CN106750311A - Waste silicone rubber produces the synthetic method of hydroxy silicon oil - Google Patents
Waste silicone rubber produces the synthetic method of hydroxy silicon oil Download PDFInfo
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- CN106750311A CN106750311A CN201510805875.3A CN201510805875A CN106750311A CN 106750311 A CN106750311 A CN 106750311A CN 201510805875 A CN201510805875 A CN 201510805875A CN 106750311 A CN106750311 A CN 106750311A
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- China
- Prior art keywords
- silicone rubber
- silicon oil
- hydroxy silicon
- waste
- synthetic method
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The present invention relates to the synthetic method that a kind of waste silicone rubber produces hydroxy silicon oil.Carry out in following processing steps：Dimethyl siloxane mixed methylcyclosiloxane in waste silicone rubber is evacuated in reactor, crude oil is warming up to 90-100 DEG C, acetic anhydride is added, using sulfuric acid as catalyst, polymerisation 3.5-5 hours under condition of negative pressure；150~160 DEG C are then heated to, low molecule is sloughed, 60-80 DEG C is cooled to, adding water and sodium carbonate carries out neutralization reaction to neutrality, hydroxy silicon oil is obtained after cooling.The present invention carries out Pintsch process using advanced technologies such as Pintsch process to the waste silicone rubber such as waste computer, mobile phone key, discarded glass glue of generation in production and life, produces hydroxy silicon oil；The present invention is recycled waste, has obtained economic worth silicone oil higher, good economic benefit is not only achieved, while it also avoid the pollution to environment.
Description
Technical field
The present invention relates to the method that the dimethyl siloxane mixed methylcyclosiloxane of a kind of synthetic method of hydroxy silicon oil, more particularly to a kind of production of utilization waste silicone rubber produces hydroxy silicon oil.
Background technology
The production technology of preceding China's production amido silicon oil is typically all that organic silicon monomer production hydroxy silicon oil is extracted from crustal rock, and this technics comparing is complicated, and energy consumption is huge.
Nowadays the economy of China is developed rapidly, and the industry such as electronics, communication, IT is even more advances by leaps and bounds, and the waste silicone rubber of generation is just more and more, and these useless silica gel cannot degrade under natural environment, and being formerly only available carries out landfill disposal.The waste for causing resource and the burden for aggravating environment.
The content of the invention
The present invention is directed to drawbacks described above, it is therefore intended that provide a kind of by rational technological design, the method for obtaining that waste silicone rubber is produced hydroxy silicon oil.
For this technical solution adopted by the present invention is：The present invention is carried out in following processing steps：Dimethyl siloxane mixed methylcyclosiloxane in waste silicone rubber is evacuated in reactor, crude oil is warming up to 90-100 DEG C, acetic anhydride is added, using sulfuric acid as catalyst, polymerisation 3.5-5 hours under condition of negative pressure；150~160 DEG C are then heated to, low molecule is sloughed, 60-80 DEG C is cooled to, adding water and sodium carbonate carries out neutralization reaction to neutrality, hydroxy silicon oil is obtained after cooling.
The polymeric reaction temperature is 93 DEG C.
Polymerization reaction time is 4 hours.
It is an advantage of the invention that：The present invention carries out Pintsch process using advanced technologies such as Pintsch process to the waste silicone rubber such as waste computer, mobile phone key, discarded glass glue of generation in production and life, produces hydroxy silicon oil；The present invention is recycled waste, has obtained economic worth silicone oil higher, good economic benefit is not only achieved, while it also avoid the pollution to environment.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Specific embodiment
Embodiment one：
The present invention is carried out in following processing steps：Dimethyl siloxane mixed methylcyclosiloxane in waste silicone rubber is evacuated in reactor, crude oil is warming up to 93 DEG C, add acetic anhydride, using sulfuric acid as catalyst, polymerisation 4 hours under condition of negative pressure；155 DEG C are then heated to, low molecule is sloughed, 70 DEG C are cooled to, adding water and sodium carbonate carries out neutralization reaction to neutrality, hydroxy silicon oil is obtained after cooling.
