CN116675830A - 一种缓冲吸能材料 - Google Patents
一种缓冲吸能材料 Download PDFInfo
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- CN116675830A CN116675830A CN202310448128.3A CN202310448128A CN116675830A CN 116675830 A CN116675830 A CN 116675830A CN 202310448128 A CN202310448128 A CN 202310448128A CN 116675830 A CN116675830 A CN 116675830A
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- parts
- absorbing material
- energy
- energy absorbing
- nano alumina
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- 239000011358 absorbing material Substances 0.000 title claims abstract description 45
- 230000003139 buffering effect Effects 0.000 title claims abstract description 29
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 47
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000945 filler Substances 0.000 claims abstract description 40
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000007822 coupling agent Substances 0.000 claims abstract description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 25
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 20
- 229920005862 polyol Polymers 0.000 claims description 17
- 150000003077 polyols Chemical class 0.000 claims description 17
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 14
- 239000004970 Chain extender Substances 0.000 claims description 13
- 239000003054 catalyst Substances 0.000 claims description 13
- 125000005442 diisocyanate group Chemical group 0.000 claims description 13
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 11
- 239000004088 foaming agent Substances 0.000 claims description 11
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 10
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 10
- 229920005906 polyester polyol Polymers 0.000 claims description 10
- 229920000570 polyether Polymers 0.000 claims description 10
- 229920001451 polypropylene glycol Polymers 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 8
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 5
