WO2018028196A1 - Continuous rubber mixing process method - Google Patents

Continuous rubber mixing process method Download PDF

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WO2018028196A1
WO2018028196A1 PCT/CN2017/076418 CN2017076418W WO2018028196A1 WO 2018028196 A1 WO2018028196 A1 WO 2018028196A1 CN 2017076418 W CN2017076418 W CN 2017076418W WO 2018028196 A1 WO2018028196 A1 WO 2018028196A1
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continuous
rubber
mixing
raw
mixer
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PCT/CN2017/076418
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French (fr)
Chinese (zh)
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汪传生
朱琳
刘营
边慧光
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青岛科技大学
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Priority to CN201610664108.XA priority Critical patent/CN106273022B/en
Priority to CN201610664108.X priority
Application filed by 青岛科技大学 filed Critical 青岛科技大学
Publication of WO2018028196A1 publication Critical patent/WO2018028196A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/74Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7495Systems, i.e. flow charts or diagrams; Plants for mixing rubber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/02Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/18Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/183Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/02Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22Component parts, details or accessories; Auxiliary operations
    • B29B7/24Component parts, details or accessories; Auxiliary operations for feeding
    • B29B7/242Component parts, details or accessories; Auxiliary operations for feeding in measured doses
    • B29B7/244Component parts, details or accessories; Auxiliary operations for feeding in measured doses of several materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58Component parts, details or accessories; Auxiliary operations
    • B29B7/72Measuring, controlling or regulating
    • B29B7/726Measuring properties of mixture, e.g. temperature or density
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58Component parts, details or accessories; Auxiliary operations
    • B29B7/72Measuring, controlling or regulating
    • B29B7/728Measuring data of the driving system, e.g. torque, speed, power, vibration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/74Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7461Combinations of dissimilar mixers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/74Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476Systems, i.e. flow charts or diagrams; Plants
    • B29B7/748Plants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/74Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7485Systems, i.e. flow charts or diagrams; Plants with consecutive mixers, e.g. with premixing some of the components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/02Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22Component parts, details or accessories; Auxiliary operations
    • B29B7/24Component parts, details or accessories; Auxiliary operations for feeding
    • B29B7/246Component parts, details or accessories; Auxiliary operations for feeding in mixers having more than one rotor and a casing closely surrounding the rotors, e.g. with feeding plungers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58Component parts, details or accessories; Auxiliary operations
    • B29B7/60Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/08Making granules by agglomerating smaller particles

Abstract

A continuous rubber mixing process method comprising a first step of continuous mixing: part of a weighed raw rubber raw material in a formulation and each of other systems in the formulation are added into an internal mixer for mixing; after being mixed for a predetermined time, the rubber material directly enters a counter-rotating twin-screw extruder for extrusion; and the extruded rubber material directly enters a double-roll tablet press for tablet pressing forming to obtain a pre-dispersion rubber master batch; a second step of continuous plastication: the remaining part of the raw rubber raw material in the formulation is added into a continuous plasticator (5) for plastication to obtain a plasticated rubber; and a third step of continuous mixing: the pre-dispersion rubber master batch and the plasticated rubber are continuously and quantitatively added into a continuous mixer (7) for continuous mixing. Sulphur stays for a short time and has a low temperature in the internal mixer so no scorching will occur; the produced rubber is homogeneous and high in quality; the production is continuous; and the production efficiency is high.

Description

一种连续式橡胶混炼工艺方法Continuous rubber mixing process method 技术领域Technical field
本发明涉及橡胶加工技术领域,具体来说,涉及一种连续式橡胶混炼工艺方法。The invention relates to the technical field of rubber processing, in particular to a continuous rubber mixing process method.
背景技术Background technique
橡胶行业是国民经济的重要基础产业之一,它不仅为人们提供日常生活不可或缺的日用和医用等轻工橡胶产品,而且向采掘、交通、建筑、机械、电子等重工业和新兴产业提供各种橡胶制生产设备或橡胶部件,而混炼技术的好坏对橡胶加工品的质量有着决定性作用,因此,生产出低能耗、高效率、高品质的橡胶是橡胶行业不断要解决的问题。The rubber industry is one of the important basic industries of the national economy. It not only provides people with light-duty rubber products such as daily use and medical products that are indispensable for daily life, but also provides heavy industries and emerging industries such as mining, transportation, construction, machinery and electronics. Various rubber production equipment or rubber parts, and the quality of the mixing technology plays a decisive role in the quality of rubber processed products. Therefore, the production of low-energy, high-efficiency, high-quality rubber is an ongoing problem in the rubber industry.
传统的橡胶混炼方法不能实现规模化连续生产,如果要实现规模化连续生产,则需要配备多台同型号密炼机或开炼机、提供大面积停放仓库,而且整体生产线太长、耗费时间较多,且多个操作步序均需人工完成导致效率较为低下。The traditional rubber mixing method can not achieve large-scale continuous production. If large-scale continuous production is to be realized, it is necessary to equip multiple sets of the same type of mixer or open mill, provide large-area parking warehouse, and the overall production line is too long and time consuming. More, and multiple operation steps need to be completed manually, resulting in low efficiency.
传统的混炼方法都是在开炼机上加硫,因为人的炼胶技术的差异使得胶料质量不稳定,不安全因素增加,而且传统的混炼工艺容易造成早硫。The traditional mixing method is to add sulfur to the mill, because the difference in human rubber mixing technology makes the quality of the rubber compound unstable, the unsafe factors increase, and the traditional mixing process is easy to cause early sulfur.
