CN102617937B - Rubber additive pre-dispersion, preparation method thereof and method for preparing rubber additives - Google Patents
Rubber additive pre-dispersion, preparation method thereof and method for preparing rubber additives Download PDFInfo
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- CN102617937B CN102617937B CN 201210072477 CN201210072477A CN102617937B CN 102617937 B CN102617937 B CN 102617937B CN 201210072477 CN201210072477 CN 201210072477 CN 201210072477 A CN201210072477 A CN 201210072477A CN 102617937 B CN102617937 B CN 102617937B
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Abstract
The invention discloses a rubber additive pre-dispersion which is high in compatibility with different kinds of rubber and of which the residual components do not influence the performance of rubber products and a simple method for preparing the rubber additive pre-dispersion conveniently. In addition, the invention also provides a method for preparing rubber additives containing the rubber additive pre-dispersion. The rubber additive pre-dispersion can be suitable for different rubber additives and is high in compatibility with different rubber products; components of the rubber additive pre-dispersion do not influence the vulcanization characteristics of ingredients and the physical properties of the products; and the rubber additive pre-dispersion and additive master batches can be granulated in an extruder by regulating a ratio of resin type chlorinated polyethylene (CPE) to a corresponding plasticizer and mixing in a banburying machine, and the master batches are blown into a collector through an air blower and are cooled transiently to obtain the pre-dispersion finish products of various additives. The rubber additive pre-dispersion can be widely applied to the field of production of the rubber additives.
Description
Technical field
The present invention relates to the preparation method of a kind of rubber accelerator predispersion and this rubber accelerator predispersion, and the preparation method who comprises the rubber accelerator of this rubber accelerator predispersion.
Background technology
Rubber accelerator (as vulcanization accelerator etc.) major part is dry powder, and its volume density is less, easily flies upward, and particularly very easily adheres to the metallic surface under wetting conditions, and itself is difficult for being scattered under drying regime in the rubber batching.Rubber dry powder additive is in producing and using; a large amount of dust from flying is arranged; cause the working space dust to exceed standard easily; have a strong impact on the healthy (as skin irritation, respiratory tract of staff; influence reproduction and physiological well-being; cause allergy, suck toxic dust etc.); and can pollute (harmful etc. as hydrobiont being had toxicity, environment) to ecotope; be subjected to relevant laws and regulations and many-sided influence the such as protection environment etc., existing a lot of rubber item manufacturer all requires to use granulated product.
Existing rubber accelerator such as vulcanization accelerator can be made masterbatch by dry powder is carried out granulation, and convenient the interpolation used, and can avoid problems such as above-mentioned various contact dust simultaneously.The dry powder master batch technologies such as granulation or wet bonding granulation of directly pressurizeing by dry powder are produced; though these two kinds of method simple and fasts; the concentration of gained additive masterbatch is higher; but because working pressure is bigger in the manufacturing processed; form scleroma group in the powder developmental process easily; be difficult for scattering after being added into the rubber batching, can cause the ununiformity of batching.Not scattered scleroma group can be deposited in the rubber unvulcanizate, is not easy to filter out, and the physical and mechanical properties of resulting product can reduce or cause the products appearance defective, influences the qualification rate of goods, finally causes production cost to rise.Therefore, terminal client needs manufacturers improving aspect the convenience of the easily disperse of dry powder master batch and batch mixes.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, provides the strong and residual component of a kind of consistency to different rubber not influence the rubber accelerator predispersion of rubber product performance fully; And the method for a kind of manufacturing process this rubber accelerator predispersion of preparation easy, easy to make; In addition, the present invention also provides a kind of preparation to comprise the method for the rubber accelerator of described rubber accelerator predispersion.
The technical scheme that rubber accelerator predispersion of the present invention adopts is, accounting is calculated by weight, and it comprises following composition:
EPDM 40%～90%, and CPE 5%～40%, stearic acid 0.5%～10%.
The technical scheme that the preparation method of rubber accelerator predispersion of the present invention adopts is that this method may further comprise the steps:
(1) with after EPDM, CPE and the stearic acid weighing by a certain percentage, adds in the Banbury mixer;
(2) opened mixer mixing 5～10 minutes, temperature is controlled between 65 ℃～110 ℃, soften into soft agglomerate to mixture after, stop mixingly, blanking is standby, namely obtains the rubber accelerator predispersion.
