CN110564131A - improved polyurethane foam and preparation method thereof - Google Patents
improved polyurethane foam and preparation method thereof Download PDFInfo
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- CN110564131A CN110564131A CN201810574826.7A CN201810574826A CN110564131A CN 110564131 A CN110564131 A CN 110564131A CN 201810574826 A CN201810574826 A CN 201810574826A CN 110564131 A CN110564131 A CN 110564131A
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- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
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- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- 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
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- 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
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
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- 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
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Inorganic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses an improved polyurethane foam, which comprises the following components in percentage by mass: 20-30% of first polyurethane, 20-30% of second polyurethane, 20-30% of third polyurethane, 4-10% of aqueous thickening agent, 1-6% of compatilizer, 1-5% of adhesive, 2-7% of hot melt adhesive, 2-8% of aqueous release agent, 1-7% of potato starch and 0.5-3% of silicon dioxide. The invention also discloses an improved polyurethane foam and a preparation method thereof, wherein the preparation method comprises the following steps: weighing raw materials, preparing a polyurethane foaming raw material, reacting and stirring, adding an auxiliary agent, forming a die and cooling. According to the invention, the polyurethane foam is prepared by mutually mixing the first polyurethane, the second polyurethane and the third polyurethane, so that the comprehensive performance of the polyurethane foam is improved, the adhesive, the hot melt adhesive and the potato starch ensure the bonding strength of the polyurethane foam, the polyurethane foam is not easy to tear, the silicon dioxide enables the polyurethane foam to have higher acid and alkali resistance, the service life of the foam is prolonged, and the polyurethane foam is suitable for popularization.
Description
Technical Field
the invention relates to the field of polyurethane foam, in particular to improved polyurethane foam and a preparation method thereof.
Background
the polyurethane foam is a high molecular polymer which is formed by mixing through special equipment and performing on-site foaming through high-pressure spraying under the action of various auxiliary agents such as a foaming agent, a catalyst, a flame retardant and the like, and the polyurethane rigid foam has two types of soft foam and hard foam. The soft bubbles are in an open pore structure, and the hard bubbles are in a closed pore structure; the soft foam is divided into skinning and non-skinning, and the existing polyurethane foam has short service life, poor acid and alkali resistance, low bonding strength and easy tearing in the actual use process, so that the improved polyurethane foam is designed to solve the defects.
Disclosure of Invention
The present invention is directed to an improved polyurethane foam and a method for preparing the same, which solves the problems set forth above in the background art.
in order to achieve the purpose, the invention provides the following technical scheme: an improved polyurethane foam comprising (in mass percent): 20-30% of first polyurethane, 20-30% of second polyurethane, 20-30% of third polyurethane, 4-10% of aqueous thickening agent, 1-6% of compatilizer, 1-5% of adhesive, 2-7% of hot melt adhesive, 2-8% of aqueous release agent, 1-7% of potato starch and 0.5-3% of silicon dioxide.
Preferably, the polyurethane I, the polyurethane II and the polyurethane III are respectively aqueous polyurethane, thermoplastic polyurethane and wet foaming polyurethane resin.
Preferably, the aqueous thickener is one or more of water-soluble associated polyurethane thickener and water-soluble cellulose thickener in equal mass percentage.
Preferably, the compatilizer is composed of one or more of EAA, EVA, CPE and SEBS according to equal mass percentage.
Preferably, the adhesive is composed of one or more of epoxy resin, phenolic resin, melamine-formaldehyde resin, organic silicon resin and furan resin in equal mass percentage, and the hot melt adhesive is an EVA hot melt adhesive.
Preferably, the improved polyurethane foam comprises (by mass percent): 20% of polyurethane I, 20% of polyurethane II, 20% of polyurethane III, 10% of water-based thickening agent, 5% of compatilizer, 5% of adhesive, 5% of hot melt adhesive, 5% of water-based release agent, 7% of potato starch and 3% of silicon dioxide.
Preferably, the improved polyurethane foam comprises (by mass percent): 24% of first polyurethane, 24% of second polyurethane, 24% of third polyurethane, 8% of aqueous thickening agent, 3% of compatilizer, 3% of adhesive, 4% of hot melt adhesive, 3% of aqueous release agent, 4% of potato starch and 3% of silicon dioxide.
