CN112592577A - Continuous preparation method of glass fiber reinforced polyurethane section - Google Patents
Continuous preparation method of glass fiber reinforced polyurethane section Download PDFInfo
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- CN112592577A CN112592577A CN202011468009.7A CN202011468009A CN112592577A CN 112592577 A CN112592577 A CN 112592577A CN 202011468009 A CN202011468009 A CN 202011468009A CN 112592577 A CN112592577 A CN 112592577A
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- glass fiber
- polyurethane
- fiber reinforced
- polyurethane resin
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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
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
- C08J5/08—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/009—Use of pretreated 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
- 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
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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
- C08K9/00—Use of pretreated ingredients
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
A continuous preparation method of a glass fiber reinforced polyurethane section comprises the following steps: 1. adding polyurethane resin into a polyurethane foaming machine; 2. adding glass fiber, coupling agent and toughening agent into a mixer; 3. heating polyurethane resin, adding the heated polyurethane resin into a mixer, and mixing the heated polyurethane resin with glass fiber, a coupling agent and a toughening agent; adding the mixture into a preheating mould for curing; 4. and demolding the product to obtain the glass fiber reinforced polyurethane section. The glass fiber reinforced polyurethane section material disclosed by the invention is added with glass fiber, so that the toughness is improved to a greater extent, and the glass fiber reinforced polyurethane section material has certain acid and alkali resistance, no moisture absorption, impact resistance and good flame retardance.
Description
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to a continuous preparation method of a glass fiber reinforced polyurethane profile.
Background
The glass fiber reinforced polyurethane section is formed by pultrusion and compounding of polyurethane resin and continuous glass fiber, and the section has very high longitudinal tensile strength and rigidity due to the high-content continuous glass fiber and the pultrusion process. In addition, the glass fiber reinforced polyurethane pultrusion section has low heat conductivity coefficient, and good weather resistance and corrosion resistance. However, the tensile strength and tensile elastic modulus of the general glass fiber reinforced polyurethane pultruded profile in the direction perpendicular to the pultrusion length direction (transverse direction) are far lower than those in the longitudinal direction, the transverse tensile elongation at break is only about 1%, the profile is too brittle and has insufficient toughness, the processability of the profile is poor, and the application of the profile in the fields of buildings and the like is limited.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a continuous preparation method of a glass fiber reinforced polyurethane section, which comprises the following steps: (1) adding polyurethane resin into a polyurethane foaming machine; (2) adding glass fiber, coupling agent and toughening agent into a mixer; (3) heating polyurethane resin, adding the heated polyurethane resin into a mixer, and mixing the heated polyurethane resin with glass fiber, a coupling agent and a toughening agent; adding the mixture into a preheating mould for curing; (4) and demolding the product to obtain the glass fiber reinforced polyurethane section.
A continuous preparation method of a glass fiber reinforced polyurethane profile comprises the following components in percentage by weight:
15 to 40 percent of polyurethane resin
20 to 60 percent of glass fiber
1 to 10 percent of coupling agent
1 to 10 percent of toughening agent
The polyurethane resin includes a polymer polyol and an isocyanate.
The material temperature of the polyurethane component in the step (3) is 22-35 ℃.
The curing time in the step (3) is 1.5-3.5 hours.
Compared with the prior art, the continuous preparation method of the glass fiber reinforced polyurethane section has the following beneficial effects: the chopped glass fiber is added into the glass fiber reinforced polyurethane section, so that the characteristic of excellent longitudinal tensile mechanical property of the section is kept, the transverse tensile strength and the elastic modulus are improved, the toughness is improved to a greater extent, and the glass fiber reinforced polyurethane section has certain acid and alkali resistance, no moisture absorption, good impact resistance and good flame retardance.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.
