CN101608008B - Molding urethane foam - Google Patents
Molding urethane foam Download PDFInfo
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- CN101608008B CN101608008B CN 200810039019 CN200810039019A CN101608008B CN 101608008 B CN101608008 B CN 101608008B CN 200810039019 CN200810039019 CN 200810039019 CN 200810039019 A CN200810039019 A CN 200810039019A CN 101608008 B CN101608008 B CN 101608008B
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Abstract
The invention discloses a molding urethane foam with improved comfort, which is formed by isocyanate and a basic mixture through reaction, wherein the foaming index of the isocyanate is between 90 and 100; the basic mixture comprises the following components in percentage by weight: 45 to 78 percent of basic polyether, 16 to 50 percent of polymer polyol, and 3 to 5.25 percent of auxiliary agent. The urethane foam material overcomes the defects of the prior art, and not only keeps the original excellent performance of the urethane foam, but also has excellent vibration performance, lower hysteresis loss performance, lower stress relaxation performance and better forming processability. Thus, the urethane foam material can be applied to preparing automobile seat foams, in particular the automobile seat foams with requirements on comforts of vibration damping and the like of clients.
Description
Technical field
The present invention relates to the polyurethane foam field, specifically, relate to a kind of preferably shock damping that shows as, lower stress relaxation, lower hysteresis loss, the molded polyurethane foam that the comfortableness of higher weather resistance improves.
Background technology
The production of flexible PU foam is a common procedure, and a lot of rules of origin are in it.The foam more complicated of automotive seat need to be at in-mold molding.In order to reach enough slakings, die surface needs heat.Foam process relatively more commonly used is cold-curing technique at present, this arts demand heating mould, and die temperature approximately is controlled at about 65 degree, general about 5 minutes of the demould time of product.
During running car, because road jolts, can produce vibrations, these vibrations can be transmitted to it the occupant by seat.Low-frequency vibrations are propagated by high rebound foam, can bring discomfort to passenger.Studies show that in the range of frequency of 0-20HZ, human body is relatively more responsive; This scope Internal resonant frequency is higher, and human body sensory is more uncomfortable.Therefore, reduce the interior resonant frequency of this scope and the vibrations transmission rate under the resonant frequency, seem important.
Hysteresis loss by the test foam can be used for assessing the weather resistance of foam, thereby can assess foam to the impact of automotive seat quality.
By the stress relaxation of test foam, can assess the speed that passenger sink, thus the comfortableness of assessment automotive seat.
Molecular weight 3000-6000 is generally adopted at present polyurethane moulding foaming, and the polyvalent alcohol of functionality about 3 is as basic polyether, by with isocyanate reaction, obtain corresponding seat foam.This foam can satisfy general physicals, but is difficult to satisfy simultaneously the client to shock damping hysteresis loss, the requirement of the aspects such as stress relaxation.When the foam density that this basic polyether manufacturing obtains was 55Kg/m3, stress relaxation was 15%, and hysteresis loss is 21%, and resonant frequency is 3.6, and the transmission rate under the resonant frequency is 5.8.
Summary of the invention
The objective of the invention is for the deficiencies in the prior art, provide a kind of and can use present foam process, it is low that production has hysteresis loss, and stress relaxation is low, and the good molded polyurethane foam of vibrations performance of product is to satisfy the client to the requirement of these aspect of performances.
Another object of the present invention is to provide the application of above-mentioned foam materials on automotive seat.
Molded polyurethane foam of the present invention is made of isocyanic ester and basic mixture reaction, and isocyanic ester blow index wherein is 90-100; Described basic mixture is made of following composition: weight percent is the basic polyether of 45-78%; Weight percent is the polymer polyatomic alcohol of 16-50%; And weight percent is the auxiliary of 3%-5.25%.
Molded polyurethane foam material of the present invention, solve the deficiencies in the prior art, not only kept the original premium properties of polyurethane foam, had simultaneously more excellent vibrations performance, lower hysteresis loss performance, lower stress relaxation ability and forming process preferably.Therefore, polyurethane foamed material of the present invention can be for the preparation of automobile seat foams, and especially the client has the automobile seat foams of requirement to comfortablenesses such as shock dampings.
Embodiment
The below provides preferred embodiment of the present invention, and is described in detail, and enables to understand better function of the present invention, characteristics.
