CN111909355A - Fatigue-resistant low-density high-resilience sponge and preparation method thereof - Google Patents
Fatigue-resistant low-density high-resilience sponge and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the field of chemical industry, and particularly relates to a fatigue-resistant low-density high-resilience sponge and a preparation method thereof. The fatigue-resistant low-density high-resilience sponge has low density and extremely strong fatigue resistance, has good flame-retardant property compared with the high-resilience sponge directly foamed by TDI, increases the indentation performance of the sponge on the basis of not damaging the resilience rate, is a good material for seats of automobile drivers and movie theaters, provides better comfortable hand feeling and touch feeling for passengers, and reduces fatigue caused by long-time sitting.
Description
Technical Field
The invention belongs to the field of chemical industry, and particularly relates to a fatigue-resistant low-density high-resilience sponge and a preparation method thereof.
Background
The polyurethane foam is gradually and rapidly developed since the industrialization of the last 50 century, and is widely applied to various fields, in particular to seat cushions, back cushions, headrests, sound-absorbing and shock-absorbing cushions and the like of transportation vehicles such as cars, passenger cars, airplanes and the like and movie theaters. Because of higher rebound resilience and comfort, the passenger can feel comfortable and the fatigue of riding is reduced.
In recent years, due to the development trend of light weight of automobiles and the demand of reducing production cost of automobile main engine plants, automobile seat manufacturers have increasingly proposed the requirement of reducing the density of high-resilience foam, the fatigue resistance of high-resilience sponge is weak, and the elongation and tear strength of low-density high-resilience sponge are lost.
Disclosure of Invention
According to the defects of the prior art, the invention provides the fatigue-resistant low-density high-resilience sponge and the preparation method thereof, the TDI trimer solution with very good thermal stability is added into the system, the catalyst more suitable for high-resilience molding sponge is selected, and the polyether polyol newly developed by the applicant is adopted, so that the high-resilience foam has flame retardance, and the sponge keeps the resilience effect and the indentation performance of the sponge at low density.
The invention relates to a fatigue-resistant low-density high-resilience sponge, which comprises the following components in part by weight: the component A and the component B are mixed according to the mass ratio of 100: 30-45, preparing;
the component A is prepared from polyether polyol, polymer polyol and an auxiliary agent according to a mass ratio of 100: 40-80: 25-35;
the component B is polyisocyanate.
Furthermore, the polyether polyol is polyether polyol DEP-3033, a 3-functionality polyether polyol with molecular weight of 4000-6000 produced by Zibodexin Federal chemical industry Limited.
Furthermore, the polymer polyol is polymer polyol H45, and the solid content of the polymer polyol produced by Zibode Federal chemical industry Co., Ltd is 38-45%.
Furthermore, the auxiliary agent comprises, by weight, 1-5% of a metal catalyst, 5-15% of an amine catalyst, 3-10% of a cross-linking agent, 10-20% of a foaming agent, 35-50% of a flame retardant, 10-20% of a pore-forming agent and 2-8% of a foam stabilizer.
Furthermore, the metal catalyst is at least one of zinc isooctanoate, lead isooctanoate and dibutyltin dilaurate; the amine catalyst is at least one of N, N, N ', N' -tetraethyl methane diamine, N-ethyl morpholine, N, N, N ', N' -tetramethyl propylamine and DMEA (dimethyl ethanolamine); at least one of the crosslinking agents DETDA (diethyl toluene diamine), DMTDA (dimethyl sulfur toluene diamine) and triisopropanolamine; the foaming agent is water; the flame retardant is at least one of DDMP (2, 3-dihydro-3, 5 dihydroxy-6-methyl-4 (H) -pyran-4-one) and DMMP (dimethyl methylphosphonate); the pore-forming agent is at least one of ECOADD 3360 and ALLCHEM 3350 (Shanghai-Lengxing industries, Ltd.); the foam stabilizer is at least one of B8681 (German winning-Chuang Gaussmeter), B-5064 (Shanghai Baion chemical technology Co., Ltd.), KPS-1251 (Spanish Peixi Co., Ltd.).
Furthermore, the polyisocyanate is prepared from TDI and TDI trimer according to a mass ratio of 100: 15-35 by mixing.
