CN102775658A - Chloroprene rubber/polyvinyl chloride co-precipitation rubber and preparation method thereof - Google Patents
Chloroprene rubber/polyvinyl chloride co-precipitation rubber and preparation method thereof Download PDFInfo
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- CN102775658A CN102775658A CN2012102727026A CN201210272702A CN102775658A CN 102775658 A CN102775658 A CN 102775658A CN 2012102727026 A CN2012102727026 A CN 2012102727026A CN 201210272702 A CN201210272702 A CN 201210272702A CN 102775658 A CN102775658 A CN 102775658A
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Abstract
The invention relates to a cloroprene rubber/polyvinyl chloride co-precipitation rubber. The cloroprene rubber/polyvinyl chloride co-precipitation rubber comprises the following raw materials in percentage by weight: 99%-60% of chloroprene rubber latex and 1%-40% of polyvinyl chloride latex. Chemical modification of chloroprene rubber provided by the invention is performed at the synthesis stage of chloroprene rubber, thereby changing the chloroprene rubber performance and improving scorching performance, roll-sticking performance, dispersion performance, abrasion-resistant performance and the like. The invention solves processing problems which cannot be solved by the traditional rubber mixing process and expands the scope of application of the product.
Description
Technical field
The invention belongs to the modified rubber field, relate to the in-situ blending coacervation of emulsion, especially a kind of X 050/SE is heavy glue and preparation method thereof altogether.
Background technology
X 050 (CR) is a kind of half universal viton, claims neoprene again, and newly flat rubber is that chloroprene (being chlorbutadiene) carries out the elastomerics that α-polymerization generates for main raw material.It is synthetic that present X 050 is emulsion polymerisation process; X 050 is in the course of processing; Early stage incipient scorch, processing roll banding, bad dispersibility, temperature sensitivity height appear; The goods lower temperature resistance is poor, wear no resistance etc., and its performance often can't satisfy industrial requirement, thus in process of production; The manufacturer often solves this difficult problem through substitute or modified rubber, and the multipolymer that especially obtains excellent property through X 050 and SE (PVC) synthesis modification is praised highly by numerous producer.
But X 050 and SE have the inconsistent characteristics of thermodynamics under solid; Therefore adopt the high-temperature machinery method to be difficult to together with two kinds of material mixing; And disperseing inhomogeneous unstable product quality performance not reach requirement, this also makes the use of existing X 050 and polyvinyl chloride copolymer receive limitation.
Summary of the invention
The objective of the invention is to overcome the weak point of prior art, X 050/SE that a kind of higher industrial performance, production technique be convenient to operate heavy glue and preparation method thereof altogether is provided.
The objective of the invention is to realize like this:
The heavy altogether glue of a kind of X 050/SE, it is characterized in that: its feed composition and part by weight are:
Neoprene latex 99%～60%;
Polyvinyl chloride emulsion 1%～40%.
And said neoprene latex total solid substance matter massfraction is 10%～40%.
And said polyvinyl chloride emulsion total solid substance matter massfraction is 10%～40%.
A kind of X 050/SE is the preparation method of heavy glue altogether, the steps include:
⑴ blending: under the room temperature, neoprene latex and polyvinyl chloride emulsion are dropped into reaction kettle according to the ratio of 60～99:1 ~ 40, mixing and stirring, rotating speed is 20～40 rev/mins, obtains mixed emulsion;
⑵ cohesion: under the room temperature, add flocculation agent continuously to mixed emulsion, after treating to finish according to cohesion, wash, extrude, cut into slices, 60～140 ℃ of oven dry obtain the heavy altogether glue of X 050/SE;
⑶ mixing: place mill mixing in the heavy altogether glue of X 050/SE, 70～140 ℃ of temperature are added the auxiliary agent that contains its corresponding active element according to the performance requriements of the heavy glue altogether of various uses.
