CN1340561A - Thermoplastic elastomer composition, its preparation method and rubber roller formed from the said composition - Google Patents
Thermoplastic elastomer composition, its preparation method and rubber roller formed from the said composition Download PDFInfo
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- CN1340561A CN1340561A CN 01123666 CN01123666A CN1340561A CN 1340561 A CN1340561 A CN 1340561A CN 01123666 CN01123666 CN 01123666 CN 01123666 A CN01123666 A CN 01123666A CN 1340561 A CN1340561 A CN 1340561A
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Abstract
The invention can prevent oil bleeding from a rubber roller and a void (white-off) in the printed surface when it is used as a paper feeding roller. The thermoplastic elastomer composition is obtained by compounding together a crosslinking agent, a rubber (A) crosslinkable by the crosslinking agent and a thermoplastic elastomer (B) uncrosslinkable by the crosslinking agent or a blend of the thermoplastic elastomer (B) uncrosslinkable by the crosslinking agent with a thermoplastic resin so that the ratio of (B) to (A) is 4>=B/A>=1/4 thereby dynamically crosslinking the rubber (A) by the crosslinking agent to be dispersed in the thermoplastic elastomer (B). The composition is designed so that it contains none or a little amount of a softening agent comprising oil to set the acetone extract thereof not lower than 0% but not higher than 20%. The rubber roller for feeding a paper is made of the elastomer composition.
Description
Technical field
The rubber rollers that the present invention relates to composition for thermoplastic elastomer, its preparation method and make by this thermoplastic elastomer.Can not stay oil stain with the rubber rollers surface when being particularly related to printing, and can prevent the rubber rollers of printing surface decolouring from paper feeding.
Background technology
Rubber rollers generally is used to the paper feeder of ink-jet printer, laser printer, xerographic printer, plain paper facsimile, Automatic Teller Machine (ATM) etc.Because rubber rollers must be loaded onto in paper feeding and film and separate the paper that sent and film etc., so require it to possess good flexibility and high abrasion resistance.
In addition, when the product that printing photographic etc. is had relatively high expectations to image quality, if to be surface roughness less and have the paper of color for printing, then decolouring (bleaching) appears in part sometimes that contact with rubber rollers during paper feeding
Phenomenon, this just becomes a problem.Its reason is that when printing paper feeding rubber rollers can stay oil stain on printing, when printing like this and the oil of rubber rollers contact part can come off, so its coloring degree is poorer than the part that does not contact with roller.
Therefore, the oil mass of using as tenderizer for the composition that prevents from the generation of above-mentioned decolouring (bleaching) phenomenon, will reduce to be used for rubber rollers as far as possible, or adopt the composition that can obtain soft that adds oil to make the paper feeding rubber rollers.
The process for preparation of thermoplastic elastomer that adopts as making above-mentioned rubber rollers, patent provides following method No. 3027429, promptly utilize double-shafted extruder directly in 100 weight part clam shape EPDM rubber, polyolefin-based resins and rubber, to add the tenderizer of 20 weight parts～200 weight parts, in the presence of linking agent, carry out dynamic thermal treatment then and make the method for thermoplastic elastomer.
Generally, require the paper feeding rubber rollers to possess higher wear resistant, so this rubber rollers adopts the vulcanized rubber of EPDM rubber (Ethylene-Propylene-Diene Monomer (EPDM)), NR (natural rubber) and IIR (isobutylene-isoprene copolymer rubber) etc. to make.In this case, possess suitable soft, must add a large amount of oil in order to make the paper feeding rubber rollers.Therefore, to effectively prevent the bleaching phenomenon that above-mentioned print surface occurs more, be difficult to reduce the addition of oil.
On the other hand, when making the paper feeding rubber rollers with thermoplastic elastomer, though non-refuelling can obtain soft, have the thermotolerance problem in this case, can not obtain can practical paper feeding rubber rollers.
That is,, one of problem of the process for preparation of thermoplastic elastomer that above-mentioned patent discloses for No. 3027429 mixed the method that a large amount of tenderizers can also stably make thermoplastic elastomer even providing.But, this patent has only disclosed rubber, polyolefin-based resins and a large amount of tenderizer has been dropped into double-shafted extruder simultaneously, in the presence of linking agent, carry out dynamic thermal treatment then, obtain the method for compositions of thermoplastic elastomer, to not adding tenderizer or adding tenderizer on a small quantity and do not have any announcement and hint.