现有专利技术中针对橡胶混炼工艺存在多项改进,例如,中国专利申请201510405481.9中,具体公开了一种用于线缆厂的全自动连续式橡胶混炼方法,其中硫化体系是在连续混炼机二段补充混炼中加入,并未完全真正意义上解决早硫问题。There are a number of improvements in the rubber compounding process in the prior art. For example, in Chinese Patent Application No. 201510405481.9, a fully automatic continuous rubber mixing method for a cable factory is disclosed, in which the vulcanization system is continuously mixed. The addition of the second section of the refining machine has not completely solved the problem of early sulfur.
再如,中国专利申请201410648268.6中公开了一种串联式橡胶连续混炼方法,其中,在加入密炼机中进行混炼时,先加入密炼机中进行塑炼后,在分别加入除硫磺和促进剂之外的配合剂进行混炼。上述混炼方法仅仅是针对 常规橡胶混炼工艺做出的改进,不能很好的解决过硫问题,没有完全实现连续混炼。For example, Chinese Patent Application No. 201410648268.6 discloses a tandem type rubber continuous kneading method in which, when kneading is carried out in an internal mixer, it is first added to an internal mixer for mastication, and then sulfur and The compounding agent other than the accelerator is kneaded. The above mixing method is only for The improvement made by the conventional rubber mixing process can not solve the sulfur problem well, and the continuous mixing is not fully realized.
发明内容Summary of the invention
针对相关技术中的上述技术问题,本发明提出一种连续式橡胶混炼工艺方法,不仅能够实现连续化橡胶混炼生产,而且生产的胶料不会早硫,各方面性能均较为优良。In view of the above technical problems in the related art, the present invention proposes a continuous rubber compounding process method, which can not only realize continuous rubber compounding production, but also produce a rubber compound which does not have early sulfur and has excellent performance in all aspects.
为实现上述技术目的,本发明的技术方案是这样实现的:To achieve the above technical purpose, the technical solution of the present invention is implemented as follows:
一种连续式橡胶混炼工艺方法,包括连续混炼一段、连续塑炼二段及连续混炼三段,所述连续混炼一段步骤包括:将称量好的配方中生胶原料中的一部分及配方中其他各体系加入到密炼机中进行混炼;混炼预定时间后,胶料直接进入异向双螺杆挤出机中进行挤出;挤出后的胶料直接进入双辊压片机中进行压片成型,获得预分散母胶;A continuous rubber mixing process comprises a continuous mixing section, a continuous mastication two-stage and a continuous mixing three-stage, and the continuous mixing step comprises: part of the raw rubber raw material in the weighed formula And other systems in the formula are added to the internal mixer for mixing; after the predetermined time of mixing, the rubber directly enters the counter-rotating twin-screw extruder for extrusion; the extruded rubber directly enters the double-rolling tablet Press molding in the machine to obtain pre-dispersed masterbatch;
所述连续塑炼二段步骤包括:将配方中生胶原料中的剩余部分加入到连续塑炼机中进行塑炼,获得塑炼胶;The two steps of the continuous mastication process comprises: adding the remaining part of the raw rubber raw material in the formula to a continuous plasticizer for mastication to obtain a plasticating rubber;
所述连续混炼三段步骤包括:将所述预分散母胶及所述塑炼胶连续定量地加入连续混炼机中进行连续混炼,获得混炼胶。The three-stage continuous mixing step comprises: continuously and quantitatively adding the pre-dispersed masterbatch and the plasticating compound to a continuous mixer to obtain a rubber compound.
进一步地,胶料经所述连续混炼三段后进行出片并冷却。Further, the rubber is discharged and cooled after the continuous three-stage mixing.
进一步地,所述连续混炼一段步骤中生胶原料为配方中生胶原料的1/4,所述连续塑炼二段步骤中生胶原料为配方中生胶原料的3/4。Further, in the continuous mixing step, the raw rubber raw material is 1/4 of the raw rubber raw material in the formula, and the raw rubber raw material in the continuous plasticating two-step step is 3/4 of the raw rubber raw material in the formula.
进一步地,所述连续混炼三段步骤中预分散母胶及所述塑炼胶的配比是通过控制双螺杆挤出机的螺杆转速、双辊压片机的辊筒转速及连续塑炼机的螺杆转速的比值为1:1:1。Further, the ratio of the pre-dispersed masterbatch and the plasticating compound in the three-step continuous mixing process is controlled by the screw rotation speed of the twin-screw extruder, the roller rotation speed of the double-roll tablet press, and continuous mastication. The ratio of the screw speed of the machine is 1:1:1.
优选地,所述连续混炼一段中密炼机的工艺参数为:70%填充系数,转子转速60±15r/min,温控为50±10℃,上顶栓压力0.6±0.05MPa,混炼时间 为1min;双螺杆挤出机的螺杆转速为25rpm;双辊压片机的辊筒转速为25rpm。Preferably, the process parameters of the continuous mixing section of the intermediate mixer are: 70% filling coefficient, rotor speed 60±15r/min, temperature control 50±10° C., top plug pressure 0.6±0.05 MPa, mixing Time 1 min; the screw speed of the twin-screw extruder was 25 rpm; the roller speed of the twin-roll tablet press was 25 rpm.
优选地,所述连续混炼三段步骤中连续混炼机转子转速为25rpm,喂料段机筒温控温度为95℃,混炼段机筒温控温度为85℃,挤出段机筒温控温度为75℃,混炼机机头内部的冷却通道温度为65℃。Preferably, the continuous kneading machine rotor speed is 25 rpm in the continuous mixing three-step process, the feeding section barrel temperature control temperature is 95 ° C, the mixing section barrel temperature control temperature is 85 ° C, the extrusion section barrel The temperature control temperature was 75 ° C, and the cooling channel temperature inside the mixer head was 65 ° C.