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 5
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 4
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 4
- SVYKKECYCPFKGB-UHFFFAOYSA-N N,N-dimethylcyclohexylamine Chemical compound CN(C)C1CCCCC1 SVYKKECYCPFKGB-UHFFFAOYSA-N 0.000 claims description 4
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 4
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 4
- ZQCIMPBZCZUDJM-UHFFFAOYSA-N 2-octoxyethanol Chemical compound CCCCCCCCOCCO ZQCIMPBZCZUDJM-UHFFFAOYSA-N 0.000 claims description 3
- 150000002009 diols Chemical class 0.000 claims description 3
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 claims description 3
- -1 polyoxypropylene Polymers 0.000 claims description 3
- 239000004604 Blowing Agent Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000005187 foaming Methods 0.000 abstract description 5
- 125000003277 amino group Chemical group 0.000 abstract description 4
- 239000012948 isocyanate Substances 0.000 abstract description 4
- 150000002513 isocyanates Chemical class 0.000 abstract description 4
- 239000000377 silicon dioxide Substances 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 22
- 239000000872 buffer Substances 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical group CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 2
- 239000006173 Good's buffer Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
本发明公开了一种缓冲吸能材料,按重量份算,包括以下制备原料:多元醇、二异氰酸酯、发泡剂、催化剂、醇醚溶剂、改性填料、扩链剂,通过改性填料的加入,使缓冲吸能材料具有良好的缓冲性能,改性填料首先通过二氧化硅进行包覆纳米氧化铝,使纳米氧化铝表面进行进行改性,提高纳米氧化铝的粗糙度,增大其比表面积,同时进行偶联剂水解改性并添加二氧化钛,形成二氧化钛‑纳米氧化铝相互交织的结构,其表面带有氨基基团,与异氰酸酯反应的程度更高,改性后的纳米氧化铝由于其比表面积更大,所形成的网状结构更广,提高发泡反应程度,提高缓冲吸能材料的缓冲性能,从而提高吸能效果,满足吸能盒应用所需的吸能需求。
Description
技术领域
本发明涉及聚氨酯发泡领域,具体而言,涉及一种缓冲吸能材料。
背景技术
吸能盒是装配于前保险杠处并用于吸收碰撞所带来能量的组件,其包括外框体以及设置于外框体内部的吸能材料,现有技术中选用发泡铝为吸能材料或通过改进外框体结构以提高吸能效果,而发泡铝需要通过热熔、吹气等步骤进行制备,其制备方法较为繁琐,同时所制备的发泡铝在使用过程中,通过其形变进行吸能,其形变而达到的吸能效果欠佳,不能满足吸能盒应用所需的吸能需求。