The invention solves the addition that the problems referred to above make non-refuelling or significantly reduce oil becomes possibility, its objective is can prevent from when being provided at the paper feeding of paper feeding rubber rollers to reach the rubber rollers of being made by said composition with the composition for thermoplastic elastomer of the decolouring (bleaching) of rubber rollers contact part, the preparation method of said composition.
The content of invention
In order to address the above problem, claim 1 of the present invention provides composition for thermoplastic elastomer, said composition is by linking agent, by the crosslinked rubber of linking agent (A), be not crosslinked the crosslinked thermoplastic elastomer of agent (B) or be not crosslinked the mixture of crosslinked thermoplastic elastomer of agent (B) and thermoplastic resin, ratio according to 4 〉=B/A 〉=1/4, utilize above-mentioned linking agent to make rubber (A) that dynamic crosslinking take place and be dispersed in composition for thermoplastic elastomer in the above-mentioned thermoplastic elastomer (B), the feature of said composition is, tenderizer or the tenderizer content formed of oil-containing is not less, and the acetone extract component of said composition is set in more than 0% below 20%.
As mentioned above, in the composition for thermoplastic elastomer of the present invention, because above-mentioned rubber (A) and thermoplastic elastomer (B) mix according to a certain percentage, even so because the acetone extract component in the said composition more than 0% below 20% and reduce under the situation of oily addition, also can provide the composition for thermoplastic elastomer that can obtain good paper feeding rubber rollers.
Above-mentioned linking agent can adopt known linking agent, for example, and as the reactive resol of resin cross-linking agent, terpolycyantoamino-formaldehyde resin, triazine formal dehyde condensate, HMMM resin etc.The object lesson of resol comprises aldehydes reaction such as phenolic such as phenol, alkylphenol, cresols, xylenol, Resorcinol and formaldehyde, acetaldehyde, furfural and the various resol of synthetic.
In addition, also can use Sulfur and vulcanization accelerator, or with the nonreactive superoxide of thermoplastic elastomer (B).
The proportional quantity of resin cross-linking agent can be done suitably to adjust according to used rubber and elastomeric kind etc., and generally corresponding to 100 parts by weight of rubber, its proportional quantity is being advisable below 25 weight parts more than 1 weight part, and good especially is below 15 weight parts more than 5 weight parts.
Be preferably EPDM (Ethylene-Propylene-Diene Monomer (EPDM)) or be major constituent and mixtures other rubber with EPDM by the crosslinked rubber of above-mentioned linking agent (A).
EPDM content in the rubber of the present invention (A) is preferably 100%.When EPDM and other rubber mix, the ratio that EPDM accounts for whole rubber more than 50 weight parts, is more preferably more than 80 weight parts more fortunately.Its reason is that the main chain of EPDM is made of saturated hydrocarbons, owing to do not contain two keys in the main chain, even so be exposed to for a long time in the high-concentrated ozone atmosphere gas or under environment such as illumination, also be difficult to the fracture of trigger molecule main chain, therefore can improve the finished product, as the weathering resistance of roll etc.
Rubber (A) is except EPDM, also comprise isoprene-isobutylene rubber, divinyl rubber, synthetic polyisoprene, styrene butadiene ribber (SBR), neoprene, natural rubber (NR), 1,2-polyhutadiene, acrylonitrile-butadiene rubber, ethylene propylene rubber, acrylic rubber, chlorosulfonated polyethylene etc.
Above-mentioned thermoplastic elastomer (B) can use known thermoplastic elastomer, for example, be preferably styrene-butadiene-styrene multipolymer (SBS), styrene-isoprene-styrene copolymer-(SIS), styrene-ethylene/butylene-styrene multipolymer (SEBS), styrene-ethylene/propylene-styrene multipolymer (SEPS), styrene-ethylene-ethylene/propene-styrol copolymer styrenic elastomericss such as (SEEPS), chlorinatedpolyethylene, the polyvinyl chloride-base elastomerics, olefin type elastomer, the polyurethanes elastomerics, ester class elastomerics, the amides elastomerics, ionomer, ethylene-propylene acetoacetic ester resin (EEA), ethene-vinyl acetate copolymer (EVA) etc.
