molecular glue, some substantially meets key problem in technology " " requirement on functional performance, but is that the sticking power aspect on automotive wheels tire inner wall surface fails to reach key problem in technology " twos' " requirement.Its reason is, the material of automotive wheels tire is vulcanized rubber, and surface is inertia very, 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 slacken or lose the automotive wheels tire leakproof after upgrading, resistance to bundle function.Founding a kind of hot-fusible high-molecular glue and both met key problem in technology " ", meet again key problem in technology " twos' " requirement, is exactly purpose of the present invention.
Particularly, the object of the invention is to, overcome the defect that existing hot-fusible high-molecular glue exists, and provide a kind of high temperature resistant (being greater than 120 ℃), low temperature resistant (lower than-40 ℃), oil-proofness, water tolerance, and there is the hot-fusible high-molecular glue for automobile conventional tyre safety upgrade of snappiness, height resistance to air loss, high-tensile and strong adhesive force.
Another object of the present invention is to, a kind of preparation method of above-mentioned this hot-fusible high-molecular glue is provided.
The object of the invention to solve the technical problems realizes by the following technical solutions.The hot-fusible high-molecular glue for automobile conventional tyre safety upgrade proposing according to the present invention, its composition and weight proportion: thermoplastic elastomer: 40～57%; Tackifier: 34～51%; Softening agent: 5～8%; Anti-aging agent and/or antioxidant: 0.5～1.5%; Linking agent: 0.2～1%; Weighting agent: 3～5%.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid hot-fusible high-molecular glue, is characterized in that described thermoplastic elastomer, is selected from one or more mixing in thermoplastic elastomer SBS, SEBS, SEPS; Described tackifier are selected from one or more mixing of pentalyn, coumarone indene resin, coumarone indene resin rosin; Described antioxidant be selected from antioxidant 2246 300 or its mix, described anti-aging agent is selected from anti-aging agent RD; Described softening agent is selected from one or more mixing in aromatic hydrocarbon oil, dioctyl phthalate (DOP), dimixo-octyl phthalate; Described linking agent is zinc oxide or resol or its mixing; Described weighting agent is silica powder or carbon black or its mixing.
The object of the invention to solve the technical problems also realizes by the following technical solutions.The manufacture method of hot-fusible high-molecular glue as the aforementioned proposing according to the present invention, it 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.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The manufacture method of aforesaid hot-fusible high-molecular glue, wherein said continous way mixing equipment is propeller stirrer, high-shear decollator or planetary-type mixer.
The manufacture method of aforesaid hot-fusible high-molecular glue, wherein said continous way mixing equipment is planetary-type mixer.
The object of the invention to solve the technical problems also realizes by the following technical solutions.The manufacture method of hot-fusible high-molecular glue as the aforementioned proposing according to the present invention, it 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.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The manufacture method of aforesaid hot-fusible high-molecular glue, wherein said continous way mixing equipment is propeller stirrer, high-shear decollator or planetary-type mixer.
The manufacture method of aforesaid hot-fusible high-molecular glue, wherein said continous way mixing equipment is planetary-type mixer.
The present invention compared with prior art has obvious advantage and beneficial effect.By technique scheme, a kind of polymer selfsealings thermosol for automobile conventional tyre safety upgrade of the present invention and preparation method thereof can reach suitable technical progress and practicality, and there is the extensive utility value in industry, polymer selfsealings hot melt colloidal sol of the present invention is applied to doughnut inwall, can combine closely with automotive wheels tire inner wall surface, form the highdensity flexible glue of a kind of polymer, it at least can reach following beneficial effect:
(1) coating that hot-fusible high-molecular glue of the present invention forms in automoblie tyre inner wall surface, there is superior elasticity and ductility, be difficult for departing from automotive wheels inner wall surface 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.
(2) play certain explosion-proof.
(3) when automotive wheels tire such as, by sharp object (spike thing, blade, glass cullet etc.) from automotive wheels tyre surface thrusts, the highdensity flexible glue layer of polymer 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.
(4) 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 hot-fusible high-molecular glue-line, when penetrator is pulled out or when Automatic-falling, the moment resilience of hot-fusible high-molecular glue 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.
(5) in the situation of high vehicle speeds by diameter be not more than 8mm, length is not more than 10cm sharp object or steel nail pierces through, 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 hot-fusible high-molecular glue-line forms on automotive wheels tire extracting sharp object or steel nail, can moment auto-mending filling under gas pressure.
(6) can make automotive wheels run well within the scope of self-temperature-40 ℃～120 ℃, can make doughnut upgrade to, can be in automotive wheels tire periphery envrionment temperature: within the scope of low temperature-40 ℃ to high temperature+120 ℃, at a high speed or run at a low speed, by diameter be not more than 8mm, length is not more than 10cm sharp object and steel nail pierces through or bullet punctures, upgrading after automotive wheels tire keep one's end up.After upgrading, automotive wheels has shellproof, leakproof, the function and efficacy of resistance to bundle.In spraying process, without any damaging processing is carried out in automotive wheels tire inner wall surface, only tire inner wall is gone to releasing agent cleaning, drying treatment.