The invention also provides a preparation method of the fatigue-resistant low-density high-resilience sponge, which comprises the following steps: controlling the temperature to be 25 +/-2 ℃, stirring and mixing the component A and the component B, pouring the mixture into a mold at 50-60 ℃ for molding and foaming, demolding after 5min, and standing the prepared foam for 72h to obtain the fatigue-resistant low-density high-resilience sponge.
The invention has the advantages that:
(1) the TDI tripolymer solution is added, and the tripolymer has an isocyanurate six-membered ring structure, so that the structure has very good thermal stability, the thermal decomposition temperature of the structure is 377 ℃, and the isocyanurate structure is introduced into the polyurethane material, so that the flame retardance of the foam can be effectively improved;
(2) the catalyst more suitable for the high-resilience molding sponge is selected, and the newly developed polyether polyol is adopted, so that the sponge keeps the resilience effect and the indentation performance of the sponge when in low density, and the high-resilience molding sponge is used as a good material for seats of automobile drivers and movie theaters, provides better comfortable hand feeling and touch feeling for passengers, and reduces fatigue caused by long-time sitting.
Detailed Description
The present invention is further illustrated by the following examples.
Example 1:
a fatigue-resistant low-density high-resilience sponge is prepared from a component A and a component B according to the mass ratio of 100: 30, preparing the raw materials;
the component A is prepared from polyether polyol DEP-3033, polymer polyol H45 and an auxiliary agent according to the mass ratio of 100: 50: 25;
the auxiliary agent comprises, by weight, 1% of a metal catalyst, 15% of an amine catalyst, 3% of a cross-linking agent, 20% of a foaming agent, 35% of a flame retardant, 20% of a cell opening agent and 6% of a foam stabilizer. Wherein the metal catalyst is zinc isooctanoate; the amine catalyst is N-ethyl morpholine; the cross-linking agent is triisopropanolamine; the foaming agent is water, and the flame retardant is DDMP; the pore former is ALLCHEM 3350 (Bright and Bright practical Co., Ltd.); the foam stabilizer was KPS-1251 (Peixi Spanish).
The component B is prepared from TDI and TDI tripolymer according to the mass ratio of 100: 15 are mixed together.
During preparation, the temperature is controlled to be 25 +/-2 ℃, the component A and the component B are stirred and mixed, then poured into a mold at 60 ℃ for molding and foaming, demolding is carried out after 5min, and the prepared foam is placed for 72h to obtain the fatigue-resistant low-density high-resilience sponge.
Example 2:
a fatigue-resistant low-density high-resilience sponge is prepared from a component A and a component B according to the mass ratio of 100: 40;
the component A is prepared from polyether polyol DEP-3033, polymer polyol H45 and an auxiliary agent according to the mass ratio of 100: 40: 35;
the auxiliary agent comprises 3% of metal catalyst, 10% of amine catalyst, 5% of cross-linking agent, 10% of foaming agent, 50% of flame retardant, 20% of pore-forming agent and 2% of foam stabilizer in percentage by weight, wherein the metal catalyst is lead isooctanoate; the amine catalyst is N, N, N ', N' -tetramethyl propylamine; the cross-linking agent is DETDA; the foaming agent is water, and the flame retardant is DMMP; the cell opener is ECOADD 3360 (Bright and practical Co., Ltd.); the foam stabilizer is B8681 (German winning-Chuanggauss meter).
The component B is prepared from TDI and TDI tripolymer according to the mass ratio of 100: 20 are mixed together.
During preparation, the temperature is controlled to be 25 +/-2 ℃, the component A and the component B are stirred and mixed, then poured into a mold at 55 ℃ for molding foaming, demolding is carried out after 5min, and the prepared foam is placed for 72h to obtain the fatigue-resistant low-density high-resilience sponge.
Example 3:
a fatigue-resistant low-density high-resilience sponge is prepared from a component A and a component B according to the mass ratio of 100: 45, preparing the raw materials;
the component A is prepared from polyether polyol DEP-3033, polymer polyol H45 and an auxiliary agent according to the mass ratio of 100: 70: 30;
the auxiliary agent comprises, by weight, 3% of a metal catalyst, 13% of an amine catalyst, 7% of a crosslinking agent, 20% of a foaming agent, 40% of a flame retardant, 10% of a pore-forming agent and 7% of a foam stabilizer, wherein the metal catalyst is dibutyltin dilaurate; the amine catalyst is N, N, N ', N' -tetraethyl methane diamine; the cross-linking agent is DMTDA; the foaming agent is water; the flame retardant is DDMP; the pore former is ALLCHEM 3350 (Bright and Bright practical Co., Ltd.); the foam stabilizer is B-5064 (Shanghai Baion chemical technology Co., Ltd.).