It is that this method may further comprise the steps that the present invention comprises the technical scheme that the preparation method of the rubber accelerator of rubber accelerator predispersion adopts:
A, accounting calculating by weight, need carry out carrying out in pre-dispersed additives dry powder and 2%～10% RUBBER PROCESS OIL input Banbury mixer 8%～15% rubber accelerator predispersion, 50%～80% mixing, wherein, mixing time is 5～10 minutes, and melting temperature is controlled between 65 ℃～110 ℃;
B, be scattered in fully in the described rubber accelerator predispersion when need carry out pre-dispersed additives dry powder, and when in banburying chamber, forming soft rubber block, stop mixing;
C, the rubber block is carried out granulation, form the rubber accelerator particle at last.
In above-mentioned steps a, in mixing process, open Banbury mixer once, make that the sizing material in the Banbury mixer freely rolls for several times.
The rubber accelerator particle diameter that obtains in above-mentioned steps c is that 4～6mm, length are the regular cylindrical mobile property particle of 3～5mm.
Described RUBBER PROCESS OIL is the Rubber processing white mineral oil.
The invention has the beneficial effects as follows: because the present invention is with CPE(resin type chlorinatedpolyethylene) as the tackiness agent of described rubber accelerator predispersion, cooperate described EPDM(terpolymer EP rubber) and stearic acid, so, strong and residual component does not influence the rubber product performance to rubber accelerator predispersion of the present invention fully to the consistency of different rubber, the soft easy dispersion of gained predispersion particle, can reduce the time that material cooperates greatly, reduce the consumption of manpower, electric power; Simultaneously the homogeneity of rubber batching improves, and can not have not scattered scleroma group, avoids goods macroscopic irregularity to occur, defective situations such as rerum natura reduction.Because the dispersiveness of multiple additives all is improved, the rerum natura of gained rubber item can significantly promote.
In addition, the preparation method of rubber accelerator predispersion of the present invention and the described preparation method who includes the rubber accelerator of described rubber accelerator predispersion are manufacturing process making method easy, easy to make, can reduce staff's labour intensity widely.
Description of drawings
Fig. 1 is process flow sheet of the present invention;
Fig. 2 is the chemical constitution table of predispersion among the embodiment one;
Fig. 3 is the chemical constitution table of predispersion among the embodiment two;
Fig. 4 is the data contrast table of experiment one;
Fig. 5 is the data contrast table of experiment two.
Embodiment
As shown in Figure 1 and Figure 2, the present invention is directed to the surface property as dry powder rubber accelerators such as vulcanization accelerators, the back is with CPE(resin type chlorinatedpolyethylene after deliberation) as the binding agent of its predispersion, the good RUBBER PROCESS OIL of collocation and rubber batching intermiscibility power is come the preparation rubber accelerator is made into particulate state as wetting agent simultaneously.Utilize the prepared rubber accelerator particle that includes the rubber accelerator predispersion of the inventive method, stronger to the rubber compatibility of opposed polarity, can adapt to rubber batching continuous and automatic process requirements.Simultaneously the homogeneity of rubber batching improves, and can not have not scattered scleroma group, avoids goods macroscopic irregularity to occur, defective situations such as rerum natura reduction.
Rubber accelerator predispersion of the present invention accounting by weight calculates, and it comprises following composition:
EPDM 40%～90%, and CPE 5%～40%, stearic acid 0.5%～10%.
The preparation method of described rubber accelerator predispersion may further comprise the steps: (1) is with the EPDM(terpolymer EP rubber), CPE(resin type chlorinatedpolyethylene) and stearic acid weighing by a certain percentage after, add in the Banbury mixer; (2) opened mixer mixing 5～10 minutes, soften into soft agglomerate to mixture after, stop mixingly, blanking is standby, namely obtains the rubber accelerator predispersion.
As shown in Figure 1, the preparation method of described rubber accelerator may further comprise the steps: a, accounting calculating by weight, need carry out carrying out in pre-dispersed additives dry powder and 2%～10% RUBBER PROCESS OIL input Banbury mixer 8%～15% rubber accelerator predispersion, 50%～80% mixing, wherein, mixing time is 5～10 minutes, melting temperature control is between 65 ℃～110 ℃, in mixing process, open Banbury mixer once, make the sizing material in the Banbury mixer freely roll for several times, described RUBBER PROCESS OIL is the Rubber processing white mineral oil; B, be scattered in fully in the described rubber accelerator predispersion when need carry out pre-dispersed additives dry powder, and when in banburying chamber, forming soft rubber block, stop mixing; C, the rubber block is carried out granulation, form the rubber accelerator particle at last, the rubber accelerator particle diameter is that 4～6mm, length are the regular cylindrical mobile property particle of 3～5mm.