Preferably, the improved polyurethane foam comprises (by mass percent): 25% of first polyurethane, 25% of second polyurethane, 25% of third polyurethane, 6% of water-based thickener, 2% of compatilizer, 2% of adhesive, 3% of hot melt adhesive, 2% of water-based release agent, 7% of potato starch and 3% of silicon dioxide.
preferably, the improved polyurethane foam comprises (by mass percent): 30% of polyurethane I, 25% of polyurethane II, 25% of polyurethane III, 4% of water-based thickening agent, 1% of compatilizer, 1% of adhesive, 7% of hot melt adhesive, 2% of water-based release agent, 2.5% of potato starch and 2.5% of silicon dioxide.
An improved polyurethane foam and process for its preparation as described above, the process comprising the steps of:
The method comprises the following steps: weighing raw materials, weighing the raw materials according to the mass percentage, and respectively storing for later use;
step two: preparing polyurethane foaming raw materials, mixing and stirring first polyurethane, second polyurethane, third polyurethane, hot melt adhesive, silicon dioxide and potato starch according to the mass ratio, and stirring for 20-60 minutes;
step three: reaction stirring, namely putting the mixed raw materials in the step two into a reaction kettle for reaction for 30-100 minutes, stirring for 20-50 minutes, and then storing for later use;
step four: adding an auxiliary agent, sequentially adding the aqueous thickening agent, the compatilizer, the adhesive and the aqueous release agent into the polyurethane foaming raw material prepared in the third step according to the mass ratio, and stirring for 10-40 minutes;
Step five: a mould, pouring the raw materials obtained in the fourth step into a mould, and heating for 20-60 minutes under the conditions of 10-50MPa and 100-200 ℃;
Step six: and (3) cooling, namely cooling the raw materials processed in the mold for 30-60 minutes at normal temperature to obtain the polyurethane foam.
compared with the prior art, the invention has the beneficial effects that: according to the invention, the polyurethane foam is prepared by mutually mixing the first polyurethane, the second polyurethane and the third polyurethane, so that the comprehensive performance of the polyurethane foam is improved, the adhesive, the hot melt adhesive and the potato starch ensure the bonding strength of the polyurethane foam, the polyurethane foam is not easy to tear, the silicon dioxide enables the polyurethane foam to have higher acid and alkali resistance, the service life of the foam is prolonged, and the polyurethane foam is suitable for popularization.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The invention provides a technical scheme that: an improved polyurethane foam comprising (in mass percent): 20% of polyurethane I, 20% of polyurethane II, 20% of polyurethane III, 10% of water-based thickening agent, 5% of compatilizer, 5% of adhesive, 5% of hot melt adhesive, 5% of water-based release agent, 7% of potato starch and 3% of silicon dioxide.
Further, the first polyurethane, the second polyurethane and the third polyurethane are respectively aqueous polyurethane, thermoplastic polyurethane and wet foaming polyurethane resin.
Furthermore, the water-based thickener is composed of two water-soluble associative polyurethane thickeners and water-soluble cellulose thickeners according to equal mass percentage.
Further, the compatilizer consists of four components of EAA, EVA, CPE and SEBS according to equal mass percentage.
Further, the adhesive is composed of five types of epoxy resin, phenolic resin, melamine-formaldehyde resin, organic silicon resin and furan resin according to equal mass percentage, and the hot melt adhesive is EVA hot melt adhesive.