The component B is prepared from TDI and TDI tripolymer according to the mass ratio of 100: 25 are mixed together.
During preparation, the temperature is controlled to be 25 +/-2 ℃, the component A and the component B are stirred and mixed, then poured into a mold at 60 ℃ for molding and foaming, demolding is carried out after 5min, and the prepared foam is placed for 72h to obtain the fatigue-resistant low-density high-resilience sponge.
Example 4:
a fatigue-resistant low-density high-resilience sponge is prepared from a component A and a component B according to the mass ratio of 100: 40;
the component A is prepared from polyether polyol DEP-3033, polymer polyol H45 and an auxiliary agent according to the mass ratio of 100: 60: 30;
the auxiliary agent comprises, by weight, 4% of a metal catalyst, 10% of an amine catalyst, 6% of a cross-linking agent, 15% of a foaming agent, 45% of a flame retardant, 15% of a pore-forming agent and 5% of a foam stabilizer, wherein the metal catalyst is dibutyltin dilaurate; the amine catalyst is N, N, N ', N' -tetraethyl methane diamine; the cross-linking agent is DMTDA; the foaming agent is water; the flame retardant is DDMP; the pore former is ALLCHEM 3350 (Bright and Bright practical Co., Ltd.); the foam stabilizer is B-5064 (Shanghai Baion chemical technology Co., Ltd.).
The component B is prepared from TDI and TDI tripolymer according to the mass ratio of 100: 30 are mixed together.
During preparation, the temperature is controlled to be 25 +/-2 ℃, the component A and the component B are stirred and mixed, then poured into a mold at 50 ℃ for molding and foaming, demolding is carried out after 5min, and the prepared foam is placed for 72h to obtain the fatigue-resistant low-density high-resilience sponge.
Example 5:
a fatigue-resistant low-density high-resilience sponge is prepared from a component A and a component B according to the mass ratio of 100: 45, preparing the raw materials;
the component A is prepared from polyether polyol DEP-3033, polymer polyol H45 and an auxiliary agent according to the mass ratio of 100: 80: 38;
the auxiliary agent comprises, by weight, 5% of a metal catalyst, 7% of an amine catalyst, 10% of a cross-linking agent, 15% of a foaming agent, 45% of a flame retardant, 10% of a pore-forming agent and 8% of a foam stabilizer, wherein the metal catalyst is lead isooctanoate; the amine catalyst is DMEA; the cross-linking agent is DETDA; the foaming agent is water; the flame retardant is DDMP; the pore former is ALLCHEM 3350 (Bright and Bright practical Co., Ltd.); the foam stabilizer is B8681 (German winning-Chuanggauss meter).
The component B is prepared from TDI and TDI tripolymer according to the mass ratio of 100: 30 are mixed together.
During preparation, the temperature is controlled to be 25 +/-2 ℃, the component A and the component B are stirred and mixed, then poured into a mold at 55 ℃ for molding foaming, demolding is carried out after 5min, and the prepared foam is placed for 72h to obtain the fatigue-resistant low-density high-resilience sponge.
Test example:
a commercially available high-resilience sponge is taken as a comparative example, the foam is placed under a metal disc according to the standard GB/T18941-2003 with the high-resilience sponge prepared in the comparative example and the examples 1-5, and the dynamic fatigue resistance of the foam is examined by repeatedly impacting 8 ten thousand times under the pressure of 750N. As shown in Table 1, the indentation hardness was measured in GB/T10807-2006, the ball rebound was measured in GB/T6670-2008, and the oxygen index was measured in GB/T2406.2-2009, for 40% indentation hardness loss and foam thickness loss of the foam after 8 ten thousand impacts.
Table 1:
as seen from Table 1, examples 1 to 5 each had a lower 40-indentation hardness loss ratio and a lower thickness loss ratio than those of the comparative examples, and had a density of 20kg/m3When the alloy is used, the indentation hardness and the rebound resilience are similar to those of a comparative example, and the oxygen index is improved.
Claims (7)
1. The utility model provides a high resilience sponge of fatigue-resistant low density which characterized in that: the component A and the component B are mixed according to the mass ratio of 100: 30-45, preparing;
the component A is prepared from polyether polyol, polymer polyol and an auxiliary agent according to a mass ratio of 100: 40-80: 25-35;
the component B is polyisocyanate.
