CN102030868A - Prilling binder of rubber vulcanization accelerator DZ (N,N-Dicyclohexyl-2-benzothiazolsulfene amide) and prilling method - Google Patents
Prilling binder of rubber vulcanization accelerator DZ (N,N-Dicyclohexyl-2-benzothiazolsulfene amide) and prilling method Download PDFInfo
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- CN102030868A CN102030868A CN2010105582123A CN201010558212A CN102030868A CN 102030868 A CN102030868 A CN 102030868A CN 2010105582123 A CN2010105582123 A CN 2010105582123A CN 201010558212 A CN201010558212 A CN 201010558212A CN 102030868 A CN102030868 A CN 102030868A
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Abstract
The invention discloses a prilling binder of rubber vulcanization accelerator DZ (N,N-Dicyclohexyl-2-benzothiazolsulfene amide) and a prilling method. The prilling binder of rubber vulcanization accelerator DZ comprises the following components in parts by weight: 100 to 140 parts of povidone, 50 to 65 parts of vinyl acetate, 50 to 65 parts of liquid paraffin, 4 to 8 parts of emulsifying agent, 0.5 to 1 part of polyvinyl alcohol, 0.5 to 1 part of dispersing agent, 0.1 to 0.5 part of sodium bicarbonate, 0.01 to 0.1 part of glycerine and 180 to 240 parts of water. The prilling methof provided by the invention is simple in process and easy for industrialization. The DPG (dipropylene glycol) product prepared by the method has the primary prilling rate of more than 80% and the average rigidity of about 2N, which can meet the requirements of users completely without the crushing of the particles during packaging and moving. The quality of the product is proved to conform to the national first grade standard by the determination of the test. The binder provided by the invention has the advantages of reasonable formula, strong compatibility with various rubbers, less consumption, good effect, high primary prilling rate of the product, and no adverse effect on the physical and chemical properties and vulcanization property of the product.
Description
Technical field
The present invention relates to a kind of thiofide N, the adhesive for granulating and the graining method for producing of N-dicyclohexyl-2-[4-morpholinodithio sulphenamide (DZ) belong to the DZ technical field of granulating production.
Background technology
Rubber vulcanization accelerator DZ is a kind of good slow effect type promotor, dispersing property is good in rubber, the time of burning in sizing material is long, and the processing safety height is applicable to that the big sizing material of thick product and high reactivity reinforcement dosage is applicable to that also polybutadiene rubber or regenerated rubber are main sizing material.The mechanical property of the vulcanized rubber of producing with this product, especially dynamic property is relatively good, the elasticity and the intensity height that composes oneself.Being mainly used in and making tire, adhesive tape and anti-vibration article, is one of main raw material of producing thick of radial, wire belt and rubber assembling etc., has good development prospect.Along with the increasingly stringent that requires of environmental protection management and industrial use, powder-like product is more and more substituted by granulated product in industry.Granulated product and powder-like product relatively have following advantage: not having dust from flying in the use, is user friendly product; Granulated product does not have surface attachment, disperses easily, easier metering in the auxiliary agent product uses.The granulation of rubber ingredients is technological processs of the finished product of auxiliary agent production process, and the agglomeration technique level of the integral body of China's rubber ingredients is not high at present, and development is also uneven, and the ratio of granulation product is on the low side.That the auxiliary agent agglomeration technique comprises is oil-filled, non-slurry pelletizing, wet granulation, melt pelletization and the pre-dispersed granulation of carrier.The granulation of rubber ingredients all has crucial meaning to auxiliary agent factory and rubber mill, has reduced the pollution of dust, has increased the accuracy of source mill's batching, ensures that to improving the sizing material physicals quality product has played promoter action.
Two kinds of non-slurry pelletizing, wet granulations are generally adopted in present stage China DZ granulation.Non-slurry pelletizing is after DZ siccative and binding agent, water etc. are mixed in proportion, and through use the belt dryer drying after extruding or the spray method granulation, dry back product gets finished product after vibratory screening apparatus is handled.And wet granulation is after DZ wet feed and binding agent, water etc. are mixed in proportion, after granulation, drying finished product.Excessive or select improperly if add binding agent in granulation process, can cause particle really up to the mark, difficulty etc. during dispersion, but if do not add or add very little, then cause cohesive force not enough, granulating rate is too low, and particle scatters again in the transportation handling process, does not reach the granulation purpose.And granulated product in application process because problem such as there is the difficulties in dispersion inequality in the hardness problem of grain, and mixing time is long.
Summary of the invention
In order to solve problems of the prior art, the invention provides a kind of accelerator DZ adhesive for granulating and prilling process thereof, overcome that granulated pellet is really up to the mark, difficulties in dispersion, granulating rate is low and the unequal problem of granulated product difficulties in dispersion in application process.