Example 1
A continuous preparation method of a glass fiber reinforced polyurethane section comprises the following steps:
1. adding polyurethane resin into a polyurethane foaming machine;
2. adding glass fiber, coupling agent and toughening agent into a mixer;
3. heating polyurethane resin to 22 ℃, adding the polyurethane resin into a mixer, and mixing the polyurethane resin with glass fiber, a coupling agent and a toughening agent; adding the mixture into a preheating mould for curing for 1.5 hours;
4. and demolding the product to obtain the glass fiber reinforced polyurethane section.
A continuous preparation method of a glass fiber reinforced polyurethane profile comprises the following components in percentage by weight: 15% of polyurethane resin; 20% of glass fiber; 1% of a coupling agent; 1% of toughening agent.
Example 2
A continuous preparation method of a glass fiber reinforced polyurethane section comprises the following steps:
1. adding polyurethane resin into a polyurethane foaming machine;
2. adding glass fiber, coupling agent and toughening agent into a mixer;
3. heating polyurethane resin to 35 ℃, adding the polyurethane resin into a mixer, and mixing the polyurethane resin with glass fiber, a coupling agent and a toughening agent; adding the mixture into a preheating mould for curing for 3.5 hours;
4. and demolding the product to obtain the glass fiber reinforced polyurethane section.
A continuous preparation method of a glass fiber reinforced polyurethane profile comprises the following components in percentage by weight: 40% of polyurethane resin; 60% of glass fiber; 10% of a coupling agent; 10 percent of toughening agent.
Example 3
A continuous preparation method of a glass fiber reinforced polyurethane section comprises the following steps:
1. adding polyurethane resin into a polyurethane foaming machine;
2. adding glass fiber, coupling agent and toughening agent into a mixer;
3. heating polyurethane resin to 25 ℃, adding the polyurethane resin into a mixer, and mixing the polyurethane resin with glass fiber, a coupling agent and a toughening agent; adding the mixture into a preheating mould for curing for 2 hours;
4. and demolding the product to obtain the glass fiber reinforced polyurethane section.
A continuous preparation method of a glass fiber reinforced polyurethane profile comprises the following components in percentage by weight: 18% of polyurethane resin; 25% of glass fiber; 2% of a coupling agent; 3 percent of toughening agent.
Example 4
A continuous preparation method of a glass fiber reinforced polyurethane section comprises the following steps:
1. adding polyurethane resin into a polyurethane foaming machine;
2. adding glass fiber, coupling agent and toughening agent into a mixer;
3. heating polyurethane resin to 26 ℃, adding the polyurethane resin into a mixer, and mixing the polyurethane resin with glass fiber, a coupling agent and a toughening agent; adding the mixture into a preheating mould for curing for 2.3 hours;
4. and demolding the product to obtain the glass fiber reinforced polyurethane section.
A continuous preparation method of a glass fiber reinforced polyurethane profile comprises the following components in percentage by weight: 20% of polyurethane resin; 28% of glass fiber; 4% of a coupling agent; 2 percent of toughening agent.
Example 5
A continuous preparation method of a glass fiber reinforced polyurethane section comprises the following steps:
1. adding polyurethane resin into a polyurethane foaming machine;
2. adding glass fiber, coupling agent and toughening agent into a mixer;
3. heating polyurethane resin to 22 ℃, adding the polyurethane resin into a mixer, and mixing the polyurethane resin with glass fiber, a coupling agent and a toughening agent; adding the mixture into a preheating mould for curing for 1.5 hours;
4. and demolding the product to obtain the glass fiber reinforced polyurethane section.
A continuous preparation method of a glass fiber reinforced polyurethane profile comprises the following components in percentage by weight: 20% of polyurethane resin; 30% of glass fiber; 5% of a coupling agent; 4 percent of toughening agent.
