CN103834074B - Escalator handrail styrene-butadiene rubber(SBR) of the warping strength fatigue of a kind of high stress at definite elongation and preparation method thereof - Google Patents
Escalator handrail styrene-butadiene rubber(SBR) of the warping strength fatigue of a kind of high stress at definite elongation and preparation method thereof Download PDFInfo
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- CN103834074B CN103834074B CN201410096390.7A CN201410096390A CN103834074B CN 103834074 B CN103834074 B CN 103834074B CN 201410096390 A CN201410096390 A CN 201410096390A CN 103834074 B CN103834074 B CN 103834074B
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Abstract
The invention discloses the escalator handrail styrene-butadiene rubber(SBR) of the warping strength fatigue of a kind of high stress at definite elongation, described escalator handrail styrene-butadiene rubber(SBR) is made up of the component of following weight percent: styrene-butadiene rubber(SBR) 25 ~ 31%, natural rubber 6 ~ 10%, Hardening resin 3 ~ 6%, carbon black 30 ~ 36%, white carbon black 12 ~ 16%, softening softening agent 1 ~ 3%, promoting agent 2 ~ 4%, vulcanizing agent 0.5 ~ 1.5%, promotor 0.5 ~ 1.5%, coupling agent 0.5 ~ 1.5%, auxiliary agent 4.5 ~ 8.5%.The present invention have high rigidity, high stress at definite elongation, warping strength fatigue, unit elongation suitably, the feature of good processability, be applicable to extrusion moulding complete processing, vulcanized article long service life.
Description
Technical field
The present invention relates to a kind of rubber, particularly the escalator handrail styrene-butadiene rubber(SBR) and preparation method thereof of the warping strength fatigue of a kind of high stress at definite elongation.
Background technology
Elevator handrail is one of important spare part of all kinds of civilian elevator, along with the continuous quickening of China's modernization construction process, elevator has become necessary facility day by day indispensable in people's daily life, particularly in the public infrastructure developments such as airport, city underground, large sized commercial center, high-rise civil building, elevator carries important utility function, therefore also grow with each passing day to the current demand of elevator, the market outlook of visible elevator handrail are very optimistic.
The defect that existing elastomeric material formula is meeting the hardness, the stress at definite elongation that there is elastomeric material in escalator handrail performance requriements and can not mate very well with its warping strength fatigue, processing characteristics.
Summary of the invention
The object of the invention is for the problems referred to above, the escalator handrail styrene-butadiene rubber(SBR) of the warping strength fatigue of a kind of high stress at definite elongation is provided, additionally provide a kind of method preparing this rubber simultaneously.
To achieve these goals, the invention provides following technical scheme: the escalator handrail styrene-butadiene rubber(SBR) of the warping strength fatigue of a kind of high stress at definite elongation, described escalator handrail styrene-butadiene rubber(SBR) is made up of the component of following weight percent:
Wherein, described escalator handrail styrene-butadiene rubber(SBR) is made up of the component of following weight percent:
Wherein, described Hardening resin is S6H high-phenylethylene.
Wherein, described coupling agent is coupling agent HP669.
Wherein, described auxiliary agent is the combination of anti-aging agent and tackifier, and the ratio of tackifier and anti-aging agent is 2:1 ~ 3:1.
Wherein, described anti-aging agent is antioxidant BLE, and tackifier are tackifier KORESIN.
General types in industry all selected by softening softening agent, promoting agent, vulcanizing agent, promotor.
The present invention also provides the preparation method of the escalator handrail styrene-butadiene rubber(SBR) of the warping strength fatigue of a kind of high stress at definite elongation, and described preparation method comprises the following steps:
(1) get the raw materials ready: proportioning according to claim 1, styrene-butadiene rubber(SBR), natural rubber, Hardening resin, carbon black, softening softening agent are placed after weighing respectively, batching A is formed together with white carbon black fits over coupling agent, auxiliary agent, promoting agent are fitted over and form batching B together, together with being fitted over promotor by vulcanizing agent, forms batching C;
(2) first is mixing: by styrene-butadiene rubber(SBR), natural rubber, Hardening resin, 2/5 carbon black drop into mixer mixing 30-70 second after propose hammer cleaning, then hammer mixing 30-70 proposes hammer cleaning second again, after this be dumped into slice on cutting machine after continuing mixing 30 ~ 70 seconds, make rubber unvulcanizate A:
(3) second is mixing: mixing for first rubber unvulcanizate A, 3/5 remaining carbon black, batching A and the batching B made is dropped into mixer mixing 20 ~ 40 seconds, then carry hammer and add mixing 30 ~ 70 seconds of softening softening agent continuation, continue mixing 20 ~ 40 seconds after again proposing hammer cleaning, propose hammer cleaning through another and within mixing 40 ~ 60 seconds, be dumped into slice on cutting machine again, make rubber unvulcanizate B;
(4) the 3rd roads are mixing: mixing for second obtained rubber unvulcanizate B and batching C is dropped into mixer mixing 20 ~ 40 seconds, is dumped into slice on cutting machine, completes preparation then continue mixing 20 ~ 40 seconds after cleaning after.
