CN106810663A - Simple experiment room vacuum system glassware protective case and preparation method thereof - Google Patents
Simple experiment room vacuum system glassware protective case and preparation method thereof Download PDFInfo
- Publication number
- CN106810663A CN106810663A CN201710103762.8A CN201710103762A CN106810663A CN 106810663 A CN106810663 A CN 106810663A CN 201710103762 A CN201710103762 A CN 201710103762A CN 106810663 A CN106810663 A CN 106810663A
- Authority
- CN
- China
- Prior art keywords
- protective case
- vacuum system
- experiment room
- simple experiment
- glassware
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
Abstract
The invention belongs to chemical field, and in particular to a kind of simple experiment room vacuum system glassware protective case and preparation method thereof.Described protective case, is prepared from the following raw materials in parts by weight：100~400 parts of PPG；20 60 parts of isocyanates；Its preparation method is：First, by PPG vacuum dehydration, then, isocyanates reaction is added, obtains performed polymer, blowing of lowering the temperature, sealing preserve is standby；Layer protecting film will be formed around performed polymer uniform application to suction filtration bottle neck, when being smeared again after solidification, smeared repeatedly repeatedly to the diaphragm for forming 3~5mm thickness, as described simple experiment room vacuum system glassware protective case.Simple experiment room vacuum system glassware protective case prepared by the present invention, in bottle,suction using being significantly improved on protective, can effectively prevent damage of the bottle,suction in use caused by misoperation, safety and environmental protection；Preparation method is simple and easy to apply, it is easy to accomplish.
Description
Technical field
The invention belongs to chemical field, and in particular to a kind of simple experiment room vacuum system glassware protective case and its system
Preparation Method.
Background technology
During Laboratory Production PPG, there is a step of step vacuum dehydration and filtering, in vacuum system
Inevitably use glass apparatus.By taking bottle,suction as an example, typically fix suction filtration bottle neck with rubber tube and be connected to vavuum pump
On, for containing the monomer material of material or extraction after filtering.Due to being frequently necessary to plug glass bottle neck, pole in use
Easily bottle neck is caused to damage, once damaging can cause the bottle,suction cannot to be continuing with, experiment progress is influenceed, while cannot keep true
Empty bad border.
The content of the invention
In view of the shortcomings of the prior art, protected it is an object of the invention to provide a kind of simple experiment room vacuum system glassware
Sheath, in bottle,suction using being significantly improved on protective, can effectively prevent bottle,suction in use because operating not
When the damage for causing, safety and environmental protection；Present invention simultaneously provides its preparation method simple and easy to apply.
Vacuum system glassware protective case in simple experiment room of the present invention, by the raw material system of following parts by weight
Into：
100~400 parts of PPG；
20~60 parts of isocyanates.
Wherein：
The number-average molecular weight of described PPG is 1000~3500, and hydroxyl value is 30~120.
Described isocyanates is TDI.
The preparation method of described simple experiment room vacuum system glassware protective case, step is as follows：
First, by PPG vacuum dehydration, then, isocyanates reaction is added, obtains performed polymer, blowing of lowering the temperature is close
Envelope is saved backup；Layer protecting film will be formed around performed polymer uniform application to suction filtration bottle neck, when being smeared again after solidification, instead
Overcoating is smeared repeatedly to the diaphragm for forming 3~5mm thickness, as described simple experiment room vacuum system glassware protective case.
Described dehydration is less than 0.03% for dehydration to moisture.
Compared with prior art, beneficial effects of the present invention are as follows：
(1) simple experiment room vacuum system glassware protective case prepared by the present invention, uses on protective in bottle,suction
It is significantly improved, can effectively prevents damage of the bottle,suction in use caused by misoperation, safety and environmental protection.
(2) preparation method of invention is simple and easy to apply, it is easy to accomplish, can self manufacture in laboratory.
Specific embodiment
With reference to embodiment, the present invention will be further described.
The raw material that embodiment is used unless otherwise specified, is purchased in market.
Embodiment 1
Described simple experiment room vacuum system glassware protective case, is prepared from the following raw materials in parts by weight：
200 parts of PPG；
50 parts of TDI；
Wherein, the molecular weight of PPG is 1000, and hydroxyl value is 30.
Its preparation method is as follows：
(1) PPG is fed intake and nitrogen displacement at 40 DEG C, is warming up to 120 DEG C of vacuum dehydrations；
(2) 85 DEG C are cooled to after dehydration is qualified, add TDI reactions 2h to obtain performed polymer；
(3) cooling blowing, sealing preserve；
(4) layer protecting film will be formed around performed polymer uniform application to suction filtration bottle neck, when being smeared again after solidification, instead
Overcoating is smeared repeatedly to the diaphragm that 3mm is thick, as described simple experiment room vacuum system glassware protective case product.
Embodiment 2
Described simple experiment room vacuum system glassware protective case, is prepared from the following raw materials in parts by weight：
300 parts of PPG；
37.5 parts of TDI；
Wherein, the molecular weight of PPG is 3500, and hydroxyl value is 120.
