CN108892925A - A kind of anti-lightning strike composite material surface film and its preparation method and application - Google Patents
A kind of anti-lightning strike composite material surface film and its preparation method and application Download PDFInfo
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- 239000011347 resin Substances 0.000 claims abstract description 29
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 26
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- 238000003756 stirring Methods 0.000 claims description 8
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- SJPFBRJHYRBAGV-UHFFFAOYSA-N n-[[3-[[bis(oxiran-2-ylmethyl)amino]methyl]phenyl]methyl]-1-(oxiran-2-yl)-n-(oxiran-2-ylmethyl)methanamine Chemical group C1OC1CN(CC=1C=C(CN(CC2OC2)CC2OC2)C=CC=1)CC1CO1 SJPFBRJHYRBAGV-UHFFFAOYSA-N 0.000 description 2
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- HBGPNLPABVUVKZ-POTXQNELSA-N (1r,3as,4s,5ar,5br,7r,7ar,11ar,11br,13as,13br)-4,7-dihydroxy-3a,5a,5b,8,8,11a-hexamethyl-1-prop-1-en-2-yl-2,3,4,5,6,7,7a,10,11,11b,12,13,13a,13b-tetradecahydro-1h-cyclopenta[a]chrysen-9-one Chemical compound C([C@@]12C)CC(=O)C(C)(C)[C@@H]1[C@H](O)C[C@]([C@]1(C)C[C@@H]3O)(C)[C@@H]2CC[C@H]1[C@@H]1[C@]3(C)CC[C@H]1C(=C)C HBGPNLPABVUVKZ-POTXQNELSA-N 0.000 description 1
- PFRGGOIBYLYVKM-UHFFFAOYSA-N 15alpha-hydroxylup-20(29)-en-3-one Natural products CC(=C)C1CCC2(C)CC(O)C3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 PFRGGOIBYLYVKM-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical group C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
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- SOKRNBGSNZXYIO-UHFFFAOYSA-N Resinone Natural products CC(=C)C1CCC2(C)C(O)CC3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 SOKRNBGSNZXYIO-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 239000010453 quartz Substances 0.000 description 1
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- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical group CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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- C08J5/18—Manufacture of films or sheets
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- C08J2483/16—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers in which all the silicon atoms are connected by linkages other than oxygen atoms
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Abstract
Description
技术领域technical field
本发明涉及一种航空航天防雷击复合材料表面膜及其制备方法和应用。The invention relates to an aerospace lightning protection composite material surface film and a preparation method and application thereof.
背景技术Background technique
由于减重需求，航空航天领域大量采用复合材料替代金属作为飞行器主体材料，复合材料具有优异的比强度等优点，由于复合材料导电性能较金属差，遇到雷击后很难将高能量电流传导出去，必然导致大能量的积聚，造成复合材料的破坏或内部仪器的损伤失效。目前，复合材料防雷击保护主要有采用分流条形式、铺附金属网方式或火焰喷涂铝的方式，以上形式存在电磁屏蔽性能差、工艺复杂或增重大等问题。Due to the demand for weight reduction, a large number of composite materials are used in the aerospace field to replace metals as the main material of the aircraft. Composite materials have excellent specific strength and other advantages. Because composite materials have poorer electrical conductivity than metals, it is difficult to conduct high-energy currents after lightning strikes. , will inevitably lead to the accumulation of large energy, resulting in damage to composite materials or damage to internal instruments. At present, the lightning protection of composite materials mainly adopts the form of shunt strips, the method of laying metal mesh, or the method of flame spraying aluminum. The above forms have problems such as poor electromagnetic shielding performance, complicated process or increased weight.
发明内容Contents of the invention
本发明是针对复合材料提出一种防雷击复合材料表面膜的制备方法和应用。The invention proposes a preparation method and application of a lightning protection composite material surface film aiming at composite materials.
