CN102850662A - Insulation rubber and preparation method thereof - Google Patents
Insulation rubber and preparation method thereof Download PDFInfo
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- CN102850662A CN102850662A CN2011101749697A CN201110174969A CN102850662A CN 102850662 A CN102850662 A CN 102850662A CN 2011101749697 A CN2011101749697 A CN 2011101749697A CN 201110174969 A CN201110174969 A CN 201110174969A CN 102850662 A CN102850662 A CN 102850662A
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Abstract
Insulation rubber, applied in a grab handle of an electric tool, comprises (by weight percentage) ethylene propylene terpolymer 25-32, carbon black, 1-2, white carbon black 20-25, tackifying resin 1-2, softening agent 9-11, and microcrystalline wax 0.02-0.05. The invention adopts ethylene propylene terpolymer as rubber main body material, to ensure product is provided with good insulating property and ozone ageing proof performance, prolong service life of the product, and reduce use-cost. The employment of small quantity of microcrystalline wax can further step ensure resistance to ozone. Because the employment of microcrystalline wax is small, so as to simultaneously avoid rubber binding performance decrease. In addition, carbon black is provided with electrical conductivity and the adoption of white carbon black and tackifying resin mixture can reduce insulating property decrease caused by employment of carbon black. Simultaneously, environment-friendly paraffin oil is used as a softening agent, to further ensure the rubber can satisfy environment-friendly requirement.
Description
Technical field
The present invention relates to a kind of rubber, be specifically related to a kind of electro-insulating rubber on the power tool lever and preparation method of this electro-insulating rubber of being applied to.
Background technology
The normal electro-insulating rubber that adopts on traditional power tool lever, with the danger of avoiding getting an electric shock in staff's use procedure, therefore, the insulating property of such rubber are had relatively high expectations.
But the requirement along with scientific and technological progress, at present, the insulating property of not only having relatively high expectations for this series products, and to have simultaneously good anti-behaviour of ozone and heat aging property, in the work-ing life of guaranteeing product, reduce production costs, simultaneously, satisfy the instantly requirement of EU REACH Legislation, guarantee the environmental-protecting performance of this type of rubber, avoid owing to contacting the generation that causes allergic or Other diseases etc. with human body direct; Therefore, traditional rubber item has merely good insulating property, has not satisfied the requirement of modern society far away.
Therefore, a kind of insulating property are good, and work-ing life is longer, and production cost is lower, and the elastomeric material of comparatively environmental protection is demanded urgently occurring.
Summary of the invention
Existing rubber item is only simple to possess insulating property in order to solve, anti-behaviour of ozone and heat aging property are relatively poor, fragile, work-ing life is shorter, the problem such as the higher and environmental-protecting performance of use cost is relatively poor, the invention discloses a kind of electro-insulating rubber, to reach when possessing good insulating property, anti-behaviour of ozone and heat aging property are stronger, and work-ing life is longer, the production and application cost is lower, and environmental-protecting performance is purpose preferably.
Technical scheme of the present invention is as follows:
A kind of electro-insulating rubber, be applied on the lever of power tool, described electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 25%-32%, carbon black 1%-2%, white carbon black 20%-25%, tackifying resin 1%-2%, tenderizer 9%-11%, Microcrystalline Wax 0.02%-0.05%.
Preferably, described electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 26%-30%, carbon black 1.2%-1.9%, white carbon black 21%-24%, tackifying resin 1.2%-1.8%, tenderizer 9.2%-10.5%, Microcrystalline Wax 0.025%-0.045%.
Preferably, described electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 27%-29%, carbon black 1.4%-1.7%, white carbon black 22%-23.5%, tackifying resin 1.4%-1.7%, tenderizer 9.8 %-10.3%, Microcrystalline Wax 0.03%-0.04%.
Preferably, described electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 28.5%, carbon black 1.5%, white carbon black 22.5%, tackifying resin 1.5%, tenderizer 10%, Microcrystalline Wax 0.035%.