An improved polyurethane foam and process for its preparation as described above, the process comprising the steps of:
The method comprises the following steps: weighing raw materials, weighing the raw materials according to the mass percentage, and respectively storing for later use;
Step two: preparing polyurethane foaming raw materials, mixing polyurethane I, polyurethane II and polyurethane III, hot melt adhesive, silicon dioxide and potato starch according to the mass ratio, stirring, and stirring for 20 minutes;
step three: reaction stirring, namely putting the mixed raw materials in the step two into a reaction kettle for reaction for 30 minutes, stirring for 20 minutes, and then storing for later use;
Step four: adding an auxiliary agent, sequentially adding the aqueous thickening agent, the compatilizer, the adhesive and the aqueous release agent into the polyurethane foaming raw material prepared in the third step according to the mass ratio, and stirring for 10 minutes;
step five: a mould, pouring the raw materials obtained in the fourth step into a mould, and heating for 20 minutes under the conditions of 10MPa and 100 ℃;
step six: and (3) cooling, namely cooling the raw materials processed in the mold for 30 minutes at normal temperature to obtain the polyurethane foam.
example two
The invention provides a technical scheme that: an improved polyurethane foam comprising (in mass percent): 24% of first polyurethane, 24% of second polyurethane, 24% of third polyurethane, 8% of aqueous thickening agent, 3% of compatilizer, 3% of adhesive, 4% of hot melt adhesive, 3% of aqueous release agent, 4% of potato starch and 3% of silicon dioxide.
further, the first polyurethane, the second polyurethane and the third polyurethane are respectively aqueous polyurethane, thermoplastic polyurethane and wet foaming polyurethane resin.
furthermore, the water-based thickener is composed of water-soluble associative polyurethane thickener.
Further, the compatilizer consists of three components of EAA, CPE and SEBS according to equal mass percentage.
furthermore, the adhesive is composed of four phases of epoxy resin, melamine-formaldehyde resin, organic silicon resin and furan resin according to equal mass percentage, and the hot melt adhesive is EVA hot melt adhesive.
An improved polyurethane foam and process for its preparation as described above, the process comprising the steps of:
The method comprises the following steps: weighing raw materials, weighing the raw materials according to the mass percentage, and respectively storing for later use;
Step two: preparing polyurethane foaming raw materials, mixing polyurethane I, polyurethane II and polyurethane III, hot melt adhesive, silicon dioxide and potato starch according to the mass ratio, stirring, and stirring for 30 minutes;
step three: reaction stirring, namely putting the mixed raw materials in the step two into a reaction kettle for reaction for 40 minutes, stirring for 30 minutes, and then storing for later use;
Step four: adding an auxiliary agent, sequentially adding the aqueous thickening agent, the compatilizer, the adhesive and the aqueous release agent into the polyurethane foaming raw material prepared in the third step according to the mass ratio, and stirring for 20 minutes;
Step five: a forming die, pouring the raw materials obtained in the fourth step into a die, and heating for 30 minutes under the conditions of 20MPa and 120 ℃;
step six: and (3) cooling, namely cooling the raw materials processed in the mold for 40 minutes at normal temperature to obtain the polyurethane foam.
EXAMPLE III
The invention provides a technical scheme that: an improved polyurethane foam comprising (in mass percent): 25% of first polyurethane, 25% of second polyurethane, 25% of third polyurethane, 6% of water-based thickener, 2% of compatilizer, 2% of adhesive, 3% of hot melt adhesive, 2% of water-based release agent, 7% of potato starch and 3% of silicon dioxide.
Further, the first polyurethane, the second polyurethane and the third polyurethane are respectively aqueous polyurethane, thermoplastic polyurethane and wet foaming polyurethane resin.
Furthermore, the water-based thickener is composed of two water-soluble associative polyurethane thickeners and water-soluble cellulose thickeners according to equal mass percentage.
further, the compatilizer consists of three components of EAA, EVA and SEBS according to equal mass percentage.
Furthermore, the adhesive is composed of three types of epoxy resin, organic silicon resin and furan resin according to equal mass percentage, and the hot melt adhesive is EVA hot melt adhesive.