进一步地,所述连续混炼一段步骤中采用的是密炼挤出成型一体机,其中密炼机设置在所述异向双螺杆挤出机的上方,所述密炼机的出料口对应所述异向双螺杆挤出机的进料口;所述双辊压片机代替所述异向双螺杆挤出机的机头,所述异向双螺杆挤出机的出料口对应所述双辊压片机的入料口。Further, in the step of continuously mixing, a mixing and extrusion molding machine is used, wherein an internal mixer is disposed above the counter-rotating twin-screw extruder, and the discharge port of the internal mixer corresponds to a feed port of the counter-rotating twin-screw extruder; the double-roll tablet press replaces the head of the counter-rotating twin-screw extruder, and the discharge port of the counter-rotating twin-screw extruder corresponds to The inlet of the two-roll tablet press.
优选地,所述连续混炼一段步骤中的称量采用自动称量装置,并设置在所述密炼机的前段,分别称量配方中的生胶原料、小料、炭黑及硫化体系,称量后加入到密炼机中。Preferably, the weighing in the continuous mixing step adopts an automatic weighing device, and is disposed in the front section of the internal mixer, and weigh the raw rubber raw materials, small materials, carbon black and vulcanization system in the formula, respectively. After weighing, it is added to the internal mixer.
进一步地,所述连续混炼三段步骤中预分散母胶及塑炼胶均采用输送带输送的方式连续定量地加入连续混炼机中进行连续混炼。Further, the pre-dispersed masterbatch and the plasticating compound in the three-step continuous mixing step are continuously and quantitatively added to the continuous mixer for continuous mixing by means of conveyor belt transportation.
优选地,所述预分散母胶通过双辊压片机排到输送带上;所述塑炼胶通过连续塑炼机的出料口排到输送带上,输送带通过电机控制实现正反转,周期性将胶料输送至连续混炼机。Preferably, the pre-dispersed masterbatch is discharged onto the conveyor belt by a two-roll tableting machine; the plasticating rubber is discharged onto the conveyor belt through the discharge port of the continuous plasticizer, and the conveyor belt is positively reversed by motor control. The compound is periodically delivered to the continuous mixer.
本发明的有益效果:本工艺方法中硫磺在密炼机中的时间短、温度低、不会早硫,生产出的胶均匀、质量高,连续性生产,生产效率高,设备间结构紧凑,整体装置占地面积较小、投资成本低。The invention has the beneficial effects that the sulfur in the process has short time in the internal mixer, low temperature, no early sulfur, uniform glue produced, high quality, continuous production, high production efficiency and compact structure between the devices. The overall device has a small footprint and low investment cost.
附图说明DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.
图1是根据本发明实施例所述连续式橡胶混炼方法的工艺流程示意图; 1 is a schematic view showing a process flow of a continuous rubber compounding method according to an embodiment of the present invention;
图2是根据本发明实施例所述连续式橡胶混炼装置的结构原理图;2 is a schematic structural view of a continuous rubber mixing device according to an embodiment of the present invention;
图3是根据本发明实施例所述连续混炼机的主视图;Figure 3 is a front elevational view of the continuous mixer in accordance with an embodiment of the present invention;
图4是根据本发明实施例所述连续混炼机的俯视图;4 is a plan view of a continuous mixer according to an embodiment of the present invention;
图5是根据本发明实施例所述胶料性能对比实验中拉伸强度对比柱状示意图;5 is a schematic diagram showing a tensile strength comparison column in a rubber material performance comparison experiment according to an embodiment of the present invention;
图6是根据本发明实施例所述胶料性能对比实验中撕裂强度对比柱状示意图;6 is a schematic diagram showing a comparison of tear strength in a comparison test of a rubber compound according to an embodiment of the present invention;
图7是根据本发明实施例所述胶料性能对比实验中炭黑分散度对比柱状示意图。Fig. 7 is a schematic view showing the comparison of the dispersion degree of carbon black in the performance comparison experiment of the rubber compound according to the embodiment of the present invention.
图中:In the picture:
1、自动称量系统;2、密炼部分;3、双螺杆挤出部分;4、双辊压片机头;5、连续塑炼机;6、传送带;7、连续混炼机。1, automatic weighing system; 2, the mixing part; 3, twin-screw extrusion part; 4, double-rolling tableting head; 5, continuous plastic machine; 6, conveyor belt; 7, continuous mixing machine.
具体实施方式detailed description
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention are within the scope of the present invention.