Preferably, described carbon black is N774.
Preferably, described tenderizer is paraffin oil.
A kind of preparation method of electro-insulating rubber, concrete step is as follows:
(1) the first step batching: according to the proportioning of claim 1, will place after the terpolymer EP rubber weighing; To be combined together after tackifying resin, the Microcrystalline Wax weighing; Carbon black adopts artificial batching; White carbon black and tenderizer adopt upper subsidiary engine to prepare burden;
(2) second step banburying: at first in the time of 50 ℃～60 ℃, terpolymer EP rubber is dropped in the Banbury mixer, in Banbury mixer, throw in tackifying resin, Microcrystalline Wax simultaneously; After mixing 50～60 seconds, drop into white carbon black and carbon black machine tenderizer; Mixing 50-60 drops into other Synergist S-421 95 after second, clean after mixing 80 seconds again, more mixing 50-60 second, carries out afterwards binder removal when temperature is lower than 110 ℃;
(3) the 3rd steps were opened refining: the A refining glue (not adding vulcanizing agent) that mixer mixing is finished throw in carry out in the mill mixing, slice blanking after mill turned refining 110～130 seconds;
(4) the 4th steps cooling: film is cooled to below 35 ℃ at cooler;
(5) the 5th step rewindings: cooled film is collected by travelling belt.
Preferably, the type of cooling is air-cooled.
Electro-insulating rubber disclosed by the invention by adopting terpolymer EP rubber as the body of rubber material, guarantees that product has good insulating property and good ozone-resistant aging property, increases the work-ing life of product, reduces use cost; Ozone resistance has further been guaranteed in the use of a small amount of Microcrystalline Wax, and because the usage quantity of Microcrystalline Wax is less, has also avoided simultaneously glue bond decline; In addition, because carbon black has electroconductibility, by adopting white carbon black and tackifying resin mixture, reduce the decline of the insulating property aspect of bringing because of the use carbon black; Adopt simultaneously the environment-friendly type paraffin oil as tenderizer, guaranteed that further this sizing material can satisfy the requirement of environmental protection aspect.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention technology, the below will do to introduce simply to the accompanying drawing of required use in the embodiment technical description, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of electro-insulating rubber preparation technology schema disclosed by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The invention discloses a kind of electro-insulating rubber, to reach when possessing good insulating property, anti-behaviour of ozone and heat aging property are stronger, and work-ing life is longer, and the production and application cost is lower, and environmental-protecting performance is purpose preferably.
A kind of electro-insulating rubber is applied on the lever of power tool, and this electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 25%, carbon black N774 1%, white carbon black 20%, tackifying resin 1%, paraffin oil 9%, Microcrystalline Wax 0.02%.
Ethylene Propylene Terpolymer is the terpolymer of ethene, propylene and non-conjugated diene hydrocarbon.Diolefine has special structure, only has the ability copolymerization of one of two keys, undersaturated pair of key mainly is as the interlinkage place, another is undersaturated can not to become main polymer chain, only can become the avris chain, the main polymer chain of Ethylene Propylene Terpolymer is fully saturated, and this characteristic is so that Ethylene Propylene Terpolymer can be resisted heat, light, oxygen, especially ozone.Ethylene Propylene Terpolymer is non-polar in essence, but polar solvent and chemicals are had resistance, and water-intake rate is low, has good insulation characterisitic, therefore adopt terpolymer EP rubber as the body of rubber material, for product provides good insulating property and good ozone-resistant aging property.And carbon black adopts N774, N774 is semi-reinforcing hydrocarbon black, given sizing material high elongation rate, low-heat-generation, snappiness and good ageing-resistant performance etc., increases the work-ing life of product, reduces production costs.
Add a small amount of Microcrystalline Wax and further guaranteed the ozone proof performance of rubber, and less because of usage quantity, also avoided the decline of glue bond.