本发明采用碳纳米管、石墨烯等非金属导电材料配合金属银薄片，作为导电主体材料，采用超声分散技术，使填料均匀分散于树脂基体中，在高温、高压下碳纳米管或石墨烯等填料再次定向排布，与预浸料共固化成型，对飞机部件起到雷击防护和电磁屏蔽作用。The present invention uses carbon nanotubes, graphene and other non-metallic conductive materials combined with metal silver flakes as the conductive main material, and adopts ultrasonic dispersion technology to uniformly disperse the filler in the resin matrix. Carbon nanotubes or graphene, etc. The fillers are oriented again and co-cured with the prepreg to form lightning strike protection and electromagnetic shielding for aircraft components.
本发明的一种防雷击复合材料表面膜，它按照重量份数是由75～100份的环氧树脂、 25～60份微米银薄片、2～10份的碳纳米材料、10～15份的增韧改性剂、10～20份耐热改性剂、10～30份的固化剂、1～5份UV稳定剂和载体组成。A kind of anti-lightning composite material surface film of the present invention, it is by the epoxy resin of 75～100 parts, the carbon nano material of 2～10 parts, 10～15 parts by weight according to the epoxy resin of 25～60 parts The toughening modifier, 10-20 parts of heat-resistant modifier, 10-30 parts of curing agent, 1-5 parts of UV stabilizer and carrier.
本发明的一种防雷击复合材料表面膜的制备方法按照以下步骤进行：The preparation method of a kind of anti-lightning strike composite surface film of the present invention is carried out according to the following steps:
一、按质量份数称取75～100份的环氧树脂、25～40份的微米银薄片、2～10份碳纳米材料、10～15份增韧改性剂、10～20份耐热改性剂、10～30份的固化剂和1～5份UV稳定剂；1. Weigh 75-100 parts of epoxy resin, 25-40 parts of micron silver flakes, 2-10 parts of carbon nanomaterials, 10-15 parts of toughening modifier, 10-20 parts of heat-resistant Modifier, 10-30 parts of curing agent and 1-5 parts of UV stabilizer;
二、将步骤一称取的环氧树脂在高速分散机中加热到150～170℃，步骤一中称取的碳纳米材料加入到高速分散机中搅拌60～120min，得到共混树脂；2. Heat the epoxy resin weighed in step 1 to 150-170°C in a high-speed disperser, add the carbon nanomaterials weighed in step 1 into the high-speed disperser and stir for 60-120 minutes to obtain a blended resin;
三、将步骤二中共混树脂加热至160～180℃，在超声波分散机中进一步分散；3. Heat the blended resin in step 2 to 160-180°C, and further disperse in an ultrasonic disperser;
四、将步骤三中的共混树脂与步骤一中称取的微米银薄片在三辊研磨机中研磨3遍，再与步骤一中称取的增韧改性剂、耐热改性剂、固化剂、UV稳定剂加入到捏合机中， 120～140℃下捏合30～60min，再抽真空10～30min；Four, the blended resin in step 3 and the micron silver flakes weighed in step 1 are ground 3 times in a three-roll mill, and then with the toughening modifier, heat-resistant modifier, Add curing agent and UV stabilizer to the kneader, knead at 120-140°C for 30-60 minutes, and then vacuumize for 10-30 minutes;
五、将步骤四中的树脂在载体辅助下采用热熔压膜机上成膜，成膜温度为80～100℃。5. The resin in step 4 is assisted by a carrier to form a film on a hot-melt film laminator, and the film-forming temperature is 80-100°C.
本发明的防雷击复合材料表面膜用于制备防雷击复合材料板。The anti-lightning composite material surface film of the invention is used for preparing anti-lightning composite material boards.
本发明的一种防雷击复合材料表面膜优点如下：A kind of anti-lightning strike composite material surface film advantage of the present invention is as follows:
1、本发明采用了碳纳米管和石墨烯配合微米银薄片作为表面膜导电材料，与传统的银薄片作为导电材料相比，降低了银薄片的加入量，单位电阻值仍保持较低水平，减轻了表面膜重量。1. The present invention uses carbon nanotubes and graphene with micron silver flakes as the surface film conductive material. Compared with traditional silver flakes as conductive materials, the addition of silver flakes is reduced, and the unit resistance value is still kept at a low level. Reduced surface film weight.
