CN102516491B - Low-resilience headrest foam and preparation method thereof - Google Patents
Low-resilience headrest foam and preparation method thereof Download PDFInfo
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- CN102516491B CN102516491B CN 201110370272 CN201110370272A CN102516491B CN 102516491 B CN102516491 B CN 102516491B CN 201110370272 CN201110370272 CN 201110370272 CN 201110370272 A CN201110370272 A CN 201110370272A CN 102516491 B CN102516491 B CN 102516491B
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Abstract
The invention relates to a low-resilience headrest foam and a preparation method thereof. The foam comprises the following ingredients of high-activity polyether, trihydroxy polyether, polymer polyol, a foam stabilizer, an alcohol crosslinker, a composite amine catalyst and water as well as modified MDI (Diphenyl Methane Diisocyanate). The preparation method comprises the following steps of: mixing the ingredients; pouring the ingredients into a headrest mold with a face-protective material at the pressure of 10-12 MPa; and demolding after 60-90 seconds to obtain the low-resilience headrest foam. The low-resilience foam prepared by the preparation method is wide in range of index adjustment, the mold is dispensable of heating, the process is simple, no three wastes are generated, the energy consumption and auxiliary thermal equipment are saved, and thus, the production benefit is increased. The low-resilience foam foamed by using a PIP (Production Injection Packer) is applied to headrests of an automobile, the resilience within a certain range is retained, the resilience ratio is between 22% and 28%, the low-resilience foam can exert the functions of dispersion and buffer when theautomobile is in high vibration and shock due to the unique energy absorption effect of the low-resilience foam, and thus, the comfort and the safety for passengers are improved.
Description
Technical field
The invention belongs to automotive headrest foam and preparation field thereof, particularly a kind of low resilience headrest foam and preparation method thereof.
Background technology
Automotive headrest is a kind of driver comfort configuration articles for use and safety precaution articles for use.When vehicle knocked into the back, human body was because inertia effect can fall backward, and vehicle acceleration this moment or the pressure that slows down all concentrate on neck and the head of human body fragility, and headrest then plays shock absorption to this, the protection human body head.Except strengthening drive safety, automotive headrest also possesses decoration function.
The automotive headrest foam is all based on high resilience in the market, and its rebound degree is between 50～58%, though good springiness runs into automobile bumpiness, the bounce that produces during vibration is also big, and is also uncomfortable for the passenger.
Summary of the invention
Technical problem to be solved by this invention provides a kind of low resilience headrest foam and preparation method thereof, low-resilience foam with the PIP foaming is applied on the automotive headrest, both kept elasticity in the certain limit, rebound degree is between 22～28%, again because of its distinctive energy-absorbing function, so can when height vibrates and impact, play dispersiveness and shock absorption to automobile, improve motroist's comfortable and safe property.
A kind of low resilience headrest foam of the present invention, the component of described foam is:
A component material: by weight, 0～60 part trihydroxy-polyethers, 10～40 parts polymer polyatomic alcohol, 0～1.5 part suds-stabilizing agent, 0.2～2 parts diethanolamine, two-(3-dimethyl aminopropyl) amino-2-propyl alcohol of 1～3.5 part, the water of 0.1～1 part of trimethylammonium hydroxyethylethylene diamine and 2～4 parts;
B component material: modification MDI (the NE135 modification MDI that DOW company produces); The weight ratio of A component and B component is 100: 55 ± 5.
Described high activity polyether acid number is 35～50mg KOH/g.
Described trihydroxy-polyethers acid number is 230～250mg KOH/g.
Described polymer polyatomic alcohol solid content is 30～40%.
Described suds-stabilizing agent is L-580 or Y-10366.
The foam isocyanate index that described headrest adopts is 0.95～1.15.
