CN103554321A - Production technology for chloroprene rubber - Google Patents
Production technology for chloroprene rubber Download PDFInfo
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- CN103554321A CN103554321A CN201310450709.7A CN201310450709A CN103554321A CN 103554321 A CN103554321 A CN 103554321A CN 201310450709 A CN201310450709 A CN 201310450709A CN 103554321 A CN103554321 A CN 103554321A
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Abstract
Relating to the rubber production field, the invention discloses a production technology for chloroprene rubber. The technology comprises the processes of: material preparation, polymerization, chain scission, coagulation, rubber mixing, semi-finished product cutting and vulcanization. After the material is sent into a polymerization kettle, an initiator and a conditioning agent are added, and at the end of reaction, an alkaline substance and tetramethylthiuram disulfide are added, so that the material is not easy to adhere. A semi-finished rubber sheet product has good stiffness, is difficult to deform, and also has very good tensile strength. After polymerization, precise fusion is performed on the raw material through condensation and grain treatment, so that the tensile strength, elongation, burning resistant performance, water resistance, cold resistance and air permeability are improved very effectively. Then by means of rubber mixing, semi-finished product cutting, vulcanization and other treatment, the hardening resistance of the product is effectively improved, so that the product can be placed for a long time and has good plasticity.
Description
Technical field
The invention belongs to rubber production field, more particularly, the present invention relates to a kind of production technique of chloroprene rubber.
Background technology
Chloroprene rubber is called for short CA, chloroprene rubber is by 2-chloro-1, 3 divinylic monomers make by letex polymerization, its energy enough sulphur and 2, 3-bis-chloro-1, 3-divinyl (ACR) carrys out modification, chloroprene rubber can also be applied to different technical fields, mainly to be applied in rubber industry field, but it is also very important as the starting material of tackiness agent, and there is different application, dipped goods for example, extruded foam material, application number is 200710024321.5 patent of invention, there is good corona-resistance property, manufacture craft is good, the feature that yield rate is high, but, the easy adhesion of material in this production technique, the work in-process film property endured is poor, easily distortion, and its tensile strength is not high, extend rate variance, resistance to flame, the performances such as water tolerance, winter hardiness and ventilation property are all not high, and over-all properties is poor, in addition, product is parked 2-4 after week, still, to harden, loses plasticity.
Summary of the invention
Problem to be solved by this invention is to provide a kind of production technique of a kind of chloroprene rubber of good combination property.
To achieve these goals, the technical scheme that the present invention takes is: a kind of production technique of chloroprene rubber, comprises the steps:
(1) preparation: the first step, refining raw material: starting material comprise chloroprene and mersolates, second step, obtain solution.
(2) polymerization: the first step, feeding: the solution that step (1) is prepared is sent into polymeric kettle, second step, reinforced: to add initiator and conditioning agent, the 3rd step, temperature adjustment: regulate 35-45 ℃ of temperature values, keep 2-3h, the 4th step, termination reaction: add terminator;
(3) chain rupture: add alkaline matter and tetramethyl-thiuram disulfide;
(4) cohesion: the first step, transferred material, second step: separate out: add flocculation agent, the 3rd step, particle disposal;
(5) refining glue: the first step, drying glue, second step, plastic cement, the 3rd step, mixed glue.
(6) work in-process cutting: add Zinic stearas;
(7) sulfuration: the first step, mucous membrane, second step, rotten eye.
Preferably, in described step (1), obtain solution processing step is as follows:
(1) dry:
(2) cooling:
(3) metering;
(4) add auxiliary: first add rosin, keep 10-20 minutes, then add softening water, sodium hydroxide and dispersion agent, keep 10-20 minutes.
Preferably, in described step (1), the quality ratio of chloroprene and mersolates is 20-25.
Preferably, in described step (2), initiator is Potassium Persulphate, and conditioning agent is mercaptan, and the alkaline matter in described step (3) is sodium hydroxide, and in described step (4), flocculation agent is comprised of sodium-chlor and calcium chloride, and its proportionlity is 5:2.
Preferably, the amount of described Potassium Persulphate is 0.2-1.0g, and the amount of mercaptan is 0.5-0.7g.