2、本发明增韧剂采用聚酰亚胺和聚酰胺酰亚胺纳米粉末联合增韧环氧树脂，双重增韧效果优于单一方式。2. The toughening agent of the present invention adopts polyimide and polyamideimide nano powder to jointly toughen epoxy resin, and the double toughening effect is better than that of a single way.
3、耐热改性剂由含硅芳炔树脂和间卡十硼烷-苯并咪唑中的一种或两种按任意比组成。这两种耐热改性剂对环氧树脂耐热性改性效果明显，配合使用兼顾耐热性和经济性。3. The heat-resistant modifier is composed of one or two of silicon-containing aryne resin and m-cardecaborane-benzimidazole in any ratio. These two heat-resistant modifiers have obvious effects on the heat-resistant modification of epoxy resin, and they are used together to take into account heat resistance and economy.
本发明表面膜的耐热性得到了意想不到的提高，提高幅度高达40％。The heat resistance of the surface film of the invention is improved unexpectedly, and the improvement rate is as high as 40%.
附图说明Description of drawings
图1为本发明防雷击复合材料表面膜制备各阶段结构状态示意图。Fig. 1 is a schematic diagram of the structural state of each stage of preparation of the surface film of the lightning protection composite material of the present invention.
具体实施方式Detailed ways
本发明技术方案不局限于以下所列举具体实施方式，还包括各具体实施方式间的任意组合。The technical solution of the present invention is not limited to the specific embodiments listed below, but also includes any combination of the specific embodiments.
具体实施方式一：本发明的一种防雷击复合材料表面膜，它按照重量份数是由75～100 份的环氧树脂、25～60份银薄片、2～10份的碳纳米材料、10～15份的增韧改性剂、10～20 份耐热改性剂、10～30份的固化剂、1～5份UV稳定剂和载体组成。Specific embodiment one: a kind of anti-lightning strike composite material surface film of the present invention, it is by the epoxy resin of 75～100 parts, 25～60 parts of silver flakes, the carbon nano material of 2～10 parts, 10-15 parts of toughening modifier, 10-20 parts of heat-resistant modifier, 10-30 parts of curing agent, 1-5 parts of UV stabilizer and carrier.
具体实施方式二：本实施方式与具体实施方式一不同的是：环氧树脂是由N,N,N',N'- 四(环氧乙烷基甲基)-1,3-苯二甲胺、萘基酚醛环氧树脂中的一种或其中两种按任意比例组成。其它与具体实施方式一相同。Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the epoxy resin is made of N,N,N',N'-tetrakis(oxiranylmethyl)-1,3-xylylene amine , naphthyl novolac epoxy resin One or two of them in any proportion. Others are the same as in the first embodiment.
具体实施方式三：本实施方式与具体实施方式一或二不同的是：微米银薄片尺寸为 5～15μm。其它与具体实施方式一或二相同。Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the size of the micron silver flakes is 5-15 μm. Others are the same as in the first or second embodiment.
具体实施方式四：本实施方式与具体实施方式一至三之一不同的是：碳纳米材料由石墨烯、碳纳米管或导电炭黑中的一种或几种按任意比组成。其它与具体实施方式一至三之一相同。Embodiment 4: This embodiment differs from Embodiments 1 to 3 in that the carbon nanomaterial is composed of one or more of graphene, carbon nanotubes or conductive carbon black in any ratio. Others are the same as those in the first to third specific embodiments.
具体实施方式五：本实施方式与具体实施方式一至四不同的是：增韧剂由聚酰亚胺和聚酰胺酰亚胺按3:2比例组成。Embodiment 5: This embodiment is different from Embodiments 1 to 4 in that: the toughening agent is composed of polyimide and polyamideimide in a ratio of 3:2.
聚酰亚胺结构式：其中R为甲苯二异氰酸酯或二苯基甲烷二异氰酸酯。Polyimide structural formula: Wherein R is toluene diisocyanate or diphenylmethane diisocyanate.