Wherein, in described (4) step, rubber unvulcanizate B, batching C should be dropped into mixer mixing together.
The present invention selects styrene-butadiene rubber(SBR) to make these rubber vulcanization goods have good warping strength be full of cracks performance and wear resisting property as the material of main part of this sizing compound formula, and material cost is relatively low; Also with high-phenylethylene Hardening resin in formula, be conducive to the hardness of increase sizing material and keep relatively high gum content, improving the process industrial art performance of sizing material simultaneously; And allocating into of coupling agent HP669 and white carbon black ZC185 makes the warping strength fatigue property of sizing material and stress at definite elongation be able to further raising; Being added with of antioxidant BLE is beneficial to the warping strength fatigue property improving sizing material; Tackifying resin KORESIN can ensure the processing laminating viscosity of high rigidity sizing material.
Compared with prior art, the present invention have high rigidity, high stress at definite elongation, warping strength fatigue, unit elongation suitably, the feature of good processability, be applicable to extrusion moulding complete processing, vulcanized article long service life.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1-6
The escalator handrail styrene-butadiene rubber(SBR) of the warping strength fatigue of high stress at definite elongation involved in the present invention is manufactured according to following steps:
(1) get the raw materials ready: proportioning according to claim 1, styrene-butadiene rubber(SBR), natural rubber, Hardening resin, carbon black, softening softening agent are placed after weighing respectively, batching A is formed together with white carbon black fits over coupling agent, auxiliary agent, promoting agent are fitted over and form batching B together, together with being fitted over promotor by vulcanizing agent, forms batching C;
(2) first is mixing: by styrene-butadiene rubber(SBR), natural rubber, Hardening resin, 2/5 carbon black drop into mixer mixing 30-70 second after propose cleaning of hanging down, then hammer mixing 30-70 proposes hammer cleaning second again, after this be dumped into slice on cutting machine after continuing mixing 30 ~ 70 seconds, make rubber unvulcanizate A:
(3) second is mixing: mixing for first rubber unvulcanizate A, 3/5 remaining carbon black, batching A and the batching B made is dropped into mixer mixing 20 ~ 40 seconds, then carry hammer and add mixing 30 ~ 70 seconds of softening softening agent continuation, continue mixing 20 ~ 40 seconds after again proposing hammer cleaning, propose hammer cleaning through another and within mixing 40 ~ 60 seconds, be dumped into slice on cutting machine again, make rubber unvulcanizate B;
(4) the 3rd roads are mixing: mixing for second obtained rubber unvulcanizate B and batching C is dropped into mixer mixing 20 ~ 40 seconds, is dumped into slice on cutting machine, completes preparation then continue mixing 20 ~ 40 seconds after cleaning after.
In (1) above-mentioned step, also according to proportioning according to claim 3, coupling agent and white reinforcing filler need be fitted together; In (4) above-mentioned step, also rubber unvulcanizate B, batching C are dropped into mixer mixing together.
Composition and the content of embodiment 1 ~ 6 are as shown in table 1.
Weight percent in table 1 embodiment 1-6
In auxiliary agent, the ratio of tackifier KORESIN and antioxidant BLE is 3:1.
Table 2 is the mixing times in embodiment 1-6.
Mixing time in table 2 embodiment 1-6
Table 3 is performance perameters of embodiment 1-6 products obtained therefrom.
The performance perameter of table 3 embodiment 1-6 products obtained therefrom
As can be seen from Table 3, the escalator handrail rubber of technical solution of the present invention gained all has good tensile strength and warping strength fatigue property.Wherein especially with the comprehensive physical mechanical property of embodiment 5 and process industrial art performance best, its hardness reach 90 degree, 100% stress at definite elongation be greater than 16MPa, tensile strength and unit elongation also relatively high, warping strength times of fatigue can reach 400,000 times, extrusion flowability and the shaping viscosity of sizing material are good, are applicable to extrusion moulding complete processing.