An improved polyurethane foam and process for its preparation as described above, the process comprising the steps of:
the method comprises the following steps: weighing raw materials, weighing the raw materials according to the mass percentage, and respectively storing for later use;
Step two: preparing polyurethane foaming raw materials, mixing polyurethane I, polyurethane II and polyurethane III, hot melt adhesive, silicon dioxide and potato starch according to the mass ratio, stirring, and stirring for 50 minutes;
step three: reaction stirring, namely putting the mixed raw materials in the step two into a reaction kettle for reacting for 90 minutes, stirring for 40 minutes, and then storing for later use;
Step four: adding an auxiliary agent, sequentially adding the aqueous thickening agent, the compatilizer, the adhesive and the aqueous release agent into the polyurethane foaming raw material prepared in the third step according to the mass ratio, and stirring for 30 minutes;
Step five: a forming die, pouring the raw materials obtained in the fourth step into a die, and heating for 50 minutes under the conditions of 30MPa and 150 ℃;
step six: and (3) cooling, namely cooling the raw materials processed in the mold for 50 minutes at normal temperature to obtain the polyurethane foam.
example four
the invention provides a technical scheme that: an improved polyurethane foam comprising (in mass percent): 30% of polyurethane I, 25% of polyurethane II, 25% of polyurethane III, 4% of water-based thickening agent, 1% of compatilizer, 1% of adhesive, 7% of hot melt adhesive, 2% of water-based release agent, 2.5% of potato starch and 2.5% of silicon dioxide.
further, the first polyurethane, the second polyurethane and the third polyurethane are respectively aqueous polyurethane, thermoplastic polyurethane and wet foaming polyurethane resin.
Further, the aqueous thickener is composed of a water-soluble cellulose thickener.
Further, the compatilizer consists of three components of EAA, EVA and CPE according to equal mass percentage.
Furthermore, the adhesive is composed of two types of organic silicon resin and furan resin according to equal mass percent, and the hot melt adhesive is EVA hot melt adhesive.
An improved polyurethane foam and process for its preparation as described above, the process comprising the steps of:
the method comprises the following steps: weighing raw materials, weighing the raw materials according to the mass percentage, and respectively storing for later use;
Step two: preparing polyurethane foaming raw materials, mixing polyurethane I, polyurethane II and polyurethane III, hot melt adhesive, silicon dioxide and potato starch according to the mass ratio, stirring, and stirring for 60 minutes;
Step three: reaction stirring, namely putting the mixed raw materials in the step two into a reaction kettle for reaction for 100 minutes, stirring for 50 minutes, and then storing for later use;
step four: adding an auxiliary agent, sequentially adding the aqueous thickening agent, the compatilizer, the adhesive and the aqueous release agent into the polyurethane foaming raw material prepared in the third step according to the mass ratio, and stirring for 40 minutes;
step five: a mould, pouring the raw materials obtained in the fourth step into a mould, and heating for 60 minutes under the conditions of 50MPa and 200 ℃;
step six: and (3) cooling, namely cooling the raw materials processed in the mold for 60 minutes at normal temperature to obtain the polyurethane foam.
According to the invention, the polyurethane foam is prepared by mutually mixing the first polyurethane, the second polyurethane and the third polyurethane, so that the comprehensive performance of the polyurethane foam is improved, the adhesive, the hot melt adhesive and the potato starch ensure the bonding strength of the polyurethane foam, the polyurethane foam is not easy to tear, the silicon dioxide enables the polyurethane foam to have higher acid and alkali resistance, the service life of the foam is prolonged, and the polyurethane foam is suitable for popularization.
although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. an improved polyurethane foam characterized by: comprises (by mass percent): 20-30% of first polyurethane, 20-30% of second polyurethane, 20-30% of third polyurethane, 4-10% of aqueous thickening agent, 1-6% of compatilizer, 1-5% of adhesive, 2-7% of hot melt adhesive, 2-8% of aqueous release agent, 1-7% of potato starch and 0.5-3% of silicon dioxide.
2. an improved polyurethane foam according to claim 1, wherein: the first polyurethane, the second polyurethane and the third polyurethane are respectively aqueous polyurethane, thermoplastic polyurethane and wet foaming polyurethane resin.
3. An improved polyurethane foam according to claim 1, wherein: the water-based thickener is one or more of water-soluble associated polyurethane thickener and water-soluble cellulose thickener according to equal mass percentage.
4. An improved polyurethane foam according to claim 1, wherein: the compatilizer is composed of one or more of EAA, EVA, CPE and SEBS according to equal mass percentage.
5. An improved polyurethane foam according to claim 1, wherein: the adhesive is composed of one or more of epoxy resin, phenolic resin, melamine-formaldehyde resin, organic silicon resin and furan resin according to equal mass percentage, and the hot melt adhesive is EVA hot melt adhesive.