聚酰胺酰亚胺结构式：其中：R为或 Polyamideimide structural formula: Where: R is or
具体实施方式六：本实施方式与具体实施方式一至五不同的是：耐热改性剂由含硅芳炔树脂和间卡十硼烷-苯并咪唑中的一种或两种按任意比组成。这两种耐热改性剂对热固性树脂表面膜耐热性改性效果最佳，配合使用兼顾耐热性和经济性。其它与具体实施方式一至五之一相同。Embodiment 6: This embodiment differs from Embodiments 1 to 5 in that the heat-resistant modifier is composed of one or both of silicon-containing aryne resin and m-cardecaborane-benzimidazole in any ratio . These two heat-resistant modifiers have the best effect on the heat-resistant modification of the thermosetting resin surface film, and the combined use takes into account heat resistance and economy. Others are the same as one of the specific embodiments 1 to 5.
含硅芳炔树脂结构式：间卡十硼烷-苯并咪唑结构式： Structural formula of silicon-containing aryne resin: m-Cardecaborane-benzimidazole structural formula:
具体实施方式七：本实施方式与具体实施方式一至六之一不同的是：固化剂为4,4'- 二氨基二苯砜。其它与具体实施方式一至六之一相同。Embodiment 7: This embodiment is different from Embodiment 1 to Embodiment 6 in that the curing agent is 4,4'-diaminodiphenyl sulfone. Others are the same as one of the specific embodiments 1 to 6.
具体实施方式八：本实施方式与具体实施方式一至七之一不同的是：UV稳定剂是由金红石型纳米钛白粉、纳米氧化锌、2-羟基-4-甲氧基二苯甲酮、2-羟基-4-正辛氧基二苯甲酮中的一种或几种按任意比组成。其它与具体实施方式一至七之一相同。Embodiment 8: This embodiment is different from one of Embodiments 1 to 7 in that the UV stabilizer is made of rutile nano-titanium dioxide, nano-zinc oxide, 2-hydroxyl-4-methoxybenzophenone, 2 One or more of -hydroxyl-4-n-octyloxybenzophenones are composed in any ratio. Others are the same as one of the specific embodiments 1 to 7.
具体实施方式九：本实施方式与具体实施方式一至八之一不同的是：载体为聚酯无纺布、芳纶纤维无纺布、玻璃纤维无纺布、石英纤维无纺布中的一种。其它与具体实施方式一至八之一相同。Specific embodiment nine: the difference between this embodiment and one of the specific embodiments one to eight is that the carrier is one of polyester non-woven fabric, aramid fiber non-woven fabric, glass fiber non-woven fabric, and quartz fiber non-woven fabric . Others are the same as one of the specific embodiments 1 to 8.
具体实施方式十：本实施方式的一种防雷击复合材料表面膜的制备方法按照以下步骤进行：Embodiment 10: The preparation method of a lightning protection composite material surface film in this embodiment is carried out according to the following steps:
一、按质量份数称取75～100份的环氧树脂、25～40份的微米银薄片、2～10份碳纳米材料、10～15份增韧改性剂、10～20份耐热改性剂、10～30份的固化剂和1～5份UV稳定剂；1. Weigh 75-100 parts of epoxy resin, 25-40 parts of micron silver flakes, 2-10 parts of carbon nanomaterials, 10-15 parts of toughening modifier, 10-20 parts of heat-resistant Modifier, 10-30 parts of curing agent and 1-5 parts of UV stabilizer;
二、将步骤一称取的环氧树脂在高速分散机中加热到150～170℃，步骤一中称取的碳纳米材料加入到高速分散机中搅拌60～120min，得到共混树脂；2. Heat the epoxy resin weighed in step 1 to 150-170°C in a high-speed disperser, add the carbon nanomaterials weighed in step 1 into the high-speed disperser and stir for 60-120 minutes to obtain a blended resin;
三、将步骤二中共混树脂加热至160～180℃，在超声波分散机中进一步分散；3. Heat the blended resin in step 2 to 160-180°C, and further disperse in an ultrasonic disperser;
四、将步骤三中的共混树脂与步骤一中称取的微米银薄片在三辊研磨机中研磨3遍，再与步骤一中称取的增韧改性剂、耐热改性剂、固化剂、UV稳定剂加入到捏合机中， 120～140℃下捏合30～60min，再抽真空10～30min；Four, the blended resin in step 3 and the micron silver flakes weighed in step 1 are ground 3 times in a three-roll mill, and then with the toughening modifier, heat-resistant modifier, Add curing agent and UV stabilizer to the kneader, knead at 120-140°C for 30-60 minutes, and then vacuumize for 10-30 minutes;
五、将步骤四中的树脂在载体辅助下采用热熔压膜机上成膜，成膜温度为80～100℃。5. The resin in step 4 is assisted by a carrier to form a film on a hot-melt film laminator, and the film-forming temperature is 80-100°C.
