CN105646837A - Preparation method of ultrathin polyurethane material - Google Patents

Preparation method of ultrathin polyurethane material Download PDF

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CN105646837A
CN105646837A CN 201610100551 CN201610100551A CN105646837A CN 105646837 A CN105646837 A CN 105646837A CN 201610100551 CN201610100551 CN 201610100551 CN 201610100551 A CN201610100551 A CN 201610100551A CN 105646837 A CN105646837 A CN 105646837A
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material
method
polyurethane
ultrathin
high
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CN 201610100551
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郭可锐
王诗明
安健鑫
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湖北祥源新材科技股份有限公司
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/4804Two or more polyethers of different physical or chemical nature
    • C08G18/4812Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72Polyisocyanates or polyisothiocyanates
    • C08G18/74Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2101/00Foams
    • C08G2101/0083Foams prepared using water as the sole blowing agent

Abstract

The invention discloses a preparation method of an ultrathin polyurethane material. The preparation method comprises the steps that polyether polyol, water, a stabilizer, a catalyst and a chain extender in the weight ratio being (70-90):(1-5):(0.7-2.0):(0.01-0.05):(10-20) are mixed in a high precision measurement manner at the temperature of 40-70 DEG C and the pressure of 15-30 MPa, a mixture is obtained, 10-40 parts of isocyanate is added to the mixture and stirred at a high speed, a reactant is formed and subjected to vacuum defoaming, and then the ultrathin polyurethane material can be prepared with a reaction type precise coating technology. With adoption of the method, the polyurethane material is thinner and has high compression ratio, shock resistance, sealing performance and good resilience, further, sufficient reaction of isocyanate is guaranteed, and formed cells are uniformly distributed.

Description

一种超薄聚氨酯材料的制备方法 A method for preparing a polyurethane material ultrathin

技术领域 FIELD

[0001 ]本发明属于超薄材料制备领域,具体涉及一种超薄聚氨酯材料的制备方法。 [0001] The present invention belongs to the field of preparation of thin material, particularly relates to a process for the preparation of thin polyurethane material.

背景技术 Background technique

[0002]目前手机产品越来越薄,对其中的抗冲击材料,密封材料的要求也越来越高,现有技术的泡棉产品普遍较厚,国内理想的超薄产品通常也只能达到1_,满足不了目前技术的需求。 [0002] At present mobile phones thinner, for which the impact resistant material, sealing material requirements have become more sophisticated, the prior art generally thicker foam products, domestic products are usually thin ideal can only reach 1_, can not meet the current demand technology.

[0003] 中国专利:申请公布号为CN104987702A,申请公布日为2015年10月21日的发明专利公开了一种聚氨酯泡棉及其制备方法,该聚氨酯泡棉由组分A和组分B聚合形成,组分A包括含有两个或两个以上的异氰酸酯基团的异氰酸酯,组分B包括聚乙烯和多元醇,制备时,先将组分A和组分B置于容器中并搅拌均匀形成预聚体,再向所述容器中充入发泡气体,使所述容器中的压强达到IMPa〜lOMPa,保持5分钟〜15分钟,然后将预聚体通过管道输送至涂布机,并通过所述涂布机将预聚体涂布在基材上,最后将涂布有所述预聚体的所述基材置于固化炉中进行固化成型即可。 [0003] Chinese Patent: Application Publication No. CN104987702A, published Japanese application discloses a method of preparing polyurethane foam and patent disclosure October 21, 2015, which is a polyurethane foam by polymerizing component A and component B forming, component a comprising an isocyanate containing an isocyanate group of two or more of the component B include polyethylene and polyhydric alcohols, when prepared, the first component a and component B in a container and stirred uniformly formed prepolymer, again the vessel was charged with the foaming gas, so that pressure within the container reaches IMPa~lOMPa, held for 5 minutes ~ 15 minutes, and then the prepolymer fed to the coater through line, and by the coater prepolymer coated on the substrate, and finally the substrate is coated with the prepolymer was placed in a curing oven for curing and molding can. 虽然该发明通过在异氰酸酯和多元醇中添加聚乙烯,使得异氰酸酯和多元醇聚合形成的聚氨酯泡棉的微观结构的强度提高,从而改善聚氨酯泡棉的耐磨性,但仍然存在以下缺陷: Although this invention by the addition of polyethylene isocyanate and polyol such that the strength of the polyurethane foam microstructure isocyanate and a polyol polymerized to form improved, thereby improving the wear resistance of the polyurethane foam, but still has the following defects:

