CN101691067A - Composite self-repair leakproof sealing material - Google Patents
Composite self-repair leakproof sealing material Download PDFInfo
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- CN101691067A CN101691067A CN200910153415A CN200910153415A CN101691067A CN 101691067 A CN101691067 A CN 101691067A CN 200910153415 A CN200910153415 A CN 200910153415A CN 200910153415 A CN200910153415 A CN 200910153415A CN 101691067 A CN101691067 A CN 101691067A
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Abstract
The invention relates to the technical field of composite materials, in particular to a composite self-repair leakproof sealing material. The composite self-repair leakproof sealing material solves the technical problems of unreasonable material proportioning, poor physical properties, high cost, difficult implementation and the like in the prior art. The composite self-repair leakproof sealing material comprises the following raw materials in parts by weight: 5-20 parts of ethylene propylene rubber, 5-20 parts of thermoplastic rubber, 8-20 parts of resin, 20-60 parts of softening agent, 0.1-0.5 part of vulcanizing agent, 0.1-1.5 parts of accelerant and 0-10 parts of strengthening agent. The invention has the advantages that the raw materials are selected reasonably and proportioned scientifically, thereby fully utilizing the characteristics of every material; the raw materials generate favorable comprehensive physical properties after being mixed; when being coated on the inner side of a tyre, the composite self-repair leakproof sealing material can effectively ensure self-repair leakages when the tyre is broken by a sharp object; and the raw materials have the advantages of easy obtainment and low cost, thereby providing more effective technical support for enhancing operation performance and reducing user operation cost, and conveniently realizing industrial popularization.
Description
Technical field
The present invention relates to technical field of composite materials, especially relate to a kind of composite self-repair leakproof sealing material.
Background technology
Advanced at present automobile tyre is no inner bag tire, and this tire can leak gas so that vehicle can't travel after being poked by hard thing.Since the last century late nineteen eighties, existing multiple mending-leakage glue is injected in the tire on the market, is evenly distributed on the inner surface of tire along with the rotation of tire.When having a flat tire, glue contacts with air and solidifies, and reaches the purpose of mending-leakage.It is brilliant that the shortcoming of this method is to form one deck scleroma at surface of tyre after glue contacts with air, and this layer scleroma crystalline substance both can reduce the elasticity of tire, can influence the service life of tire again.
For this reason, people have proposed more advanced method, and promptly the internal layer at tire applies solid glue shape things such as one deck isoprene rubber, butene rubber or silicon rubber.Solve the little gas leakage of tire and prick the air tight phenomenon of nail with this kind method, obtained comparatively desirable result of use.But, because isoprene rubber, butene rubber or silicon rubber are important members in the artificial synthetic rubber, range of application is very wide, not only use selling at exorbitant prices, and under the abominable working environment of tire, indexs such as the flexibility of the gluey elasticity application of anti-leakage layers of gum class, ageing resistace also are difficult to long-term adaptation.
Along with the fast development of petrochemical technology, the continuing to bring out of various macromolecule resin class adhesives, synthetic rubber and rubber composite, people have developed the high polymer elastic leakproofing material.But existing high polymer elastic leakproofing material cost is higher, costs an arm and a leg, and is difficult to realize industrialization.The someone has invented a kind of polymer self-repair sealing material for this reason, and its composition and proportioning (percentage by weight) are: thermoplastic elastomer (TPE): 38-50%, tackifier: 28-40%, softening agent: 0-5%, age resistor: 0-2%, curing agent: 0-1%, catalyst: 0.2-1%, filler: 5-15%.Though this scheme has reduced cost, its material combination is reasonable inadequately, can't reach desired technique effect.More be difficult to reach the every technical indicator of self-repair leakproof sealing material, in actual application, still can occur can't mending-leakage phenomenon.
Summary of the invention
The objective of the invention is at the problems referred to above, provide a kind of raw material compatibility reasonable, with low cost, stable and reliable for performance, long service life, and be easy to the composite self-repair leakproof sealing material of processing and manufacturing.
For achieving the above object, the present invention has adopted following technical proposal: this composite self-repair leakproof sealing material is characterized in that this material comprises following materials based on weight: EP rubbers 5-20 part; Thermoplastic elastomer 5-20 part; Resin 8-20 part; Softening agent 20-60 part; Vulcanizing agent 0.1-0.5 part; Promoter 0.1-1.5 part; Reinforcing agent 0-10 part.
