CN106832181A - A kind of polyurethane foam material and preparation method thereof - Google Patents
A kind of polyurethane foam material and preparation method thereof Download PDFInfo
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- CN106832181A CN106832181A CN201710112796.3A CN201710112796A CN106832181A CN 106832181 A CN106832181 A CN 106832181A CN 201710112796 A CN201710112796 A CN 201710112796A CN 106832181 A CN106832181 A CN 106832181A
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- polyurethane foam
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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
- C08G18/40—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
- C08G18/08—Processes
- C08G18/14—Manufacture of cellular products
-
- 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
- C08J9/12—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 by a physical blowing agent
- C08J9/14—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 by a physical blowing agent organic
- C08J9/141—Hydrocarbons
-
- 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
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a kind of polyurethane foam material and preparation method thereof, polyurethane foam material is prepared from by white material, black material, foaming agent and nucleator by foaming, and the foaming aperture of polyurethane foam material is 60 80 μm, and thermal conductivity factor is 19 20mW/m.K；Foaming agent includes pentamethylene and isopentane, and nucleator is nitrogen or carbon dioxide；The mass ratio of white material, black material, pentamethylene, isopentane and nucleator is 98 105:7‑11:4‑8:8‑10:136‑142.The nucleator of polyurethane foam material of the invention is nitrogen or carbon dioxide, it is dissolved in nitrogen or carbon dioxide are full and uniform in white material, can cause that white material forms a large amount of stingy complexs, the size of stingy complex is small and is evenly distributed, the abscess aperture of polyurethane foam material can effectively be reduced, and make distribution of cells uniform, it is possible to decrease the thermal conductivity factor of polyurethane foam material, improve the heat-insulating property of polyurethane foam material.
Description
Technical field
The present invention relates to expanded material technical field, a kind of polyurethane foam material and its preparation side are related in particular to
Method.
Background technology
Polymeric foamable material is with polymer as matrix material, by either physically or chemically making inside polymeric matrix
Produce substantial amounts of foam structure.Because the unique foam structure of expanded material imparts a series of its excellent performance, such as density
Low, heat-insulating sound-insulating, specific strength are high, buffer etc., therefore in packing business, industry, agricultural, transportation, war industry, space flight work
The field such as industry and commodity has a wide range of applications.Conventional foamed material species has polyurethane (PU) soft and rigid foam
Plastics, polystyrene (PS) foamed plastics, polyethylene (PE) foamed plastics, polypropylene (PP) foamed plastics etc..Polyurethane foam
Plastics easy residual isocyanate in foaming process, it is harmful, and expanded material cannot recycle.Polystyrene
Foam article degraded is difficult, is also easy to produce " white pollution " problem, united nations environment tissue it is determined that stopping using PS foams
Plastic product.Polyethylene foams resistance to elevated temperatures is poor, is not suitable for being applied in high-temperature field.
The existing mouldable foam particle particle size based on thermoplastic polyurethane is larger, difficult to being fed in mould,
And it is filled into after mould that gap is larger between particle, the foaming aperture of polyurethane foamed material is big, foaming aperture skewness
Even, thermal conductivity factor is high.
The content of the invention
It is an object of the invention to provide a kind of polyurethane foam material and preparation method thereof, to solve existing polyurethane
Expanded material exist foaming aperture is big, foaming aperture problem pockety.