综上所述,经过申请人的海量检索,本领域至少存在现有技术中吸能盒中的吸能材料的吸能效果欠佳,不能满足吸能盒应用所需的吸能需求,因此,需要开发或者改进一种缓冲吸能材料。
发明内容
基于此,为了解决吸能盒中的吸能材料的吸能效果欠佳,不能满足吸能盒应用所需的吸能需求的问题,本发明提供了一种缓冲吸能材料,具体技术方案如下:
一种缓冲吸能材料,按重量份算,包括以下制备原料:多元醇13份-18份、二异氰酸酯18份-22份、发泡剂1份-2份、催化剂6份-10份、醇醚溶剂32份-38份、改性填料8份-12份、扩链剂8份-12份。
进一步地,按重量份算,包括以下制备原料:多元醇15份、二异氰酸酯20份、发泡剂2份、催化剂8份、醇醚溶剂35份、改性填料10份、扩链剂10份。
进一步地,所述多元醇包括聚氧化丙烯二醇、聚醚三醇、聚酯多元醇中的一种或多种混合。
进一步地,所述二异氰酸酯包括甲苯二异氰酸酯、六亚甲基二异氰酸酯中的一种或两种混合。
进一步地,所述发泡剂包括二氯甲烷。
进一步地,所述催化剂包括N,N-二甲基环己胺、三乙胺中的一种或两种混合。
进一步地,所述醇醚溶剂包括二甘醇单丁醚、乙二醇单辛醚、乙二醇单丁醚中的一种或多种混合。
进一步地,所述改性填料包括以下步骤制成:
改性纳米氧化铝制备:
于55℃条件下,搅拌混合水、乙醇、正丁醇、氨水、纳米氧化铝、聚乙烯吡咯烷酮以及正硅酸乙酯,搅拌时长为1h,得到预混物;
改性填料制备:
搅拌混合甲苯、二氧化钛、偶联剂、三乙胺、去离子水,并调节PH至7-8,于40℃条件下搅拌混合2h,并加入预混物继续在40℃条件下搅拌混合2h,搅拌混合完毕进行烘干,得到改性填料。
进一步地,所述扩链剂包括1,4-丁二醇、1,6-己二醇中的一种或两种混合。
进一步地,所述多元醇由聚氧化丙烯二醇、聚醚三醇、聚酯多元醇按质量比2:2:1混合而成。
上述技术方案中,缓冲吸能材料按重量份算,包括以下制备原料:多元醇13份-18份、二异氰酸酯18份-22份、发泡剂1份-2份、催化剂6份-10份、醇醚溶剂32份-38份、改性填料8份-12份、扩链剂8份-12份,通过改性填料的加入,使缓冲吸能材料具有良好的缓冲性能,改性填料首先通过二氧化硅进行包覆纳米氧化铝,使纳米氧化铝表面进行进行改性,提高纳米氧化铝的粗糙度,增大其比表面积,同时进行偶联剂水解改性并添加二氧化钛,形成二氧化钛-纳米氧化铝相互交织的结构,其表面带有氨基基团,与异氰酸酯反应的程度更高,改性后的纳米氧化铝由于其比表面积更大,所形成的网状结构更广,提高发泡反应程度,提高缓冲吸能材料的缓冲性能,从而提高吸能效果,满足吸能盒应用所需的吸能需求。
具体实施方式
为了使得本发明的目的、技术方案及优点更加清楚明白,以下结合其实施例,对本发明进行进一步详细说明。应当理解的是,此处所描述的具体实施方式仅用以解释本发明,并不限定本发明的保护范围。
除非另有定义,本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的,不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
本发明一实施例中的一种缓冲吸能材料,按重量份算,包括以下制备原料:多元醇13份-18份、二异氰酸酯18份-22份、发泡剂1份-2份、催化剂6份-10份、醇醚溶剂32份-38份、改性填料8份-12份、扩链剂8份-12份。
在其中一个实施例中,按重量份算,包括以下制备原料:多元醇15份、二异氰酸酯20份、发泡剂2份、催化剂8份、醇醚溶剂35份、改性填料10份、扩链剂10份。
在其中一个实施例中,所述多元醇包括聚氧化丙烯二醇、聚醚三醇、聚酯多元醇中的一种或多种混合。
在其中一个实施例中,所述二异氰酸酯包括甲苯二异氰酸酯、六亚甲基二异氰酸酯中的一种或两种混合。
在其中一个实施例中,所述发泡剂包括二氯甲烷。
在其中一个实施例中,所述催化剂包括N,N-二甲基环己胺、三乙胺中的一种或两种混合。
在其中一个实施例中,所述醇醚溶剂包括二甘醇单丁醚、乙二醇单辛醚、乙二醇单丁醚中的一种或多种混合。
在其中一个实施例中,所述改性填料包括以下步骤制成:
改性纳米氧化铝制备:
于55℃条件下,搅拌混合水、乙醇、正丁醇、氨水、纳米氧化铝、聚乙烯吡咯烷酮以及正硅酸乙酯,搅拌时长为1h,得到预混物;
改性填料制备:
搅拌混合甲苯、二氧化钛、偶联剂、三乙胺、去离子水,并调节PH至7-8,于40℃条件下搅拌混合2h,并加入预混物继续在40℃条件下搅拌混合2h,搅拌混合完毕进行烘干,得到改性填料。
在其中一个实施例中,所述扩链剂包括1,4-丁二醇、1,6-己二醇中的一种或两种混合。
在其中一个实施例中,所述多元醇由聚氧化丙烯二醇、聚醚三醇、聚酯多元醇按质量比2:2:1混合而成。