EP rubbers density is lower a kind of rubber, has high fillibility; It also has excellent anti-weather, anti-ozone, heat-resisting, acid and alkali-resistance, water-fast steam, colour stability, electrical property, oil-filled property and normal temperature flowability, adds age resistor and can improve its serviceability temperature.Because EP rubbers lacks polarity, degree of unsaturation is low, thereby various polarity chemicals are all had anti-preferably patience as alcohol, acid, alkali, oxidant, cold-producing medium, washing agent, vegetable and animals oils, ketone and fat etc.Because nonpolarity substituting group in the EP rubbers molecular structure, molecule inner injection can be low, and strand can keep compliance in relative broad range, be only second to natural rubber and butadiene rubber, and still can keep at low temperatures.Thermoplastic elastomer normal temperature shows caoutchouc elasticity down, the plastic macromolecular material of tool when being heated.Resin is water insoluble, and also not imbibition is soluble in alcohol, ether, most of organic solvents such as chloroform.Thermoplastic, last fusion.Softening agent helps the mixing and the dispersion of filler in the sizing material, reduces compound viscosity and mixing energy consumption, adjusts the physical and mechanical properties of vulcanizate.Vulcanizing agent can make rubber molecular chain play cross-linking reaction, makes linear molecule form space network, and plasticity reduces, the material that elasticator (elasticizer) intensity increases.Promoter can be shortened cure time, reduces curing temperature, reduces the physical and mechanical properties of vulcanizing agent consumption and raising rubber etc.Reinforcing agent can effectively promote the physical and mechanical properties of resin and rubber, improves intensity and percentage elongation, improves wearability and the fineness of improving material surface, improves ageing resistance.Above-mentioned raw materials is reacted by the said ratio mixing, promptly make product composite self-repair leakproof sealing material of the present invention, can ensure at tire to be subjected to realizing from mending-leakage when sharp objects is destroyed.
In above-mentioned composite self-repair leakproof sealing material, described feedstock optimization parts by weight are: EP rubbers 10-15 part; Thermoplastic elastomer 8-15 part; Resin 10-15 part; Softening agent 40-50 part; Vulcanizing agent 0.2-0.4 part; Promoter 0.2-1 part; Reinforcing agent 2-8 part.
In above-mentioned composite self-repair leakproof sealing material, described EP rubbers is EPDM alkene rubber.EPDM alkene rubber is that monomer copolymerization makes with ethene, propylene and a small amount of non-conjugated dienes, because the ethylene propylene diene rubber alkadienes is positioned on the side chain, therefore ethylene propylene diene rubber not only can be used sulfur vulcanization, has also kept the various characteristics of EPM simultaneously.
In above-mentioned composite self-repair leakproof sealing material, described thermoplastic elastomer is one or more the mixture of SBS, SIS and SEBS.SBS is the s-B-S triblock copolymer, and SIS is that styrene-isoprene-phenylethene triblock copolymer, SEBS are the products after a kind of SBS hydrogenation.
In above-mentioned composite self-repair leakproof sealing material, described resin is one or more the mixture in hydrogenated petroleum resin, terpene resin and the coumarone indene resin.
In above-mentioned composite self-repair leakproof sealing material, described softening agent is one or both mixtures in naphthenic oil, white oil and the aromatic naphtha.
In above-mentioned composite self-repair leakproof sealing material, described vulcanizing agent is a sulphur.
In above-mentioned composite self-repair leakproof sealing material, described promoter is one or both mixtures of 2-benzothiazolyl mercaptan and tetramethylthiuram disulfide and ZnO.
In above-mentioned composite self-repair leakproof sealing material, described reinforcing agent is a nano silicon.
Compared with prior art, the advantage of this composite self-repair leakproof sealing material is: 1, each raw material selection is reasonable, the compatibility science, made full use of each properties of materials, produce superior comprehensive physical characteristic after mixing, when being coated in the tire inboard, can effectively guarantee to be subjected to realizing from mending-leakage when sharp objects is destroyed at tire.2, each raw material is easy to obtain, and cost is lower, for raising serviceability, reduction customer using cost provide more effective technical support, can realize Industry Promotion easily.