该方法先将组分A和组分B直接混合搅拌形成预聚体,即采用将原料一次性混合的方式,该方式使得异氰酸酯无法在体系中分散足够均匀,因此无法保证异氰酸酯充分反应、形成的泡孔分布足够均匀。 The method first component A and component B are directly mixed and stirred to form a prepolymer, i.e., by way of the material disposable mixing in such a way that the isocyanate was not dispersed sufficiently uniformly in the system, there is no guarantee isocyanate fully reacted, formed sufficiently uniform cell distribution.

发明内容 SUMMARY

[0004]本发明的目的是克服现有技术存在的无法保证异氰酸酯充分反应、形成的泡孔分布足够均匀的问题,提供一种可有效保证异氰酸酯充分反应、形成的泡孔分布足够均匀的超薄聚氨酯材料的制备方法。 [0004] The object of the present invention is to overcome the problems of the prior art can not guarantee isocyanate sufficiently reacted, the cell distribution formed by sufficiently uniform problems and to provide an effective guarantee isocyanate sufficiently reacted, the cell distribution formed by sufficiently uniform ultrathin the method of preparing a polyurethane material.

[0005]为实现以上目的,本发明的技术方案如下: [0005] To achieve the above object, the technical solution of the present invention is as follows:

一种超薄聚氨酯材料的制备方法,依次包括以下步骤: A method for preparing ultra-thin polyurethane material, comprising the sequential steps of:

步骤一、将聚醚多元醇、水、稳定剂、催化剂、扩链剂按重量份比70〜90:1〜5: 0.7〜2:0.01〜0.05:10〜20于40〜70°C、15〜30MPa下进行高精度计量混合以得到混合料; A step, a polyether polyol, water, stabilizers, catalysts, chain extenders in parts by weight ratio of 70~90: 1 ~ 5: 0.7~2: 0.01~0.05: 10-20 at 40~70 ° C, 15 high-precision measurement ~30MPa mixed to obtain a mixture;

步骤二、先向混合料中加入异氰酸酯高速搅拌以形成反应物,再将反应物真空脱泡,随后采用反应式精密涂布技术即可制备得到超薄聚氨酯材料,其中,所述异氰酸酯的加入量与混合料中聚醚多元醇的重量份比为10〜40:70〜90。 Step two, Xianxiang mix the isocyanate was added to form a reaction was stirred at high speed, and the reaction was degassed in vacuo, followed by precision coating techniques using reactive thin polyurethane material can be prepared, wherein the added amount of the isocyanate ester and polyether polyol mix ratio of 10 ~ 40 parts by weight: 70~90.

[0006] 所述步骤一中,混合时间为10〜30min; [0006] a step, the mixing time is 10~30min;

所述步骤二中,搅拌转速大于等于4000r/min,搅拌时间为I〜5min。 Step two, the stirring rotational speed not less than 4000r / min, stirring time I~5min.

[0007] 所述聚醚多元醇由聚醚多元醇A、聚醚多元醇B、聚醚多元醇C分别按百分比含量45%〜65%、10%〜50%、5%〜25%混合而成,其中,聚醚多元醇A为羟值在250〜350的三官能团聚醚多元醇,聚醚多元醇B为羟值在25〜80的三官能团聚醚多元醇,聚醚多元醇C为羟值在25〜80的二官能团聚醚多元醇。 [0007] The polyether polyols from a polyether polyol A, B polyether polyols, polyether polyols C are the percentage content of 45% ~ 65%, 10% ~ 50%, 5% ~ 25% mixing percent, wherein the polyether polyol of hydroxyl value a hydroxyl value of 25~80 trifunctional polyether polyol, a polyether polyol as 250~350 C trifunctional polyether polyol, a polyether polyol B a hydroxyl value of 25~80 bifunctional polyether polyol.