The preparation method of a kind of low resilience headrest foam of the present invention comprises:
(1) by weight, trihydroxy-polyethers with 0～60 part, 10～40 parts polymer polyatomic alcohol, 0～1.5 part suds-stabilizing agent, 0.2～2 parts diethanolamine, two-(3-dimethyl aminopropyl) amino-2-propyl alcohol of 1～3.5 part, the water of 0.1～1 part of trimethylammonium hydroxyethylethylene diamine and 2～4 parts is poured in the premix reactor, stir under the normal temperature mixture, filter then and sealed storage;
(2) with the said mixture being A component material, is B component material with modification MDI; The material temperature of A, B material is transferred to 25～35 ℃, make a bet in the headrest mould that has facing material at 10～12MPa by weight 100: 55 ± 5, treat the demoulding after 60～90 seconds, namely get the headrest that has low-resilience foam.
Beneficial effect
(1) the present invention adopts full water foamed technology, the foam perforate, and good permeability is compared with indoor furniture aspect urethane, has both kept physical strength aspect performance, safety and environmental protection again, its condensation rate reaches more than 99%; The low-resilience foam of making, the index regulation range is wide, and mould need not heat, and technology is simple, the no three wastes, energy efficient and auxiliary heat equipment improve productivity effect;
(2) the present invention is applied on the automotive headrest with the low-resilience foam of PIP foaming, both kept elasticity in the certain limit, rebound degree is between 22～28%, again because of its distinctive energy-absorbing function, so can when height vibrates and impact, play dispersiveness and shock absorption to automobile, improve motroist's comfortable and safe property.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
(1) by weight, with 20 parts high activity polyethers, 60 parts trihydroxy-polyethers, 40 parts polymer polyatomic alcohol, 1.5 parts L-580,0.2 part diethanolamine, two-(3-dimethyl aminopropyl) amino-2-propyl alcohol of 1 part, 0.1 the water of part trimethylammonium hydroxyethylethylene diamine and 2 parts is poured in the premix reactor, stir under the normal temperature mixture, filter then and sealed storage;
(2) with the said mixture being A component material, is B component material with modification MDI; The material temperature of A, B material is transferred to 25 ℃, made a bet in the headrest mould that has facing material at 10MPa by weight 100: 50, treat the demoulding after 60 seconds, namely get the headrest that has low-resilience foam.
Embodiment 2
(1) by weight, with 80 parts high activity polyethers, 10 parts trihydroxy-polyethers, 10 parts polymer polyatomic alcohol, 0.5 part Y-10366,2 parts diethanolamine, 3.5 two-(3-dimethyl aminopropyl) amino-2-propyl alcohol of part, the water of 1 part of trimethylammonium hydroxyethylethylene diamine and 4 parts is poured in the premix reactor, stir under the normal temperature mixture, filter then and sealed storage;
(2) with the said mixture being A component material, is B component material with modification MDI; The material temperature of A, B material is transferred to 35 ℃, made a bet in the headrest mould that has facing material at 12MPa by weight 100: 60, treat the demoulding after 90 seconds, namely get the headrest that has low-resilience foam.
Claims (5)
1. one kind low resilience headrest foam, it is characterized in that: the component of described foam is:
A component material: by weight, 20～80 parts high activity polyether, 0～60 part trihydroxy-polyethers, 10～40 parts polymer polyatomic alcohol, 0～1.5 part suds-stabilizing agent, 0.2～2 parts diethanolamine, two-(3-dimethyl aminopropyl) amino-2-propyl alcohol of 1～3.5 part, the water of 0.1～1 part of trimethylammonium hydroxyethylethylene diamine and 2～4 parts; Wherein, the high activity polyether acid number is 35～50 ㎎ KOH/g; Trihydroxy-polyethers acid number is 230～250 ㎎ KOH/g, and the trihydroxy-polyethers does not get 0;
B component material: modification MDI; The weight ratio of A component and B component is 100:55 ± 5; Wherein, modification MDI is the NE135 modification MDI of DOW company production.
2. a kind of low resilience headrest foam according to claim 1, it is characterized in that: described polymer polyatomic alcohol solid content is 30～40%.