6. An improved polyurethane foam according to claim 1, wherein: the improved polyurethane foam comprises (by mass percent): 20% of polyurethane I, 20% of polyurethane II, 20% of polyurethane III, 10% of water-based thickening agent, 5% of compatilizer, 5% of adhesive, 5% of hot melt adhesive, 5% of water-based release agent, 7% of potato starch and 3% of silicon dioxide.
7. an improved polyurethane foam according to claim 1, wherein: the improved polyurethane foam comprises (by mass percent): 24% of first polyurethane, 24% of second polyurethane, 24% of third polyurethane, 8% of aqueous thickening agent, 3% of compatilizer, 3% of adhesive, 4% of hot melt adhesive, 3% of aqueous release agent, 4% of potato starch and 3% of silicon dioxide.
8. An improved polyurethane foam according to claim 1, wherein: the improved polyurethane foam comprises (by mass percent): 25% of first polyurethane, 25% of second polyurethane, 25% of third polyurethane, 6% of water-based thickener, 2% of compatilizer, 2% of adhesive, 3% of hot melt adhesive, 2% of water-based release agent, 7% of potato starch and 3% of silicon dioxide.
9. An improved polyurethane foam according to claim 1, wherein: the improved polyurethane foam comprises (by mass percent): 30% of polyurethane I, 25% of polyurethane II, 25% of polyurethane III, 4% of water-based thickening agent, 1% of compatilizer, 1% of adhesive, 7% of hot melt adhesive, 2% of water-based release agent, 2.5% of potato starch and 2.5% of silicon dioxide.
10. An improved polyurethane foam and process for its preparation according to any one of claims 1 to 9 wherein: the preparation method comprises the following steps:
The method comprises the following steps: weighing raw materials, weighing the raw materials according to the mass percentage, and respectively storing for later use;
Step two: preparing polyurethane foaming raw materials, mixing and stirring first polyurethane, second polyurethane, third polyurethane, hot melt adhesive, silicon dioxide and potato starch according to the mass ratio, and stirring for 20-60 minutes;
Step three: reaction stirring, namely putting the mixed raw materials in the step two into a reaction kettle for reaction for 30-100 minutes, stirring for 20-50 minutes, and then storing for later use;
Step four: adding an auxiliary agent, sequentially adding the aqueous thickening agent, the compatilizer, the adhesive and the aqueous release agent into the polyurethane foaming raw material prepared in the third step according to the mass ratio, and stirring for 10-40 minutes;
step five: a mould, pouring the raw materials obtained in the fourth step into a mould, and heating for 20-60 minutes under the conditions of 10-50MPa and 100-200 ℃;
Step six: and (3) cooling, namely cooling the raw materials processed in the mold for 30-60 minutes at normal temperature to obtain the polyurethane foam.
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| CN201810574826.7A CN110564131A (en) | 2018-06-06 | 2018-06-06 | improved polyurethane foam and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104231300A (en) * | 2014-09-15 | 2014-12-24 | 山东天庆科技发展有限公司 | Polyurethane foam resin and preparation method thereof |
| CN105385336A (en) * | 2015-12-29 | 2016-03-09 | 上海宏盾防伪材料有限公司 | Velvet anti-scratch waterborne polyurethane paint |
| CN105462230A (en) * | 2015-11-27 | 2016-04-06 | 江苏东昉纺织科技有限公司 | Formula of waterborne polyurethane breathable leather |
-
2018
- 2018-06-06 CN CN201810574826.7A patent/CN110564131A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104231300A (en) * | 2014-09-15 | 2014-12-24 | 山东天庆科技发展有限公司 | Polyurethane foam resin and preparation method thereof |
| CN105462230A (en) * | 2015-11-27 | 2016-04-06 | 江苏东昉纺织科技有限公司 | Formula of waterborne polyurethane breathable leather |
| CN105385336A (en) * | 2015-12-29 | 2016-03-09 | 上海宏盾防伪材料有限公司 | Velvet anti-scratch waterborne polyurethane paint |
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Application publication date: 20191213 |
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