When above-mentioned thermoplastic elastomer and thermoplastic resin mix, this thermoplastic resin can use known resin, for example, polypropylene (PP), polyethylene olefine kind resins such as (PE), polystyrene (PS), polyethylene terephthalate (PET), PBT and nylon etc.
The mixture of above-mentioned thermoplastic elastomer and thermoplastic resin still is elastomerics after being preferably in mixing.Its reason is rubber to be disperseed and the hardness of the final composition for thermoplastic elastomer that obtains becomes lower.
In order to adapt to used elastomerics and resin, the blending ratio of above-mentioned thermoplastic elastomer and above-mentioned thermoplastic resin can determine suitably that corresponding to the above-mentioned thermoplastic elastomer of 100 weight parts, the consumption of above-mentioned thermoplastic resin is below 100 weight parts more than 1 weight part.
Its reason is, if be less than 1 weight part, then can't manifest the mixed effect with resin, if surpass 100 weight parts, then can not obtain elastomerics.
As mentioned above, by the crosslinked rubber of linking agent (A) be not crosslinked the crosslinked thermoplastic elastomer of agent (B) or not by the crosslinked thermoplastic elastomer of this linking agent and the mixture of thermoplastic resin, according to the mixed of 4 〉=B/A 〉=1/4.Its reason is, if B/A greater than 4, then wear resistant descends, frictional coefficient diminishes.If B/A less than 1/4, then mixes difficulty.In addition, the numerical value unit of A and B goes out above-mentioned B/A value with listed as parts by weight, and A and B value have been removed oily value under the interpolation oil condition.
The acetone extract component of composition for thermoplastic elastomer of the present invention is more than 0% below 20%.This is because the oil mass of acetone extract component and interpolation is relevant, and when oily addition is 0 or more after a little while, the acetone extract amount is more than 0% below 20% as mentioned above.The acetone extract component better is more than 0% below 10%, is more preferably more than 0% below 5%.
Used oil can use commercially available petroleum-type tenderizer or softening agent arbitrarily.Used tenderizer comprises the synthetic oil that aromatics, naphthenic, paraffin class mineral oil and hydro carbons oligopolymer etc. form, or treated oil.Softening agent comprises phthalic acid ester class, adipic acid ester class, sebacic acid ester, phosphoric acid ester, polyethers and polyester etc.
Consider that by following reason the rubber cross method is preferably the resin crosslinks method.That is, adopt resin cross-linking agent to carry out resin crosslinks, resin cross-linking agent is to wait the synthetic resins that makes rubber generation crosslinking reaction by heating.When Sulfur and Sulfur accelerator combination, because frosting phenomenon can not appear, so fine.When particularly being resin cross-linking agent, can improve the paper feeding performance with resol.
Other resin cross-linking agents comprise terpolycyantoamino-formaldehyde resin, triazine formal dehyde condensate, HMMM resin etc.Wherein good especially is resol.The object lesson of resol comprises aldehydes reaction such as phenolic such as phenol, alkylphenol, cresols, xylenol, Resorcinol and formaldehyde, acetaldehyde, furfural and the various resol of synthetic.Connected the alkylphenol of alkyl and the alkyl phenolic formaldehyde resin that formaldehyde reaction obtains in the ortho position of good especially is benzene or the contraposition, this is because not only the intermiscibility of it and rubber is better, and reactive good, and the time that crosslinking reaction begins also early.Generally, the carbonatoms of the alkyl of alkylphenol formaldehyde resin is 1～10, is specially methyl, ethyl, propyl group, butyl etc.In addition, the addition condensation reaction of sulfuration p-tert-butylphenol and aldehydes and the modified alkylbenzene phenol resins, the alkyl phenol sulfide resin that obtain also can be used as resin cross-linking agent and use.The proportional quantity of resin cross-linking agent is, corresponding to 100 parts by weight of rubber, more fortunately below above 20 weight parts of 1 weight part, better below 15 weight parts more than 8 weight parts.