Therefore, the invention provides a kind of polyurethane foam material, the polyurethane foam material is by white material, black material, hair
Infusion and nucleator are prepared from by foaming, and the foaming aperture of the polyurethane foam material is 60-80 μm, and thermal conductivity factor is
19-20mW/m.K；The foaming agent includes pentamethylene and isopentane, and the nucleator is nitrogen or carbon dioxide；The white material,
The mass ratio of the black material, the pentamethylene, the isopentane and the nucleator is 98-105:7-11:4-8:8-10:136-
142。
Present invention also offers a kind of preparation method of polyurethane foam material, methods described comprises the following steps：
(1) combined polyether is added in the high-low pressure circulatory system, is provided with the filter outlet of combined polyether pipeline
Nucleator adding apparatus, when combined polyether will enter mixing tank by filter, open nucleator adding apparatus, will be into
Core agent is mixed into combined polyether, nucleator and combined polyether is added in mixing tank；
(2) foaming agent is added in mixing tank and is mixed with combined polyether, then again by mixed foaming agent and group
Polyethers is closed to be added in surge tank；
(3) pressure for keeping surge tank is 12-15Mpa, and isocyanates is added in black batch can, keeps the pressure of black batch can
Power is 12Mpa-15Mpa, and surge tank and black batch can pressure differential≤1Mpa；
(4) by pipette tips hybrid combining polyethers and isocyanates and inject and foam and obtain poly- ammonia in foaming target cavity
Ester foaming material, the temperature of the target cavity that foams is 35-50 DEG C, and pipette tips flow is 800-1500g/s.
Compared with prior art, advantages and positive effects of the present invention are：The invention provides a kind of polyurethane foam material
Material and preparation method thereof, polyurethane foam material is prepared from by white material, black material, foaming agent and nucleator by foaming, poly- ammonia
The foaming aperture of ester foaming material is 60-80 μm, and thermal conductivity factor is 19-20mW/m.K；Foaming agent includes pentamethylene and isopentane,
Nucleator is nitrogen or carbon dioxide；The mass ratio of white material, black material, pentamethylene, isopentane and nucleator is 98-105:7-11:
4-8:8-10:136-142.The nucleator of polyurethane foam material of the invention is Gas nucleation agent, can be nitrogen or two
Carbonoxide, nitrogen or carbon dioxide are added in white material, nitrogen or carbon dioxide is full and uniform is dissolved in white material, can
To cause that white material forms a large amount of stingy complexs, the size of stingy complex is small and is evenly distributed, and can effectively reduce polyurethane foam
The abscess aperture of material, and make distribution of cells uniform, such that it is able to reduce the thermal conductivity factor of polyurethane foam material, improve poly-
The heat-insulating property of urethane expanded material.Foaming effect can be effectively improved using two kinds of foaming agents of pentamethylene and isopentane.
After specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Brief description of the drawings
Fig. 1 is the optical microphotograph electron microscope of polyurethane foam material prepared by the embodiment of the present invention 1；
The optical microphotograph electron microscope of polyurethane foam material prepared by Fig. 2 comparative examples 1；
Fig. 3 is the electron microscopic electron microscope of polyurethane foam material prepared by the embodiment of the present invention 1；
Fig. 4 is the electron microscopic electron microscope of polyurethane foam material prepared by comparative example 1.
Specific embodiment
Specific embodiment of the invention is described in detail below, it should be appreciated that described herein specific
Implementation method is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Polyurethane foam material of the invention is prepared from by white material, black material, foaming agent and nucleator by foaming, poly- ammonia
The foaming aperture of ester foaming material is 60-80 μm, and thermal conductivity factor is 19-20mW/m.K；Foaming agent includes pentamethylene and isopentane,
Nucleator is nitrogen or carbon dioxide；The mass ratio of white material, black material, pentamethylene, isopentane and nucleator is 98-105:7-11:
4-8:8-10:136-142。
The nucleator of polyurethane foam material of the invention is Gas nucleation agent, can be nitrogen or carbon dioxide, is incited somebody to action
Nitrogen or carbon dioxide are added in white material so that nitrogen or carbon dioxide is full and uniform is dissolved in white material, can be made
Obtain material in vain and form a large amount of minute bubbles, the size of minute bubbles is small and is evenly distributed, and can effectively reduce the bubble of polyurethane foam material
Hole aperture, and make distribution of cells uniform, such that it is able to reduce the thermal conductivity factor of polyurethane foam material, improve polyurethane foam
The heat-insulating property of material.Foaming effect can be effectively improved using two kinds of foaming agents of pentamethylene and isopentane, poly- ammonia can be caused
The abscess of ester foaming material is finer and smoother, and foam is more evenly distributed.