Below, the present invention is further illustrated with two specific embodiments.
Embodiment one:BTS is made into particulate product the dry powder accelerator M
As shown in Figure 1, take by weighing by the rubber accelerator predispersion 4.72KG for preparing in advance shown in the subordinate list among Fig. 21, drop in the Banbury mixer, add dry powder MBTS to be disperseed 36 KG, open Banbury mixer, slowly add the Rubber processing white mineral oil after, put down and add ram and dw, finish the banburying time of setting, about 5～8 minutes altogether.Open dw therebetween, rise and to add ram, make that sizing material freely rolls twice in the banburying storehouse, complete mixing even to guarantee.After treating that material is mixed to the more moistening block of formation softness fully in the banburying storehouse, can carry out pelletizing by blanking to forcing machine.Be about 5mm through namely obtaining diameter after the cooling of air blast collector, length is about the soft particle of cylindric mobile rubber of 3～5mm.
Embodiment two:S is prepared into granular product dry powder vulcanizer sulphur
As shown in Figure 1, take by weighing by the rubber accelerator predispersion 4.95KG for preparing in advance shown in the subordinate list among Fig. 32, drop in the Banbury mixer, add dry powder sulphur S44KG to be disperseed, open Banbury mixer, slowly add the Rubber processing white mineral oil after, put down and add ram and dw, finish the banburying time of setting, about 5～8 minutes altogether, open dw therebetween, rise adds ram, make that sizing material freely stands up twice in the banburying storehouse, with guarantee mixing fully evenly.After treating that material is mixed to the more moistening block of formation softness fully in the banburying storehouse, can carry out pelletizing by blanking to forcing machine.Be about 5mm through namely obtaining diameter after the cooling of air blast collector, length is about the soft particle of cylindric mobile rubber of 3～5mm.
The product of the present invention after for cooling drying carried out mixing application test.
Experiment one: the contrast test of MBTS-80CPE carrier
In the mixing experimentation of standard glue, the rubber accelerator particle that includes the rubber accelerator predispersion and the mix situation of rubber raw material on open mixing roll that detect by an unaided eye and prepared by the inventive method.The situation of in mixing process, not observing when adding powder additive to take place seriously to fly upward; Because the particle of producing is the soft rubber particle, its additive is scattered in advance, and its required mixing time obviously reduces with material powder additive product in contrast.The standard mixing time of this experiment is 15 minutes.Mixing time behind the use predispersion is 8～10 minutes.The otch degree of uniformity that detects by an unaided eye finds to exist the scleroma group that does not disperse.Its test correlation data as shown in Figure 4.Wherein, SBR1712 137.5phr, stearic acid 1phr, zinc oxide 5phr, carbon black HAF N330 75phr, perfume oil 12.5phr, processing aid WB212 1phr.
Experiment two: the contrast test of sulphur S-80CPE carrier
Carried out the control cure test to the powder additive powder with by the particulate additives product that the present invention prepares, vulcanized under the standard cure condition, the comparative experiments of physical and mechanical properties is carried out in test piece to gained rubber then.Experiment shows that the predispersion particle that uses CPE to produce as binding agent can't have influence on the physical and mechanical properties of rubber unvulcanizate.Its test correlation data as shown in Figure 5.Wherein, the test basic components is: SBR1712 137.5phr, stearic acid 1phr, zinc oxide 5phr, carbon black HAF N330 75phr, perfume oil 12.5phr, processing aid WB212 1phr.
The present invention can be widely used in the rubber accelerator production field.
Claims (6)
1. a rubber accelerator predispersion is characterized in that, accounting is calculated by weight, and it comprises following composition:
EPDM 40%～90%, resin type chlorinatedpolyethylene 5%～40%, stearic acid 0.5%～10%.
2. a method for preparing rubber accelerator predispersion as claimed in claim 1 is characterized in that, this method may further comprise the steps:
(1) with after EPDM, resin type chlorinatedpolyethylene and the stearic acid weighing by a certain percentage, adds in the Banbury mixer;
(2) opened mixer mixing 5～10 minutes, temperature is controlled between 65 ℃～110 ℃, soften into soft agglomerate to mixture after, stop mixingly, blanking is standby, namely obtains the rubber accelerator predispersion.
