CN115260741A - Fiber-reinforced polyurethane polymer composite material - Google Patents
Fiber-reinforced polyurethane polymer composite material Download PDFInfo
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- CN115260741A CN115260741A CN202211073558.3A CN202211073558A CN115260741A CN 115260741 A CN115260741 A CN 115260741A CN 202211073558 A CN202211073558 A CN 202211073558A CN 115260741 A CN115260741 A CN 115260741A
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- polyol
- fiber
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
Abstract
The invention discloses a fiber-reinforced polyurethane high-molecular composite material, which comprises polyurethane and glass fiber, wherein the polyurethane is prepared while mixing the glass fiber for thermoplastic preparation, oligomer polyol is sampled for the preparation of a polyurethane layer, polyester polyol and propylene oxide polyether polyol are utilized in the subdivision of the polyol, the hydroxyl values of the two groups of polyol are set to be 60-600mg KOH/g, the number average molecular weight of the polyol is set to be 900-5000g/mol, pyrophyllite and quartz sand materials are fully ground for the glass fiber, powder is poured into a tank furnace for heating, and the melting point in the tank furnace is set to be 500-750 ℃ for full melting. According to the invention, the glass fiber is arranged, the tensile strength of the polyurethane polymer composite material is increased by utilizing the glass fiber inside, and meanwhile, the high-temperature resistant effect of the material can be effectively improved, so that the material has a wider application range.
Description
Technical Field
The invention relates to the technical field of composite material production, in particular to a fiber reinforced polyurethane polymer composite material.
Background
With the development of the times, no matter materials used in production and life are advanced gradually, through the mixed reaction and preparation of the materials, composite materials capable of meeting various different requirements are generated, the composite materials can be customized according to different application environments, the polyurethane composite material is a material with wider application, a specific flame retardant is usually added into the traditional polyurethane composite material, the polyurethane polymer composite material added with the flame retardant belongs to a B1-grade fireproof material, but after the flame retardant is added, the whole polyurethane composite material can generate a large amount of harmful gas, the health of human beings can be harmed, meanwhile, the surrounding environment can be directly polluted to a certain degree, and the novel concept of green and environmental protection cannot be realized.
The polyurethane polymer composite material in the prior art has the following defects:
1. the reference CN113370598A discloses a fiber-reinforced thermoplastic polyurethane composite material and a preparation method thereof, wherein the composite material comprises a first carbon nanofiber polyurethane layer, a first polyurethane film layer, a nylon fiber cloth layer, a second polyurethane film layer and a second carbon nanofiber polyurethane layer which are laminated from top to bottom. The fiber-reinforced thermoplastic polyurethane composite material has good skin-friendly property, softness and antibacterial property, and is suitable for the fields of home clothing, automotive trim and medical materials, but the modern fiber-reinforced polyurethane polymer composite material is prepared by directly adopting nylon fibers generally, and the nylon fibers have high tensile effect but have certain defects in high temperature resistance and strength, so that the fiber-reinforced polyurethane polymer composite material cannot adapt to a higher-temperature area.
Disclosure of Invention
The present invention aims to provide a fiber-reinforced polyurethane polymer composite material to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a fiber reinforced polyurethane polymer composite material comprises polyurethane and glass fiber, wherein the polyurethane is prepared while glass fiber is mixed for thermoplastic preparation, oligomer polyol is sampled for preparing a polyurethane layer, polyester polyol and propylene oxide polyether polyol are utilized in the subdivision of the polyol, the hydroxyl values of the two groups of polyol are set to be 60-600mg KOH/g, the number average molecular weight of the polyol is set to be 900-5000g/mol, the glass fiber is prepared by fully grinding pyrophyllite and quartz sand materials, powder is poured into a tank furnace for heating, and the melting point of the interior of the tank furnace is set to be 500-750 ℃ for fully melting.
Preferably, the polyester polyol and the propylene oxide polyether polyol are mixed and the excess diisocyanate sampled to more than twice the equivalent weight of the polyester polyol and the propylene oxide polyether polyol is used as a catalyst to promote the sufficient mixing reaction of the polyester polyol and the propylene oxide polyether polyol.
Preferably, the added excess diisocyanate does not react sufficiently to form a less volatile isocyanate, and the viscosity of the prepolymer is reduced by the free isocyanate.
Preferably, the mixed high-temperature liquid is prepared into glass fibers with the diameter of 13-23 μm by adopting a wire drawing mode.
Preferably, the glass fiber is cut into short fibers with the length of 25mm, the short fibers are mixed into a prepolymer prepared from polyester polyol and propylene oxide polyether polyol, the prepolymer is mixed and stirred at a constant temperature by using a stirring device, and the mixed prepolymer is subjected to thermoplastic processing after the mixing and stirring are ensured to form the fiber-reinforced polyurethane polymer composite material with the required specific requirements.