Preferably, white material is combined polyether, and black material is isocyanates.
Present invention also offers the preparation method of polyurethane foam material, methods described comprises the following steps：
(1) combined polyether is added in the high-low pressure circulatory system, is provided with the filter outlet of combined polyether pipeline
Nucleator adding apparatus, when combined polyether will enter mixing tank by filter, open nucleator adding apparatus, will be into
Core agent is mixed into combined polyether, nucleator and combined polyether is added in mixing tank；
The pressure of the combined polyether fluid at the filter outlet of combined polyether pipeline is larger, and nucleator can be made quickly to mix
In entering combined polyether, it is possible to so that nucleator is full and uniform being dissolved in combined polyether, and then combined polyether shape can be caused
Into a large amount of stingy complexs, the size of stingy complex is small and is evenly distributed, and can effectively reduce the abscess hole of polyurethane foam material
Footpath, and make distribution of cells uniform, such that it is able to reduce the thermal conductivity factor of polyurethane foam material, improve polyurethane foam material
Heat-insulating property.
(2) foaming agent is added in mixing tank and is mixed with combined polyether, then again by mixed foaming agent and group
Polyethers is closed to be added in surge tank；
(3) pressure for keeping surge tank is 12-15Mpa, and isocyanates is added in black batch can, keeps the pressure of black batch can
Power is 12Mpa-15Mpa, and surge tank and black batch can pressure differential≤1Mpa；
(4) by pipette tips hybrid combining polyethers and isocyanates and inject and foam and obtain poly- ammonia in foaming target cavity
Ester foaming material, the temperature of the target cavity that foams is 35-50 DEG C, and pipette tips flow is 800-1500g/s.
Preferably, in step (1), nucleator adding apparatus can be air accumulator and air entraining valve, air accumulator and air entraining valve phase
Even, air entraining valve is arranged at filter outlet, and opening air entraining valve can cause that the Gas nucleation agent in air accumulator is mixed into combination
In polyethers.
Preferably, in step (1), the pressure of the high-low pressure circulatory system is 12-15MPa, and temperature is 18-22 DEG C.
Foaming agent is pentamethylene and isopentane, and nucleator is nitrogen or carbon dioxide.
The mass ratio of combined polyether, isocyanates, pentamethylene, isopentane and nucleator is 98-105:7-11:4-8:8-
10:136-142。
Embodiment 1
(1) combined polyether is added in the high-low pressure circulatory system, is provided with the filter outlet of combined polyether pipeline
Nucleator adding apparatus, when combined polyether will enter mixing tank by filter, open nucleator adding apparatus, will be into
Core agent carbon dioxide is mixed into combined polyether, carbon dioxide and combined polyether is added in mixing tank；High-low pressure is circulated
The pressure of system is 12MPa, and temperature is 18 DEG C；
(2) foaming agent pentamethylene and isopentane are added in mixing tank and are mixed with combined polyether, then again will mixing
Rear pentamethylene, isopentane and combined polyether are added in surge tank；
(3) pressure for keeping surge tank is 13Mpa, and isocyanates is added in black batch can, keeps the pressure of black batch can
It is 12Mpa, the pressure differential of surge tank and black batch can is 1Mpa；
(4) by pipette tips hybrid combining polyethers and isocyanates and inject and foam and obtain poly- ammonia in foaming target cavity
Ester foaming material, the temperature of the target cavity that foams is 35 DEG C, and pipette tips flow is 1000g/s；
The mass ratio of combined polyether, isocyanates, pentamethylene, isopentane and carbon dioxide is 98:8:5:8:136.