The present invention have high rigidity, high stress at definite elongation, warping strength fatigue, unit elongation suitably, the feature of good processability, be applicable to extrusion moulding complete processing, vulcanized article long service life.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (3)
1. an escalator handrail styrene-butadiene rubber(SBR) for the warping strength fatigue of high stress at definite elongation, is characterized in that, described escalator handrail styrene-butadiene rubber(SBR) is made up of the component of following weight percent:
Described Hardening resin is S6H high-phenylethylene;
Described coupling agent is coupling agent HP669;
Described auxiliary agent is the combination of anti-aging agent and tackifier, and the ratio of tackifier and anti-aging agent is 2:1 ~ 3:1;
Described anti-aging agent is antioxidant BLE, and tackifier are tackifier KORESIN.
2. the escalator handrail styrene-butadiene rubber(SBR) of the warping strength fatigue of high stress at definite elongation according to claim 1, is characterized in that, described escalator handrail styrene-butadiene rubber(SBR) is made up of the component of following weight percent:
3. the preparation method of the escalator handrail styrene-butadiene rubber(SBR) of the warping strength fatigue of high stress at definite elongation according to claim 1 and 2, it is characterized in that, described preparation method comprises the following steps:
(1) get the raw materials ready: proportioning according to claim 1, styrene-butadiene rubber(SBR), natural rubber, Hardening resin, carbon black, softening softening agent are placed after weighing respectively, batching A is formed together with white carbon black fits over coupling agent, auxiliary agent, promoting agent are fitted over and form batching B together, together with being fitted over promotor by vulcanizing agent, forms batching C;
(2) first is mixing: by styrene-butadiene rubber(SBR), natural rubber, Hardening resin, 2/5 carbon black drop into mixer mixing 30-70 second after propose hammer cleaning, then hammer mixing 30-70 proposes hammer cleaning second again, after this be dumped into slice on cutting machine after continuing mixing 30 ~ 70 seconds, make rubber unvulcanizate A;
(3) second is mixing: mixing for first rubber unvulcanizate A, 3/5 remaining carbon black, batching A and the batching B made is dropped into mixer mixing 20 ~ 40 seconds, then carry hammer and add mixing 30 ~ 70 seconds of softening softening agent continuation, continue mixing 20 ~ 40 seconds after again proposing hammer cleaning, propose hammer cleaning through another and within mixing 40 ~ 60 seconds, be dumped into slice on cutting machine again, make rubber unvulcanizate B;
(4) the 3rd roads are mixing: mixing for second obtained rubber unvulcanizate B and batching C is dropped into mixer mixing 20 ~ 40 seconds, is dumped into slice on cutting machine, completes preparation then continue mixing 20 ~ 40 seconds after cleaning after.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410096390.7A CN103834074B (en) | 2014-03-14 | 2014-03-14 | Escalator handrail styrene-butadiene rubber(SBR) of the warping strength fatigue of a kind of high stress at definite elongation and preparation method thereof |
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| CN201410096390.7A CN103834074B (en) | 2014-03-14 | 2014-03-14 | Escalator handrail styrene-butadiene rubber(SBR) of the warping strength fatigue of a kind of high stress at definite elongation and preparation method thereof |
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| CN103834074A CN103834074A (en) | 2014-06-04 |
| CN103834074B true CN103834074B (en) | 2015-09-23 |
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| CN104194067A (en) * | 2014-07-11 | 2014-12-10 | 宁海县一帆橡塑有限公司 | Formula for producing escalator handrail |
| CN104262695A (en) * | 2014-08-29 | 2015-01-07 | 朱其贵 | Flexure-fatigue-resistant rubber material for escalator armrests |
| CN110922658A (en) * | 2019-12-06 | 2020-03-27 | 浙江环科万顺新材料有限公司 | Reinforced rubber material and preparation method thereof |
| CN113670748B (en) * | 2021-09-08 | 2022-05-13 | 青岛科技大学 | Test characterization method for fatigue initial-stage damage and development process of vulcanized rubber |
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| CN102304240B (en) * | 2011-10-11 | 2013-06-26 | 无锡宝通带业股份有限公司 | Heat-resistant and wear-resistant conveyor belt covering rubber and preparation method thereof |
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Address after: 215412 Suzhou Province, Taicang City, the town of LU Hong, the village of the three port of the town of Jiangsu Patentee after: Jiangsu Guanlian New Materials Technology Co., Ltd. Address before: 215412 Suzhou Province, Taicang City, the town of LU Hong, the village of the three port of the town of Jiangsu Patentee before: Taicang Guanlian Polymeric Material Co., Ltd. |