CN108219100A - A kind of sealing material based on polyurethane foam - Google Patents
A kind of sealing material based on polyurethane foam Download PDFInfo
- Publication number
- CN108219100A CN108219100A CN201711391669.8A CN201711391669A CN108219100A CN 108219100 A CN108219100 A CN 108219100A CN 201711391669 A CN201711391669 A CN 201711391669A CN 108219100 A CN108219100 A CN 108219100A
- Authority
- CN
- China
- Prior art keywords
- polyurethane foam
- sealing material
- material based
- polyether polyol
- chain
- 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.)
- Withdrawn
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Classifications
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- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- 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
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- 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
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
-
- 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
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of sealing materials based on polyurethane foam, by polyisocyanates, polyether polyol, foaming agent, chain extender, catalyst and auxiliary agent, the polyether polyol in the presence of dmc catalyst by least one polyester polyol and at least one oxyalkylated reagent by being obtained by the reaction, the number-average molecular weight of the polyether polyol is 3,000 8000, the chain extender is the glycol with aliphatic linear carbon chain, the aliphatic linear carbon chain contains 1 10 carbon atoms, and the auxiliary agent is aerosil.
Description
Technical field
The present invention relates to a kind of sealing materials based on polyurethane foam, belong to field of material technology.
Background technology
For hard polyurethane foam due to its good heat-insulating property, application range is more and more wider, be gradually applied to every
The field of hot utilidor, these heat-insulation and heat-preservation pipelines are to be produced under the controlled condition of setting in factory, and are managed
It is carried out under the weather condition that road connection can only be at the construction field (site), and is still required for carrying out additionally after the completion of the welding of junction
Heat insulation work.
Therefore need a kind of synthesis at low cost, the good polyurethane foam of environment-adapting ability.
Invention content
The present invention proposes a kind of sealing material based on polyurethane foam to solve the deficiencies in the prior art.
In order to solve the above technical problem, the present invention provides a kind of sealing material based on polyurethane foam, by polyisocyanate
Cyanate, polyether polyol, foaming agent, chain extender, catalyst and auxiliary agent, the polyether polyol in dmc catalyst by existing
In the case of be obtained by the reaction by least one polyester polyol and at least one oxyalkylated reagent, the number of the polyether polyol is equal
Molecular weight is 3000-8000, and the chain extender is the glycol with aliphatic linear carbon chain, which contains 1-
10 carbon atoms, the auxiliary agent are aerosil.
As advanced optimizing for the present invention, chain extender of the present invention is the glycol with aliphatic linear carbon chain,
The aliphatic linear carbon chain contains 3-5 carbon atom.
As advanced optimizing for the present invention, oxyalkylated reagent of the present invention is 1,2- propylene oxide.
As advanced optimizing for the present invention, foaming agent of the present invention includes deionized water.
As advanced optimizing for the present invention, polyisocyanates of the present invention is included by aromatic isocyanate and polyethers
The prepolymer that polyol reaction obtains.
Advantageous effect：Compared with prior art, the present invention it has the following advantages：The polyurethane foam sealing material of the present invention
Compressed residual should become smaller at high temperature, have good leakproofness, while the sealing material synthesis of the present invention is at low cost, environment is fitted
Stress is good, with good economic efficiency.
Specific embodiment
With reference to specific embodiment, the present invention is furture elucidated, it should be understood that these examples be merely to illustrate the present invention and
It is not used in and limits the scope of the invention, after the present invention has been read, those skilled in the art are to the various shapes of equal value of the present invention
The modification of formula falls within the application range as defined in the appended claims.
A kind of sealing material based on polyurethane foam of the present embodiment, by polyisocyanates, polyether polyol, foaming
Agent, chain extender, catalyst and auxiliary agent, the polyether polyol by the presence of dmc catalyst by least one polyester
Polyalcohol and at least one oxyalkylated reagent are obtained by the reaction, and the number-average molecular weight of the polyether polyol is 3000-8000, described
Chain extender is the glycol with aliphatic linear carbon chain, which contains 1-10 carbon atom, and the auxiliary agent is
Aerosil.
Specifically, the chain extender of the present embodiment is the glycol with aliphatic linear carbon chain, which contains
There is a 3-5 carbon atom, oxyalkylated reagent 1,2- propylene oxide, which includes deionized water, the polyisocyanate cyanogen of the present embodiment
Acid esters is included by aromatic isocyanate and polyether polyol prepolymer obtained by the reaction.
Claims (5)
1. a kind of sealing material based on polyurethane foam, it is characterised in that：By polyisocyanates, polyether polyol, foaming agent,
Chain extender, catalyst and auxiliary agent, the polyether polyol by the presence of dmc catalyst by least one polyester polyols
Alcohol and at least one oxyalkylated reagent are obtained by the reaction, and the number-average molecular weight of the polyether polyol is 3000-8000, the chain extension
Agent is the glycol with aliphatic linear carbon chain, which contains 1-10 carbon atom, and the auxiliary agent is gas phase
Silica.
2. a kind of sealing material based on polyurethane foam according to claim 1, it is characterised in that：The chain extender is
Glycol with aliphatic linear carbon chain, the aliphatic linear carbon chain contain 3-5 carbon atom.
3. a kind of sealing material based on polyurethane foam according to claim 1, it is characterised in that：The alkoxylate
Agent is 1,2 epoxy prapane.
4. a kind of sealing material based on polyurethane foam according to claim 1, it is characterised in that：The foaming agent packet
Include deionized water.
5. a kind of sealing material based on polyurethane foam according to claim 1, it is characterised in that：The polyisocyanic acid
Ester is included by aromatic isocyanate and polyether polyol prepolymer obtained by the reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391669.8A CN108219100A (en) | 2017-12-21 | 2017-12-21 | A kind of sealing material based on polyurethane foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391669.8A CN108219100A (en) | 2017-12-21 | 2017-12-21 | A kind of sealing material based on polyurethane foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108219100A true CN108219100A (en) | 2018-06-29 |
Family
ID=62647624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711391669.8A Withdrawn CN108219100A (en) | 2017-12-21 | 2017-12-21 | A kind of sealing material based on polyurethane foam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108219100A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564800A (en) * | 2020-05-26 | 2020-08-21 | 中电保力（北京）科技有限公司 | Waterproof method for cable pipeline to pass through wall |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648146A (en) * | 2004-01-13 | 2005-08-03 | 拜尔材料科学股份公司 | Polyether ester used as flame retardant of polyurethane flexible foam plastic |
| CN103314031A (en) * | 2010-11-09 | 2013-09-18 | 巴斯夫欧洲公司 | Polyetherester polyols |
| CN104144961A (en) * | 2012-03-01 | 2014-11-12 | 巴斯夫欧洲公司 | Rigid polyurethane foams |
-
2017
- 2017-12-21 CN CN201711391669.8A patent/CN108219100A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648146A (en) * | 2004-01-13 | 2005-08-03 | 拜尔材料科学股份公司 | Polyether ester used as flame retardant of polyurethane flexible foam plastic |
| CN103314031A (en) * | 2010-11-09 | 2013-09-18 | 巴斯夫欧洲公司 | Polyetherester polyols |
| CN104144961A (en) * | 2012-03-01 | 2014-11-12 | 巴斯夫欧洲公司 | Rigid polyurethane foams |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564800A (en) * | 2020-05-26 | 2020-08-21 | 中电保力（北京）科技有限公司 | Waterproof method for cable pipeline to pass through wall |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180629 |
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| WW01 | Invention patent application withdrawn after publication |