Embodiment 2
(1) combined polyether is added in the high-low pressure circulatory system, is provided with the filter outlet of combined polyether pipeline
Nucleator adding apparatus, when combined polyether will enter mixing tank by filter, open nucleator adding apparatus, will be into
Core agent nitrogen is mixed into combined polyether, nitrogen and combined polyether is added in mixing tank；The pressure of the high-low pressure circulatory system
Power is 13MPa, and temperature is 20 DEG C；
(2) foaming agent pentamethylene and isopentane are added in mixing tank and are mixed with combined polyether, then again will mixing
Rear pentamethylene, isopentane and combined polyether are added in surge tank；
(3) pressure for keeping surge tank is 13Mpa, and isocyanates is added in black batch can, keeps the pressure of black batch can
It is 14Mpa, the pressure differential of surge tank and black batch can is 1Mpa；
(4) by pipette tips hybrid combining polyethers and isocyanates and inject and foam and obtain poly- ammonia in foaming target cavity
Ester foaming material, the temperature of the target cavity that foams is 40 DEG C, and pipette tips flow is 1100g/s.
The mass ratio of combined polyether, isocyanates, pentamethylene, isopentane and carbon dioxide is 100:9:6:9:140.
Embodiment 3
(1) combined polyether is added in the high-low pressure circulatory system, is provided with the filter outlet of combined polyether pipeline
Nucleator adding apparatus, when combined polyether will enter mixing tank by filter, open nucleator adding apparatus, will be into
Core agent carbon dioxide is mixed into combined polyether, carbon dioxide and combined polyether is added in mixing tank；High-low pressure is circulated
The pressure of system is 15MPa, and temperature is 22 DEG C.
(2) foaming agent pentamethylene and isopentane are added in mixing tank and are mixed with combined polyether, then again will mixing
Rear pentamethylene, isopentane and combined polyether are added in surge tank；
(3) pressure for keeping surge tank is 15Mpa, and isocyanates is added in black batch can, keeps the pressure of black batch can
It is 14.5Mpa, the pressure differential of surge tank and black batch can is 0.5Mpa；
(4) by pipette tips hybrid combining polyethers and isocyanates and inject and foam and obtain poly- ammonia in foaming target cavity
Ester foaming material, the temperature of the target cavity that foams is 50 DEG C, and pipette tips flow is 1400g/s.
The mass ratio of combined polyether, isocyanates, pentamethylene, isopentane and carbon dioxide is 105:11:8:10:142.
Comparative example 1
(1) combined polyether is added in the high-low pressure circulatory system so that combined polyether is added in mixing tank；High-low pressure
The pressure of the circulatory system is 13MPa, and temperature is 20 DEG C；
(2) foaming agent pentamethylene and isopentane are added in mixing tank and are mixed with combined polyether, then again will mixing
Rear pentamethylene, isopentane and combined polyether are added in surge tank；
(3) pressure for keeping surge tank is 13Mpa, and isocyanates is added in black batch can, keeps the pressure of black batch can
It is 14Mpa, the pressure differential of surge tank and black batch can is 1Mpa；
(4) by pipette tips hybrid combining polyethers and isocyanates and inject and foam and obtain poly- ammonia in foaming target cavity
Ester foaming material, the temperature of the target cavity that foams is 40 DEG C, and pipette tips flow is 1100g/s.
The mass ratio of combined polyether, isocyanates, pentamethylene and isopentane is 100:9:6:9.
The optical microscope of the polyurethane foam material that embodiment 1 and comparative example 1 are obtained is distinguished as depicted in figs. 1 and 2,
By Fig. 1 and Fig. 2 contrasts as can be seen that the polyurethane foam prepared by the preparation method of polyurethane foam material of the present invention
The foaming aperture of material is small and distribution of cells is uniform.
The electron microscope picture of the polyurethane foam material that embodiment 1 and comparative example 1 are obtained is distinguished as shown in Figure 3 and Figure 4,
By Fig. 3 and Fig. 4 contrasts as can be seen that the polyurethane foam prepared by the preparation method of polyurethane foam material of the present invention
The abscess of material is finer and smoother, and foam is more evenly distributed.
Foaming aperture and the thermal conductivity factor such as table 1 of the polyurethane foam material that embodiment 1- embodiments 3 and comparative example 1 are obtained
It is shown.As can be seen from Table 1, by the preparation method of polyurethane foam material of the present invention as a result of nitrogen or titanium dioxide
Carbon uses two kinds of foaming agent pentamethylene and isopentane as nucleator, thus the polyurethane foam material for preparing hair
Abscess footpath is small, and thermal conductivity factor is low.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | |
| Foaming aperture | 65μm | 70μm | 75μm | 120μm |
| Thermal conductivity factor | 19.5 | 19.4 | 19.6 | 21.5 |
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to foregoing reality
Example is applied to be described in detail the present invention, for the person of ordinary skill of the art, still can be to foregoing implementation
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these are changed or replace
Change, do not make the spirit and scope of the essence disengaging claimed technical solution of the invention of appropriate technical solution.
Claims (6)
1. a kind of polyurethane foam material, it is characterised in that
The polyurethane foam material is prepared from by white material, black material, foaming agent and nucleator by foaming, the polyurethane hair
The foaming aperture of foam material is 60-80 μm, and thermal conductivity factor is 19-20mW/m.K；
The foaming agent includes pentamethylene and isopentane, and the nucleator is nitrogen or carbon dioxide；
The mass ratio of the white material, the black material, the pentamethylene, the isopentane and the nucleator is 98-105:7-11:
4-8:8-10:136-142。
2. polyurethane foam material as claimed in claim 1, it is characterised in that
The white material is combined polyether, and the black material is isocyanates.
3. the preparation method of polyurethane foam material as claimed in claim 1 or 2, it is characterised in that methods described is included such as
Lower step：
（1）Combined polyether is added in the high-low pressure circulatory system, nucleation is provided with the filter outlet of combined polyether pipeline
Agent adding apparatus, when combined polyether will enter mixing tank by filter, open nucleator adding apparatus, by nucleator
It is mixed into combined polyether, nucleator and combined polyether is added in mixing tank；
（2）Foaming agent is added in mixing tank and is mixed with combined polyether, it is then again that mixed foaming agent and combination is poly-
Ether is added in surge tank；
（3）The pressure for keeping surge tank is 12-15Mpa, and isocyanates is added in black batch can, and the pressure for keeping black batch can is
12Mpa-15Mpa, and surge tank and black batch can pressure differential≤1Mpa；
（4）By pipette tips hybrid combining polyethers and isocyanates and inject foaming target cavity in foam obtain polyurethane send out
Foam material, the temperature of the target cavity that foams is 35-50 DEG C, and pipette tips flow is 800-1500g/s.
4. the preparation method of polyurethane foam material as claimed in claim 3, it is characterised in that
The step（1）In, the pressure of the high-low pressure circulatory system is 12-15MPa, and temperature is 18-22 DEG C.
5. the preparation method of polyurethane foam material as claimed in claim 3, it is characterised in that
Foaming agent is pentamethylene and isopentane, and nucleator is nitrogen or carbon dioxide.
6. the preparation method of polyurethane foam material as claimed in claim 5, it is characterised in that
The mass ratio of combined polyether, isocyanates, pentamethylene, isopentane and nucleator is 98-105:7-11:4-8:8-10:
136-142。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710112796.3A CN106832181A (en) | 2017-02-28 | 2017-02-28 | A kind of polyurethane foam material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710112796.3A CN106832181A (en) | 2017-02-28 | 2017-02-28 | A kind of polyurethane foam material and preparation method thereof |
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| CN106832181A true CN106832181A (en) | 2017-06-13 |
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| CN114227967A (en) * | 2021-11-19 | 2022-03-25 | 中投(天津)智能管道股份有限公司 | Application method of cyclopentane foaming system polyurethane material in heat insulation pipeline |
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| CN114227967A (en) * | 2021-11-19 | 2022-03-25 | 中投(天津)智能管道股份有限公司 | Application method of cyclopentane foaming system polyurethane material in heat insulation pipeline |
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Application publication date: 20170613 |