And the described flocculation agent of step ⑵ is that massfraction is any one of Pottasium Hydroxide of 1%～10% sodium chloride solution, 1%～10% liquor alumini chloridi, 1%～10% Klorvess Liquid, 1%～10% calcium chloride solution, 5% hydrochloric acid, 5% sulfuric acid, 5% oxalic acid, 5% Glacial acetic acid min. 99.5,1%～20% sodium hydroxide solution and 1%～20%.
And the described coacervation of step ⑵ can also be to 0～15 ℃ of mixed emulsion temperature control, regulates pH 6～8; Mixed emulsion is put in the freeze agglomeration cylinder, and temperature remains between-5～-20 ℃, constantly in mixed emulsion, rotates; Film attached to cylinder surface is agglomerated product; Take out, wash, extrude, cut into slices, 60～140 ℃ of oven dry obtain the heavy altogether glue of X 050/SE.
And the described coacervation of step ⑵ can also be to 20～30 ℃ of mixed emulsion temperature controls, uses whizzer to the capable centrifuge dehydration of mixed emulsion; 800～1500 rev/mins of rotating speeds; Be agglomerated product after the dehydration, treat according to the cohesion finish after, wash, extrude, cut into slices; 60～140 ℃ of oven dry obtain the heavy altogether glue of X 050/SE.
Advantage of the present invention and positively effect are:
1, the present invention is through carrying out chemical modification at the X 050 synthesis phase to X 050; Changed the X 050 performance thus; The coke burning performance, roll banding performance, dispersing property of X 050, performance such as wear-resisting have been improved; Solve the processing problems that traditional rubber mixing-milling technique cann't be solved, expanded the scope of application of product.
2, this patent is X 050 water miscible liquid and the blend of PVC water miscible liquid that utilizes synthesis phase; Utilize special in-situ blending cohesion process to generate the heavy altogether glue of novel X 050/SE; Again through the mixing coagel that obtains excellent performance, make product have the commercial performance that traditional X 050 and/or its multipolymer do not possess thus.
Embodiment
Below in conjunction with embodiment, the present invention is further specified, following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.
Embodiment 1
The heavy altogether glue of a kind of X 050/SE, its feed composition and weight are:
X 050 (CR) emulsion (total solid substance matter massfraction is 30%) 80kg;
SE (PVC) emulsion (total solid substance matter massfraction is 30%) 20kg.
This X 050/SE preparing method's step of heavy glue altogether is:
⑴ blending: under the room temperature, neoprene latex and polyvinyl chloride emulsion are dropped into reaction kettle, mixing and stirring, rotating speed is 20～40 rev/mins, obtains mixed emulsion;
⑵ cohesion: under the room temperature, add 5% sodium chloride solution continuously to mixed emulsion, after treating to finish according to cohesion, wash, extrude, cut into slices, 60～140 ℃ of oven dry obtain the heavy altogether glue of X 050/SE;
⑶ mixing: place mill mixing in the heavy altogether glue of X 050/SE, 70～140 ℃ of temperature are added the auxiliary agent that contains its corresponding active element according to the performance requriements of the heavy glue altogether of various uses.
Embodiment 2
The heavy altogether glue of a kind of X 050/SE, its feed composition and weight are:
Neoprene latex (total solid substance matter massfraction is 30%) 90kg;
Polyvinyl chloride emulsion (total solid substance matter massfraction is 30%) 10kg.
This X 050/SE preparing method's step of heavy glue altogether is:
⑴ blending: under the room temperature, neoprene latex and polyvinyl chloride emulsion are dropped into reaction kettle, mixing and stirring, rotating speed is 20～40 rev/mins, obtains mixed emulsion;
⑵ cohesion: to 0～15 ℃ of mixed emulsion temperature control, regulate pH, mixed emulsion is put in the freeze agglomeration cylinder 6～8; Temperature remains between-5～-20 ℃; Constantly in mixed emulsion, rotate, be agglomerated product, take out, wash, extrude, cut into slices attached to the film of cylinder surface; 60～140 ℃ of oven dry obtain the heavy altogether glue 2 of X 050/SE;
⑶ mixing: place mill mixing in the heavy altogether glue of X 050/SE, 70～140 ℃ of temperature are added the auxiliary agent that contains its corresponding active element according to the performance requriements of the heavy glue altogether of various uses.