Its preparation method is as follows：
(1) PPG is fed intake and nitrogen displacement at 35 DEG C, is warming up to 120 DEG C of vacuum dehydrations；
(2) 85 DEG C are cooled to after dehydration is qualified, add TDI reactions 2h to obtain performed polymer；
(3) cooling blowing, sealing preserve；
(4) layer protecting film will be formed around performed polymer uniform application to suction filtration bottle neck, when being smeared again after solidification, instead
Overcoating is smeared repeatedly to the diaphragm that 4mm is thick, as described simple experiment room vacuum system glassware protective case product.
Embodiment 3
Described simple experiment room vacuum system glassware protective case, is prepared from the following raw materials in parts by weight：
350 parts of PPG；
56 parts of TDI；
Wherein, the molecular weight of PPG is 2000, and hydroxyl value is 75.
Its preparation method is as follows：
(1) PPG is fed intake and nitrogen displacement at 30 DEG C, is warming up to 120 DEG C of vacuum dehydrations；
(2) 85 DEG C are cooled to after dehydration is qualified, add TDI reactions 2h to obtain performed polymer；
(3) cooling blowing, sealing preserve；
(4) layer protecting film will be formed around performed polymer uniform application to suction filtration bottle neck, when being smeared again after solidification, instead
Overcoating is smeared repeatedly to the diaphragm that 5mm is thick, as described simple experiment room vacuum system glassware protective case product.
The present invention has excellent protective for the glass bottle neck of vacuum filtration bottle, is tested by multiple impacts and drawn, not
The bottle neck of smearing protective case is easily crushed drop under external force, and its resistance to impact strength is greatly improved after installing protective case additional,
Due to certain elasticity and intensity, having preferable protective for the collision of general dynamics, obvious damage is not resulted in,
The crackle between bottle neck and body occurs after going into overdrive, it is not in come off now to wrap up one layer of protective case due to outside
As that can continue to keep the vacuum in bottle.Can significantly increase the service life.
And this experiment can be smeared around body at bottle neck place parallel with body using ring-type, it can also be used to ceramic suction filtration leakage
Struggle against the protection of body and the protection at the fragile position of other glass apparatus.
Claims (5)
1. a kind of simple experiment room vacuum system glassware protective case, it is characterised in that：By the raw material system of following parts by weight
Into：
100~400 parts of PPG；
20~60 parts of isocyanates.
2. vacuum system glassware protective case in simple experiment room according to claim 1, it is characterised in that：Described is poly-
The number-average molecular weight of ethoxylated polyhydric alcohol is 1000~3500, and hydroxyl value is 30~120.
3. vacuum system glassware protective case in simple experiment room according to claim 1, it is characterised in that：Described is different
Cyanate is TDI.
4. the preparation method of any described simple experiment room vacuum system glassware protective cases of a kind of claim 1-3, its
It is characterised by：Step is as follows：
First, by PPG vacuum dehydration, then, isocyanates reaction is added, obtains performed polymer, blowing of lowering the temperature, sealing is protected
Deposit standby；Layer protecting film will be formed around performed polymer uniform application to suction filtration bottle neck, when being smeared again after solidification, applied repeatedly
Smear repeatedly to the diaphragm for forming 3~5mm thickness, as described simple experiment room vacuum system glassware protective case.
5. the preparation method of vacuum system glassware protective case in simple experiment room according to claim 4, its feature exists
In：Described dehydration is less than 0.03% for dehydration to moisture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710103762.8A CN106810663A (en) | 2017-02-24 | 2017-02-24 | Simple experiment room vacuum system glassware protective case and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710103762.8A CN106810663A (en) | 2017-02-24 | 2017-02-24 | Simple experiment room vacuum system glassware protective case and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106810663A true CN106810663A (en) | 2017-06-09 |
Family
ID=59112110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710103762.8A Pending CN106810663A (en) | 2017-02-24 | 2017-02-24 | Simple experiment room vacuum system glassware protective case and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106810663A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3178049A (en) * | 1963-01-25 | 1965-04-13 | Rhone Poulenc Sa | Composite receptacles |
| US4093759A (en) * | 1972-12-23 | 1978-06-06 | Toyo Ink Manufacturing Co., Ltd. | Glass container coated with polyurethane |
| GB1518580A (en) * | 1975-12-05 | 1978-07-19 | Saint Gobain | Coated transparent sheets |
| JPS59135216A (en) * | 1983-01-25 | 1984-08-03 | Asahi Glass Co Ltd | Thermoplastic polyurethane polymer sheet or film and laminated safety glass |
-
2017
- 2017-02-24 CN CN201710103762.8A patent/CN106810663A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3178049A (en) * | 1963-01-25 | 1965-04-13 | Rhone Poulenc Sa | Composite receptacles |
| US4093759A (en) * | 1972-12-23 | 1978-06-06 | Toyo Ink Manufacturing Co., Ltd. | Glass container coated with polyurethane |
| GB1518580A (en) * | 1975-12-05 | 1978-07-19 | Saint Gobain | Coated transparent sheets |
| JPS59135216A (en) * | 1983-01-25 | 1984-08-03 | Asahi Glass Co Ltd | Thermoplastic polyurethane polymer sheet or film and laminated safety glass |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170609 |
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| RJ01 | Rejection of invention patent application after publication |