Preferably, the polyurethane comprises 20-40% of polyester polyol, 20-40% of propylene oxide polyether polyol, 10-50% of diisocyanate, 5% of water and 5% of colorant.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the glass fiber is arranged, after the prepolymer prepared from the polyester polyol and the propylene oxide polyether polyol is prepared, the glass fiber is prepared in a composite manner by mixing and stirring, the tensile strength of the polyurethane polymer composite material is increased by using the internal glass fiber, and meanwhile, the high-temperature resistance effect of the material can be effectively improved, so that the material has a wider application range.
Drawings
FIG. 1 is a schematic diagram of the preparation steps of the present invention;
FIG. 2 is a schematic composition of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, the present invention provides an embodiment: a fiber reinforced polyurethane polymer composite material;
the preparation method comprises a polyurethane layer and a glass fiber mixed layer, wherein the glass fiber mixed layer is clamped in two groups of polyurethane layers, oligomer polyols are sampled for the preparation of the polyurethane layers, in the subdivision of the polyols, polyester polyols and propylene oxide polyether polyols are utilized, the hydroxyl values of the two groups of polyols are set to be 60-600mg KOH/g, and the number average molecular weight of the polyols is set to be 900-5000g/mol.
Referring to fig. 1, a fiber reinforced polyurethane polymer composite;
the polyester polyol and the propylene oxide polyether polyol are mixed, excessive diisocyanate (more than two times of the equivalent weight of the polyester polyol and the equivalent weight of the propylene oxide polyether polyol) is sampled to serve as a catalyst, the full mixing reaction of the polyester polyol and the propylene oxide polyether polyol is promoted, the added excessive diisocyanate cannot fully react to generate the isocyanate which is not easy to volatilize, and the viscosity of the prepolymer is reduced through free cyanate ester.
Referring to fig. 2, a fiber reinforced polyurethane polymer composite material;
the polyurethane comprises the following components, by weight, 20-40% of polyester polyol, 20-40% of propylene oxide polyether polyol, 10-50% of diisocyanate, 5% of water and 5% of a colorant;
the technology is matched according to the basic proportion of the main body slurry of the polyurethane polymer composite material:
group A: polyester polyol: 20 percent; propylene oxide polyether polyol: 20 percent; diisocyanate: 50 percent; water: 5 percent; colorant: 5 percent, fully mixing to achieve the matching of the main slurry of the polyurethane polymer composite material, reducing the viscosity of the prepolymer of the main slurry by using excessive diisocyanate, and being more suitable for mixing and stirring glass fibers, thereby effectively improving the reinforcing effect, but the elastic effect is poorer due to less amount of polyol;
group B: polyester polyol: 40 percent; propylene oxide polyester polyether polyol: 40 percent; diisocyanate: 10 percent; water: 5 percent; colorant: 5 percent, fully mixing to achieve the matching of the main slurry of the polyurethane polymer composite material, wherein the viscosity of the prepolymer of the main slurry is higher due to the lower content of diisocyanate, so that the situation that the glass fiber cannot be straightened after being bent is easily caused in the mixing and stirring process, and the strength of the polyurethane polymer composite material is directly reduced;
group C: polyester polyol: 30 percent; propylene oxide polyester polyether polyol: 30 percent; diisocyanate: 30 percent; water: 5 percent; colorant: 5%, intensive mixing is in order to reach the main part thick liquids to polyurethane polymer composite and carries out the ratio, because the content of diisocyanate and polyester polyol and propylene oxide polyether polyol present 1.
Referring to fig. 1, a fiber reinforced polyurethane polymer composite;
the glass fiber is prepared by fully grinding pyrophyllite and quartz sand materials, pouring powder into a tank furnace for heating, setting the melting point in the tank furnace to be 500-750 ℃ for fully melting, preparing the mixed high-temperature liquid into the glass fiber with the diameter of 13-23 mu m by adopting a wire drawing mode, cutting the glass fiber into short fiber with the length of 25mm, mixing the short fiber into a prepolymer prepared from polyester polyol and propylene oxide polyether polyol, mixing and stirring the short fiber with a stirring device at constant temperature, and performing thermoplastic processing on the mixed prepolymer after ensuring the mixing and stirring to form the fiber reinforced polyurethane polymer composite material with the required specific requirements.