Preferably, in described step (4), particle disposal technique comprises the steps:
(1) washing;
(2) extrusion dehydration;
(3) dry;
(4) face powder;
(5) cut and cut
Beneficial effect: adopt in technical scheme steps of the present invention (2) material is delivered in polymeric kettle, add initiator and conditioning agent, at 35-45 ℃, keep 2-3h, after termination reaction, add alkaline matter and tetramethyl-thiuram disulfide, make like this material be not easy adhesion, the work in-process film property endured is good, be difficult to distortion, and, its tensile strength is fine, after polymerization, pass through again cohesion, particle disposal, starting material are carried out to accurate fusion, very effective raising tensile strength, elongation, resistance to flame energy, water resistance, cold tolerance and ventilation property, pass through again afterwards rubber mixing technique, by drying glue, plastic cement, mixed glue series of steps, passing through the processing such as work in-process cutting and sulfuration, effectively raise the resistance to Hardenability of product, can place for a long time, plasticity is good.
Obtain solution technique by dry, cooling, measure and add the techniques such as auxiliary, first add rosin, the materials such as softening water, sodium hydroxide and dispersion agent, team member repeatedly kicks into and has gone a series of purifying treatment and performance and process, effectively removed the interior miscellaneous materials of raw material and the proportionlity of each composition in raw material has been determined to optimization, for follow-up polymerization technique improves the preparation work that non-product is good, the raising tool of product performance is had certain effect.
Initiator is Potassium Persulphate, conditioning agent is mercaptan, flocculation agent is comprised of sodium-chlor and calcium chloride, these materials can play certain booster action, and all easily separated, very little on the impact of raw material, even if decompose, also can become a part for raw material, not affect the performance of product, meet environment-friendly engineering.
Particle disposal technique by washing, extrusion dehydration, be dried, apply powder and cut and the series of processes such as cut, material after cohesion is carried out to the cleaning work of impurity and auxiliary, meanwhile, slough moisture, and work in-process are cut and cut rest and reorganization, thereby reach the effect of refining of product.
Embodiment
Terminator: take potassium sulfocyanate and hydrazonium sulfate as raw material, feed ratio hydrazonium sulfate: water: the 33% potassium sulfocyanate aqueous solution: acetone=1:2.5:3.63:0.93 makes.
embodiment 1:
This technique divides seven steps to carry out, first carry out (1) preparation: the first step, refining raw material: starting material comprise chloroprene and mersolates, the quality ratio of chloroprene and mersolates is 20-25, second step, obtain solution, carry out again (2) polymerization: the first step, feeding: the solution that step (1) is prepared is sent into polymeric kettle, second step, reinforced: to add initiator and conditioning agent, wherein initiator is Potassium Persulphate, conditioning agent is mercaptan, the amount of Potassium Persulphate is 0.2g, the amount of mercaptan is 0.5g, the 3rd step, temperature adjustment: regulate 35 ℃ of temperature values, keep 2h, the 4th step, termination reaction: add terminator, then carry out (3) chain rupture: add alkaline matter and tetramethyl-thiuram disulfide, carry out afterwards (4) cohesion: the first step, transferred material, second step: separate out: add flocculation agent, wherein flocculation agent is comprised of sodium-chlor and calcium chloride, its proportionlity is 5:2, the 3rd step, particle disposal, first carry out washing process, carry out again extrusion dehydration technique, carry out again technique dry, then the technique of applying powder, finally cut and cut technique, then carry out (5) refining glue: the first step, drying glue, second step, plastic cement, the 3rd step, mixed glue.Carry out again (6) work in-process cutting: add Zinic stearas, finally carry out (7) sulfuration: the first step, mucous membrane, second step, rotten eye.
embodiment 2:
By described same steps as, repeat embodiment 1, difference is: in step (1), in refining raw material process, the quality ratio of chloroprene and mersolates is 23, in the middle charging technology of step (2), initiator is Potassium Persulphate, conditioning agent is mercaptan, and the amount of Potassium Persulphate is 0.6g, and the amount of mercaptan is 0.6g, regulate 40 ℃ of temperature values, keep 2.5h.
embodiment 3:
By described same steps as, repeat embodiment 1, difference is: in step (1), in refining raw material process, the quality ratio of chloroprene and mersolates is 25, in the middle charging technology of step (2), initiator is Potassium Persulphate, conditioning agent is mercaptan, and the amount of Potassium Persulphate is 1.0g, and the amount of mercaptan is 0.7g, regulate 45 ℃ of temperature values, keep 3h.