[0008] 所述聚醚多元醇A为SK Y-1030聚醚多元醇,所述聚醚多元醇B为P0P3628聚醚多元醇,所述聚醚多元醇C为聚丙二醇PPG3000聚醚多元醇。 [0008] A is the polyether polyol SK Y-1030 polyether polyol, the polyether polyol B is P0P3628 polyether polyol, the polyether polyol C PPG3000 polypropylene glycol polyether polyols.

[0009]所述异氰酸酯为二苯基甲烷二异氰酸酯,所述稳定剂为二甲基聚硅氧烷和聚醚的嵌段共聚物,所述催化剂为三亚乙基二胺、二月桂酸二丁基锡或辛酸亚锡,所述水为离子交换水或蒸馈水。 [0009] The isocyanate is diphenylmethane diisocyanate, the stabilizer is a block copolymer of dimethyl polysiloxane and polyether, the catalyst is triethylenediamine, dibutyl tin dilaurate or stannous octoate, ion-exchanged water, the water is feed water or steam.

[0010]与现有技术相比,本发明的有益效果为: [0010] Compared with the prior art, the beneficial effects of the present invention are:

本发明一种超薄聚氨酯材料的制备方法先将除异氰酸酯之外的原料进行高精度计量混合,再加入异氰酸酯混合,真空脱泡后采用反应式精密涂布技术即可制备得到超薄聚氨酯材料,一方面,该方法不仅通过配方的调整使得整个体系的初始黏度很低,制备得到的聚氨酯材料在未压缩状态的厚度可达0.1mm以下,而且使得聚氨酯材料内部泡孔呈半开孔结构,具有高压缩比,抗冲击性能和密封性能良好,同时还能保持优异的回弹性,另一方面,该方法采用分步混合的方式保证了异氰酸酯在体系中能够分散足够均匀,使得形成的泡孔分布足够均匀,从而确保聚氨酯材料具有优良的机械性能。 A method for preparing a polyurethane material of the present invention is ultra-thin materials other than the first isocyanate high precision metering and mixing, then add the isocyanate mixture, after vacuum defoaming coating technique using a reactive precision thin polyurethane material can be prepared, in one aspect, this method not only by adjusting such that the initial viscosity of the formulation of the entire system is low, the prepared polyurethane material in an uncompressed state, the thickness of up to 0.1mm or less, and that the polyurethane material inside the cell in a semi-open structure, having high compression ratio, excellent impact resistance and sealing performance, while maintaining excellent resilience, on the other hand, the method using a stepwise manner to ensure the mixing of the isocyanate in the system can be dispersed sufficiently uniform, so that the cell distribution formed sufficiently uniform to ensure that a polyurethane material having excellent mechanical properties. 因此,本发明不仅使得聚氨酯材料厚度较薄、具有高压缩比、抗冲击性能和密封性能以及回弹性良好,而且保证了异氰酸酯充分反应、形成的泡孔分布足够均匀。 Accordingly, the present invention is not so thin polyurethane material, having a high compression ratio, the impact resistance and good sealing properties and resilience, but also to ensure the full reaction of the isocyanate, the cell is formed sufficiently uniform distribution.

具体实施方式 detailed description

[0011 ]下面结合具体实施方式对本发明作进一步详细的说明。 [0011] DETAILED DESCRIPTION The following embodiments of the present invention will be further described in detail.