所述多元醇由聚氧化丙烯二醇、聚醚三醇、聚酯多元醇按质量比2:2:1混合而成,所述聚氧化丙烯二醇的分子量为2000;所述聚醚三醇的平均相对分子量为1500,羟值为112(mgKOH/g),不饱和度为0.02mmol/g,粘度为(25℃)290mPa·s;聚酯多元醇具体为bayerDesmophen 1800,相对分子质量2800,酸值≤1.2,羟值60,黏度为(73℃)900-1600mPa·s。
在其中一个实施例中,所述纳米氧化铝具体为4N高纯纳米氧化铝,VK-L30M,外观为白色粉末,晶型为混晶,粒径为30nm,含量为99.99%,比表面积为100-110m2/g。
在其中一个实施例中,按重量份算,所述改性填料的制备原料包括以下配比制成,水20份:乙醇25份:正丁醇25份:氨水2份:纳米氧化铝12份:聚乙烯吡咯烷酮2份:正硅酸乙酯15份:甲苯45份:二氧化钛20份:偶联剂5份:三乙胺2份:去离子水27份。
在其中一个实施例中,所述偶联剂为γ-氨丙基三乙氧基硅烷。
缓冲吸能材料按重量份算,包括以下制备原料:多元醇13份-18份、二异氰酸酯18份-22份、发泡剂1份-2份、催化剂6份-10份、醇醚溶剂32份-38份、改性填料8份-12份、扩链剂8份-12份,通过改性填料的加入,使缓冲吸能材料具有良好的缓冲性能,改性填料首先通过二氧化硅进行包覆纳米氧化铝,使纳米氧化铝表面进行进行改性,提高纳米氧化铝的粗糙度,增大其比表面积,同时进行偶联剂水解改性并添加二氧化钛,形成二氧化钛-纳米氧化铝相互交织的结构,其表面带有氨基基团,与异氰酸酯反应的程度更高,改性后的纳米氧化铝由于其比表面积更大,所形成的网状结构更广,通过提高发泡反应程度,提高缓冲吸能材料的缓冲性能,从而提高吸能效果,满足吸能盒应用所需的吸能需求。
下面将结合具体实施例对本发明的实施方案进行详细描述。
实施例1-4与对比例1的区别在于原料的添加量不同,制备工艺相同,具体如表1所示。
表1:
所述多元醇由质量比2:2:1的聚氧化丙烯二醇、聚醚三醇、聚酯多元醇混合而成,所述聚氧化丙烯二醇的分子量为2000;所述聚醚三醇的平均相对分子量为1500,羟值为112(mgKOH/g),不饱和度为0.02mmol/g,粘度为(25℃)290mPa·s;聚酯多元醇具体为BayerDesmophen 1800,相对分子质量2800,酸值≤1.2,羟值60,黏度为(73℃)900-1600mPa·s;所述二异氰酸酯为质量比1:1的甲苯二异氰酸酯、六亚甲基二异氰酸酯混合而成;所述发泡剂为二氯甲烷;所述催化剂为N,N-二甲基环己胺;所述醇醚溶剂为质量比2:2:1的二甘醇单丁醚、乙二醇单辛醚、乙二醇单丁醚混合而成;所述扩链剂为1,4-丁二醇。
一种缓冲吸能材料的制备方法,包括以下步骤,
制备改性填料:
改性纳米氧化铝制备,
于55℃条件下,搅拌混合20份水、25份乙醇、25份正丁醇、2份氨水、12份纳米氧化铝、2份聚乙烯吡咯烷酮以及15份正硅酸乙酯,搅拌时长为1h,得到预混物;
改性填料制备,
搅拌混合45份甲苯、20份二氧化钛、5份偶联剂、2份三乙胺、27份去离子水,并调节PH至7-8,于40℃条件下搅拌混合2h,并加入预混物继续在40℃条件下搅拌混合2h,搅拌混合完毕进行烘干,得到改性填料。
所述纳米氧化铝具体为4N高纯纳米氧化铝,VK-L30M,外观为白色粉末,晶型为混晶,粒径为30nm,含量为99.99%,比表面积为100-110m2/g。
所述偶联剂为γ-氨丙基三乙氧基硅烷。
制备缓冲吸能材料:
将多元醇、二异氰酸酯、发泡剂、催化剂、醇醚溶剂、改性填料、扩链剂搅拌混合发泡,并转移至吸能盒外框体的内部进行熟化定型,在55℃的条件下熟化定型48h。
对比例2-4与实施例1的区别在于改性填料的制备原料的添加量不同,其他相关制备工艺相同,具体如表2所示。
表2:
对实施例1-4以及对比例1-4所制备的缓冲吸能材料进行相关性能测试,结果如表3所示。其中评价永久形变测试依照ASTM D395-B法,将试样在厚度方向上压缩50%,放到70℃、湿度为50%的条件下,保持22小时,然后在常温下释放压缩应力30分钟后,测试其厚度,并按照以下公式计算其永久形变率。永久形变率=(试样原始的厚度-压缩处理后的厚度)/原始的厚度*100%;缓冲性能检测为采用EN1621-2标准的测试方法以及设备,试样材料采用13mm厚度,长宽尺寸在35*25cm。测试条件为23±2℃,湿度60%。其中表述缓冲性能的指标值-冲击率峰值的解释为:当一个重物约5KG从一定高度掉落在试样材料上,产生50KN的冲击能量,通过该试样材料的缓冲减震后,在试样下方的电子感应器接收到的冲击力量,我们称之为冲击力峰值,单位为N。该值越小,表示材料的缓冲吸能效果越好。
表3:
