CN102031066A - Accelerant TBSI granulation binder and TBSI granulation method - Google Patents
Accelerant TBSI granulation binder and TBSI granulation method Download PDFInfo
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- CN102031066A CN102031066A CN2010105582119A CN201010558211A CN102031066A CN 102031066 A CN102031066 A CN 102031066A CN 2010105582119 A CN2010105582119 A CN 2010105582119A CN 201010558211 A CN201010558211 A CN 201010558211A CN 102031066 A CN102031066 A CN 102031066A
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Abstract
The invention relates to an accelerant N-tertiary butyl bi (2-benzothiazole) sulfenimide (TBSI) granulation binder and a TBSI granulation method. The binder consists of polyvinyl alcohol, povidone, vinyl acetate, liquid paraffin, emulsifier, polyoxyethylene, dispersant, NaHCO3 and water. The method comprises the following steps of: adding the binder into TBSI wet materials, fully stirring the binder and the wet materials uniformly, adding the mixture into a granulator, and extruding the wet materials into uniform cylindrical granules with diameters of 2+/-0.2 millimeters from a head template hole by delivery of a screw; and drying the granules through a belt dryer at the temperature of between 70 and 85 DEG C, separating the granules and powder by using a vibrating screen, and directly packing the granular products on the screen into finished products. The granulation method provided by the invention has simple process and is easy for industrialization; and the one-time granulation rate of the TBSI products granulated by using the method reaches over 80 percent, the average hardness is about 2N, the diameter is 2+/-0.2 millimeters, the granules can fully meet the requirements of users, the granules are not broken in actual packing and moving processes, and by testing and measuring, the quality indexes of the granules accord with the national grade 1 product standards.
Description
Technical field
The present invention relates to the prilling process of two (2-[4-morpholinodithio) sulphenamides (TBSI) of a kind of rubber vulcanization accelerator N-tertiary butyl, specifically, relate to the prilling process of a kind of promotor TBSI adhesive for granulating and TBSI.
Background technology
Promotor TBSI is the universal promotor of a kind of rubber, can be widely used in natural rubber, cis-1,4-polybutadiene rubber, polyisoprene rubber, styrene-butadiene rubber(SBR) etc., the danger that it had both avoided secondary amine accelerant to produce nitrosamine in vulcanization of rubber process, can replace the complex body of another kind of primary amine class accelerator NS and anti-scorching agent CTP again and single use is a kind of up-and-coming promotor product.Along with the increasingly stringent that requires of environment protection health management and industrial use, for fear of problems such as dust, 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 promotor product uses.The granulation of rubber accelerator is the technological process of the finished product of promotor production process, and the agglomeration technique level of the integral body of China's rubber accelerator 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 TBSI granulation.Non-slurry pelletizing is after TBSI 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 TBSI 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.
The CBS grain often owing to excessive difficulties in dispersion, the inequality of causing of hardness of grain, causes problems such as mixing time length in application process, if efflorescence does not reach the granulation purpose but the hardness of reduction grain then can make its hardness deficiency.Therefore, selection of binder is extremely important, should make institute's granulation that certain rigidity is arranged, and makes in its use unaffected again.
Summary of the invention
First technical problem that the present invention will solve provides a kind of binding agent that promotor TBSI granulation is produced that is used for, make granulating rate height of material, granulated product intensity is big, and Pulverization ratio is low, and to the physicochemical property of TBSI grain and vulcanization reaction character without any influence.
Second technical problem that the present invention will solve provides a kind of promotor TBSI prilling process, and this procedure is simple, is easy to industrialization, directly carries out granulation by the TBSI wet feed, avoids drying twice, has saved manpower and materials, has reduced energy consumption.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A kind of thiofide TBSI adhesive for granulating, adopt the one-tenth of following mass fraction to be grouped into:
Polyvinyl alcohol: 80-110 part,
Polyvidone: 80-110 part,
Vinyl acetate: 60-70 part,
Whiteruss: 40-50 part,
Emulsifying agent: 1-5 part,
Polyoxyethylene: 0.5-1 part,
Dispersion agent: 0.5-1 part,
NaHCO
3: 0.1-0.5 part,
Water: 150-200 part.
Binding agent of the present invention is applied to the prilling process of thiofide TBSI, and method is as follows:
At first, binding agent is added in the TBSI 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;
Then, through 70-85 ℃ of drying of belt dryer, separate grain and powder, the direct finished product packing of granular product on the screen cloth with vibration screen.
Separate grain and powder with vibration screen, 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 TBSI material dry product is 1 ‰～2%.The aqueous quality of described TBSI wet feed≤25%.
Prilling process process provided by the invention is simple, be easy to industrialization, use granulating rate of this method granulation TBSI product up to more than 80%, average hardness is about 2N, diameter is 2 ± 0.2mm, can reach customer requirements fully, does not also occur the grain breakage phenomenon in the actual packaging moving process, after chemical examination was measured, its quality index met country-level product standard.
The TBSI granulated product is compared with powder-like product in mixing process, and its mixing time, vulcanization rate, time of scorch, tensile yield etc. all do not have significant difference.
Binder formula provided by the invention is reasonable, and all very strong with the consistency of multiple rubber, consumption is few, and is effective, granulating rate height of product, and to the physicochemical property of product and vulcanization reaction character without any detrimentally affect.Owing in binding agent, also added a spot of dispersion agent, to compare with other TBSI granulated products, its application performance has certain advantage as mixing time, vulcanization rate, time of scorch, tensile yield etc.