如图1所示,根据本发明实施例所述的一种连续式橡胶混炼工艺方法,包括以下步骤:As shown in FIG. 1 , a continuous rubber mixing process method according to an embodiment of the invention includes the following steps:
(1)制备母胶:通过自动称量系统称量出小料、炭黑及硫化体系,将全部的小料、炭黑、硫化体系及1/4的胶加入到密炼部分中,剪切混炼1分钟;混炼过程中温度不大于100℃,混合均匀的胶料通过密炼部分的出口排到双螺杆挤出部分的入料口,双螺杆异向旋转吃料,对胶料进行强化剪切联解,与同向双螺杆挤出机相比,异向双螺杆挤出机输送效率高、排气效果及熔融效 果更好;解联捏合后的胶料通过双螺杆挤出部分的出料口经过双辊压片机头进行压片,制得母胶。双辊压片机头将母胶压片后通过传送带供给到连续混炼机的喂料口中,实现对连续混炼机的连续喂料。(1) Preparation of masterbatch: Weigh the small material, carbon black and vulcanization system through the automatic weighing system, and add all the small materials, carbon black, vulcanization system and 1/4 of the glue to the mixing part, and cut Mixing for 1 minute; the temperature during the mixing process is not more than 100 ° C, the uniformly mixed rubber is discharged through the outlet of the mixing section to the inlet of the twin-screw extrusion section, and the twin-screw is rotated in the opposite direction to feed the rubber. Enhanced shear joint solution, compared with co-rotating twin-screw extruder, high-efficiency, exhaust effect and melting efficiency of the counter-rotating twin-screw extruder The product is better; the rubber compound after the kneading and kneading is pressed through the discharge port of the twin-screw extruding portion through the double-rolling tableting head to obtain the masterbatch. The two-roller tableting head feeds the masterbatch to the feed port of the continuous mixer through a conveyor belt to achieve continuous feeding of the continuous mixer.
其中密炼部分的工作参数为:采用70%填充系数,转子转速60±15r/min,温控为50±10℃,上顶栓压力0.6±0.05MPa;双螺杆挤出部分的转子转速为25rpm;双辊压片机头的转速为25rpm。The working parameters of the mixing part are: 70% filling factor, rotor speed 60±15r/min, temperature control 50±10°C, upper plug pressure 0.6±0.05MPa; twin screw extrusion part rotor speed 25rpm The speed of the double roll tableting head was 25 rpm.
(2)塑炼:将剩余3/4的胶加入连续塑炼机中,进行塑炼;通过控制双螺杆挤出机和连续塑炼机的转速进行母胶和剩余胶的配比。连续塑炼机的转速为25rpm。(2) Mastication: The remaining 3/4 of the glue is added to the continuous plasticizer for mastication; the ratio of the masterbatch to the remaining glue is controlled by controlling the rotation speed of the twin-screw extruder and the continuous plasticizer. The speed of the continuous plasticizer was 25 rpm.
(3)输送:母胶通过双辊压片机头排到输送带上,塑炼后的胶通过连续塑炼机的出料口排到输送带上,输送带通过电机控制实现正反转,周期性将胶料输送至连续混炼机。(3) Transportation: The mother rubber is discharged onto the conveyor belt through the double-rolling tableting machine head. The plasticized rubber is discharged to the conveyor belt through the discharge port of the continuous plastic mixer, and the conveyor belt is positively reversed by the motor control. The compound is periodically delivered to a continuous mixer.
(4)混炼:将连续塑炼机中塑炼的3/4的胶与经过双辊压片机压片的母胶输送到连续混炼机中进行混炼。连续混炼机转子转速为25rpm,喂料段机筒温控温度为95℃,混炼段机筒温控温度为85℃,挤出段机筒温控温度为75℃,混炼机机头内部的冷却通道温度为65℃。(4) Kneading: 3/4 of the glue which was masticated in the continuous plasticizer and the masterbatch which was pressed by the two-roll tablet press were conveyed to a continuous kneader for kneading. The continuous mixer rotor speed is 25 rpm, the feeding section barrel temperature control temperature is 95 ° C, the mixing section barrel temperature control temperature is 85 ° C, the extrusion section barrel temperature control temperature is 75 ° C, the mixer head The internal cooling channel temperature is 65 °C.
(5)出片并冷却:连续混炼机通过调节其转子转速和温控系统完成对胶料的混炼,混炼期间控制连续混炼机中的胶料温度不大于100℃,以防止胶料的硫化;混炼后的胶料经过连续混炼机挤出段实现胶料的出片;连续混炼机混炼生产出的胶料经胶片后处理装置冷却、折叠后形成胶片存贮待用。(5) Filming and cooling: The continuous mixer completes the compounding of the rubber compound by adjusting its rotor speed and temperature control system. During the mixing, the temperature of the rubber compound in the continuous mixer is controlled to be no more than 100 °C to prevent glue. The vulcanization of the material; the rubber compound after the kneading is passed through the extrusion section of the continuous kneader to realize the filming of the rubber; the rubber compound produced by the continuous kneading machine is cooled and folded by the film post-processing device to form a film storage. use.
本实施例中连续式橡胶混炼工艺方法具体在连续式橡胶混炼装置中进行,如图2-4所示,该装置主体结构包括小料称量系统1、密炼部分2、双螺杆挤出部分3、双辊压片机头4、连续塑炼机5、输送带6、连续混炼机7,密炼部分2的排胶口的下方对接双螺杆挤出部分3的进料口,以实现连续式送料;双螺杆挤出部分3的机头直接接双辊压片机头4,双辊压片机头4通过传送带6与连续混炼机7上端的喂料口对接,连续塑炼机5的机头通过传送带6 与连续混炼机上端的喂料口对接。The continuous rubber mixing process in this embodiment is specifically carried out in a continuous rubber mixing device, as shown in FIGS. 2-4, the main structure of the device includes a small material weighing system 1, a mixing portion 2, and a twin screw extrusion. a portion 3, a double roll tableting head 4, a continuous plasticizer 5, a conveyor belt 6, a continuous mixer 7, and a feed port of the twin-screw extruding portion 3 below the discharge port of the mixing portion 2, To realize continuous feeding; the head of the twin-screw extruding part 3 is directly connected to the double-rolling tableting head 4, and the double-rolling tableting head 4 is docked with the feeding port of the upper end of the continuous mixing machine 7 through the conveyor belt 6 to continuously mold The head of the refiner 5 passes the conveyor belt 6 Docking with the feed port at the upper end of the continuous mixer.
(1)本发明中进行连续混炼一段,采用的是连续式密炼机,包括最上方的小料称量系统,作为主体的密炼部分,下方的双螺杆挤出部分及作为机头的双辊压片机头。(1) In the present invention, a continuous mixing section is carried out, using a continuous internal mixer, including the uppermost small material weighing system, as a mixing part of the main body, a twin-screw extruding part below and a machine head Double roll tableting head.
本发明中对配方中原料的称量与输送采用的是小料称量系统进行手动称量或由计算机控制自动称量。小料称量系统包括炭黑自动称和输送系统、油料自动称和输送系统、硫化体系自动称和输送系统及生胶自动称和输送系统。In the present invention, the weighing and conveying of the raw materials in the formula is carried out by a small-weighing weighing system for manual weighing or by computer-controlled automatic weighing. The small material weighing system includes carbon black automatic weighing and conveying system, oil automatic weighing and conveying system, vulcanizing system automatic weighing and conveying system and raw rubber automatic weighing and conveying system.
连续式密炼机综合了密炼机的优异混合特性及双螺杆挤出机连续作业的特点。借助转子螺棱和混炼室的多重作用,对物料施以强力的挤压、剪切、搅混作用。使物料在极短的时间内在极快的速率下使能量耗散于物料中,所以它的剪切混合作用十分强烈。对于高分散混合度的物料,强烈的混合作用伴随高剪切应力,导致聚合物中的凝胶粒子和料块的迅速破碎均匀分散。The continuous mixer combines the excellent mixing characteristics of the internal mixer with the continuous operation of the twin-screw extruder. With the multiple action of the rotor screw and the mixing chamber, the material is subjected to strong extrusion, shearing and mixing. The material is dissipated in the material at a very fast rate in a very short time, so its shear mixing is very strong. For materials with high dispersion mixing, the intense mixing is accompanied by high shear stress, resulting in rapid fragmentation and uniform dispersion of the gel particles and the mass in the polymer.
(2)本发明中对生胶(实施例中为天然橡胶)采用的是连续塑炼机进行塑炼。采用机械力进行塑炼的原理是:在机械力作用下,在低温时首先切断橡胶大分子链生成大分子自由基。若周围有氧的存在,生成的自由基会立即与氧作用,生成橡胶大分子过氧化氢物一这样阻止了橡胶自由基的重新结合,起到塑炼的效果。在温度较高时由于橡胶软化,机械力的作用明显减小,橡胶表面的氧被活化,与橡胶大分子发生氧化断裂,完成塑炼。(2) In the present invention, the raw rubber (natural rubber in the examples) is subjected to mastication by a continuous plasticizer. The principle of mastication by mechanical force is: under the action of mechanical force, the rubber macromolecular chain is first cut at high temperature to generate macromolecular radicals. If there is oxygen around, the generated free radical will immediately react with oxygen to form rubber macromolecular hydrogen peroxide. This will prevent the recombination of rubber radicals and play the role of mastication. When the temperature is high, the rubber is softened, the mechanical force is significantly reduced, the oxygen on the surface of the rubber is activated, and the rubber macromolecule is oxidatively fractured to complete the mastication.
塑炼过程是使橡胶大分子链断裂,分子链由长变短而使分子量分布均匀化的过程。在塑炼过程中导致大分子链断裂的因素主要有两个:一是机械破坏作用;二是热氧化降解作用。低温塑炼时,主要是由于机械破坏作用,大分子在强烈的机械力作用下发生断链。高温塑炼时,热氧化降解作用占主导地位。The mastication process is a process in which the rubber macromolecular chain is broken and the molecular chain is shortened to make the molecular weight distribution uniform. There are two main factors that cause macromolecular chain breakage during the mastication process: one is mechanical destruction; the other is thermal oxidative degradation. At low temperature mastication, the macromolecules are broken under strong mechanical force due to mechanical damage. Thermal oxidative degradation dominates during high temperature mastication.
使用螺杆塑炼机的螺杆与机筒间的机械剪切力和高温热作用使橡胶分子链断裂,与开炼机和密炼机塑炼的差别是螺杆塑炼法中氧对生胶的作用较小。使用螺杆塑炼机塑炼时应该严格控制排胶温度在180℃以下,并注意防止出胶 后胶料表面氧化作用,尽量避免产生夹生胶。The mechanical shearing force and high-temperature heat between the screw and the barrel of the screw-type plasticizer are used to break the rubber molecular chain, and the difference from the mastication of the open mill and the mixer is the effect of oxygen on the raw rubber in the screw mastication method. Smaller. When using a screw plastic mixer, the temperature of the glue should be strictly controlled below 180 °C, and take care to prevent the glue. After the surface of the rubber compound oxidation, try to avoid the formation of raw rubber.
橡胶连续塑炼装置包括主机、加料机构、加热冷却系统和控制系统4部分,控制系统连接加热冷却系统、传动系统和加料系统,实现对塑炼机操作过程的智能化监控。The rubber continuous masticating equipment includes a main machine, a feeding mechanism, a heating and cooling system and a control system. The control system is connected to the heating and cooling system, the transmission system and the feeding system to realize intelligent monitoring of the operation process of the plastic mixer.
橡胶连续塑炼机采用组合式平行双转子结构,双转子向内旋转,每根转子由实现加料、塑炼、输送和挤出功能的多种元件按照相位和顺序依次安装在芯轴上,这种积木组合式结构便于制造、安装、维修,而且可以通过更换元件的种类或者位置,提高塑炼效果。连续塑炼机利用捏和块、啮合型密炼转子、剪切型密炼转子、销钉机筒、六棱柱、大导程、齿形盘等多种塑炼转子元件,对胶料进行强烈的剪切、拉伸、撕扯和挤压,使橡胶大分子链断裂,生成大分子自由基,而获得充分、均匀的塑炼效果。The rubber continuous plasticizer adopts a combined parallel double rotor structure, and the two rotors rotate inward, and each rotor is sequentially mounted on the mandrel in phase and order by various components for feeding, masticating, conveying and extruding functions. The modular structure of the building blocks is easy to manufacture, install, and maintain, and the mastication effect can be improved by changing the type or position of the components. Continuous plastic mixer uses a variety of plastic rotor components such as kneading block, meshing type dense rotor, shear type dense rotor, pin barrel, hexagonal prism, large lead, toothed disc, etc. Shearing, stretching, tearing and squeezing, the rubber macromolecular chain is broken, and macromolecular radicals are generated to obtain a sufficient and uniform mastication effect.
因而本发明中利用连续塑炼机作为所述连续塑炼二段,采用低温塑炼,降低生胶分子量和粘度以提高其可塑性,并获适当的流动性,以满足混炼和成型进一步加工的需要。Therefore, in the present invention, a continuous plasticizer is used as the second section of the continuous mastication, and low-temperature mastication is adopted to reduce the molecular weight and viscosity of the raw rubber to improve the plasticity thereof, and to obtain appropriate fluidity to satisfy the further processing of the mixing and molding. need.
(3)本发明中进行连续混炼三段采用的是连续混练机,连续混炼机转子由两根大小相同、结构相互对称的转子组成。在异向双转子连续混炼机运行时,两根转子呈异向、等转速且部分啮合状态旋转,以实现加料、剪切、捏炼、输送、混炼和挤出等综合功能。如图3-4所示。(3) In the present invention, the continuous mixing three-stage is a continuous kneading machine, and the continuous kneading machine rotor is composed of two rotors of the same size and symmetrical structure. During the operation of the counter-rotating double-rotor continuous mixer, the two rotors rotate in an anisotropic, equal-speed and partially meshed state to achieve a comprehensive function of feeding, shearing, kneading, conveying, mixing and extrusion. As shown in Figure 3-4.
连续混练机的机筒的主体结构包括四段结构和大小均相同的机筒,每段机筒的内部开设有圆形槽用于安装混炼机转子,每段机筒的内壁开设有冷却通道用于控制混炼机机筒的温度,四段机筒之间通过螺栓固定密封对接。The main structure of the barrel of the continuous kneading machine comprises a four-stage structure and a barrel of the same size. Each barrel has a circular groove for installing the mixer rotor, and the inner wall of each barrel is cooled. The channel is used to control the temperature of the mixer barrel, and the four-stage barrels are sealed and docked by bolts.
其中,最右端机筒的正上方开设有喂料口,喂料口边缘设置有加厚层,以防止通过螺栓与存料斗贯通式对接时穿透冷却通道,将连续密炼机与连续塑炼机获得的胶料通过输送带运送到喂料口上方进行加料。Wherein, the feed port is opened directly above the rightmost barrel, and a thick layer is arranged at the edge of the feeding port to prevent the cooling passage from penetrating through the bolt and the hopper, and the continuous internal mixer and the continuous masticating The rubber obtained by the machine is transported to the top of the feed port through a conveyor belt for feeding.
混炼机机头的内部设有冷却通道用于控制混炼机机头的温度,混炼机机头与混炼机机筒之间通过螺栓固定密封对接,冷却通道中可根据需要选用水 或油等不同冷却介质。The inside of the mixer head is provided with a cooling passage for controlling the temperature of the head of the mixer, and the joint between the mixer head and the mixer barrel is fixed by bolts, and the water can be selected as needed in the cooling passage. Or different cooling media such as oil.
实施例Example
本实施例中采用的配方为全钢子午胎胎面胶配方,混炼方法采用本发明所述的连续式橡胶混炼工艺方法,其中具体的配方表如下:The formula adopted in this embodiment is a full steel radial tire tread rubber formula, and the mixing method adopts the continuous rubber mixing process method of the present invention, wherein the specific formula table is as follows:
Figure PCTCN2017076418-appb-000001
Figure PCTCN2017076418-appb-000001
对比例Comparative example
本发明中采用传统连续式混炼工艺方法作为对比,其中的具体步骤包括:In the present invention, a conventional continuous mixing process is adopted as a comparison, and specific steps include:
(1)采用65±3%的填充系数,以密炼机的具体型号和实施例中所述混炼胶的生产配方为根据,计算出各种物料的质量并称量后备用,设定密炼机的工作参数采用70%填充系数,转子转速60±15r/min,温控为50±10℃,上顶栓压力0.6±0.05MPa;(1) Using a filling factor of 65±3%, based on the specific model of the internal mixer and the production formula of the rubber mixture described in the examples, calculate the mass of each material and weigh it after use, setting the density. The working parameters of the mixer adopt 70% filling coefficient, the rotor speed is 60±15r/min, the temperature control is 50±10°C, and the upper plug pressure is 0.6±0.05MPa;
(2)将步骤(1)中称量的天然橡胶投入密炼机中进行35±3s的塑炼,然后再分别加入炭黑N330,氧化锌、防老剂RD、增塑剂A、硬脂酸SA进行混炼;当密炼室中的混炼胶温度达到110±3℃和120±3℃时,各上升和下降上顶栓1次,使得胶料混炼充分,当密炼室中的胶料混炼胶温度达到140±3℃,完成混炼打开下顶栓排出胶料;(2) The natural rubber weighed in step (1) is put into an internal mixer for 35±3s mastication, and then carbon black N330, zinc oxide, antioxidant RD, plasticizer A, stearic acid are separately added. SA is mixed; when the temperature of the rubber compound in the mixing chamber reaches 110±3°C and 120±3°C, each rise and fall of the top plug is made once, so that the rubber compound is fully mixed, when it is in the mixing chamber. The temperature of the rubber compound rubber reaches 140±3°C, and the mixing is completed to open the lower plug to discharge the rubber;
(3)将排出的胶料经过现有技术中的开炼机进行多次压片后,再加入配方中所述促进剂NOBS和硫磺通过打三角包的方式使其充分混合,然后进行后续的相关工艺及测试对比。(3) After the discharged rubber compound is subjected to a plurality of tableting by the open mill of the prior art, the accelerator NOBS and sulfur are added to the formulation to be thoroughly mixed by means of a triangular package, and then subjected to subsequent Related processes and test comparisons.