具体实施方式十一：本实施方式的防雷击复合材料表面膜用于制备它用于制备防雷击复合材料板。Embodiment 11: The surface film of the lightning strike-proof composite material in this embodiment is used to prepare it for the preparation of the lightning strike-proof composite material board.
具体实施方式十二：本实施方式与具体实施方式十一不同的是：防雷击复合材料板制备方法如下：Embodiment 12: The difference between this embodiment and Embodiment 11 is that the preparation method of the anti-lightning composite board is as follows:
将防雷击复合材料表面膜平整铺附于预浸料外表面，在热压罐180～200℃、 0.4～0.6MPa下进行共固化，得防雷击复合材料。The surface film of the anti-lightning composite material is evenly laid on the outer surface of the prepreg, and co-cured in an autoclave at 180-200°C and 0.4-0.6MPa to obtain the anti-lightning composite material.
其它与具体实施方式十一相同。Others are the same as in the eleventh embodiment.
本实施方式所述的高速搅拌机搅拌速度不低于1500r/min。The stirring speed of the high-speed mixer described in this embodiment is not lower than 1500 r/min.
通过以下试验验证本发明的有益效果：Prove the beneficial effect of the present invention by following test:
试验1、本试验一种防雷击复合材料表面膜的制备方法按照以下步骤进行：Test 1, the preparation method of a kind of anti-lightning strike composite surface film of this test is carried out according to the following steps:
一、按质量份数称取90份的环氧树脂、40份的微米银薄片、2份碳纳米材料、12份增韧改性剂、10份耐热改性剂、30份的固化剂和2份UV稳定剂；One, take by weight 90 parts of epoxy resin, 40 parts of micron silver flakes, 2 parts of carbon nanomaterials, 12 parts of toughening modifiers, 10 parts of heat-resistant modifiers, 30 parts of curing agents and 2 parts UV stabilizer;
二、将步骤一称取的环氧树脂在高速分散机中加热到150～170℃，步骤一中称取的碳纳米材料加入到高速分散机中高速搅拌60～120min，得到共混树脂；2. Heat the epoxy resin weighed in step 1 to 150-170°C in a high-speed disperser, add the carbon nanomaterials weighed in step 1 into the high-speed disperser and stir at high speed for 60-120min to obtain a blended resin;
三、将步骤二中共混树脂加热至160～180℃，在超声波分散机中进一步分散；3. Heat the blended resin in step 2 to 160-180°C, and further disperse in an ultrasonic disperser;
四、将步骤三中的共混树脂与步骤一中称取的微米银薄片在三辊研磨机中研磨3遍，再与步骤一中称取的增韧改性剂、耐热改性剂、固化剂、UV稳定剂加入到捏合机中，120～140℃下捏合30～60min，再抽真空10～30min；Four, the blended resin in step 3 and the micron silver flakes weighed in step 1 are ground 3 times in a three-roll mill, and then with the toughening modifier, heat-resistant modifier, Add curing agent and UV stabilizer to the kneader, knead at 120-140°C for 30-60 minutes, and then vacuumize for 10-30 minutes;
五、将步骤四中的树脂在载体辅助下采用热熔压膜机上成膜，成膜温度为80～100℃。5. The resin in step 4 is assisted by a carrier to form a film on a hot-melt film laminator, and the film-forming temperature is 80-100°C.