3. a kind of low resilience headrest foam according to claim 1, it is characterized in that: described suds-stabilizing agent is L-580 or Y-10366.
4. a kind of low resilience headrest foam according to claim 1, it is characterized in that: the foam isocyanate index that described headrest adopts is 0.95～1.15.
5. the preparation method of a low resilience headrest foam as claimed in claim 1 comprises:
(1) by weight, high activity polyether with 20～80 parts, 0～60 part trihydroxy-polyethers, 10～40 parts polymer polyatomic alcohol, 0～1.5 part suds-stabilizing agent, 0.2～2 part diethanolamine, two-(3-dimethyl aminopropyl) amino-2-propyl alcohol of 1～3.5 part, 0.1 the water of～1 part of trimethylammonium hydroxyethylethylene diamine and 2～4 parts is poured in the premix reactor, stir under the normal temperature mixture, filter then and sealed storage;
(2) with the said mixture being A component material, is B component material with modification MDI; The material temperature of A, B material is transferred to 25～35 ℃, make a bet in the headrest mould that has facing material at 10～12MPa by weight 100:55 ± 5, treat the demoulding after 60～90 seconds, namely get the headrest that has low-resilience foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110370272 CN102516491B (en) | 2011-11-18 | 2011-11-18 | Low-resilience headrest foam and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110370272 CN102516491B (en) | 2011-11-18 | 2011-11-18 | Low-resilience headrest foam and preparation method thereof |
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| Publication Number | Publication Date |
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| CN102516491A CN102516491A (en) | 2012-06-27 |
| CN102516491B true CN102516491B (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110370272 Active CN102516491B (en) | 2011-11-18 | 2011-11-18 | Low-resilience headrest foam and preparation method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113388084B (en) * | 2021-07-05 | 2022-10-14 | 黎明化工研究设计院有限责任公司 | Environment-friendly composition for PIP (poly-p-phenylene-ethylene) foam headrest and preparation method and application thereof |
| CN116120818A (en) * | 2023-01-15 | 2023-05-16 | 西京学院 | Preparation method of bulletproof polyurea elastomer coating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5491175A (en) * | 1992-04-10 | 1996-02-13 | The Dow Chemical Company | Polyurethane foam molding |
| US5668191A (en) * | 1995-12-21 | 1997-09-16 | Arco Chemical Technology, L.P. | One-shot cold molded flexible polyurethane foam from low primary hydroxyl polyols and process for the preparation thereof |
| CN1398913A (en) * | 2002-07-02 | 2003-02-26 | 中国重型汽车集团有限公司 | Production process of double-hardness environment-protecting polyurethane cushion |
| CN101600748A (en) * | 2006-12-11 | 2009-12-09 | 巴斯夫欧洲公司 | High elasticity soft polyurethane foam |
-
2011
- 2011-11-18 CN CN 201110370272 patent/CN102516491B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5491175A (en) * | 1992-04-10 | 1996-02-13 | The Dow Chemical Company | Polyurethane foam molding |
| US5668191A (en) * | 1995-12-21 | 1997-09-16 | Arco Chemical Technology, L.P. | One-shot cold molded flexible polyurethane foam from low primary hydroxyl polyols and process for the preparation thereof |
| CN1398913A (en) * | 2002-07-02 | 2003-02-26 | 中国重型汽车集团有限公司 | Production process of double-hardness environment-protecting polyurethane cushion |
| CN101600748A (en) * | 2006-12-11 | 2009-12-09 | 巴斯夫欧洲公司 | High elasticity soft polyurethane foam |
Non-Patent Citations (2)
| Title |
|---|
| 祝春蕾.高活性聚醚的应用.《高桥石化》.2005,第20卷(第1期),11-12. |
| 高活性聚醚的应用;祝春蕾;《高桥石化》;20050228;第20卷(第1期);11-12 * |
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| CN102516491A (en) | 2012-06-27 |
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