2. The fatigue-resistant low-density high-resilience sponge according to claim 1, wherein: the polyether polyol is polyether polyol DEP-3033, and is 3-functionality polyether polyol with molecular weight of 4000-6000 produced by ZibodeFederal chemical industry Limited.
3. The fatigue-resistant low-density high-resilience sponge according to claim 1, wherein: the polymer polyol is polymer polyol H45, and the solid content of the polymer polyol produced by ZibodeXin Federal chemical industry Limited is 38-45%.
4. The fatigue-resistant low-density high-resilience sponge according to claim 1, wherein: the auxiliary agent comprises, by weight, 1-5% of a metal catalyst, 5-15% of an amine catalyst, 3-10% of a cross-linking agent, 10-20% of a foaming agent, 35-50% of a flame retardant, 10-20% of a pore-forming agent and 2-8% of a foam stabilizer.
5. The fatigue-resistant low-density high-resilience sponge according to claim 4, wherein: the metal catalyst is at least one of zinc isooctanoate, lead isooctanoate and dibutyltin dilaurate; the amine catalyst is at least one of N, N, N ', N' -tetraethyl methane diamine, N-ethyl morpholine, N, N, N ', N' -tetramethyl propylamine and DMEA; at least one of the crosslinking agents DETDDA, DMTDA and triisopropanolamine; the foaming agent is water; the flame retardant is at least one of DDMP and DMMP; the pore-opening agent is at least one of ECOADD 3360 and ALLCHEM 3350; the foam stabilizer is at least one of B8681, B-5064 and KPS-1251.
6. The fatigue-resistant low-density high-resilience sponge according to claim 1, wherein: the polyisocyanate is prepared from TDI and TDI trimer according to the mass ratio of 100: 15-35 by mixing.
7. A preparation method of the fatigue-resistant low-density high-resilience sponge according to any one of claims 1 to 6, which is characterized by comprising the following steps: controlling the temperature to be 25 +/-2 ℃, stirring and mixing the component A and the component B, pouring the mixture into a mold at 50-60 ℃ for molding and foaming, demolding after 5min, and standing the prepared foam for 72h to obtain the fatigue-resistant low-density high-resilience sponge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010811222.7A CN111909355A (en) | 2020-08-13 | 2020-08-13 | Fatigue-resistant low-density high-resilience sponge and preparation method thereof |
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| CN202010811222.7A CN111909355A (en) | 2020-08-13 | 2020-08-13 | Fatigue-resistant low-density high-resilience sponge and preparation method thereof |
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| CN113402693A (en) * | 2021-06-29 | 2021-09-17 | 广州亚伊汽车零部件有限公司 | Formula and preparation method of high-resilience foaming material |
| CN113416410A (en) * | 2021-07-06 | 2021-09-21 | 佛山市协通橡塑制品有限公司 | Running board and preparation method thereof |
| CN114106292A (en) * | 2021-12-06 | 2022-03-01 | 甘肃银光聚银化工有限公司 | Preparation method of high-load-bearing polyurethane flexible foam |
| CN115044014A (en) * | 2022-05-16 | 2022-09-13 | 上海抚佳精细化工有限公司 | Toluene diisocyanate prepolymer and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112778486A (en) * | 2021-01-08 | 2021-05-11 | 福建省天骄化学材料有限公司 | High-density environment-friendly polymer polyol and preparation method and application thereof |
| CN113402693A (en) * | 2021-06-29 | 2021-09-17 | 广州亚伊汽车零部件有限公司 | Formula and preparation method of high-resilience foaming material |
| CN113416410A (en) * | 2021-07-06 | 2021-09-21 | 佛山市协通橡塑制品有限公司 | Running board and preparation method thereof |
| CN114106292A (en) * | 2021-12-06 | 2022-03-01 | 甘肃银光聚银化工有限公司 | Preparation method of high-load-bearing polyurethane flexible foam |
| CN115044014A (en) * | 2022-05-16 | 2022-09-13 | 上海抚佳精细化工有限公司 | Toluene diisocyanate prepolymer and preparation method and application thereof |
| CN115044014B (en) * | 2022-05-16 | 2024-05-17 | 上海抚佳精细化工有限公司 | Toluene diisocyanate prepolymer and preparation method and application thereof |
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