The present invention is achieved by the following technical solutions: a kind of rubber vulcanization accelerator DZ adhesive for granulating, adopt the one-tenth of following mass fraction to be grouped into:
Polyvidone: 100-140 part
Vinyl acetate: 50-65 part
Whiteruss: 50-65 part
Emulsifying agent: 4-8 part
Polyvinyl alcohol: 0.5-1 part
Dispersion agent: 0.5-1 part
Sodium bicarbonate: 0.1-0.5 part
Glycerol: 0.01-0.1 part
Water: 180-240 part
Wherein: emulsifying agent is polyoxyethylene nonylphenol ether, polyoxyethylene octylphenol ether, octadecane alcohol radical Soxylat A 25-7 etc.
Dispersion agent is sodium laurylsulfonate, tripoly phosphate sodium STPP, fatty acid polyglycol ester etc.
A kind of rubber vulcanization accelerator DZ prilling process may further comprise the steps:
At first, binding agent is added in the DZ wet feed, after stirring, add in the tablets press, make wet product material from the head die plate hole, extrude the cylindrical particle that uniform diameter is 2 ± 0.2mm by screw rod transmission;
Secondly,, separate grain and powder with vibration screen through 65-75 ℃ of drying of belt dryer, the direct finished product packing of granular product on the screen cloth, powder returns in the agitator kettle stirring-granulating again under the screen cloth.
The mass percent that the add-on of described binding agent accounts for DZ material dry product is 0.5%～3%.
Beneficial effect of the present invention is: this method is directly carried out granulation by the DZ wet feed, avoided dry problem twice, manpower and materials have been saved, reduce energy consumption, in granulation process, added a kind of novel binding agent, made granulating rate height of material, gained DZ grain intensity is big, Pulverization ratio is low, but to the physicochemical property of product and vulcanization reaction character without any influence, meet the environmental protection policy of country.Use granulating rate of this method granulation DZ product up to more than 80%, average hardness can reach customer requirements fully about 2N, the grain breakage phenomenon do not occur in the packing moving process.The DZ grain is after chemical examination is measured, and its quality index meets country-level product standard.This DZ granulated product is not observed serious dust from flying phenomenon in mixing process, do not find to mix uneven phenomenon, compares with powder-like product, and DZ grain mixing time, vulcanization rate, time of scorch, tensile yield etc. all do not have significant difference.Owing in binding agent, added a spot of dispersion agent, to compare with other DZ granulated products, its application performance (mixing time, vulcanization rate, time of scorch, tensile yield etc.) has certain advantage.This procedure is simple, is easy to industrialization, and binder formula is reasonable, contains binding agent, linking agent, dispersion agent, swelling agent etc., and all very strong with the consistency of multiple rubber, consumption is few, and is effective, granulating rate height of product, and product performance are not had influence.
Embodiment
Embodiment 1:
According to subordinate list 1 preparation binding agent; the binding agent that the prepares ratio with the weight 0.5% of DZ dry product is joined in the agitator kettle with the DZ wet feed; behind abundant stirring and evenly mixing; add in the tablets press; make wet product material from the head die plate hole, extrude the cylindrical particle that uniform diameter is 2 ± 0.2mm by screw rod transmission; after through 65 ℃ of dryings of belt dryer; separate grain and powder with vibration screen; the direct finished product packing of granular product on the screen cloth, powder returns in the agitator kettle stirring-granulating again under the screen cloth.Use granulating rate of this method granulation product up to more than 80%, average hardness can reach customer requirements fully about 2.00N, and product performance are compared indifference with the DZ powder.
Subordinate list 1: binding agent becomes to be grouped into
| Composition | Parts by weight |
| Polyvidone | 100 |
| Vinyl acetate | 50 |
| Whiteruss | 50 |
| Polyoxyethylene nonylphenol ether | 4 |
| Polyvinyl alcohol | 0.5 |
| Sodium laurylsulfonate | 0.5 |
| Sodium bicarbonate | 0.1 |
| Glycerol | 0.01 |
| Water | 180 |
Embodiment 2:
According to subordinate list 2 preparation binding agents; the binding agent that the prepares ratio with the weight 1.5% of DZ dry product is joined in the agitator kettle with the DZ wet feed; behind abundant stirring and evenly mixing; add in the tablets press; make wet product material from the head die plate hole, extrude the cylindrical particle that uniform diameter is 2 ± 0.2mm by screw rod transmission; after through 70 ℃ of dryings of belt dryer; separate grain and powder with vibration screen; the direct finished product packing of granular product on the screen cloth, powder returns in the agitator kettle stirring-granulating again under the screen cloth.Use granulating rate of this method granulation product up to more than 82.0%, average hardness can reach customer requirements fully about 2.00N, and product performance are compared indifference with the DZ powder.