Embodiment 3
The heavy altogether glue of a kind of X 050/SE, its feed composition and weight are:
Neoprene latex (total solid substance matter massfraction is 20%) 99kg;
Polyvinyl chloride emulsion (total solid substance matter massfraction is 40%) 1kg.
This X 050/SE preparing method's step of heavy glue altogether is:
⑴ blending: under the room temperature, neoprene latex and polyvinyl chloride emulsion are dropped into reaction kettle, mixing and stirring, rotating speed is 20～40 rev/mins, obtains mixed emulsion;
⑵ cohesion:, use whizzer to the capable centrifuge dehydration of mixed emulsion, 800～1500 rev/mins of rotating speeds to 20～30 ℃ of mixed emulsion temperature controls; Be agglomerated product after the dehydration, treat according to the cohesion finish after, wash, extrude, cut into slices; 60～140 ℃ of oven dry obtain the heavy altogether glue 3 of X 050/SE;
⑶ mixing: place mill mixing in the heavy altogether glue of X 050/SE, 70～140 ℃ of temperature are added the auxiliary agent that contains its corresponding active element according to the performance requriements of the heavy glue altogether of various uses.
Embodiment 1
The heavy altogether glue of a kind of X 050/SE, its feed composition and weight are:
X 050 (CR) emulsion (total solid substance matter massfraction is 20%) 60kg;
SE (PVC) emulsion (total solid substance matter massfraction is 40%) 40kg.
This X 050/SE preparing method's step of heavy glue altogether is:
⑴ blending: under the room temperature, neoprene latex and polyvinyl chloride emulsion are dropped into reaction kettle, mixing and stirring, rotating speed is 20～40 rev/mins, obtains mixed emulsion;
⑵ cohesion: under the room temperature, add 5% sodium chloride solution continuously to mixed emulsion, after treating to finish according to cohesion, wash, extrude, cut into slices, 60～140 ℃ of oven dry obtain the heavy altogether glue 4 of X 050/SE;
⑶ mixing: place mill mixing in the heavy altogether glue of X 050/SE, 70～140 ℃ of temperature are added the auxiliary agent that contains its corresponding active element according to the performance requriements of the heavy glue altogether of various uses.
Simultaneous test:
X 050 and the heavy altogether glue 1 and 2 of SE physical blending thing, pure X 050, embodiment 1 and embodiment 2 resulting X 050/SE are carried out the physicals detection respectively, and its comparing result is following:
The rubber physicals detects contrast table
Through contrast; The heavy altogether glue of X 050/SE through the present invention obtains is compared with pure X 050; Its coke burning performance, roll banding performance, dispersing property, performance such as wear-resisting have all had obvious lifting; And even X 050 mixes with the SE simple physics, its performance also is starkly lower than the heavy altogether glue of X 050/SE.
Claims (7)
1. the heavy altogether glue of an X 050/SE, it is characterized in that: its feed composition and part by weight are:
Neoprene latex 99%～60%;
Polyvinyl chloride emulsion 1%～40%.
2. the heavy altogether glue of X 050/SE according to claim 1, it is characterized in that: said neoprene latex total solid substance matter massfraction is 10%～40%.
3. the heavy altogether glue of X 050/SE according to claim 1, it is characterized in that: said polyvinyl chloride emulsion total solid substance matter massfraction is 10%～40%.