Embodiment 1
The polyurethane foamed material of embodiment 1, consisted of by tolylene diisocyanate (blow index is 95) and basic mixture, described basic mixture is made of following composition: 1) basic polyether, and this basic polyether molecular weight is at least greater than 6000, and functionality is greater than 3.Present embodiment employing molecular weight is 12000 basic polyether GEP1208Y, and consumption is 47.6 weight percents; 2) polymer polyatomic alcohol, this polyvalent alcohol are one or more polymer polyatomic alcohols or the improved polyvalent alcohol of polymkeric substance, and present embodiment adopts H45Y, and consumption is 47.6 weight percents; 3) linking agent is DEOA, and consumption is 1.43 weight percents; 4) whipping agent is water, and consumption is 2.2 weight percents; 5) tensio-active agent is silicone oil, is specially B8737 and B3724, and wherein the B8737 consumption is 0.48 weight percent, and the B3724 consumption is 0.29 weight percent; 6) catalyzer is BDE and TA33, and wherein the BDE consumption is 0.10 weight percent, and the TA33 consumption is 0.30 weight percent.
Embodiment 2
The polyurethane foamed material of embodiment 2, consisted of by tolylene diisocyanate (blow index is 98) and basic mixture, described basic mixture is made of following composition: 1) basic polyether, and this basic polyether molecular weight is at least greater than 6000, and functionality is greater than 3.Present embodiment employing molecular weight is 12000 basic polyether GEP1208Y, and consumption is 57.1 weight percents; 2) polymer polyatomic alcohol, this polyvalent alcohol are one or more polymer polyatomic alcohols or the improved polyvalent alcohol of polymkeric substance, and present embodiment adopts H45Y, and consumption is 38.1 weight percents; 3) linking agent is DEOA, and consumption is 1.5 weight percents; 4) whipping agent is water, and consumption is 2.13 weight percents; 5) tensio-active agent is silicone oil, is specially B8737 and B3724, and wherein the B8737 consumption is 0.48 weight percent, and the B3724 consumption is 0.29 weight percent; 6) catalyzer is BDE and TA33, and wherein the BDE consumption is 0.05 weight percent, and the TA33 consumption is 0.35 weight percent.
Embodiment 3
The polyurethane foamed material of embodiment 3, consisted of by tolylene diisocyanate (blow index is 91) and basic mixture, described basic mixture is made of following composition: 1) basic polyether, and this basic polyether molecular weight is at least greater than 6000, and functionality is greater than 3.Present embodiment employing molecular weight is 12000 basic polyether GEP1208Y, and consumption is 66.6 weight percents; 2) polymer polyatomic alcohol, this polyvalent alcohol are one or more polymer polyatomic alcohols or the improved polyvalent alcohol of polymkeric substance, and present embodiment adopts H45Y, and consumption is 28.6 weight percents; 3) linking agent is DEOA, and consumption is 1.43 weight percents; 4) whipping agent is water, and consumption is 2.2 weight percents; 5) tensio-active agent is silicone oil, is specially B8737 and B3724, and wherein the B8737 consumption is 0.40 weight percent, and the B3724 consumption is 0.21 weight percent; 6) catalyzer is BDE and TA33, and wherein the BDE consumption is 0.10 weight percent, and the TA33 consumption is 0.30 weight percent.
Embodiment 4
The polyurethane foamed material of embodiment 3, consisted of by tolylene diisocyanate (blow index is 95) and basic mixture, described basic mixture is made of following composition: 1) basic polyether, and this basic polyether molecular weight is at least greater than 6000, and functionality is greater than 3.Present embodiment employing molecular weight is 12000 basic polyether GEP1208Y, and consumption is 76.9 weight percents; 2) polymer polyatomic alcohol, this polyvalent alcohol are one or more polymer polyatomic alcohols or the improved polyvalent alcohol of polymkeric substance, and present embodiment adopts H45Y, and consumption is 19.35 weight percents; 3) whipping agent is water, and consumption is 2.5 weight percents; 4) tensio-active agent is silicone oil, is specially B8737 and B3724, and wherein the B8737 consumption is 0.5 weight percent, and the B3724 consumption is 0.3 weight percent; 5) catalyzer is BDE and TA33, and wherein the BDE consumption is 0.10 weight percent, and the TA33 consumption is 0.35 weight percent.
The quantitative measurement result of obtained foam materials is as shown in table 1.
This test is taken a sample with sample piece mould.Sample piece mould is of a size of 380mm * 380mm * 100mm.The temperature of sample piece mould is controlled at about 65 degree.
25%IFD, 50%IFD, the test of material puller system is used in the test of stress relaxation and hysteresis loss, and the model of puller system is.
Resonant frequency, the data communication devices such as acceleration transmission rate are crossed bumper and are tested to obtain.