The specific embodiment
This composite self-repair leakproof sealing material comprises following materials based on weight: EP rubbers 5-20 part; Thermoplastic elastomer 5-20 part; Resin 8-20 part; Softening agent 20-60 part; Vulcanizing agent 0.1-0.5 part; Promoter 0.1-1.5 part; Reinforcing agent 0-10 part.Be preferably EP rubbers 10-15 part; Thermoplastic elastomer 8-15 part; Resin 10-15 part; Softening agent 40-50 part; Vulcanizing agent 0.2-0.4 part; Promoter 0.2-1 part; Reinforcing agent 2-8 part.The EP rubbers here is EPDM alkene rubber; Thermoplastic elastomer is one or more the mixture of SBS, SIS and SEBS; Resin is one or more the mixture in hydrogenated petroleum resin, terpene resin and the coumarone indene resin; Softening agent is one or both mixtures in naphthenic oil, white oil and the aromatic naphtha; Vulcanizing agent is a sulphur; Promoter is one or both mixtures of 2-benzothiazolyl mercaptan and tetramethylthiuram disulfide and ZnO; Reinforcing agent is a nano silicon.
Application Example 1:
Take by weighing EPDM alkene rubber (EPDM) 500g and on rubber mixing machine, plasticate, and add sulphur 7g, tetramethylthiuram disulfide 5g, ZnO 20g carries out mixing, pulverizes through pulverizer.Then with SBS 200g, SEBS 300g, hydrogenated petroleum resin 200g, terpene resin 100g, naphthenic oil 1100g, aromatic naphtha 200g, silica 1 00g, join in the thermal response container (temperature is controlled at about 190 ℃) together and stir, react, react after 2 hours and get final product discharging, product composite self-repair leakproof sealing material of the present invention.
Application Example 2:
Take by weighing EPDM alkene rubber (EPDM) 350g and on rubber mixing machine, plasticate, and add sulphur 5g, tetramethylthiuram disulfide 2g, 2-benzothiazolyl mercaptan 3g, ZnO 16g carries out mixing, pulverizes through pulverizer.Then with SBS 250g, SEBS 400g, hydrogenated petroleum resin 200g, terpene resin 150g, naphthenic oil 800g, white oil 500g, aromatic naphtha 50g, silica 50g joins in the thermal response container (temperature is controlled at about 200 ℃) together and stirs, reacts, reacts after 1.5 hours and get final product discharging, product composite self-repair leakproof sealing material of the present invention.
Application Example 3:
Take by weighing EPDM alkene rubber 300g and on rubber mixing machine, plasticate, and add sulphur 4.5g, tetramethylthiuram disulfide 3.5g, ZnO 15g carries out mixing, pulverizes through pulverizer.Then with SIS 200g, SEBS 500g, hydrogenated petroleum resin 250g, coumarone 50g, white oil 1300g, aromatic naphtha 50g, silica 50g, join in the thermal response container (temperature is controlled at about 210 ℃) together and stir, react, react after 1 hour and get final product discharging, product composite self-repair leakproof sealing material of the present invention.
Application Example 4:
Take by weighing EPDM alkene rubber 400g and on rubber mixing machine, plasticate, and add sulphur 6g, 2-benzothiazolyl mercaptan 6g, ZnO 20g carries out mixing, pulverizes through pulverizer.Then with SIS 200g, SEBS 400g, hydrogenated petroleum resin 150g, terpene resin 150g, naphthenic oil 700g, white oil 600g joins in the thermal response container (temperature is controlled at about 220 ℃) together and stirs, reacts, reacts after 1 hour and get final product discharging, product composite self-repair leakproof sealing material of the present invention.
Application Example 5:
Take by weighing EPDM alkene rubber 250g and on rubber mixing machine, plasticate, and add sulphur 4g, tetramethylthiuram disulfide 2.5g, ZnO 12g carries out mixing, pulverizes through pulverizer.Then with SBS 100g, SEBS 650g, hydrogenated petroleum resin 100g, terpene resin 150g, naphthenic oil 800g, white oil 600g, silica 20g, join in the thermal response container (temperature is controlled at about 220 ℃) together and stir, react, react after 1 hour and get final product discharging, product composite self-repair leakproof sealing material of the present invention.