Referring to fig. 1 and 2, a fiber reinforced polyurethane polymer composite;
the preparation process of the fiber reinforced polyurethane polymer composite material comprises the following steps: firstly, mixing the materials according to the following polyester polyol: 40 percent; propylene oxide polyester ether polyol: adding 40% of the mixture into a reaction kettle, heating and stirring the mixture to melt two groups of polyols, and mixing the two groups of polyols: 10% of the mixture is added into the inside of the reactor to be stirred again, the viscosity of the polyol prepolymer is reduced by using diisocyanate so as to add glass fiber at the later stage, and the mixture is stirred and then mixed with water: 5 percent; colorant: 5% of the additive enters the interior to be mixed with the final main material, the main slurry is continuously heated for standby after being stirred, the glass fiber subjected to heating and wire drawing is synchronously cut off and directly cut into short glass fiber with the length of 25mm, the short glass fiber is heated in a reaction kettle which is continuously heated, and the short glass fiber is fully mixed and stirred by the reaction kettle, so that the glass fiber is fully mixed with the slurry of the prepolymer, and the mixed prepolymer is shaped and cooled by a thermoplastic mode.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (6)
1. A fiber reinforced polyurethane polymer composite material comprises polyurethane and glass fiber, and is characterized in that: the preparation method comprises the steps of preparing polyurethane, mixing glass fiber for thermoplastic preparation, sampling oligomer polyol for preparing a polyurethane layer, utilizing polyester polyol and propylene oxide polyether polyol in the subdivision of the polyol, setting the hydroxyl value of the two groups of polyol to be 60-600mg KOH/g, setting the number average molecular weight of the polyol to be 900-5000g/mol, fully grinding pyrophyllite and quartz sand materials by the glass fiber, pouring powder into a tank furnace for heating, and setting the melting point in the tank furnace to be 500-750 ℃ for fully melting.
2. The fiber-reinforced polyurethane polymer composite material according to claim 1, wherein: the polyester polyol and the propylene oxide polyether polyol are mixed, and the sampled excessive diisocyanate is more than twice of the equivalent weight of the polyester polyol and the propylene oxide polyether polyol and is used as a catalyst to promote the full mixing reaction of the polyester polyol and the propylene oxide polyether polyol.
3. The fiber-reinforced polyurethane polymer composite material according to claim 2, wherein: the insufficient reaction of the added excess diisocyanate will produce less volatile isocyanates and reduce the viscosity of the prepolymer by free isocyanate.
4. The fiber-reinforced polyurethane polymer composite material according to claim 1, wherein: the mixed high-temperature liquid is prepared into glass fibers with the diameter of 13-23 mu m by adopting a wire drawing mode.
5. The fiber-reinforced polyurethane polymer composite material according to claim 4, wherein: the glass fiber is cut into short fiber with the length of 25mm, the short fiber is mixed into prepolymer prepared from polyester polyol and propylene oxide polyether polyol, the prepolymer is subjected to constant-temperature mixing and stirring by using a stirring device, and the mixed prepolymer is subjected to thermoplastic processing after the mixing and stirring are ensured to form the fiber-reinforced polyurethane polymer composite material with the required specific requirements.
6. The fiber-reinforced polyurethane polymer composite material according to claim 1, wherein: the polyurethane comprises 20-40% of polyester polyol, 20-40% of propylene oxide polyether polyol, 10-50% of diisocyanate, 5% of water and 5% of colorant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211073558.3A CN115260741A (en) | 2022-09-02 | 2022-09-02 | Fiber-reinforced polyurethane polymer composite material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211073558.3A CN115260741A (en) | 2022-09-02 | 2022-09-02 | Fiber-reinforced polyurethane polymer composite material |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101177525A (en) * | 2006-11-08 | 2008-05-14 | 上海昊海化工有限公司 | Fibre-reinforced polyurethane modified polyisocyanurate composite material and preparation method thereof |
| CN110951022A (en) * | 2019-12-18 | 2020-04-03 | 山东一诺威新材料有限公司 | Conjugate polyether for manufacturing glass fiber composite material and preparation method and application thereof |
| CN112094056A (en) * | 2020-09-04 | 2020-12-18 | 五河县永兴复合材料有限公司 | Preparation process of high-strength glass fiber |
| CN112480656A (en) * | 2020-12-28 | 2021-03-12 | 无锡琛华复合材料有限公司 | Environment-friendly polyurethane glass fiber composite material and preparation method thereof |
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2022
- 2022-09-02 CN CN202211073558.3A patent/CN115260741A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101177525A (en) * | 2006-11-08 | 2008-05-14 | 上海昊海化工有限公司 | Fibre-reinforced polyurethane modified polyisocyanurate composite material and preparation method thereof |
| CN110951022A (en) * | 2019-12-18 | 2020-04-03 | 山东一诺威新材料有限公司 | Conjugate polyether for manufacturing glass fiber composite material and preparation method and application thereof |
| CN112094056A (en) * | 2020-09-04 | 2020-12-18 | 五河县永兴复合材料有限公司 | Preparation process of high-strength glass fiber |
| CN112480656A (en) * | 2020-12-28 | 2021-03-12 | 无锡琛华复合材料有限公司 | Environment-friendly polyurethane glass fiber composite material and preparation method thereof |
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