Dynamic crosslinking of the present invention can carry out in the presence of halogens such as chlorine, bromine, fluorine and iodine.There is halogen to exist when carrying out dynamic crosslinking and can passes through to use, or in elastic composition, sneak into the material that halogen can be provided by halogenated resin cross-linking agent.By halogenated resin cross-linking agent is the halogenide of above-mentioned each addition condensation type resin.Wherein, the aldehyde unit of resol and at least 1 the halogenation resol that halogen atom is formed by connecting, particularly halogenated alkyl phenol formaldehyde resin because and rubber possess good intermiscibility, and reactive good, the time that crosslinking reaction begins is morning, so good especially.
Can provide the material of halogen to comprise tin chloride class, iron(ic) chloride and cupric chlorides etc. such as tin chloride.Halogenated resin is a chlorinatedpolyethylene etc.These can provide the material of halogen to use separately, also can more than 2 kinds and use.
Also can adopt crosslinking coagent (promoting agent) in order to carry out crosslinking reaction better, crosslinking coagent can use metal oxide, and good especially is zinc oxide and zinc carbonate.
The hardness of composition for thermoplastic elastomer of the present invention (hardness of the rubber rollers that is formed by this composition for thermoplastic elastomer) is determined at below 50 according to the A type hardness tester shape of JIS6301, better is 45～15, is more preferably in 40～20 scope.If greater than 50, the transporting power deficiency of the rubber rollers that then makes particularly is difficult to transport OHP paper to hardness in Shore A.On the other hand, if Xiao A hardness less than 50, even then rubber rollers is pressed attached paper and film with less pressure, also can make rubber rollers fully be out of shape, obtain bigger and contact area paper and film.
As mentioned above, because it is considerably less not add oil or oily addition in the composition for thermoplastic elastomer of the present invention, so, adopt preparation method commonly used to cause easily and disperse phenomenon bad and that rubber splits.
Therefore, the present invention also provides above-mentioned and has not refueled or the preparation method of the composition for thermoplastic elastomer that oily addition is considerably less, this preparation method's feature is, mixture, the linking agent of above-mentioned rubber (A), thermoplastic elastomer (B) or thermoplastic elastomer and thermoplastic resin dropped in the mixing machine.Before mixing, temperature is controlled at below the fusing point of linking agent always.During mixing, temperature is risen to more than the fusing point of above-mentioned thermoplastic elastomer (B), make rubber (A), thermoplastic elastomer (B) or thermoplastic elastomer and thermoplastic resin, linking agent fusion, in mixed rubber (A), make it that dynamic crosslinking takes place and be dispersed in the thermoplastic elastomer (B).
Specifically, drop into the mixture of above-mentioned rubber (A), thermoplastic elastomer (B) or thermoplastic elastomer (B) and thermoplastic resin simultaneously from the same input port of mixing machine, above-mentioned linking agent is dropped in the input port that meanwhile is arranged on the another location before mix.
In the process of transporting, above-mentioned mixing machine temperature inside is controlled at below the fusing point of above-mentioned linking agent, temperature is risen to more than the fusing point of above-mentioned thermoplastic elastomer, make rubber (A), thermoplastic elastomer (B) or thermoplastic elastomer and thermoplastic resin, linking agent fusion, in mixed rubber (A), make it that dynamic crosslinking takes place and be dispersed in the thermoplastic elastomer (B).
The present invention makes rubber rollers by above-mentioned oiling or the considerably less composition for thermoplastic elastomer of oily addition.
For example, utilize following method to make rubber rollers of the present invention.
That is, the raw material that temperature is controlled at below the linking agent fusing point drops in the rubber mix devices such as double-shafted extruder, open type roll, banbury mixers, kneader.The input port of linking agent is different with other raw materials, and linking agent is dropped in the input port from other setting when mixing is about to begin.Utilize this method can solve the temperature that in the feedstock delivery process, makes linking agent and rise to it more than fusing point, and linking agent is attached to the problem of transporting on the raw material.During mixing,, make the fusion simultaneously of (A), (B) and linking agent, and carry out the mixing about 1～20 minute simultaneously and after making rubber generation dynamic crosslinking, push with the rubber extruded machine in the down heating of (B) temperature (160 ℃～200 ℃) more than the fusing point.Then, the rubber blend composition that extrudes is carried out granulation, with injection machine particle is carried out injection forming again, make it be configured as tubulose.After the surface of this molding ground, size was sheared according to the rules, obtained rubber rollers.