The part technical indicator of product composite self-repair leakproof sealing material of the present invention is: melt viscosity: mean value 3000---8000 centipoises; Softening point: mean value 90---130 ℃; Low temperature: mean value-40---0 ℃.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used multiple term morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (9)
1. composite self-repair leakproof sealing material is characterized in that this material comprises following materials based on weight:
EP rubbers 5-20 part
Thermoplastic elastomer 5-20 part
Resin 8-20 part
Softening agent 20-60 part
Vulcanizing agent 0.1-0.5 part
Promoter 0.1-1.5 part
Reinforcing agent 0-10 part.
2. composite self-repair leakproof sealing material according to claim 1 is characterized in that, described feedstock optimization parts by weight are:
EP rubbers 10-15 part
Thermoplastic elastomer 8-15 part
Resin 10-15 part
Softening agent 40-50 part
Vulcanizing agent 0.2-0.4 part
Promoter 0.2-1 part
Reinforcing agent 2-8 part.
3. composite self-repair leakproof sealing material according to claim 1 and 2 is characterized in that, described EP rubbers is EPDM alkene rubber.
4. composite self-repair leakproof sealing material according to claim 1 and 2 is characterized in that, described thermoplastic elastomer is one or more the mixture of SBS, SIS and SEBS.
5. composite self-repair leakproof sealing material according to claim 1 and 2 is characterized in that, described resin is one or more the mixture in hydrogenated petroleum resin, terpene resin and the coumarone indene resin.
6. composite self-repair leakproof sealing material according to claim 1 and 2 is characterized in that, described softening agent is one or both mixtures in naphthenic oil, white oil and the aromatic naphtha.
7. composite self-repair leakproof sealing material according to claim 1 and 2 is characterized in that, described vulcanizing agent is a sulphur.
8. composite self-repair leakproof sealing material according to claim 1 and 2 is characterized in that, described promoter is one or both mixtures of 2-benzothiazolyl mercaptan and tetramethylthiuram disulfide and ZnO.
9. composite self-repair leakproof sealing material according to claim 1 and 2 is characterized in that, described reinforcing agent is a nano silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910153415A CN101691067A (en) | 2009-10-12 | 2009-10-12 | Composite self-repair leakproof sealing material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910153415A CN101691067A (en) | 2009-10-12 | 2009-10-12 | Composite self-repair leakproof sealing material |
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| CN101691067A true CN101691067A (en) | 2010-04-07 |
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| CN200910153415A Pending CN101691067A (en) | 2009-10-12 | 2009-10-12 | Composite self-repair leakproof sealing material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585426A (en) * | 2012-02-08 | 2012-07-18 | 张兵 | Bulk density (BD)-free radical silicon molecule polymeric material capable of adapting to tire self repair |
| CN105255091A (en) * | 2015-10-10 | 2016-01-20 | 嘉兴市博尔塑胶有限公司 | Stabbing-resisting, flatting-resisting and anti-static tire solid tire core obtained through SEBS recycled materials |
| CN108291068A (en) * | 2015-11-30 | 2018-07-17 | 株式会社普利司通 | Rubber composition |
| CN109401082A (en) * | 2018-10-31 | 2019-03-01 | 江苏伊顿航天材料股份有限公司 | A kind of EPDM sealing element |
-
2009
- 2009-10-12 CN CN200910153415A patent/CN101691067A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585426A (en) * | 2012-02-08 | 2012-07-18 | 张兵 | Bulk density (BD)-free radical silicon molecule polymeric material capable of adapting to tire self repair |
| CN102585426B (en) * | 2012-02-08 | 2013-10-02 | 张兵 | Bulk density (BD)-free radical silicon molecule polymeric material capable of adapting to tire self repair |
| CN105255091A (en) * | 2015-10-10 | 2016-01-20 | 嘉兴市博尔塑胶有限公司 | Stabbing-resisting, flatting-resisting and anti-static tire solid tire core obtained through SEBS recycled materials |
| CN108291068A (en) * | 2015-11-30 | 2018-07-17 | 株式会社普利司通 | Rubber composition |
| US10766213B2 (en) | 2015-11-30 | 2020-09-08 | Bridgestone Corporation | Rubber composition |
| CN109401082A (en) * | 2018-10-31 | 2019-03-01 | 江苏伊顿航天材料股份有限公司 | A kind of EPDM sealing element |
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Application publication date: 20100407 |