图5为本发明涉及的连续式橡胶混炼工艺方法与传统密炼机混炼方法分别生产五组胶料对应的拉伸强度对比柱状示意图,其中横轴代表样本编号分 为第1组、第2组、第3组、第4组和第5组,纵轴代表拉伸强度/MPa,黑色柱代表传统密炼机混炼方法,灰色柱代表本发明连续式橡胶混炼工艺方法。5 is a schematic diagram showing a tensile strength comparison column of a continuous rubber mixing process and a conventional internal mixer mixing method for producing five sets of rubber materials, wherein the horizontal axis represents the sample number. For the first group, the second group, the third group, the fourth group and the fifth group, the vertical axis represents the tensile strength / MPa, the black column represents the conventional internal mixer mixing method, and the gray column represents the continuous rubber mixing of the present invention. Refining process.
图6为本发明涉及的连续式橡胶混炼工艺方法与传统密炼机混炼方法分别生产五组胶料对应的撕裂强度对比柱状示意图,其中横轴代表样本编号分为第1组、第2组、第3组、第4组和第5组,纵轴代表撕裂强度KN/m,黑色柱代表传统密炼机混炼方法,灰色柱代表本发明连续式橡胶混炼工艺方法。6 is a schematic diagram showing a comparison of a tear strength corresponding to a continuous rubber mixing process and a conventional internal mixer mixing method for producing five sets of rubber materials, wherein the horizontal axis represents the sample number divided into the first group, the first Group 2, Group 3, Group 4 and Group 5, the vertical axis represents the tear strength KN/m, the black column represents the conventional internal mixer mixing method, and the gray column represents the continuous rubber compounding process of the present invention.
图7为本发明涉及的连续式橡胶混炼工艺方法与传统密炼机混炼方法分别生产五组胶料对应的炭黑分散度对比柱状示意图,其中横轴代表样本编号分为第1组、第2组、第3组、第4组和第5组,纵轴代表炭黑分散度,黑色柱代表传统密炼机混炼方法,灰色柱代表本发明连续式橡胶混炼工艺方法。7 is a schematic diagram showing a comparison of carbon black dispersion degree corresponding to a continuous rubber mixing process method and a conventional internal mixer mixing method according to the present invention, wherein the horizontal axis represents the sample number is divided into the first group, Group 2, Group 3, Group 4, and Group 5, the vertical axis represents carbon black dispersion, the black column represents a conventional internal mixer mixing method, and the gray column represents the continuous rubber compounding process of the present invention.
从图5-7看出,本发明所述的连续式橡胶混炼工艺方法所生成的胶料性能远高于传统炼胶工艺所生产的胶料。It can be seen from Figures 5-7 that the performance of the rubber compound produced by the continuous rubber compounding process of the present invention is much higher than that of the conventional rubber compounding process.
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.

Claims (10)

  1. 一种连续式橡胶混炼工艺方法,包括连续混炼一段、连续塑炼二段及连续混炼三段,其特征在于,A continuous rubber mixing process method comprises a continuous mixing section, a continuous plasticizing two-stage and a continuous mixing three-stage, wherein
    所述连续混炼一段步骤包括:将称量好的配方中生胶原料中的一部分及配方中其他各体系加入到密炼机中进行混炼;混炼预定时间后,胶料直接进入异向双螺杆挤出机中进行挤出;挤出后的胶料直接进入双辊压片机中进行压片成型,获得预分散母胶;The step of continuously mixing comprises: adding a part of the raw rubber raw material in the weighed formula and other systems in the formula to the internal mixer for mixing; after the predetermined time of mixing, the rubber material directly enters the opposite direction. Extrusion is carried out in a twin-screw extruder; the extruded rubber is directly introduced into a two-roll tablet press for tableting to obtain a pre-dispersed masterbatch;
    所述连续塑炼二段步骤包括:将配方中生胶原料中的剩余部分加入到连续塑炼机中进行塑炼,获得塑炼胶;The two steps of the continuous mastication process comprises: adding the remaining part of the raw rubber raw material in the formula to a continuous plasticizer for mastication to obtain a plasticating rubber;
    所述连续混炼三段步骤包括:将所述预分散母胶及所述塑炼胶连续定量地加入连续混炼机中进行连续混炼,获得混炼胶。The three-stage continuous mixing step comprises: continuously and quantitatively adding the pre-dispersed masterbatch and the plasticating compound to a continuous mixer to obtain a rubber compound.