Subordinate list 2: binding agent becomes to be grouped into
| Composition | Weight/g |
| Polyvidone | 120 |
| Vinyl acetate | 60 |
| Whiteruss | 58 |
| Polyoxyethylene octylphenol ether | 6 |
| Polyvinyl alcohol | 0.8 |
| Tripoly phosphate sodium STPP | 0.7 |
| Sodium bicarbonate | 0.3 |
| Glycerol | 0.08 |
| Water | 210 |
Embodiment 3:
According to subordinate list 3 preparation binding agents; the binding agent that the prepares ratio with the weight 3% of DZ dry product is joined in the agitator kettle with the DZ wet feed; behind abundant stirring and evenly mixing; add in the tablets press; make wet product material from the head die plate hole, extrude the cylindrical particle that uniform diameter is 2mm by screw rod transmission, after through 75 ℃ of dryings of belt dryer, separate grain and powder with vibration screen; the direct finished product packing of granular product on the screen cloth, powder returns in the agitator kettle stirring-granulating again under the screen cloth.Use granulating rate of this method granulation product up to more than 83.5%, average hardness can reach customer requirements fully about 2.00N, and product performance are compared indifference with the DZ powder.
Subordinate list 3: binding agent becomes to be grouped into
| Composition | Weight |
| Polyvidone | 140 |
| Vinyl acetate | 65 |
| Whiteruss | 65 |
| Octadecane alcohol radical Soxylat A 25-7 | 8 |
| Polyvinyl alcohol | 1 |
| Fatty acid polyglycol ester | 1 |
| Sodium bicarbonate | 0.5 |
| Glycerol | 0.1 |
| Water | 240 |
Claims (5)
1. a rubber vulcanization accelerator DZ adhesive for granulating is characterized in that, adopts the one-tenth of following mass fraction to be grouped into:
Polyvidone: 100-140 part
Vinyl acetate: 50-65 part
Whiteruss: 50-65 part
Emulsifying agent: 4-8 part
Polyvinyl alcohol: 0.5-1 part
Dispersion agent: 0.5-1 part
Sodium bicarbonate: 0.1-0.5 part
Glycerol: 0.01-0.1 part
Water: 180-240 part
2. binding agent according to claim 1 is characterized in that described emulsifying agent is a kind of in polyoxyethylene nonylphenol ether, polyoxyethylene octylphenol ether, the octadecane alcohol radical Soxylat A 25-7.
3. binding agent according to claim 1 is characterized in that described dispersion agent is a kind of in sodium laurylsulfonate, tripoly phosphate sodium STPP, the fatty acid polyglycol ester.
4. a rubber vulcanization accelerator DZ prilling process that adopts the described binding agent of claim 1 is characterized in that, may further comprise the steps:
At first, binding agent is added in the DZ wet feed, after stirring, add in the tablets press, make wet product material from the head die plate hole, extrude the cylindrical particle of homogeneous diameter by screw rod transmission;
Secondly,, separate grain and powder with vibration screen through 65-75 ℃ of drying of belt dryer, the direct finished product packing of granular product on the screen cloth, powder returns in the agitator kettle stirring-granulating again under the screen cloth.
5. according to the described rubber vulcanization accelerator DZ prilling process of claim 4, it is characterized in that the mass percent that the add-on of described binding agent accounts for DZ material dry product is 0.5%～3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105582123A CN102030868A (en) | 2010-11-24 | 2010-11-24 | Prilling binder of rubber vulcanization accelerator DZ (N,N-Dicyclohexyl-2-benzothiazolsulfene amide) and prilling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105582123A CN102030868A (en) | 2010-11-24 | 2010-11-24 | Prilling binder of rubber vulcanization accelerator DZ (N,N-Dicyclohexyl-2-benzothiazolsulfene amide) and prilling method |
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| Publication Number | Publication Date |
|---|---|
| CN102030868A true CN102030868A (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105582123A Pending CN102030868A (en) | 2010-11-24 | 2010-11-24 | Prilling binder of rubber vulcanization accelerator DZ (N,N-Dicyclohexyl-2-benzothiazolsulfene amide) and prilling method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105504351A (en) * | 2015-12-17 | 2016-04-20 | 科迈化工股份有限公司 | Production method for prilling binding agent of rubber vulcanization accelerator DZ |
-
2010
- 2010-11-24 CN CN2010105582123A patent/CN102030868A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105504351A (en) * | 2015-12-17 | 2016-04-20 | 科迈化工股份有限公司 | Production method for prilling binding agent of rubber vulcanization accelerator DZ |
| CN105504351B (en) * | 2015-12-17 | 2017-12-29 | 科迈化工股份有限公司 | The production method of the Granulating Bonding Agent of rubber vulcanization accelerator DZ |
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Application publication date: 20110427 |