The method of testing above-mentioned polyurethane foam performance is:
1) 25%IFD, the pressure head diameter is 200mm, testing method is according to TSM7100G;
2) 50%IFD, the pressure head diameter is 200mm, testing method is according to TSM7100G;
3) hysteresis loss, the pressure head diameter is 200mm, testing method is according to TSM7100G;
4) stress relaxation, the pressure head diameter is 200mm, testing method is according to TSM7100G;
5) resonant frequency, briquetting weight 50KG, constant acceleration is 0.2g, sweep rate is 1-20HZ;
6) transmission rate under the resonant frequency, briquetting weight 50KG, constant acceleration is 0.2g, sweep rate is 1-20HZ;
7) transmission rate during 6HZ, briquetting weight 50KG, constant acceleration is 0.2g, sweep rate is 1-20HZ;
8) transmission rate is 1 o'clock vibration frequency, briquetting weight 50KG, and constant acceleration is 0.2g, sweep rate is 1-20HZ;
Above-described, be preferred embodiment of the present invention only, be not to limit scope of the present invention, the above embodiment of the present invention can also make a variety of changes.Be that simple, the equivalence that every claims according to the present patent application and description are done changes and modification, all fall into the claim protection domain of patent of the present invention.
Claims (7)
1. a molded polyurethane foam is made of isocyanic ester and basic mixture reaction, and isocyanic ester blow index wherein is 90-100; Described basic mixture is made of following composition:
Weight percent is the basic polyether of 45-78%;
Weight percent is the polymer polyatomic alcohol of 16-50%; And
Weight percent is the auxiliary of 3%-5.25%;
Described basic polyether molecular weight is at least greater than 6000, and functionality is greater than 3, and described auxiliary comprises:
Catalyzer accounts for the 0.35%-0.45% of basic mixture weight percent;
Tensio-active agent accounts for the 0.65%-0.8% of basic mixture weight percent;
Linking agent accounts for the 0%-1.5% of basic mixture weight percent; And
Whipping agent accounts for the 2%-2.5% of basic mixture weight percent.
2. molded polyurethane foam according to claim 1 is characterized in that, the proportion of primary OH groups of the polyol component of described polyurethane foam is at least 80%.
3. molded polyurethane foam according to claim 1 is characterized in that, the isocyanate component of described polyurethane foam is tolylene diisocyanate.
4. molded polyurethane foam according to claim 1, it is characterized in that, the catalyzer of described polyurethane foam is selected from BDE and/or TA33, and wherein the BDE consumption accounts for the 0.05%-0.1% of basic mixture weight percent, and the TA33 consumption accounts for the 0.3%-0.35% of basic mixture weight percent.
5. molded polyurethane foam according to claim 1 is characterized in that, the whipping agent of described polyurethane foam is water.
6. molded polyurethane foam according to claim 1 is characterized in that, the linking agent of described polyurethane foam is DEOA.
7. molded polyurethane foam according to claim 1 is characterized in that, is applied to make automobile seat foams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810039019 CN101608008B (en) | 2008-06-17 | 2008-06-17 | Molding urethane foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810039019 CN101608008B (en) | 2008-06-17 | 2008-06-17 | Molding urethane foam |
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| Publication Number | Publication Date |
|---|---|
| CN101608008A CN101608008A (en) | 2009-12-23 |
| CN101608008B true CN101608008B (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200810039019 Active CN101608008B (en) | 2008-06-17 | 2008-06-17 | Molding urethane foam |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102673450A (en) * | 2012-05-22 | 2012-09-19 | 昆山飞宇精密模具有限公司 | Automobile seat |
| CN103172818B (en) * | 2013-03-01 | 2015-09-30 | 上海延锋江森座椅有限公司 | Foaming raw material, preparation method and PIP preparation technology that a kind of shaped automotive seat upholstery is used |
| CN104211906A (en) * | 2014-08-05 | 2014-12-17 | 滁州宝瑞橡胶制品有限公司 | High-springback seat cushion used in car |
| CN105348480A (en) * | 2015-11-02 | 2016-02-24 | 苏州新区佳合塑胶有限公司 | High-resilience flexible PU foam plastic formula |
| CN110105521B (en) * | 2019-05-13 | 2021-06-01 | 张会仙 | Liquid rubber vibration damping pad for railway track and application thereof |
| CN113402692A (en) * | 2021-06-25 | 2021-09-17 | 江西江铃李尔内饰系统有限公司 | Low-hysteresis-loss sponge and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101061155B (en) * | 2004-11-24 | 2010-07-21 | 旭硝子株式会社 | Soft polyurethane foam, process for producing the same and automobile seat |
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Address after: Kang Road, Pudong New Area Kangqiao Industrial Zone of Shanghai City, No. 669, 201315 Patentee after: Yanfeng Daotuo Ann seat Co. Address before: Kang an 201315 Shanghai city Pudong Kangqiao Industrial Zone No. 669 Patentee before: Shanghai Yanfeng Johnson Controls Seating Co., Ltd. |
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Address after: 201315 No. 669 Kang'an Road, Kangqiao Industrial Zone, Pudong New District, Shanghai Patentee after: Yanfeng international Seat System Co.,Ltd. Address before: 201315 No. 669 Kang'an Road, Kangqiao Industrial Zone, Pudong New District, Shanghai Patentee before: YANFENG ADIENT SEATING Co.,Ltd. |
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