3. a preparation method who comprises the rubber accelerator of rubber accelerator predispersion as claimed in claim 1 is characterized in that, this method may further comprise the steps:
A, accounting calculating by weight, need carry out carrying out in pre-dispersed additives dry powder and 2%～10% RUBBER PROCESS OIL input Banbury mixer 8%～15% rubber accelerator predispersion, 50%～80% mixing, mixing time is 5～10 minutes, melting temperature control is between 65 ℃～110 ℃, and the weight accounting sum of described rubber accelerator predispersion, described additives dry powder and described RUBBER PROCESS OIL is 100%;
B, be scattered in fully in the described rubber accelerator predispersion when need carry out pre-dispersed additives dry powder, and when in banburying chamber, forming soft rubber block, stop mixing;
C, the rubber block is carried out granulation, form the rubber accelerator particle at last.
4. the preparation method of rubber accelerator according to claim 3 is characterized in that, in described step a, opens Banbury mixer once in mixing process, makes that the sizing material in the Banbury mixer freely rolls for several times.
5. the preparation method of rubber accelerator according to claim 3, it is characterized in that: the rubber accelerator particle diameter that obtains in described step c is that 4～6mm, length are the regular cylindrical mobile property particle of 3～5mm.
6. the preparation method of rubber accelerator according to claim 3, it is characterized in that: described RUBBER PROCESS OIL is the Rubber processing white mineral oil.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102816390B (en) * | 2012-09-07 | 2014-06-11 | 青岛开世密封工业有限公司 | Blending type rubber compound and preparation method thereof |
| CN103554685A (en) * | 2013-10-24 | 2014-02-05 | 科迈化工股份有限公司 | Vulcanization accelerator CBS (N-cyclohexyl-2-benzothiazole sulfenamide) masterbatch particle composition for rubber and preparation method thereof |
| CN103554682A (en) * | 2013-10-24 | 2014-02-05 | 科迈化工股份有限公司 | Masterbatch particle composition of vulcanization accelerator 2-mercaptobenzothiazole (MBT) for rubber and preparation method thereof |
| CN103554681A (en) * | 2013-10-24 | 2014-02-05 | 科迈化工股份有限公司 | Masterbatch particle composition of vulcanization accelerator Diphenylguanidine (DPG) for rubber and preparation method thereof |
| CN103554683A (en) * | 2013-10-24 | 2014-02-05 | 科迈化工股份有限公司 | Masterbatch particle composition of vulcanization accelerator N-tert-butyl-2-benzothiazyl sulfonamide (TBBS) for rubber and preparation method thereof |
| CN103554684A (en) * | 2013-10-24 | 2014-02-05 | 科迈化工股份有限公司 | Masterbatch particle composition of vulcanization accelerator 2,2'-dibenzothiazole disulfide (MBTS) for rubber and preparation method thereof |
| CN103819733B (en) * | 2014-02-21 | 2016-03-23 | 宁波硫华聚合物有限公司 | The pre-dispersed masterbatch particles of weather strip for automobile Environmental-protection comprehensive promotor and preparation thereof |
| CN105713410B (en) * | 2016-02-03 | 2018-11-06 | 彭均 | Predispersed masterbatch and preparation method thereof |
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| WO2002072675A2 (en) * | 2001-03-12 | 2002-09-19 | Vipin Sharma | Predispersions, compositions therefore, and processes for preparing same |
| CN102127247A (en) * | 2011-04-22 | 2011-07-20 | 连云港连连化学有限公司 | Environment-friendly defoaming masterbatch particles for rubber, and preparing and packaging methods thereof |
| CN102134354A (en) * | 2011-04-22 | 2011-07-27 | 连云港连连化学有限公司 | Pre-dispersing masterbatch particle of liquid rubber chemicals and preparation method thereof |
| CN102352062A (en) * | 2011-09-19 | 2012-02-15 | 河南省汤阴县永新助剂厂 | Preparation method of rubber antiscroching agent CTP (cytidine triphosphate) pre-dispersion masterbatch |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002072675A2 (en) * | 2001-03-12 | 2002-09-19 | Vipin Sharma | Predispersions, compositions therefore, and processes for preparing same |
| CN102127247A (en) * | 2011-04-22 | 2011-07-20 | 连云港连连化学有限公司 | Environment-friendly defoaming masterbatch particles for rubber, and preparing and packaging methods thereof |
| CN102134354A (en) * | 2011-04-22 | 2011-07-27 | 连云港连连化学有限公司 | Pre-dispersing masterbatch particle of liquid rubber chemicals and preparation method thereof |
| CN102352062A (en) * | 2011-09-19 | 2012-02-15 | 河南省汤阴县永新助剂厂 | Preparation method of rubber antiscroching agent CTP (cytidine triphosphate) pre-dispersion masterbatch |
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