Because the application's rubber is mainly used on the lever of power tool, so the rubber insulation performance requriements is higher, but the carbon black in the rubber is a kind of material that can conduct electricity, such as inappropriate processing, in use, probably cause the problems such as human electric shock, human-body safety is caused a hidden trouble.Therefore, in this rubber adapted white carbon black and tackifying resin, to reduce because using the decline of the insulating property aspect that carbon black brings, guarantee the insulating property of rubber, guarantee staff's safety.
In addition, because this rubber is mainly for the production of the parts such as lever of power tool, with Person's skin more touch opportunity is arranged, so the environmental protection aspect requires just to seem particularly important, but because carbon black is a kind of material that easily contains polycyclic aromatic hydrocarbons in the elastomeric material, and polycyclic aromatic hydrocarbons is a kind of high carcinogenic substance, has a strong impact on HUMAN HEALTH; Therefore, adopt a small amount of carbon black also just well to control the content of polycyclic aromatic hydrocarbons in the sizing material in the rubber, reduce the harm that rubber causes human body.
Simultaneously, the tenderizer that uses in this rubber compounding is the environment-friendly type paraffin oil, and after testing, wherein the content of polycyclic aromatic hydrocarbons is extremely low for 0.2PPM, has guaranteed that further this sizing material can satisfy the requirement of environmental protection aspect.
This rubber also comprises 0.5% processing aid, and other auxiliary agent mixture is 43.48%, and processing aid is mainly one or more the mixture in softening agent, peptizer, tackifier, reinforced resin, levelling agent and the dispersion agent; Processing aid can effectively improve sizing material in mill and Banbury mixer mixing, roll, extrude, processability, improve simultaneously the dispersed of filler and shorten mixing time.All the other auxiliary agents are mainly the auxiliary agent of one or more mixing in potter's clay, zinc oxide, stearic acid, silane coupling agent, the polyoxyethylene glycol.
The preparation method of this electro-insulating rubber, concrete step is as follows:
(1) the first step batching: will place after the terpolymer EP rubber weighing; To be combined together after tackifying resin, the Microcrystalline Wax weighing; Carbon black adopts artificial batching; White carbon black and paraffin oil adopt upper subsidiary engine to prepare burden;
(2) second step banburying: at first in the time of 50 ℃～60 ℃, terpolymer EP rubber is dropped in the Banbury mixer, in Banbury mixer, throw in tackifying resin, Microcrystalline Wax simultaneously; After mixing 50～60 seconds, drop into white carbon black and carbon black; Mixing 50-60 drops into other Synergist S-421 95 after second, clean after mixing 80 seconds again, more mixing 50-60 second, carries out afterwards binder removal when temperature is lower than 110 ℃;
(3) the 3rd steps were opened refining: the A refining glue (not adding vulcanizing agent) that mixer mixing is finished throw in carry out in the mill mixing, slice blanking after mill turned refining 110～130 seconds;
(4) the 4th steps cooling: film is cooled to below 35 ℃ at cooler;
(5) the 5th step rewindings: cooled film is collected by travelling belt.
After rubber compounding is finished by the direct slice of mill, because the temperature of film is higher, therefore regather after needing the process cooler that it is cooled off, the type of cooling that adopts among the present invention is air-cooled, adopts air cooling way that film is cooled off, avoided in the situation of water-cooled film to sneak into moisture content and cause the film surface to produce bubble, affect the sizing material quality, avoid the generation of substandard products, cause the waste of sizing material, guarantee quality product, reduce production costs.
Embodiment 2
All the other are identical with embodiment 1, difference is, this electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 32%, carbon black 2%, white carbon black 25%, tackifying resin 2%, paraffin oil 11%, Microcrystalline Wax 0.05%, processing aid 1% and auxiliary agent 26.95%.
Embodiment 3
All the other are identical with embodiment 1, difference is, this electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 26%, carbon black 1.2%, white carbon black 21%, tackifying resin 1.2%, paraffin oil 9.2%, Microcrystalline Wax 0.025%, processing aid 0.6% and auxiliary agent 40.775%.