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.
Accompanying drawing explanation
Nothing
Embodiment
Technique means and effect of taking for reaching predetermined goal of the invention for further setting forth the present invention, below in conjunction with preferred embodiment, to a kind of hot-fusible high-molecular glue and its embodiment of manufacture method, feature and the effect thereof that prevents tyre leakage proposing according to the present invention, be described in detail as follows.
Composition and the weight proportion of the hot-fusible high-molecular glue that prevents tyre leakage of the present invention:
Thermoplastic elastomer: 40～57%;
Tackifier: 34～51%;
Softening agent: 5～8%;
Anti-aging agent and/or antioxidant: 0.5～1.5%;
Linking agent: 0.2～1%;
Weighting agent: 3～5%.
Wherein, described thermoplastic elastomer, preferably one or more mixing in thermoplastic elastomer SBS, SEBS, SEPS.Described tackifier: be preferable over one or more mixing in pentalyn, coumarone indene resin, coumarone indene resin rosin.Described antioxidant and anti-aging agent are preferable over respectively antioxidant 2246,300, one or more mixing in anti-aging agent RD.Described softening agent is preferable over one or more mixing in aromatic hydrocarbon oil, dioctyl phthalate (DOP) (DOP), dimixo-octyl phthalate (DIOP); The preferred autoxidation zinc of described linking agent or resol or its mixing; Described weighting agent is selected from silica powder or carbon black or its mixing.
The present invention obtains through abundant experimental results analysis: the present invention uses tackifier, viscosity during for reducing thermoplastic elastomer hot melt, improves by viscosity and cohesive strength, adjusting heat resisting temperature and open assembly time, improves operability and reduce costs.The present invention has selected small proportion softening agent (<10%), for increasing hot-fusible high-molecular glue ductility (and mobility), tensile strength, hardness, high temperature resistant, low temperature resistant and use persistence, improve its tensile strength, first viscosity, elongation, adapted to hot-fusible high-molecular glue in doughnut at a high speed, high temperature operation and not departing from.And the glue-line that the linking agent that the present invention uses can make hot melting spraying form has resistance to elevated temperatures and persistence, the weighting agent that the present invention uses has the function of thickening, increase-volume, and there is fire-retardant, rot-resistant effect, and can increase thermotolerance and the persistence of hot melt adhesive layer.
The manufacture method of above-mentioned this hot-fusible high-molecular glue of the present invention: 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.Described continous way mixing equipment is preferably propeller stirrer, high-shear decollator or planetary-type mixer, most preferably planetary-type mixer.
This hot-fusible high-molecular glue of the present invention is applied to automoblie tyre, by hot melting spraying technology, be sprayed at automoblie tyre inner wall surface all or inner wall surface crown type body divide, and form be greater than the uniform coating that 3.5mm is thick, for the sulfuric horizon of thickening automotive wheels tire, it is played to certain explosion-proof.Coating and doughnut inner wall surface are combined closely, and after cooling and shaping, form the highdensity flexible glue of a kind of polymer, have superior elasticity and ductility.
Embodiment 1
The proportioning of hot-fusible high-molecular glue and component (take % by weight as standard) 48% thermoplastic elastomer, 43% tackifier, 8% softening agent, anti-aging agent and antioxidant totally 1%, linking agent 1%, weighting agent 3%; Take thermoplastic elastomer SEBSS 660g, thermoplastic elastomer SBS 300g; Tackifier: coumarone indene resin 600g, pentaerythritol ester 260g; Softening agent: aromatic hydrocarbon oil 120g, dioctyl phthalate (DOP) 40g; Antioxidant 300 10g, anti-aging agent RD 10g; Linking agent: zinc oxide 20g; Weighting agent: silica powder 60g.
Its preparation method is: utilize crushing material equipment, solid substances is ground into <150 order particle; Utilize continous way mixing equipment planetary-type mixer that solid substances and liquid material after pulverizing are evenly mixed, mix rear metering pack.
Embodiment 2
The proportioning of hot-fusible high-molecular glue and component (take % by weight as standard) 50% thermoplastic elastomer, 42% tackifier, 7% softening agent, 1% antioxidant, linking agent 1%, weighting agent 5%; Take thermoplastic elastomer SEPS 800g, thermoplastic elastomer SBS 100g, thermoplastic elastomer SEBS 100g; Tackifier: coumarone indene resin rosin 500g, coumarone indene resin 340g; Softening agent: aromatic hydrocarbon oil 100g, dimixo-octyl phthalate 40g; Antioxidant 2246 10g, antioxidant 300 10g; Linking agent: resol 20g; Weighting agent: silica powder 50g, carbon black 50g.
Its preparation method is: utilize crushing material equipment, solid substances is ground into <150 order particle; Utilize continous way mixing equipment propeller stirrer that solid substances and liquid material after pulverizing are evenly mixed, mix rear metering pack.