Embodiment
The present invention is described in further detail below by specific embodiment:
Example 1:
According to subordinate list 1 preparation binding agent; the binding agent that the prepares ratio with the weight 1 ‰ of TBSI dry product is joined in the agitator kettle with the TBSI wet feed; the aqueous quality of TBSI wet feed is 25%; 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 80%, average hardness can reach customer requirements fully about 2.00N, and product performance are compared indifference with the TBSI powder.
Subordinate list 1: binding agent becomes to be grouped into
| Composition | Parts by weight |
| Polyvinyl alcohol | 80 |
| Polyvidone | 80 |
| Vinyl acetate | 60 |
| Whiteruss | 40 |
| Polyoxyethylene nonylphenol ether | 1 |
| Polyoxyethylene | 0.5 |
| Sodium laurylsulfonate | 0.5 |
| NaHCO 3 | 0.1 |
| Water | 150 |
Example 2:
According to subordinate list 2 preparation binding agents; the binding agent that the prepares ratio with the weight 5 ‰ of TBSI dry product is joined in the agitator kettle with the TBSI wet feed; the aqueous quality of TBSI wet feed is 15%; 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 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 81.7%, average hardness can reach customer requirements fully about 2.00N, and product performance are compared indifference with the TBSI powder.
Subordinate list 2: binding agent becomes to be grouped into
| Composition | Parts by weight |
| Polyvinyl alcohol | 90 |
| Polyvidone | 100 |
| Vinyl acetate | 65 |
| Whiteruss | 45 |
| Polyoxyethylene octylphenol ether | 3 |
| Polyoxyethylene | 0.8 |
| Tripoly phosphate sodium STPP | 0.7 |
| NaHCO 3 | 0.3 |
| Water | 180 |
Example 3:
According to subordinate list 2 preparation binding agents; the binding agent that the prepares ratio with the weight 2% of TBSI dry product is joined in the agitator kettle with the TBSI wet feed; the aqueous quality of TBSI wet feed is 2%; 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 85 ℃ 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 TBSI powder.
Subordinate list 3: binding agent becomes to be grouped into
| Composition | Parts by weight |
| Polyvinyl alcohol | 110 |
| Polyvidone | 110 |
| Vinyl acetate | 70 |
| Whiteruss | 50 |
| Octadecane alcohol radical Soxylat A 25-7 | 5 |
| Polyoxyethylene | 1 |
| Fatty acid polyglycol ester | 1 |
| NaHCO 3 | 0.5 |
| Water | 200 |
Although above the preferred embodiments of the present invention are described; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, these all belong within protection scope of the present invention.
Claims (7)
1. a thiofide TBSI adhesive for granulating is characterized in that, adopts the one-tenth of following mass fraction to be grouped into:
Polyvinyl alcohol: 80-110 part,
Polyvidone: 80-110 part,
Vinyl acetate: 60-70 part,
Whiteruss: 40-50 part,
Emulsifying agent: 1-5 part,
Polyoxyethylene: 0.5-1 part,
Dispersion agent: 0.5-1 part,
NaHCO
3: 0.1-0.5 part,
Water: 150-200 part.
2. binding agent as claimed in claim 1 is characterized in that described emulsifying agent is polyoxyethylene nonylphenol ether, polyoxyethylene octylphenol ether or octadecane alcohol radical Soxylat A 25-7.
3. binding agent as claimed in claim 1 is characterized in that described dispersion agent is sodium laurylsulfonate, tripoly phosphate sodium STPP or fatty acid polyglycol ester.
4. the binding agent of claim 1 is applied to the prilling process of thiofide TBSI, it is characterized in that method is as follows:
At first, binding agent is added in the TBSI 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;
Then, through 70-85 ℃ of drying of belt dryer, separate grain and powder, the direct finished product packing of granular product on the screen cloth with vibration screen.
5. according to the described prilling process of claim 4, it is characterized in that, separate grain and powder with vibration screen, powder returns in the agitator kettle stirring-granulating again under the screen cloth.
6. according to the described prilling process of claim 4, it is characterized in that the mass percent that the add-on of described binding agent accounts for TBSI material dry product is 1 ‰～2%.
7. according to the described prilling process of claim 4, it is characterized in that the aqueous quality of described TBSI wet feed≤25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105582119A CN102031066A (en) | 2010-11-24 | 2010-11-24 | Accelerant TBSI granulation binder and TBSI granulation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105582119A CN102031066A (en) | 2010-11-24 | 2010-11-24 | Accelerant TBSI granulation binder and TBSI granulation method |
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|---|---|
| CN102031066A true CN102031066A (en) | 2011-04-27 |
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|---|---|---|---|
| CN2010105582119A Pending CN102031066A (en) | 2010-11-24 | 2010-11-24 | Accelerant TBSI granulation binder and TBSI granulation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876285A (en) * | 2012-09-25 | 2013-01-16 | 科迈化工股份有限公司 | Rubber vulcanization accelerator NS granulating binder and granulating method thereof |
-
2010
- 2010-11-24 CN CN2010105582119A patent/CN102031066A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876285A (en) * | 2012-09-25 | 2013-01-16 | 科迈化工股份有限公司 | Rubber vulcanization accelerator NS granulating binder and granulating method thereof |
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Application publication date: 20110427 |