In addition, do not use injection machine, but adopt resin can be pressed into tubulose yet, again it is sheared, can make rubber rollers yet with the single shaft extrusion machine.
Rubber rollers is cylindric, and its wall thickness is 1mm～8mm, is preferably 2mm～5mm, can take into account the intensity of rubber rollers like this.If wall is thin excessively, even then rubber rollers is out of shape the bigger contact area that also is difficult to formation and paper.On the other hand, if wall is blocked up,, will make rubber rollers crimping paper like this and the device that adopts maximizes then for making roller distortion must increase the pressure of rubber rollers to paper.
In the rubber rollers of the invention described above since add oil or oily addition considerably less, so can not stay oil stain during printing, and can prevent the printing surface decolouring from the rubber rollers surface.
The specific embodiment
Below, embodiments of the present invention are described.
The thermoplastic elastomer (TPE) that obtains according to following proportioning is configured as cylindric roller, and empty position is pressed into axle therein Core, or with bonding both the fixing paper feeding of the present invention rubber rollers that just obtain of adhesive.
Thermoplastic elastomer (TPE) composition in the present embodiment is by resin crosslinking agent (reactive phenolic resinoid (alkyl phenol formaldehyde resin)), with the crosslinked EPDM of this crosslinking agent (A), be not crosslinked the crosslinked hydrogenation of agent The compositions of mixtures of styrene analog thermoplastic elastomer (B) and olefines resin (polypropylene). In addition, also can Interpolation is as the zinc oxide of crosslinking coagent.
Above-mentioned rubber (A) and thermoplastic elastomer (TPE) (B) mix according to the ratio of 4 〉=B/A 〉=1/4. And, rubber (A) by the crosslinking agent dynamic crosslinking, it is dispersed in the thermoplastic elastomer (TPE) (B).
Acetone extract component in the above-mentioned thermoplastic elastomer (TPE) composition is more than 0% below 20%. Above-mentioned rubber By crosslinking agent generation dynamic crosslinking, rubber is disperseed.
Be EPDM by the crosslinked rubber of above-mentioned crosslinking agent, in the situation of refueling, in kneader, add smart Liquefaction.
The rubber roller that this enforcement takes place makes by the following method.
Drop into simultaneously EPDM rubber, hydrogenation styrene analog thermoplastic elastomer in the same input port of mixer And polypropylene, and they are transported to mix the position, the input port that arranges in addition before mixing the position is dropped into and is handed over Connection agent and crosslinking coagent. Before mixing the position, unit temp is remained on below the crosslinking agent fusing point namely 40～100 ℃ temperature under, under 160 ℃～200 ℃ temperature, heat mixing the position, make EPDM rubber, The simultaneously melting of hydrogenation styrene analog thermoplastic elastomer and polypropylene and crosslinking agent.
Under this state, mixed 1～20 minute, and made rubber generation dynamic crosslinking, be dispersed in thermoplasticity at rubber Extruding after in the elastomer. Then, with the rubber blend composition granulation shape that extrudes, use again injection moulding Machine carries out injection moulding to particle to be processed, and obtains tube. Then, grind the tube surface, shear again, The acquisition external diameter is that 32mm, internal diameter are 28mm, widely are the rubber roller of 15mm.
Embodiment
As shown in table 1, according to the proportioning extrusion embodiment 1～5 of table 1 record and the composition of comparative example, After the granulating, injection moulding is roller shape (circular tube shaped), shears then, and the acquisition external diameter is that 32mm, internal diameter are 28mm, wide be the rubber roller of 15mm.