[0012] —种超薄聚氨酯材料的制备方法,依次包括以下步骤: [0012] - method of producing an ultra-thin polyurethane material, comprising the sequential steps of:

步骤一、将聚醚多元醇、水、稳定剂、催化剂、扩链剂按重量份比70〜90:1〜5:0.7〜2: A step, a polyether polyol, water, stabilizers, catalysts, chain extenders in parts by weight ratio of 70~90: 1 ~ 5: 0.7~2:

0.01〜0.05:10〜20于40〜70°C、15〜30MPa下进行高精度计量混合以得到混合料; 0.01~0.05: 10-20 at 40~70 ° C, to give a highly accurate metering and mixing the mixture 15~30MPa;

步骤二、先向混合料中加入异氰酸酯高速搅拌以形成反应物,再将反应物真空脱泡,随后采用反应式精密涂布技术即可制备得到超薄聚氨酯材料,其中,所述异氰酸酯的加入量与混合料中聚醚多元醇的重量份比为10〜40:70〜90。 Step two, Xianxiang mix the isocyanate was added to form a reaction was stirred at high speed, and the reaction was degassed in vacuo, followed by precision coating techniques using reactive thin polyurethane material can be prepared, wherein the added amount of the isocyanate ester and polyether polyol mix ratio of 10 ~ 40 parts by weight: 70~90.

[0013] 所述步骤一中,混合时间为10〜30min; [0013] a step, the mixing time is 10~30min;

所述步骤二中,搅拌转速大于等于4000r/min,搅拌时间为I〜5min。 Step two, the stirring rotational speed not less than 4000r / min, stirring time I~5min.

[0014] 所述聚醚多元醇由聚醚多元醇A、聚醚多元醇B、聚醚多元醇C分别按百分比含量45%〜65%、10%〜50%、5%〜25%混合而成,其中,聚醚多元醇A为羟值在250〜350的三官能团聚醚多元醇,聚醚多元醇B为羟值在25〜80的三官能团聚醚多元醇,聚醚多元醇C为羟值在25〜80的二官能团聚醚多元醇。 [0014] The polyether polyols from a polyether polyol A, B polyether polyols, polyether polyols C are the percentage content of 45% ~ 65%, 10% ~ 50%, 5% ~ 25% mixing percent, wherein the polyether polyol of hydroxyl value a hydroxyl value of 25~80 trifunctional polyether polyol, a polyether polyol as 250~350 C trifunctional polyether polyol, a polyether polyol B a hydroxyl value of 25~80 bifunctional polyether polyol.

[0015] 所述聚醚多元醇A为SK Y-1030聚醚多元醇,所述聚醚多元醇B为P0P3628聚醚多元醇,所述聚醚多元醇C为聚丙二醇PPG3000聚醚多元醇。 The [0015] Polyether Polyol A SK Y-1030 is a polyether polyol, the polyether polyol B is P0P3628 polyether polyol, the polyether polyol C PPG3000 polypropylene glycol polyether polyols.

[0016]所述异氰酸酯为二苯基甲烷二异氰酸酯,所述稳定剂为二甲基聚硅氧烷和聚醚的嵌段共聚物,所述催化剂为三亚乙基二胺、二月桂酸二丁基锡或辛酸亚锡,所述水为离子交换水或蒸馈水。 [0016] The isocyanate is diphenylmethane diisocyanate, the stabilizer is a block copolymer of dimethyl polysiloxane and polyether, the catalyst is triethylenediamine, dibutyl tin dilaurate or stannous octoate, ion-exchanged water, the water is feed water or steam.

[0017]本发明的原理说明如下: [0017] The principles of the present invention is described below:

本发明提供了一种通过一步法制备超薄聚氨酯材料的方法,得到的产品在未压缩状态下的厚度可达0.1mm以下,产品泡孔孔径仅为70〜120um,且分布较均匀,具有高压缩比,抗冲击性能、密封性能和回弹性良好。 The present invention provides a method of thin polyurethane material prepared by one step, the product obtained in the uncompressed thickness of up to 0.1mm or less in a state, the product foam hole diameter is only 70~120um, and more uniform distribution, with high compression ratio, impact resistance, good sealing properties and resiliency. 各步骤具体说明如下: Each step is specifically described as follows:

步骤一: step one:

为精确控制异氰酸酯指数(异氰酸酯指数=异氰酸酯的当量数/多元醇的当量数),同时精确的控制反应体系的黏度,确保整个反应的效率,该步骤将除异氰酸酯之外的其他原料进行高精度计量混合。 To accurately control the isocyanate index (isocyanate index = number of equivalents of the number of equivalents of isocyanate / polyol), while precise control of the viscosity of the reaction system, to ensure the efficiency of the reaction, the steps other ingredients except the isocyanate were accurately metered mixing.