Embodiment 4
All the other are identical with embodiment 1, difference is, this electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 30%, carbon black 1.9%, white carbon black 24%, tackifying resin 1.8%, paraffin oil 10.5%, Microcrystalline Wax 0.045%, processing aid 0.9% and auxiliary agent 30.855%.
Embodiment 5
All the other are identical with embodiment 1, difference is, this electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 27%, carbon black 1.4%, white carbon black 22%, tackifying resin 1.4%, paraffin oil 9.8 %, Microcrystalline Wax 0.03%, processing aid 0.7% and auxiliary agent 37.45%.
Embodiment 6
All the other are identical with embodiment 1, difference is, this electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 29%, carbon black 1.7%, white carbon black 23.5%, tackifying resin 1.7%, paraffin oil 10.3%, Microcrystalline Wax 0.04%, processing aid 0.8% and auxiliary agent 32.85%.
Embodiment 7
All the other are identical with embodiment 1, difference is, this electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 28.5%, carbon black 1.5%, white carbon black 22.5%, tackifying resin 1.5%, paraffin oil 10%, Microcrystalline Wax 0.035%, processing aid 0.75% and auxiliary agent 35.215%.
This proportioning is optimal proportion of the present invention, adopts the proportioning mode of the present embodiment, improved the resistance to air loss of bladders rubber, simultaneously accelerate when mixing vulcanization rate, bond properties better and the work-ing life of improving bladders, reduce use cost.
Except above-mentioned several embodiment, the shared weight percent of terpolymer EP rubber can also be 27.5%, 28%, 31% etc.; The shared weight percent of carbon black can also be 1.8%, 1.6%, 1.3% etc.; The shared weight percent of white carbon black can also be 23%, 21.5%, 24.5% etc.; The shared weight percent of tackifying resin can also be 1.6%, 1.3%, 1.9% etc.; Paraffin oil 9.5%, 9.7%, 10,7% etc.; Microcrystalline Wax 0.028%, 0.033%, 0.039% etc., the ratio that each component is shared and proportioning mode thereof all are determined on a case-by-case basis, and do not limit at this.
Electro-insulating rubber disclosed by the invention by adopting terpolymer EP rubber as the body of rubber material, guarantees that product has good insulating property and good ozone-resistant aging property, increases the work-ing life of product, reduces use cost; Ozone resistance has further been guaranteed in the use of a small amount of Microcrystalline Wax, and because the usage quantity of Microcrystalline Wax is less, has also avoided simultaneously glue bond decline; In addition, because carbon black has electroconductibility, by adopting white carbon black and tackifying resin mixture, reduce the decline of the insulating property aspect of bringing because of the use carbon black.And carbon black adopts N774, N774 is semi-reinforcing hydrocarbon black, given sizing material high elongation rate, low-heat-generation, snappiness and good ageing-resistant performance etc., increases the work-ing life of product, reduces production costs.
Simultaneously, the tenderizer that uses in this rubber compounding is the environment-friendly type paraffin oil, has guaranteed that further this sizing material can satisfy the requirement of environmental protection aspect.
In addition, the type of cooling of employing is air-cooled, adopts air cooling way that film is cooled off, avoid in the situation of water-cooled film to sneak into moisture content and cause the film surface to produce bubble, affected the sizing material quality, avoided the generation of substandard products, cause the waste of sizing material, guarantee quality product, reduce production costs.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, in other embodiments realization.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. electro-insulating rubber, be applied on the lever of power tool, it is characterized in that, described electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 25%-32%, carbon black 1%-2%, white carbon black 20%-25%, tackifying resin 1%-2%, tenderizer 9%-11%, Microcrystalline Wax 0.02%-0.05%.