Table 1
| (A) E505A | (B) セプトン2063 | PP | Acetone extract component % | Hardness | Slivering (visual) | The OHP paper feeding | |
| Embodiment 1 oily addition % | 100 0 | 100 0 | 0 | 45 | ◎ | Good | |
| Embodiment 2 oily addition % | 10 5 | 100 6 | 5 | 40 | ◎ | Good | |
| Embodiment 3 oily addition % | 100 12 | 100 12 | 10 | 36 | ○ | Good | |
| Embodiment 4 oily addition % | 100 24 | 100 24 | 20 | 31 | ○ | Good | |
| Embodiment 5 oily addition % | 100 11 | 100 11 | 10 | 10 | 44 | ○ | Good |
| Comparative example 1 oily addition % | 100 30 | 100 30 | 23 | 29 | × | Good |
The numerical value unit of each proportioning in the table is weight portion. In addition, be called for short E505A and represent EPDM (Sumitomo Length of schooling, エ ス プ レ Application 505A). Except embodiment 1 does not add the example of oil, other all be Added oily example in the kneader, each addition is as shown in the bracket, with corresponding to 100 weight portion rubber Or elastomeric weight portion meter. Used oil is paraffin oil (the ダ イ ア Na essence that Idemitsu Kosen Co., Ltd. produces Liquefaction Pw-380) (annotate: the softening agent that adds in the elastomer also is this oil) in addition, the セ プ ト Application in the table The hydrogenation phenylethylene elastomer that the 2063 expression Network ラ レ of Co., Ltd. produce. PP represents Japanese ボ リ ケ system ノ バ Network PP BC6 processed.
In table, the proportioning of record, also can use simultaneously 12 weight portions in each embodiment and the comparative example Reactive phenolic resins (ridge, field chemistry Star キ ロ processed-Le 250-III) and 5 weight portions as crosslinking agent are done Zinc oxide (No. 1, Mitsu Mining ﹠ Smelting Co., Ltd's Preparing of Zinc Oxide) for crosslinking coagent.
The rubber roller makes by the following method.
In twin shaft extruder HTM38 (ア イ ベ Star Network Co., Ltd. system), drop into EPDM rubber, hydrogenation benzene second Alkene class thermoplastic elastomer (TPE) and other additives are transported to mixed when temperature is remained on 40～100 ℃ Close the position, when mixing will begin at once, drop into crosslinking agent and crosslinking coagent. After the input, 160 ℃～200 ℃ temperature under heat and mixed 1～20 minute, push after making rubber generation dynamic crosslinking. Then, Make the rubber blend composition granulating of extrusion, with the injection moulding machine particle is carried out injection moulding again, obtain Tube. Then, the tube surface is ground, shear, the acquisition external diameter is that 32mm, internal diameter are 28mm, wide be the D shear roller of 15mm.
Embodiment 1～embodiment 5
Among embodiment 1～embodiment 4, according to ratio mixed cross-linker (the reactive phenol of 4 〉=B/A 〉=1/4 Urea formaldehyde), (A) by the crosslinked rubber of crosslinking agent (EPDM) and (B) is not crosslinked the crosslinked thermoplasticity bullet of agent Gonosome (セ プ ト Application 2063). Among the embodiment 5 and 6, according to the ratio mixed cross-linker of 4 〉=B/A 〉=1/4 (reactive phenolic resins), above-mentioned (A), be not crosslinked the crosslinked thermoplastic elastomer (TPE) of agent (セ プ ト Application 2063) And the mixture of thermoplastic resin (PP).
Acetone extract component among embodiment 1～embodiment 5 is all more than the O% below 20%.
In addition, the oily addition in the comparative example is 23%, and the acetone extract component is greater than 20%.
The rubber roller of above-described embodiment 1～embodiment 5, comparative example has all carried out OHP with the paper feeding performance and has had The test of no slivering and assessment.
(OHP tests with paper feeding)
Under the condition of 23 ℃ of temperature and relative humidity 55%, the rubber roller of each embodiment and comparative example is made Feeding-in roll be contained on the ink-jet printer PM-770C of セ イ コ-エ プ ソ Application, again with OHP paper using (セ イ The special-purpose OHP paper of コ-エ プ ソ Application ink-jet printer processed) be contained on the feeder, press the printing button feeding-in roll is turned to Moving beginning paper feeding. Make the repeatedly paper feeding 10 times of each rubber roller, each 10, observe the paper feeding feelings of OHP paper using Condition.