[0018]步骤二: [0018] Step II:

该步骤中,后加入异氰酸酯可使其在体系中混合的足够均匀,并充分反应,获得更好的分散性,这是导致泡孔分布足够均匀的重要因素。 In this step, after addition of the isocyanate may be sufficiently uniform so that mixing in the system, and adequate reaction to obtain better dispersion, which is an important factor in a sufficiently uniform cell distribution.

[0019]另外,将搅拌转速控制在4000r/min以上也有利于保证泡孔分布均匀。 [0019] Further, the stirring speed at 4000r / min or more may also help to ensure a uniform distribution of cells.

[0020] 实施例1: [0020] Example 1:

一种超薄聚氨酯材料的制备方法,依次按照以下步骤进行: A method for preparing ultra-thin polyurethane material, according to the following steps in sequence:

步骤一、将聚醚多元醇、水、稳定剂、催化剂、扩链剂按重量份比70:1:0.7:0.01: 10于60°C、20MPa下进行高精度计量混合20min以得到混合料,其中,所述稳定剂为娃油,所述催化剂为三亚乙基二胺,所述水为离子交换水; A step, a polyether polyol, water, stabilizers, catalysts, chain extenders in parts by weight ratio of 70: 20min for accurately metering and mixing to obtain a mixture, under 20MPa 10 to 60 ° C,: 1: 0.7: 0.01 wherein the stabilizing agent is baby oil, the catalyst is triethylenediamine, the water is ion-exchanged water;

步骤二、先向混合料中加入异氰酸酯以4000r/min的转速搅拌5min以形成反应物,再将反应物真空脱泡,随后采用反应式精密涂布技术即可制备得到超薄聚氨酯材料,其中,所述聚醚多元醇由聚醚多元醇A、聚醚多元醇B、聚醚多元醇C分别按百分比含量45%、30%、25%混合而成,其中,聚醚多元醇A为SK Y-1030聚醚多元醇(羟值290〜330),聚醚多元醇B为(羟值25〜29)P0P3628聚醚多元醇,聚醚多元醇C为(羟值54〜58)聚丙二醇PPG3000聚醚多元醇,所述异氰酸酯为二苯基甲烷二异氰酸酯,所述异氰酸酯的加入量与混合料中聚醚多元醇的重量份比为10:70。 Step two, Xianxiang mix was added to the isocyanate speed of 4000r / min 5min stirring to form a reaction product, and the reaction was degassed in vacuo, followed by precision coating techniques using reactive thin polyurethane material can be prepared, wherein the polyether polyol is a polyether polyol A, B polyether polyols, polyether polyols C are the percentage content of 45%, 30%, 25% mixed, wherein A is a polyether polyol SK Y -1030 polyether polyol (hydroxyl value 290~330), B is a polyether polyol (hydroxyl value 25~29) P0P3628 polyether polyol, a polyether polyol is C (hydroxyl value 54~58) polyethylene glycol PPG3000 ether polyols, the isocyanate is diphenylmethane diisocyanate, the isocyanate is added in an amount of polyether polyol with a mix weight ratio of ten seventy.