  2. 根据权利要求1所述的连续式橡胶混炼工艺方法,其特征在于,胶料经所述连续混炼三段后进行出片并冷却。The continuous rubber compounding process according to claim 1, wherein the rubber is subjected to sheeting and cooling after the continuous three-stage mixing.
  3. 根据权利要求1所述的连续式橡胶混炼工艺方法,其特征在于,所述连续混炼一段步骤中生胶原料为配方中生胶原料的1/4,所述连续塑炼二段步骤中生胶原料为配方中生胶原料的3/4。The continuous rubber compounding process according to claim 1, wherein the raw rubber raw material in the continuous mixing step is 1/4 of the raw rubber raw material in the formula, and the continuous plasticating two-stage step The raw rubber raw material is 3/4 of the raw rubber raw material in the formula.
  4. 根据权利要求1所述的连续式橡胶混炼工艺方法,其特征在于,所述连续混炼三段步骤中预分散母胶及所述塑炼胶的配比是通过控制双螺杆挤出机的螺杆转速、双辊压片机的辊筒转速及连续塑炼机的螺杆转速的比值为1:1:1。The continuous rubber compounding process according to claim 1, wherein the ratio of the pre-dispersed masterbatch and the plasticating compound in the three-step continuous mixing step is controlled by a twin-screw extruder The ratio of the screw speed, the roller speed of the two-roll tablet press, and the screw speed of the continuous plasticizer was 1:1:1.
  5. 根据权利要求4所述的连续式橡胶混炼工艺方法,其特征在于,所述连续混炼一段中密炼机的工艺参数为:70%填充系数,转子转速60±15r/min,温控为50±10℃,上顶栓压力0.6±0.05MPa,混炼时间为1min;双螺杆挤出机的螺杆转速为25rpm;双辊压片机的辊筒转速为25rpm。 The continuous rubber mixing process according to claim 4, wherein the process parameters of the continuous mixing section of the intermediate mixer are: 70% filling factor, rotor speed 60±15r/min, temperature control is 50±10°C, the top plug pressure is 0.6±0.05MPa, the mixing time is 1min; the screw speed of the twin-screw extruder is 25rpm; the roller speed of the double-roll tablet press is 25rpm.
  6. 根据权利要求5所述的连续式橡胶混炼工艺方法,其特征在于,所述连续混炼三段步骤中连续混炼机转子转速为25rpm,喂料段机筒温控温度为95℃,混炼段机筒温控温度为85℃,挤出段机筒温控温度为75℃,混炼机机头内部的冷却通道温度为65℃。The continuous rubber compounding process according to claim 5, wherein the continuous kneading machine rotor rotation speed is 25 rpm in the continuous mixing three-step process, and the feeding section barrel temperature control temperature is 95 ° C, mixed The temperature control temperature of the refining barrel is 85 °C, the temperature control temperature of the barrel of the extrusion section is 75 °C, and the cooling channel temperature inside the head of the mixer is 65 °C.
  7. 根据权利要求1所述的连续式橡胶混炼工艺方法,其特征在于,所述连续混炼一段步骤中采用的是密炼挤出成型一体机,其中密炼机设置在所述异向双螺杆挤出机的上方,所述密炼机的出料口对应所述异向双螺杆挤出机的进料口;所述双辊压片机代替所述异向双螺杆挤出机的机头,所述异向双螺杆挤出机的出料口对应所述双辊压片机的入料口。The continuous rubber compounding process according to claim 1, wherein a step of the continuous kneading adopts a kneading extrusion molding machine, wherein the internal mixer is disposed on the counter-rotating twin screw Above the extruder, the discharge port of the internal mixer corresponds to the feed port of the counter-rotating twin-screw extruder; the double-roll tablet press replaces the head of the counter-rotating twin-screw extruder The discharge port of the counter-rotating twin-screw extruder corresponds to the inlet of the two-roll tablet press.
  8. 根据权利要求7所述的连续式橡胶混炼工艺方法,其特征在于,所述连续混炼一段步骤中的称量采用自动称量装置,并设置在所述密炼机的前段,分别称量配方中的生胶原料、小料、炭黑及硫化体系,称量后加入到密炼机中。The continuous rubber mixing process according to claim 7, wherein the weighing in the continuous mixing step is performed by an automatic weighing device, and is disposed in the front section of the internal mixer, and weighed separately. The raw rubber raw materials, small materials, carbon black and vulcanization system in the formula are weighed and added to the internal mixer.
  9. 根据权利要求1所述的连续式橡胶混炼工艺方法,其特征在于,所述连续混炼三段步骤中预分散母胶及塑炼胶均采用输送带输送的方式连续定量地加入连续混炼机中进行连续混炼。The continuous rubber compounding process according to claim 1, wherein the pre-dispersed masterbatch and the plasticating compound in the three-step continuous mixing step are continuously and quantitatively added to the continuous mixing by means of conveyor belt transportation. Continuous mixing in the machine.
  10. 根据权利要求9所述的连续式橡胶混炼工艺方法,其特征在于,所述预分散母胶通过双辊压片机排到输送带上;所述塑炼胶通过连续塑炼机的出料口排到输送带上,输送带通过电机控制实现正反转,周期性将胶料输送至连续混炼机。 The continuous rubber compounding process according to claim 9, wherein the pre-dispersed masterbatch is discharged onto the conveyor belt by a two-roll tablet press; the plasticating rubber is discharged through a continuous plasticizer The mouth is discharged onto the conveyor belt, and the conveyor belt is positively reversed by motor control, and the rubber material is periodically conveyed to the continuous mixer.
PCT/CN2017/076418 2016-08-12 2017-03-13 Continuous rubber mixing process method WO2018028196A1 (en)

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