4. one kind prepares X 050/SE as claimed in claim 1 method of heavy glue altogether, it is characterized in that: the steps include:
⑴ blending: under the room temperature, neoprene latex and polyvinyl chloride emulsion are dropped into reaction kettle according to the ratio of 60～99:1 ~ 40, mixing and stirring, rotating speed is 20～40 rev/mins, obtains mixed emulsion;
⑵ cohesion: under the room temperature, add flocculation agent continuously to mixed emulsion, after emulsion to be mixed all becomes floss, wash, extrude, cut into slices, 60～140 ℃ of oven dry obtain the heavy altogether glue of X 050/SE;
⑶ mixing: place mill mixing in the heavy altogether glue of X 050/SE, 70～140 ℃ of temperature are added the auxiliary agent that contains its corresponding active element according to the performance requriements of the heavy glue altogether of various uses.
5. the preparation method of the heavy altogether glue of described X 050/SE according to claim 4 is characterized in that: the described flocculation agent of step ⑵ is that massfraction is any one of Pottasium Hydroxide of 1%～10% sodium chloride solution, 1%～10% liquor alumini chloridi, 1%～10% Klorvess Liquid, 1%～10% calcium chloride solution, 5% hydrochloric acid, 5% sulfuric acid, 5% oxalic acid, 5% Glacial acetic acid min. 99.5,1%～20% sodium hydroxide solution and 1%～20%.
6. described X 050/SE according to claim 4 is the preparation method of heavy glue altogether; It is characterized in that: the described coacervation of step ⑵ can also be to 0～15 ℃ of mixed emulsion temperature control, regulates pH 6～8, and mixed emulsion is put in the freeze agglomeration cylinder; Temperature remains between-5～-20 ℃; Constantly in mixed emulsion, rotate, be agglomerated product, take out, wash, extrude, cut into slices attached to the film of cylinder surface; 60～140 ℃ of oven dry obtain the heavy altogether glue of X 050/SE.
7. described X 050/SE according to claim 4 is the preparation method of heavy glue altogether, and it is characterized in that: the described coacervation of step ⑵ can also be to 20～30 ℃ of mixed emulsion temperature controls, uses whizzer to the capable centrifuge dehydration of mixed emulsion; 800～1500 rev/mins of rotating speeds; Be agglomerated product after the dehydration, treat according to the cohesion finish after, wash, extrude, cut into slices; 60～140 ℃ of oven dry obtain the heavy altogether glue of X 050/SE.
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| CN2012102727026A CN102775658A (en) | 2012-08-01 | 2012-08-01 | Chloroprene rubber/polyvinyl chloride co-precipitation rubber and preparation method thereof |
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| CN2012102727026A CN102775658A (en) | 2012-08-01 | 2012-08-01 | Chloroprene rubber/polyvinyl chloride co-precipitation rubber and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016177327A1 (en) * | 2015-05-04 | 2016-11-10 | 电化株式会社 | Chloroprene rubber composition, vulcanized moulded body and use thereof |
| CN106832625A (en) * | 2017-02-21 | 2017-06-13 | 上海蓝昊电气江苏有限公司 | A kind of high resiliency chlorinated polyethylene sheath material |
-
2012
- 2012-08-01 CN CN2012102727026A patent/CN102775658A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 孟宪德等: "CR/PVC共混物的相容性与形态结构的研究", 《合成橡胶工业》 * |
| 青岛海晶化工集团有限公司等: "聚氯乙烯/氯丁橡胶热塑性弹性体", 《中国科技项目创新成果鉴定意见数据库（知网版）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016177327A1 (en) * | 2015-05-04 | 2016-11-10 | 电化株式会社 | Chloroprene rubber composition, vulcanized moulded body and use thereof |
| CN107531952A (en) * | 2015-05-04 | 2018-01-02 | 电化株式会社 | Chloroprene rubber composition, sulfidization molding body and application thereof |
| CN106832625A (en) * | 2017-02-21 | 2017-06-13 | 上海蓝昊电气江苏有限公司 | A kind of high resiliency chlorinated polyethylene sheath material |
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Application publication date: 20121114 |