[0021] 实施例2: [0021] Example 2:

步骤同实施例1,不同之处在于: Step in Example 1, except that:

所述步骤一中,聚醚多元醇、水、稳定剂、催化剂、扩链剂的重量份比为90:5: 2:0.05:20,混合温度为700C,压强为30MPa,混合时间为1min,催化剂为二月桂酸二丁基锡; In a step, a polyether polyol, water, stabilizers, catalysts, chain extender parts by weight ratio of 90: 5: 2: 0.05: 20, the mixing temperature is 700C, a pressure of 30MPa, mixing time of 1min, The catalyst is dibutyl tin dilaurate;

所述步骤二中,搅拌转速为5000r/min,搅拌时间为Imin,聚醚多元醇A、聚醚多元醇B、聚醚多元醇C的百分比含量分别为65%、10%、25%,异氰酸酯的加入量与混合料中聚醚多元醇的重量份比为40:90。 Step two, the stirring speed of 5000r / min, stirring time Imin, the percentage content of the polyether polyol A, B the polyether polyol, the polyether polyol C were 65%, 10%, 25%, isocyanate the added amount of polyether polyol mix ratio of 40:90 parts by weight.

[0022] 实施例3: [0022] Example 3:

步骤同实施例1,不同之处在于: Step in Example 1, except that:

所述步骤一中,聚醚多元醇、水、稳定剂、催化剂、扩链剂的重量份比为80:3: 1.5: In a step, a polyether polyol, water, stabilizers, catalysts, chain extender parts by weight ratio of 80: 3: 1.5:

0.03:15,混合温度为40 0C,压强为15MPa,混合时间为30min,催化剂为辛酸亚锡,水为蒸馏水; 0.03: 15, the mixing temperature of 40 0C, pressure is 15MPa, the mixing time was 30min, the catalyst is stannous octoate, distilled water;

所述步骤二中,搅拌时间为5min,聚醚多元醇A、聚醚多元醇B、聚醚多元醇C的百分比含量分别为45%、50%、5%,异氰酸酯的加入量与混合料中聚醚多元醇的重量份比为25:80。 Step II The stirring time of 5min, a percentage content of the polyether polyol A, B the polyether polyol, the polyether polyol C were 45%, 50%, 5%, the amount of isocyanate was added and the mix parts by weight of polyether polyol 25:80.

[0023]对采用上述实施例方法制得的超薄聚氨酯产品进行压缩力偏转测试,结果表明:所述产品压缩至10%厚度时所受的压强不大于0.lN/mm2,在25°C下的压缩永久变形不大于3%(25°C下压缩50%,保持22小时),同时,该产品可以保持至少90%的初始厚度(70°C下压缩50%,保持22小时)。 [0023] The resulting thin polyurethane products using the above embodiment the compression force deflection test method, the results show that: the product is compressed to a pressure suffered no greater than 10% of the thickness 0.lN / mm2, at 25 ° C compression set at not more than 3% (50% compression at 25 ° C, 22 hours), at the same time, the product can be maintained at least 90% of the initial thickness (50% compression at 70 ° C, 22 hours).

Claims (5)