(slivering assessment test)
The test that utilizes following methods to have or not slivering to produce. Each rubber roller table at embodiment and comparative example After face is sprayed alcohol, place them in 60 ℃ interior 1 evening of baking oven. In 23 ℃ of temperature and relative humidity 55% Condition under, the feeding-in roll that the rubber roller of each embodiment and comparative example is made is contained in セ イ コ-エ プ ソ Application Ink-jet printer PM-770C on, again with OHP paper using (セ イ コ-エ プ ソ Application ink-jet printer special use processed OHP paper) be contained on the feeder, print green half-tone. According to following standard visualization at this moment at last, Whether there is the decolouring phenomenon of rubber roller contact portion to take place.
◎: do not have decolouring
Zero: the decolouring phenomenon is not obvious
*: decolouring appears
The acetone extract component goes out in above-mentioned rubber roller slivering assessment test greater than the rubber roller of 20% comparative example The phenomenon of now decolouring.
On the other hand, the acetone extract component is respectively 0% and 5% embodiment 1 and 2 rubber roller is upper State appearance decolouring in the rubber roller slivering assessment test, and the extraordinary rubber roller of OHP paper feeding situation. Implement Although example 3,4 and 5 rubber roller the decolouring phenomenon occurs in above-mentioned rubber roller slivering assessment test, not Obviously, their OHP paper feeding is all right, is to be suitable for practical rubber roller.
As mentioned above, it is considerably less not add oil or oily addition among the present invention, can obtain soft, heat-resisting The thermoplastic elastomer (TPE) composition that property is good.
The rubber roller that above-mentioned thermoplastic elastomer (TPE) composition consists of is for must be at the same fashionable dress of paper feeding and film Upper and to separate the paper that send and the ink-jet printer of film etc. very useful. Particularly at advanced wax machine-glazed paper, light When printing on quick paper and the colored OHP paper using, because it is considerably less not add oil or oily addition, so The roller surface can not stay oil stain, therefore, can prevent the generation because of the decolouring phenomenon of oil generation.
In addition, the hardness of rubber roller is below Shore A50, and this rubber roller not only possesses the Anti-fade effect, also Possess the OHP paper using and transport all right advantage.
Claims (10)
1. composition for thermoplastic elastomer, described composition is by linking agent, by the crosslinked rubber of described linking agent (A), be not crosslinked the crosslinked thermoplastic elastomer of agent (B) or be not crosslinked the mixture of crosslinked thermoplastic elastomer of agent (B) and thermoplastic resin, ratio according to 4 〉=B/A 〉=1/4, utilize described linking agent to make rubber (A) that dynamic crosslinking take place and be dispersed in composition for thermoplastic elastomer in the described thermoplastic elastomer (B), it is characterized in that, described composition not the tenderizer formed of oil-containing or tenderizer content seldom, and acetone extract component wherein is set in more than 0% below 20%.
2. composition for thermoplastic elastomer as claimed in claim 1, wherein, the resin cross-linking agent that described linking agent adopts reactive resol, terpolycyantoamino-formaldehyde resin, triazine formal dehyde condensate, HMMM resin to form, corresponding to 100 parts by weight of rubber, the proportional quantity of described resin cross-linking agent is below 25 weight parts more than 1 weight part.
3. composition for thermoplastic elastomer as claimed in claim 2, wherein, used crosslinking coagent is the metal oxide that contains zinc oxide, zinc carbonate.
4. composition for thermoplastic elastomer as claimed in claim 1, wherein, what described rubber (A) used is EPDM (Ethylene-Propylene-Diene Monomer (EPDM)), or be the mixture of other rubber of major constituent with EPDM, the ratio that described mixture accounts for whole rubber in EPDM more than 50 weight parts, what described thermoplastic elastomer (B) used is hydrogenation styrenic elastomerics, that use with described thermoplastic elastomer (B) blended thermoplastic resin is polypropylene (PP), polyethylene olefine kind resins such as (PE), polystyrene (PS), polyethylene terephthalate (PET), PBT or nylon.
5. the preparation method of the described composition for thermoplastic elastomer of claim 1, it is characterized in that, with above-mentioned rubber (A), the mixture of thermoplastic elastomer (B) or thermoplastic elastomer and thermoplastic resin, linking agent drops in the mixing machine, before mixing, temperature is controlled at below the fusing point of linking agent always, during mixing temperature is risen to more than the fusing point of described thermoplastic elastomer (B), make rubber (A), thermoplastic elastomer (B) or thermoplastic elastomer and thermoplastic resin, the linking agent fusion makes it that dynamic crosslinking takes place in mixed rubber (A) and is dispersed in the thermoplastic elastomer (B).