The glass fiber reinforced polyurethane section bar is compositely reinforced by the glass fiber and the polyurethane, and has the advantages of certain acid and alkali resistance, no moisture absorption, good impact resistance, good flame resistance, good weather resistance and good mechanical strength by utilizing the high flame resistance, good high and low temperature properties and weather resistance of the composite material.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (4)
1. A continuous preparation method of glass fiber reinforced polyurethane section is characterized in that,
the method comprises the following steps:
(1) adding polyurethane resin into a polyurethane foaming machine;
(2) adding glass fiber, coupling agent and toughening agent into a mixer;
(3) heating polyurethane resin, adding the heated polyurethane resin into a mixer, and mixing the heated polyurethane resin with glass fiber, a coupling agent and a toughening agent; adding the mixture into a preheating mould for curing;
(4) and demolding the product to obtain the glass fiber reinforced polyurethane section.
2. The continuous preparation method of the glass fiber reinforced polyurethane profile as claimed in claim 1, wherein the profile comprises the following components in percentage by weight:
15 to 40 percent of polyurethane resin
20 to 60 percent of glass fiber
1 to 10 percent of coupling agent
1 to 10 percent of toughening agent
The continuous process for preparing a glass fiber-reinforced polyurethane profile according to claim 1, wherein the polyurethane resin comprises polymer polyol and isocyanate.
3. The continuous preparation method of glass fiber reinforced polyurethane section as claimed in claim 1, wherein the material temperature of the polyurethane component in the step (3) is 22 ℃ to 35 ℃.
4. The continuous process for preparing polyurethane profile reinforced with glass fiber as claimed in claim 1, wherein the aging time in step (3) is 1.5-3.5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011468009.7A CN112592577A (en) | 2020-12-14 | 2020-12-14 | Continuous preparation method of glass fiber reinforced polyurethane section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011468009.7A CN112592577A (en) | 2020-12-14 | 2020-12-14 | Continuous preparation method of glass fiber reinforced polyurethane section |
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| Publication Number | Publication Date |
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| CN112592577A true CN112592577A (en) | 2021-04-02 |
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| CN202011468009.7A Pending CN112592577A (en) | 2020-12-14 | 2020-12-14 | Continuous preparation method of glass fiber reinforced polyurethane section |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000040650A1 (en) * | 1999-01-08 | 2000-07-13 | Lear Automotive Dearborn, Inc. | Fiber reinforced polyurethane |
| US20050163969A1 (en) * | 2004-01-23 | 2005-07-28 | Wade Brown | Filled polymer composite and synthetic building material compositions |
| CN105176079A (en) * | 2015-09-16 | 2015-12-23 | 东莞市沃府工程塑料科技有限公司 | Chopped-glass-fiber-reinforced nylon modified material and preparation method thereof |
| CN108329458A (en) * | 2018-03-02 | 2018-07-27 | 山西凝固力新型材料有限公司 | A kind of glass fiber reinforced polyurethane composite plate and preparation method thereof |
| CN111534082A (en) * | 2020-06-12 | 2020-08-14 | 江苏省建筑科学研究院有限公司 | Transverse reinforced glass fiber reinforced polyurethane pultrusion profile and preparation method thereof |
-
2020
- 2020-12-14 CN CN202011468009.7A patent/CN112592577A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000040650A1 (en) * | 1999-01-08 | 2000-07-13 | Lear Automotive Dearborn, Inc. | Fiber reinforced polyurethane |
| US20050163969A1 (en) * | 2004-01-23 | 2005-07-28 | Wade Brown | Filled polymer composite and synthetic building material compositions |
| CN105176079A (en) * | 2015-09-16 | 2015-12-23 | 东莞市沃府工程塑料科技有限公司 | Chopped-glass-fiber-reinforced nylon modified material and preparation method thereof |
| CN108329458A (en) * | 2018-03-02 | 2018-07-27 | 山西凝固力新型材料有限公司 | A kind of glass fiber reinforced polyurethane composite plate and preparation method thereof |
| CN111534082A (en) * | 2020-06-12 | 2020-08-14 | 江苏省建筑科学研究院有限公司 | Transverse reinforced glass fiber reinforced polyurethane pultrusion profile and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 贾红兵: "《高分子材料》", 30 November 2009, 南京大学出版社 * |
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