After above art breading, take out respectively cloth sample, measuring result is as follows:
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a production technique for chloroprene rubber, is characterized in that, comprises the steps:
(1) preparation: the first step, refining raw material: starting material comprise chloroprene and mersolates, second step, obtain solution.
(2) polymerization: the first step, feeding: the solution that step (1) is prepared is sent into polymeric kettle, second step, reinforced: to add initiator and conditioning agent, the 3rd step, temperature adjustment: regulate 35-45 ℃ of temperature values, keep 2-3h, the 4th step, termination reaction: add terminator;
(3) chain rupture: add alkaline matter and tetramethyl-thiuram disulfide;
(4) cohesion: the first step, transferred material, second step: separate out: add flocculation agent, the 3rd step, particle disposal;
(5) refining glue: the first step, drying glue, second step, plastic cement, the 3rd step, mixed glue.
(6) work in-process cutting: add Zinic stearas;
(7) sulfuration: the first step, mucous membrane, second step, rotten eye.
2. according to the production technique of a kind of chloroprene rubber claimed in claim 1, it is characterized in that: in described step (1), obtain solution processing step is as follows:
(1) dry:
(2) cooling:
(3) metering;
(4) add auxiliary: first add rosin, keep 10-20 minutes, then add softening water, sodium hydroxide and dispersion agent, keep 10-20 minutes.
3. according to the production technique of a kind of chloroprene rubber claimed in claim 1, it is characterized in that: in described step (1), the quality ratio of chloroprene and mersolates is 20-25.
4. according to the production technique of a kind of chloroprene rubber claimed in claim 2, it is characterized in that: in described step (2), initiator is Potassium Persulphate, conditioning agent is mercaptan, and in described step (4), flocculation agent is comprised of sodium-chlor and calcium chloride, and its proportionlity is 5:2.
5. according to the production technique of a kind of chloroprene rubber claimed in claim 4, it is characterized in that: the amount of described Potassium Persulphate is 0.2-1.0g, the amount of mercaptan is 0.5-0.7g.
6. according to the production technique of a kind of chloroprene rubber claimed in claim 1, it is characterized in that: in described step (4), particle disposal technique comprises the steps:
(1) washing;
(2) extrusion dehydration;
(3) dry;
(4) face powder;
(5) cut and cut.
?
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310450709.7A CN103554321A (en) | 2013-09-29 | 2013-09-29 | Production technology for chloroprene rubber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310450709.7A CN103554321A (en) | 2013-09-29 | 2013-09-29 | Production technology for chloroprene rubber |
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| CN201310450709.7A Pending CN103554321A (en) | 2013-09-29 | 2013-09-29 | Production technology for chloroprene rubber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109608568A (en) * | 2018-11-30 | 2019-04-12 | 重庆化医长寿化工集团有限公司 | A kind of Neoprene latex chain rupture technique |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059185A (en) * | 2012-12-30 | 2013-04-24 | 山西合成橡胶集团有限责任公司 | Preparation method of chloroprene rubber |
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2013
- 2013-09-29 CN CN201310450709.7A patent/CN103554321A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059185A (en) * | 2012-12-30 | 2013-04-24 | 山西合成橡胶集团有限责任公司 | Preparation method of chloroprene rubber |
Non-Patent Citations (1)
| Title |
|---|
| 王子生: ""国产氯丁橡胶生产工艺问题探讨"", 《特种橡胶制品》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109608568A (en) * | 2018-11-30 | 2019-04-12 | 重庆化医长寿化工集团有限公司 | A kind of Neoprene latex chain rupture technique |
| CN109608568B (en) * | 2018-11-30 | 2021-04-06 | 重庆化医长寿化工集团有限公司 | Chloroprene rubber latex chain breaking process |
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Application publication date: 20140205 |