2. electro-insulating rubber according to claim 1, it is characterized in that, described electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 26%-30%, carbon black 1.2%-1.9%, white carbon black 21%-24%, tackifying resin 1.2%-1.8%, tenderizer 9.2%-10.5%, Microcrystalline Wax 0.025%-0.045%.
3. electro-insulating rubber according to claim 2, it is characterized in that, described electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 27%-29%, carbon black 1.4%-1.7%, white carbon black 22%-23.5%, tackifying resin 1.4%-1.7%, tenderizer 9.8 %-10.3%, Microcrystalline Wax 0.03%-0.04%.
4. electro-insulating rubber according to claim 3, it is characterized in that, described electro-insulating rubber comprises the component of following weight percent: terpolymer EP rubber 28.5%, carbon black 1.5%, white carbon black 22.5%, tackifying resin 1.5%, tenderizer 10%, Microcrystalline Wax 0.035%.
5. each described electro-insulating rubber is characterized in that according to claim 1-4, and described carbon black is N774.
6. each described electro-insulating rubber is characterized in that according to claim 1-4, and described tenderizer is paraffin oil.
7. the preparation method of an electro-insulating rubber is characterized in that, concrete step is as follows:
(1) the first step batching: according to the proportioning of claim 1, will place after the terpolymer EP rubber weighing; To be combined together after tackifying resin, the Microcrystalline Wax weighing; Carbon black adopts artificial batching; White carbon black and tenderizer adopt upper subsidiary engine to prepare burden;
(2) second step banburying: at first in the time of 50 ℃～60 ℃, terpolymer EP rubber is dropped in the Banbury mixer, in Banbury mixer, throw in tackifying resin, Microcrystalline Wax simultaneously; After mixing 50～60 seconds, drop into white carbon black and carbon black machine tenderizer; Mixing 50-60 drops into other Synergist S-421 95 after second, clean after mixing 80 seconds again, more mixing 50-60 second, carries out afterwards binder removal when temperature is lower than 110 ℃;
(3) the 3rd steps were opened refining: the A refining glue (not adding vulcanizing agent) that mixer mixing is finished throw in carry out in the mill mixing, slice blanking after mill turned refining 110～130 seconds;
(4) the 4th steps cooling: film is cooled to below 35 ℃ at cooler;
(5) the 5th step rewindings: cooled film is collected by travelling belt.
8. the preparation method of electro-insulating rubber according to claim 7 is characterized in that, the type of cooling is air-cooled.
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| CN103481628A (en) * | 2013-09-22 | 2014-01-01 | 苏州市湘园特种精细化工有限公司 | Processing technique for insulating sheet rubber |
| CN103481519A (en) * | 2013-09-22 | 2014-01-01 | 苏州市湘园特种精细化工有限公司 | Processing technique for insulating sheet rubber |
| CN103554573A (en) * | 2013-10-29 | 2014-02-05 | 绿宝电缆（集团）有限公司 | Ozone-proof, wear-resistant and flame-retardant modified nitrile rubber cable material |
| CN103613858A (en) * | 2013-11-08 | 2014-03-05 | 苏州新颖新材料科技股份有限公司 | Processing technique of insulating plant-derived bacteriostatic thin film |
| CN109897287A (en) * | 2019-01-30 | 2019-06-18 | 盖茨优霓塔传动系统(苏州)有限公司 | Flat-toothed belt |
| CN114213769A (en) * | 2021-12-17 | 2022-03-22 | 山东泰开电器绝缘有限公司 | High-resistance O-shaped sealing ring and manufacturing process thereof |
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| CN103554573B (en) * | 2013-10-29 | 2015-12-30 | 绿宝电缆（集团）有限公司 | A kind of abrasion resistant fire blocking of resistance to ozone modified butadiene acrylonitrile rubber CABLE MATERIALS |
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| CN114213769A (en) * | 2021-12-17 | 2022-03-22 | 山东泰开电器绝缘有限公司 | High-resistance O-shaped sealing ring and manufacturing process thereof |
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