Embodiment two：
The present invention is carried out in following processing steps：Dimethyl siloxane mixed methylcyclosiloxane in waste silicone rubber is evacuated in reactor, crude oil is warming up to 90 DEG C, add acetic anhydride, using sulfuric acid as catalyst, polymerisation 3.5 hours under condition of negative pressure；160 DEG C are then heated to, low molecule is sloughed, 60 DEG C are cooled to, adding water and sodium carbonate carries out neutralization reaction to neutrality, hydroxy silicon oil is obtained after cooling.
Embodiment three:
The present invention is carried out in following processing steps：Dimethyl siloxane mixed methylcyclosiloxane in waste silicone rubber is evacuated in reactor, crude oil is warming up to 100 DEG C, acetic anhydride is added, using sulfuric acid as catalyst, polymerisation 3.5-5 hours under condition of negative pressure；150 DEG C are then heated to, low molecule is sloughed, 70 DEG C are cooled to, adding water and sodium carbonate carries out neutralization reaction to neutrality, hydroxy silicon oil is obtained after cooling.
Reaction equation of the invention is：
Claims (3)
1. waste silicone rubber produces the synthetic method of hydroxy silicon oil, it is characterised in that carry out in following processing steps：Dimethyl siloxane mixed methylcyclosiloxane in waste silicone rubber is evacuated in reactor, crude oil is warming up to 90-100 DEG C, acetic anhydride is added, using sulfuric acid as catalyst, polymerisation 3.5-5 hours under condition of negative pressure；150~160 DEG C are then heated to, low molecule is sloughed, 60-80 DEG C is cooled to, adding water and sodium carbonate carries out neutralization reaction to neutrality, hydroxy silicon oil is obtained after cooling.
2. waste silicone rubber according to claim 1 produces the synthetic method of hydroxy silicon oil, it is characterised in that the polymeric reaction temperature is 93 DEG C.
3. waste silicone rubber according to claim 1 produces the synthetic method of hydroxy silicon oil, it is characterised in that polymerization reaction time is 4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510805875.3A CN106750311A (en) | 2015-11-20 | 2015-11-20 | Waste silicone rubber produces the synthetic method of hydroxy silicon oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510805875.3A CN106750311A (en) | 2015-11-20 | 2015-11-20 | Waste silicone rubber produces the synthetic method of hydroxy silicon oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106750311A true CN106750311A (en) | 2017-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510805875.3A Pending CN106750311A (en) | 2015-11-20 | 2015-11-20 | Waste silicone rubber produces the synthetic method of hydroxy silicon oil |
Country Status (1)
| Country | Link |
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| CN (1) | CN106750311A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112011085A (en) * | 2019-05-28 | 2020-12-01 | 赢创运营有限公司 | Method for recycling silicone |
| CN112119111A (en) * | 2018-05-17 | 2020-12-22 | 赢创运营有限公司 | Linear polydimethylsiloxane-polyoxyalkylene block copolymers of the ABA structure type |
| CN114907568A (en) * | 2022-03-29 | 2022-08-16 | 江门市胜鹏化工实业有限公司 | Preparation method of piperazine silicone oil |
-
2015
- 2015-11-20 CN CN201510805875.3A patent/CN106750311A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112119111A (en) * | 2018-05-17 | 2020-12-22 | 赢创运营有限公司 | Linear polydimethylsiloxane-polyoxyalkylene block copolymers of the ABA structure type |
| CN112011085A (en) * | 2019-05-28 | 2020-12-01 | 赢创运营有限公司 | Method for recycling silicone |
| CN114907568A (en) * | 2022-03-29 | 2022-08-16 | 江门市胜鹏化工实业有限公司 | Preparation method of piperazine silicone oil |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |