WO2005012381A1 - ポリウレタンモールドフォームの製造方法及びポリウレタンモールドフォーム - Google Patents
ポリウレタンモールドフォームの製造方法及びポリウレタンモールドフォーム Download PDFInfo
- Publication number
- WO2005012381A1 WO2005012381A1 PCT/JP2004/011102 JP2004011102W WO2005012381A1 WO 2005012381 A1 WO2005012381 A1 WO 2005012381A1 JP 2004011102 W JP2004011102 W JP 2004011102W WO 2005012381 A1 WO2005012381 A1 WO 2005012381A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- foam
- polyurethane
- mold
- producing
- mass
- Prior art date
Links
Classifications
-
- 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
- C08G2101/00—Manufacture of cellular products
Definitions
- the present invention relates to a method for producing a polyurethane mold foam and a polyurethane mold foam.
- the present invention relates to a method for producing a polyurethane mold foam, particularly a polyurethane mold foam excellent in energy performance at the time of compression such as an effective compression ratio, and a polyurethane mold foam obtained by the method.
- the cells in the polyurethane mold foam are formed in a vertically long shape along the direction of gravity during molding due to the buoyancy of bubbles generated during molding and the growth of bubbles. Since the effective compression ratio of such a polyurethane molded foam against compression is higher in the major axis direction of the cell than in the minor axis direction of the cell, a load is applied particularly when used for energy absorbing materials. It is common to mold the cell in the direction of the major axis of the cell (the direction of gravity during molding).
- such a polyurethane mold foam has a high effective compression ratio in the long diameter direction of the cell, but has an extremely low effective compression ratio in the short diameter direction as compared with the long diameter direction. There is a problem that sufficient energy performance cannot be provided when the slab is compressed from multiple directions.
- the present invention has been made in view of the above circumstances, and provides a method for producing a polyurethane resin mold foam having excellent energy performance during compression such as an effective compression ratio, and a polyurethane mold foam obtained by the method.
- the purpose is to:
- the present inventors have conducted intensive studies to achieve the above object, and as a result, have found that a polyurethane foam material having an aspect ratio of cells formed in a foam obtained by free foaming of 1 to 2.5 is obtained.
- the bubbles generated during the foaming are less susceptible to the effects of gravity and foaming growth, and become small anisotropic bubbles.
- the resulting polyurethane mold Since the ratio of the major axis to the minor axis of the cell of the foam is small and the shape is closer to a sphere, the effective compression ratio for compression in the minor axis direction is improved, and the polyurethane molded foam can be used in multiple compression directions. It has excellent energy characteristics with almost the same effective compression ratio, and is especially called a thin object whose length and width are large relative to the thickness of a sheet-like foam. In the case of a urethane molded foam, the growth of bubbles in the length and width directions of the foam is suppressed, resulting in cells having a small anisotropy. The shape is smaller and more spherical, so the effective compression ratio for compression in the short diameter direction is improved, and the polyurethane molded foam has excellent energy performance that shows a high effective compression ratio even in the thickness direction. The present invention has been accomplished.
- the present invention relates to a method for producing a polyurethane mold foam in which a polyurethane foam material is injected into a cavity formed in a mold, and is foamed and molded.
- a method for producing a polyurethane molded foam comprising using a polyurethane molded material having an aspect ratio of cells formed in the obtained form of 1 to 2.5, and a method for producing the same.
- the polyurethane resin mold foam excellent in the energy performance at the time of compression, such as an effective compression rate can be provided.
- the method for producing a polyurethane mold foam of the present invention is a method for producing a polyurethane mold foam by injecting a polyurethane foam material into a cavity formed in a mold, and foaming and molding the same.
- a polyurethane foam material having an aspect ratio of cells formed in a foam obtained by free foaming of 1 to 2.5 is used.
- polyurethane foam material Using such a polyurethane foam material, inject it into the cavity formed in the mold, foam it and mold it to obtain a polyurethane mold form with excellent energy performance during compression such as effective compression ratio. It is particularly suitable as a method for producing a rigid polyurethane molded foam, especially a rigid polyurethane molded foam for an energy absorbing material.
- free foam refers to a process in which a polyurethane foam material is poured into a container having only an opening facing the gravity, for example, a cubic container having an open top surface (consisting of 5 sides and a bottom surface).
- the aspect ratio of the cells in the foam obtained by such free foaming that is, the ratio of the minor axis to the major axis is preferably 1 to 2.5. 1 or 2 is used.
- Such a polyurethane foam material is not particularly limited as long as the aspect ratio of a cell formed when stiffening by free foaming is within the above range.
- a polyol component, a foam stabilizer, a catalyst, water and an isocyanate component is not particularly limited as long as the aspect ratio of a cell formed when stiffening by free foaming is within the above range.
- polyol component in the polyurethane foam material examples include polyester polyols, polyester polyols, and polymer polyols.
- sucrose base polyols are preferably 40 to 100% by mass, more preferably 5 to 100% by mass. 0 to 90% by mass, 0 to 40% by mass of aromatic amine polyol, preferably 0 to 20% by mass, particularly preferably 0 to 10% by mass, and 0 to 60% of aliphatic amine polyol.
- % By mass preferably 10 to 50% by mass, particularly preferably 20 to 40% by mass. It is preferred to use a polyether polyol mixture.
- sucrose-based polyol When the sucrose-based polyol is less than 40% by mass, the skeleton of the obtained polyurethane foam is weakened, and not only the dimensional stability is reduced, but also the aspect ratio tends to be increased.
- the amount of the aromatic amine polyol exceeds 40% by mass, not only the activity becomes too high to increase the aspect ratio, but also swelling occurs and the moldability (dimensional stability) decreases. There is a risk.
- the content of the aliphatic amine polyol exceeds 60% by mass, not only the activity becomes too high to increase the aspect ratio, but also blisters and the like may occur, and the moldability (dimensional stability) may decrease. is there.
- sucrose-based polyol examples include a shucrose-based polyol
- examples of an aromatic amine-based polyol include TDA (tolylenediamine) -based polyol
- examples of an aliphatic amine-based polyol include a monoethanolamine-based polyol.
- foam stabilizer for example, it is preferable to use a silicone-based foam stabilizer.
- foam stabilizers include L5340 (manufactured by Nippon Tunicer), SZ1605 (manufactured by Nippon Tunicer), BY10-540 (manufactured by Toray's Dow Corning Silicone Co.) It is preferable to use one having a surface tension of 22 mNZm or more, preferably 25 mNZm or more.
- the amount of the foam stabilizer is not particularly limited, but is preferably 10 parts by mass or less, particularly preferably 2 parts by mass or less based on 100 parts by mass of the polyol.
- the lower limit of the amount of the foam stabilizer is not particularly limited, but is preferably 0.01 part by mass or more based on 100 parts by mass of the polyol.
- amine catalysts such as triethylenediamine and diethanolamine can be used as the catalyst.
- commercially available products such as TEDA-L33, TOYOCAT-ET, TOYOCAT-TRC (all manufactured by Toso-Ichi) can be used as such a catalyst.
- the amount of these compounds is not particularly limited, either, but is preferably 0.1 to 5 parts by mass with respect to 100 parts by mass of the above-mentioned polyol.
- the amount of water can be a normal amount, but is preferably 0.1 to 10 parts by mass with respect to 100 parts by mass of the polyol.
- a conventional isocyanate used as a raw material of polyurethane can be used, and is not particularly limited. I) or both can be used, but it is particularly preferable to use MDI.
- MDI any of a pure (pure) MDI (4, 4, one MDI) and a coarse (crude) MDI can be suitably used.
- a commercially available product can be used, and for example, Sumidur 44V20 (crude MDI manufactured by Sumitomo Bayer Urethane) and the like can be used.
- the amount of the isocyanate in the polyurethane foam material is preferably such that the isocyanate index in the polyurethane foam material is 100 to 200, particularly 110 to 150.
- the polyurethane foam material of the present invention can further contain, if necessary, a pigment, various fillers such as filler, a flame retardant, an antioxidant, an antioxidant, and the like.
- the method of injecting the above-mentioned polyurethane foam material into the cavity formed in the mold and foaming and molding the same is not particularly limited.
- the foaming molding preferably has a rise time of 10 to 180 seconds. If the rise time during foam molding is within such a range, the bubbles generated during foaming are less susceptible to gravity and foam growth, and are particularly anisotropic (ie, the ratio of the major axis to the minor axis). It is preferable because it becomes small bubbles.
- the method for producing the polyurethane mold foam of the present invention is not particularly limited, a polyurethane mold form having a portion whose length and width are large with respect to the thickness, particularly when the foam is actually used.
- This is suitable as a method for producing a polyurethane mold foam in which the weighting direction is the thickness direction of the foam, for example, a sheet-like polyurethane mold foam.
- the generated bubbles have anisotropy (the ratio between the major axis and the minor axis).
- the cell anisotropy of the resulting polyurethane mold foam becomes smaller and more spherical. For this reason, it is preferable because it has excellent energy performance showing a high effective compression ratio even in the thickness direction.
- the thickness of the sheet-shaped polyurethane mold foam is not particularly limited, but conventionally, when the thickness is 4 Omm or less, the anisotropy of the cells tends to increase. It is preferable to use those in the range because the effect of improving the energy performance in the thickness direction is particularly large.
- the polyurethane mold form having a portion having a length or width larger than the thickness not only the sheet-like polyurethane mold foam described above, but also a mold having a different thickness depending on a location or a partial thickness direction. It may have irregularities, etc., and has a shape such that the foam grows in the length and width directions of the foam during foam molding, for example, a sheet or a strip, particularly a foam Assuming that the projected area in the thickness direction when the gravity direction at the time of foam formation is the thickness direction is C, and the thickness is h, the shape may satisfy CZ h 2 ⁇ 2. It is suitable as a method for producing a polyurethane mold foam having such a shape.
- Polyurethane (PPG), flame retardant, foam stabilizer, catalyst, water, filler and crude MDI (C-MDI) are blended in the amounts shown in Table 1, and polyurethane foam material is injected into the mold cavity. This is foamed and molded into a sheet with a length of 25 O mm, a width of 30 mm and a thickness of 10 mm using the thickness direction as the direction of gravity to obtain a polyurethane mold foam, and the sheet thickness direction
- the effective compression ratio was measured.
- Table 1 also shows the aspect ratio of cells in the foam obtained by free-foaming each polyurethane foam material and the effective compression ratio of the obtained polyurethane mold foam.
- the method of evaluating the effective compression ratio, the method of free foaming, and the aspect ratio are as follows.
- TMCPP (Daichi Chemical)
- Foam stabilizer 1 L 5340 (manufactured by Nippon Power Co., Ltd.) Surface tension 21. lmN / m (25 ° C)
- Foam stabilizer 2 S Z 1605 (manufactured by Nippon Power Co., Ltd.) Surface tension 26.3 mN / m (25 ° C)
- Foam stabilizer 1 BY10-540 (manufactured by Toray Dow Corning Silicone) Surface tension 23.9 mN / m (25 ° C)
- Catalyst _ 1 TEDA-L 33 (Tosoh Corporation)
- Catalyst-2 TOYOCAT-ET (manufactured by Tosoichi)
- Catalyst-3 TOYOCAT-TRC (Toso-Ichisha)
- C-MD I Sumidur 44 V20 (manufactured by Sumika Bayer Perethane Co., Ltd.)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005512553A JPWO2005012381A1 (ja) | 2003-08-01 | 2004-07-28 | ポリウレタンモールドフォームの製造方法及びポリウレタンモールドフォーム |
EP04771155A EP1659139A1 (en) | 2003-08-01 | 2004-07-28 | Method of producing polyurethane mold foam and polyurethane mold foam |
US10/566,176 US20070100013A1 (en) | 2003-08-01 | 2004-07-28 | Method of producing polyurethane mold foam and polyurethane mold foam |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003205351 | 2003-08-01 | ||
JP2003-205351 | 2003-08-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005012381A1 true WO2005012381A1 (ja) | 2005-02-10 |
Family
ID=34113668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/011102 WO2005012381A1 (ja) | 2003-08-01 | 2004-07-28 | ポリウレタンモールドフォームの製造方法及びポリウレタンモールドフォーム |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070100013A1 (ja) |
EP (1) | EP1659139A1 (ja) |
JP (1) | JPWO2005012381A1 (ja) |
WO (1) | WO2005012381A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015007167A (ja) * | 2013-06-25 | 2015-01-15 | 株式会社ブリヂストン | 硬質ポリウレタンフォームの製造方法、硬質ポリウレタンフォーム、及び衝撃吸収材 |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5357297A (en) * | 1976-11-05 | 1978-05-24 | Hitachi Ltd | Manufacture of rigid poly-urethane foam by mold blowing |
JPH07148750A (ja) * | 1993-01-25 | 1995-06-13 | Toyo Tire & Rubber Co Ltd | 衝撃吸収発泡体の製造方法 |
JPH07156162A (ja) * | 1993-12-07 | 1995-06-20 | Bridgestone Corp | 衝撃吸収用モ−ルド成形品の製法 |
JPH08176256A (ja) * | 1994-12-22 | 1996-07-09 | Mitsui Toatsu Chem Inc | 軟質ポリウレタンモールドフォームの製造方法 |
JPH08193118A (ja) * | 1995-01-13 | 1996-07-30 | Takeda Chem Ind Ltd | 硬質ポリウレタンフォームおよびその製造方法 |
JPH0912667A (ja) * | 1995-06-30 | 1997-01-14 | Inoac Corp | 軟質ポリウレタンモールドフォーム |
JPH09169036A (ja) * | 1995-12-20 | 1997-06-30 | Bridgestone Corp | 衝撃吸収用モールド成形品の製造方法及びこれに使用するモールド |
JPH10298262A (ja) * | 1997-04-15 | 1998-11-10 | Bayer Corp | 水発泡エネルギー吸収フォーム |
JPH1135654A (ja) * | 1997-07-24 | 1999-02-09 | Nippon Polyurethane Ind Co Ltd | シート状軟質ポリウレタンモールドフォームの製造方法 |
JPH11181045A (ja) * | 1997-12-17 | 1999-07-06 | Mitsui Chem Inc | エネルギー吸収硬質ウレタンフォーム |
JP2002179752A (ja) * | 2000-12-15 | 2002-06-26 | Bridgestone Corp | エネルギー吸収材 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2292386A (en) * | 1994-08-17 | 1996-02-21 | Basf Corp | Polyol compositions and rigid polyisocyanate based foams containing 2-chloropr opane and aliphatic hydrocarbon blowing agents |
US6028122A (en) * | 1997-10-21 | 2000-02-22 | Basf Corporation | Energy absorbing, water blown, rigid polyurethane foam |
DE19918726C2 (de) * | 1999-04-24 | 2002-04-11 | Bayer Ag | Offenzellige Polyurethanhartschaumstoffe |
-
2004
- 2004-07-28 EP EP04771155A patent/EP1659139A1/en not_active Withdrawn
- 2004-07-28 JP JP2005512553A patent/JPWO2005012381A1/ja active Pending
- 2004-07-28 US US10/566,176 patent/US20070100013A1/en not_active Abandoned
- 2004-07-28 WO PCT/JP2004/011102 patent/WO2005012381A1/ja not_active Application Discontinuation
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5357297A (en) * | 1976-11-05 | 1978-05-24 | Hitachi Ltd | Manufacture of rigid poly-urethane foam by mold blowing |
JPH07148750A (ja) * | 1993-01-25 | 1995-06-13 | Toyo Tire & Rubber Co Ltd | 衝撃吸収発泡体の製造方法 |
JPH07156162A (ja) * | 1993-12-07 | 1995-06-20 | Bridgestone Corp | 衝撃吸収用モ−ルド成形品の製法 |
JPH08176256A (ja) * | 1994-12-22 | 1996-07-09 | Mitsui Toatsu Chem Inc | 軟質ポリウレタンモールドフォームの製造方法 |
JPH08193118A (ja) * | 1995-01-13 | 1996-07-30 | Takeda Chem Ind Ltd | 硬質ポリウレタンフォームおよびその製造方法 |
JPH0912667A (ja) * | 1995-06-30 | 1997-01-14 | Inoac Corp | 軟質ポリウレタンモールドフォーム |
JPH09169036A (ja) * | 1995-12-20 | 1997-06-30 | Bridgestone Corp | 衝撃吸収用モールド成形品の製造方法及びこれに使用するモールド |
JPH10298262A (ja) * | 1997-04-15 | 1998-11-10 | Bayer Corp | 水発泡エネルギー吸収フォーム |
JPH1135654A (ja) * | 1997-07-24 | 1999-02-09 | Nippon Polyurethane Ind Co Ltd | シート状軟質ポリウレタンモールドフォームの製造方法 |
JPH11181045A (ja) * | 1997-12-17 | 1999-07-06 | Mitsui Chem Inc | エネルギー吸収硬質ウレタンフォーム |
JP2002179752A (ja) * | 2000-12-15 | 2002-06-26 | Bridgestone Corp | エネルギー吸収材 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015007167A (ja) * | 2013-06-25 | 2015-01-15 | 株式会社ブリヂストン | 硬質ポリウレタンフォームの製造方法、硬質ポリウレタンフォーム、及び衝撃吸収材 |
Also Published As
Publication number | Publication date |
---|---|
EP1659139A1 (en) | 2006-05-24 |
JPWO2005012381A1 (ja) | 2006-09-14 |
US20070100013A1 (en) | 2007-05-03 |
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