6. the preparation method of composition for thermoplastic elastomer as claimed in claim 5, its feature also is, drop into the mixture of above-mentioned rubber (A), thermoplastic elastomer (B) or thermoplastic elastomer (B) and thermoplastic resin simultaneously from the same input port of described mixing machine, meanwhile described linking agent is dropped in the input port that is arranged on the another location before mix, in the process of transporting, described mixing machine temperature inside is controlled at below the fusing point of described linking agent, temperature is risen to more than the fusing point of described thermoplastic elastomer.
7. the preparation method of composition for thermoplastic elastomer as claimed in claim 6, its feature also is, carry out before the described mixing temperature being remained on 40～100 ℃, under 160 ℃～200 ℃ temperature, heat when described mixing is about to begin, mix and push after dynamic crosslinking is taken place.
8. rubber rollers, described roller makes by making the described composition for thermoplastic elastomer of claim 1 be configured as the roller shape.
9. rubber rollers as claimed in claim 8, the hardness of described rubber rollers in Shore A below 50.
10. rubber rollers as claimed in claim 8, it is considerably less wherein not add oil or oily addition, can be from rubber rollers surface leakage of oil during printing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000259231A JP2002069244A (en) | 2000-08-29 | 2000-08-29 | Thermoplastic elastomer composition, manufacturing method of the same and rubber roller composed of the same |
| JP259231/2000 | 2000-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1340561A true CN1340561A (en) | 2002-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01123666 Pending CN1340561A (en) | 2000-08-29 | 2001-08-29 | Thermoplastic elastomer composition, its preparation method and rubber roller formed from the said composition |
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| JP (1) | JP2002069244A (en) |
| CN (1) | CN1340561A (en) |
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| CN100420710C (en) * | 2003-05-07 | 2008-09-24 | 住友橡胶工业株式会社 | Elastomer composition and rubber roller |
| CN103694555A (en) * | 2013-11-29 | 2014-04-02 | 乐陵市白鸽食品机械有限公司 | Forming double-roller of round steamed bun forming machine |
| CN106117824A (en) * | 2016-07-25 | 2016-11-16 | 安徽德源电缆集团有限公司 | A kind of preparation method of ethylene propylene rubber insulated electric cable with silicon rubber sheath material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3885619B2 (en) * | 2002-03-12 | 2007-02-21 | 東海ゴム工業株式会社 | High damping elastomer composition and elastomer product using the same |
| JP5246674B2 (en) * | 2005-07-27 | 2013-07-24 | 住友ゴム工業株式会社 | Paper feed rubber roller |
| JP4413959B2 (en) * | 2007-10-15 | 2010-02-10 | 住友ゴム工業株式会社 | Vibration and sound insulation materials for printer equipment |
| JP2009095999A (en) * | 2007-10-15 | 2009-05-07 | Sumitomo Rubber Ind Ltd | Ink tube for ink-jet printer |
| JP2013035907A (en) * | 2011-08-05 | 2013-02-21 | Polytec Design:Kk | Crosslinked rubber molding coated with thermoplastic elastomer, and method for manufacturing the same |
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2000
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2001
- 2001-08-29 CN CN 01123666 patent/CN1340561A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100420710C (en) * | 2003-05-07 | 2008-09-24 | 住友橡胶工业株式会社 | Elastomer composition and rubber roller |
| CN103694555A (en) * | 2013-11-29 | 2014-04-02 | 乐陵市白鸽食品机械有限公司 | Forming double-roller of round steamed bun forming machine |
| CN103694555B (en) * | 2013-11-29 | 2016-05-11 | 乐陵市白鸽食品机械有限公司 | A kind of moulding pair roller of justifying Bun shaping machine |
| CN106117824A (en) * | 2016-07-25 | 2016-11-16 | 安徽德源电缆集团有限公司 | A kind of preparation method of ethylene propylene rubber insulated electric cable with silicon rubber sheath material |
| CN106280025A (en) * | 2016-08-15 | 2017-01-04 | 合肥万向钱潮汽车零部件有限公司 | A kind of telescopic of truck drive shaft |
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