Embodiment 3
The proportioning of hot-fusible high-molecular glue and component (take % by weight as standard) 49% thermoplastic elastomer, 45% tackifier, 5% softening agent, anti-aging agent and antioxidant totally 1%, linking agent 0.5%, weighting agent 4%; Take thermoplastic elastomer SBS 580g, thermoplastic elastomer SEBS 400g; Tackifier: coumarone indene resin 900g; Softening agent: aromatic hydrocarbon oil 50g, dimixo-octyl phthalate 50g; Anti-aging agent RD 10g, antioxidant 300 10g; Linking agent: zinc oxide 10g; Weighting agent: silica powder 50g, carbon black 30g.
Its preparation method is: utilize crushing material equipment, solid substances is ground into <150 order particle; Utilize continous way mixing equipment high-shear decollator that solid substances and liquid material after pulverizing are evenly mixed, mix rear metering pack.
Embodiment 4
The proportioning of hot-fusible high-molecular glue and component (take % by weight as standard): 45% thermoplastic elastomer, 48% tackifier, 6% softening agent, 1% antioxidant, linking agent 0.3%; Take thermoplastic elastomer SBS 600g, thermoplastic elastomer SEBS 300g; Tackifier: pentalyn 460g, coumarone indene resin 500g; Softening agent: aromatic hydrocarbon oil 80g, dimixo-octyl phthalate (DIOP) 40g; Antioxidant 2246 10g, antioxidant 300 10g; Linking agent: zinc oxide 6g.
Its preparation method is: utilize crushing material equipment, solid substances is ground into <150 order particle; Utilize continous way mixing equipment planetary-type mixer that solid substances and liquid material after pulverizing are evenly mixed, mix rear metering pack.
Embodiment 5
The proportioning of hot-fusible high-molecular glue and component (take % by weight as standard) 40% thermoplastic elastomer, 51% tackifier, 8% softening agent, 1% antioxidant, linking agent 1%; Take thermoplastic elastomer SBS 800g; Tackifier: pentalyn 1020g; Softening agent: aromatic hydrocarbon oil 160g; Antioxidant 300 20g; Linking agent: zinc oxide 14g, resol 6g.
Its preparation method is: utilize crushing material equipment, solid substances is ground into <150 order particle; Utilize continous way mixing equipment planetary-type mixer that solid substances and liquid material after pulverizing are evenly mixed, mix rear metering pack.
Embodiment 6
The proportioning of hot-fusible high-molecular glue and component (take % by weight as standard) 60% thermoplastic elastomer, 34% tackifier, 5% softening agent, 1% anti-aging agent, linking agent 0.6%; Take thermoplastic elastomer SEPS 600g, thermoplastic elastomer SEBS 600g; Tackifier: ancient grand horse resin rosin 680g; Softening agent: dioctyl phthalate (DOP) 100g; Anti-aging agent RD 20g; Linking agent: zinc oxide 4g; Weighting agent: silica powder 8g.
Its preparation method is: utilize crushing material equipment, solid substances is ground into <150 order particle; Utilize continous way mixing equipment planetary-type mixer that solid substances and liquid material after pulverizing are evenly mixed, mix rear metering pack.
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 (5)
1. the hot-fusible high-molecular glue that can prevent tyre leakage, is characterized in that its composition and weight proportion:
Thermoplastic elastomer: 40～57%;
Tackifier: 34～51%;
Softening agent: 5～8%;
Anti-aging agent and/or antioxidant: 0.5～1.5%;
Linking agent: 0.2～1%;
Weighting agent: 3～5%.
2. hot-fusible high-molecular glue according to claim 1, is characterized in that described thermoplastic elastomer, is selected from one or more mixing in thermoplastic elastomer SBS, SEBS, SEPS;
Described tackifier are selected from one or more mixing of pentalyn, coumarone indene resin, coumarone indene resin rosin;
Described antioxidant be selected from antioxidant 2246 300 or its mix, described anti-aging agent is selected from anti-aging agent RD;
Described softening agent is selected from one or more mixing in aromatic hydrocarbon oil, dioctyl phthalate (DOP), dimixo-octyl phthalate;
Described linking agent is zinc oxide or resol or its mixing;
Described weighting agent is silica powder or carbon black or its mixing.
3. a method of manufacturing hot-fusible high-molecular glue as claimed in claim 1 or 2, is characterized in that: 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.
4. the manufacture method of hot-fusible high-molecular glue according to claim 3, is characterized in that described continous way mixing equipment is propeller stirrer, high-shear decollator or planetary-type mixer.
5. the manufacture method of hot-fusible high-molecular glue according to claim 4, is characterized in that described continous way mixing equipment is planetary-type mixer.
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| CN112373083A (en) * | 2020-10-22 | 2021-02-19 | 南通骏标自密封安全轮胎科技有限公司 | Processing technology of coating type punctured self-sealing tire surface layer mold release agent-free tire |
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