  1. 1.一种超薄聚氨酯材料的制备方法,其特征在于: 所述制备方法依次包括以下步骤: 步骤一、将聚醚多元醇、水、稳定剂、催化剂、扩链剂按重量份比70〜90:1〜5:0.7〜2:0.01〜0.05:10〜20于40〜70°C、15〜30MPa下进行高精度计量混合以得到混合料; 步骤二、先向混合料中加入异氰酸酯高速搅拌以形成反应物,再将反应物真空脱泡,随后采用反应式精密涂布技术即可制备得到超薄聚氨酯材料,其中,所述异氰酸酯的加入量与混合料中聚醚多元醇的重量份比为10〜40:70〜90。 1. A method for preparing ultra-thin polyurethane material, wherein: the manufacturing method sequentially comprising the following steps: Step one, polyether polyol, water, stabilizers, catalysts, chain extenders in parts by weight ratio of 70~ 90: 1 ~ 5: 0.7~2: 0.01~0.05: 10-20 at 40~70 ° C, for the high-precision measurement 15~30MPa mixed to obtain mixture; step two, Xianxiang mix isocyanate-speed stirring parts by weight to form a reaction product, and the reaction was degassed in vacuo, followed by precision coating techniques using reactive thin polyurethane material can be prepared, wherein the amount of isocyanate with a polyether polyol mix ratio to 10 ~ 40: 70~90.
  2. 2.根据权利要求1所述的一种超薄聚氨酯材料的制备方法,其特征在于: 所述步骤一中,混合时间为10〜30min; 所述步骤二中,搅拌转速大于等于4000r/min,搅拌时间为I〜5min。 The method of preparing an ultra-thin polyurethane material according to claim 1, wherein: said step a, the mixing time is 10~30min; step II, the stirring rotational speed not less than 4000r / min, stirring time I~5min.
  3. 3.根据权利要求1或2所述的一种超薄聚氨酯材料的制备方法,其特征在于:所述聚醚多元醇由聚醚多元醇A、聚醚多元醇B、聚醚多元醇C分别按百分比含量45%〜65%、10%〜50%、5%〜25%混合而成,其中,聚醚多元醇A为羟值在250〜350的三官能团聚醚多元醇,聚醚多元醇B为羟值在25〜80的三官能团聚醚多元醇,聚醚多元醇C为羟值在25〜80的二官能团聚醚多元醇。 The method of preparing an ultra-thin polyurethane or material according to claim 12, wherein: the polyether polyol is a polyether polyol A, polyether polyols B, C, respectively, a polyether polyol percentage content of 45% ~ 65%, 10% ~ 50%, 5% ~ 25% mixed, wherein a is a polyether polyol hydroxyl value of trifunctional polyether polyol 250~350, the polyether polyol B is a hydroxyl value of 25~80 trifunctional polyether polyol, a polyether polyol of hydroxyl value C difunctional polyether polyol is 25~80.
  4. 4.根据权利要求3所述的一种超薄聚氨酯材料的制备方法,其特征在于:所述聚醚多元醇A为SK Y-1030聚醚多元醇,所述聚醚多元醇B为POP3628聚醚多元醇,所述聚醚多元醇C为聚丙二醇PPG3000聚醚多元醇。 4. A method for preparing an ultra-thin polyurethane material according to claim 3, wherein: the polyether polyol A SK Y-1030 is a polyether polyol, the polyether polyol B is a poly POP3628 ether polyols, the polyether polyol C PPG3000 polypropylene glycol polyether polyols.
  5. 5.根据权利要求1或2所述的一种超薄聚氨酯材料的制备方法,其特征在于:所述异氰酸酯为二苯基甲烷二异氰酸酯,所述稳定剂为二甲基聚硅氧烷和聚醚的嵌段共聚物,所述催化剂为三亚乙基二胺、二月桂酸二丁基锡或辛酸亚锡,所述水为离子交换水或蒸馏水。 The method of preparing an ultra-thin polyurethane or material according to claim 12, wherein: said isocyanate is diphenylmethane diisocyanate, the stabilizer is dimethyl polysiloxane and ether block copolymer, the catalyst is triethylenediamine, dibutyl tin dilaurate or stannous octoate, the water is ion exchanged water or distilled water.
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US5231159A (en) * 1990-12-27 1993-07-27 The Gates Rubber Company High temperature resistant molded elastomer
CN101250253A (en) * 2008-04-01 2008-08-27 江苏德翔聚氨酯塑胶有限公司 Formula of cold curing foam and forming technique
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CN102250311A (en) * 2011-02-11 2011-11-23 江苏恒康家居科技有限公司 Non-temperature sensitive memory sponge for flat-foam foaming process in MDI system
CN102504175A (en) * 2011-11-04 2012-06-20 北京科聚化工新材料有限公司 Preparation method for low-density viscoelastic polyurethane foam
CN104774304A (en) * 2015-04-30 2015-07-15 孟繁勤 Environment-friendly high-buffering-property polyurethane packaging material
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5231159A (en) * 1990-12-27 1993-07-27 The Gates Rubber Company High temperature resistant molded elastomer
CN101250253A (en) * 2008-04-01 2008-08-27 江苏德翔聚氨酯塑胶有限公司 Formula of cold curing foam and forming technique
CN101914282A (en) * 2010-08-18 2010-12-15 漳州华德高分子应用材料科技有限公司 Natural plant oil based hydrophile low-resilience foam and preparation method thereof
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