由表3的数据可知,实施例1-4所制备的缓冲吸能材料具有良好的缓冲吸能效果,可满足吸能盒应用所需的吸能需求。对比例1与实施例1的区别在于对比例1所制备的缓冲吸能材料的制备原料未添加改性填料,由表3的数据可知,对比例1所制备的缓冲吸能材料的永久变形率以及冲击力峰值与实施例1相比,对比例1的数值较高,由此可见未添加改性填料的缓冲吸能材料未能拥有良好的缓冲吸能效果,未能满足吸能盒应用所需的吸需求;添加改性添加可有效提高缓冲吸能材料的缓冲吸能效果,有效降低碰撞过程中所带来的冲击力;
对比例2与实施例1的区别在于,对比例2的改性填料的制备原料未添加纳米氧化铝以及对纳米氧化铝进行改性的物料,由表3的数据可知,对比例2所制备的缓冲吸能材料的永久变形率以及冲击力峰值与实施例1相比,对比例2的数值较高,但与对比例1相比对比例2的数值相对较低,由此可见,通过偶联剂改性后的二氧化钛为提高缓冲吸能材料的缓冲吸能性能具有正向作用,但与改性填料制备中的纳米氧化铝以及二氧化钛搭配相比仍有差距;
对比例3与实施例1的区别在于,对比例3的改性填料的制备原料未添加二氧化钛以及对二氧化钛进行改性的物料,由表3的数据可知,对比例3所制备的缓冲吸能材料的永久变形率以及冲击力峰值与实施例1相比,对比例3的数值较高,但与对比例1相比,对比例3的数值相对较低,由此可见,通过正硅酸乙酯进行改性后的纳米氧化铝为提高缓冲吸能材料的缓冲吸能性能具有正向作用,但与改性填料制备中的纳米氧化铝以及二氧化钛搭配相比仍有差距;
对比例4与实施例1的区别在于,对比例4仅使用纳米氧化铝、二氧化钛以及体系溶剂,不对填料进行改性,由表3的数据可知,对比例4所制备的缓冲吸能材料的永久变形率以及冲击率峰值与实施例1相比,对比例4的数据升高较多,并与对比例1相比对比例3的数据亦较高,由此可见未进行改性的填料对缓冲吸能材料的缓冲吸能性能具有反向作用;对填料进行改性可有效提高所制备的缓冲吸能材料的缓冲性能,提高吸能效果;
由此可见,改性填料的纳米氧化铝以及二氧化钛的搭配中,改性填料首先通过二氧化硅进行包覆纳米氧化铝,使纳米氧化铝表面进行进行改性,提高纳米氧化铝的粗糙度,增大其比表面积,同时进行偶联剂水解改性并添加二氧化钛,形成二氧化钛-纳米氧化铝相互交织的结构,其表面带有氨基基团,与异氰酸酯反应的程度更高,改性后的纳米氧化铝由于其比表面积更大,所形成的网状结构更广,增大发泡反应程度,提高缓冲吸能材料的缓冲性能,提高吸能效果,满足吸能盒应用所需的吸能需求。
以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
Claims (10)
1.一种缓冲吸能材料,其特征在于,按重量份算,包括以下制备原料:多元醇13份-18份、二异氰酸酯18份-22份、发泡剂1份-2份、催化剂6份-10份、醇醚溶剂32份-38份、改性填料8份-12份、扩链剂8份-12份。
2.根据权利要求1所述的缓冲吸能材料,其特征在于,按重量份算,包括以下制备原料:多元醇15份、二异氰酸酯20份、发泡剂2份、催化剂8份、醇醚溶剂35份、改性填料10份、扩链剂10份。
3.根据权利要求1或2所述的缓冲吸能材料,其特征在于,所述多元醇包括聚氧化丙烯二醇、聚醚三醇、聚酯多元醇中的一种或多种混合。
4.根据权利要求1或2所述的缓冲吸能材料,其特征在于,所述二异氰酸酯包括甲苯二异氰酸酯、六亚甲基二异氰酸酯中的一种或两种混合。
5.根据权利要求1或2所述的缓冲吸能材料,其特征在于,所述发泡剂包括二氯甲烷。
6.根据权利要求1或2所述的缓冲吸能材料,其特征在于,所述催化剂包括N,N-二甲基环己胺、三乙胺中的一种或两种混合。
7.根据权利要求1或2所述的缓冲吸能材料,其特征在于,所述醇醚溶剂包括二甘醇单丁醚、乙二醇单辛醚、乙二醇单丁醚中的一种或多种混合。
8.根据权利要求1或2所述的缓冲吸能材料,其特征在于,所述改性填料包括以下步骤制成:
改性纳米氧化铝制备:
于55℃条件下,搅拌混合水、乙醇、正丁醇、氨水、纳米氧化铝、聚乙烯吡咯烷酮以及正硅酸乙酯,搅拌时长为1h,得到预混物;
改性填料制备:
搅拌混合甲苯、二氧化钛、偶联剂、三乙胺、去离子水,并调节PH至7-8,于40℃条件下搅拌混合2h,并加入预混物继续在40℃条件下搅拌混合2h,搅拌混合完毕进行烘干,得到改性填料。
9.根据权利要求1或2所述的缓冲吸能材料,其特征在于,所述扩链剂包括1,4-丁二醇、1,6-己二醇中的一种或两种混合。
10.根据权利要求3所述的缓冲吸能材料,其特征在于,所述多元醇由聚氧化丙烯二醇、聚醚三醇、聚酯多元醇按质量比2:2:1混合而成。
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