本试验所述的高速搅拌机搅拌速度不低于1500r/min；The stirring speed of the high-speed mixer mentioned in this test shall not be lower than 1500r/min;
本实施方式所述的真空捏合机真空度不低于-0.092Mpa；The vacuum degree of the vacuum kneader described in this embodiment is not lower than -0.092Mpa;
本试验的环氧树脂为N,N,N’,N’-四(环氧乙烷基甲基)-1,3-苯二甲胺：萘基酚醛环氧树脂按质量比为10:1的比例组成；The epoxy resin used in this test is N,N,N',N'-tetrakis(oxiranylmethyl)-1,3-xylylenediamine:naphthyl novolac epoxy resin in a mass ratio of 10:1 The proportion composition;
本试验的增韧改性剂为；增韧改性剂为聚酰亚胺和聚酰胺酰亚胺按质量比为3:2的共混纳米粉末，粉末颗粒为30μm～50μm；The toughening modifier in this test is; the toughening modifier is a blended nano-powder of polyimide and polyamide-imide in a mass ratio of 3:2, and the powder particle size is 30 μm to 50 μm;
本试验的耐热改性剂为含硅芳炔树脂；The heat-resistant modifier in this test is silicon-containing aryne resin;
本试验的UV稳定剂为金红石型纳米钛白粉；The UV stabilizer of this test is rutile nano-titanium dioxide;
本试验的载体为聚酯无纺布。The carrier of this test is polyester non-woven fabric.
试验2、本试验一种防雷击复合材料表面膜的制备方法按照以下步骤进行：Test 2, the preparation method of a kind of anti-lightning strike composite surface film of this test is carried out according to the following steps:
一、按质量份数称取90份的环氧树脂、30份的微米银薄片、3份碳纳米材料、10份增韧改性剂、12份耐热改性剂、30份的固化剂和2份UV稳定剂；One, take by weight 90 parts of epoxy resin, 30 parts of micron silver flakes, 3 parts of carbon nanomaterials, 10 parts of toughening modifiers, 12 parts of heat-resistant modifiers, 30 parts of curing agents and 2 parts UV stabilizer;
二、将步骤一称取的环氧树脂在高速分散机中加热到150～170℃，步骤一中称取的碳纳米材料加入到高速分散机中高速搅拌60～120min，得到共混树脂；2. Heat the epoxy resin weighed in step 1 to 150-170°C in a high-speed disperser, add the carbon nanomaterials weighed in step 1 into the high-speed disperser and stir at high speed for 60-120min to obtain a blended resin;
三、将步骤二中共混树脂加热至160～180℃，在超声波分散机中进一步分散；3. Heat the blended resin in step 2 to 160-180°C, and further disperse in an ultrasonic disperser;
四、将步骤三中的共混树脂与步骤一中称取的微米银薄片在三辊研磨机中研磨3遍，再与步骤一中称取的增韧改性剂、耐热改性剂、固化剂、UV稳定剂加入到捏合机中， 120～140℃下捏合30～60min，再抽真空10～30min；Four, the blended resin in step 3 and the micron silver flakes weighed in step 1 are ground 3 times in a three-roll mill, and then with the toughening modifier, heat-resistant modifier, Add curing agent and UV stabilizer to the kneader, knead at 120-140°C for 30-60 minutes, and then vacuumize for 10-30 minutes;
五、将步骤四中的树脂在载体辅助下采用热熔压膜机上成膜，成膜温度为80～100℃。5. The resin in step 4 is assisted by a carrier to form a film on a hot-melt film laminator, and the film-forming temperature is 80-100°C.
本试验所述的高速搅拌机搅拌速度不低于1500r/min；The stirring speed of the high-speed mixer mentioned in this test shall not be lower than 1500r/min;
本实施方式所述的真空捏合机真空度不低于-0.092Mpa；The vacuum degree of the vacuum kneader described in this embodiment is not lower than -0.092Mpa;
本试验的环氧树脂为N,N,N’,N’-四(环氧乙烷基甲基)-1,3-苯二甲胺：萘基酚醛环氧树脂按质量比为10:1的比例组成；The epoxy resin used in this test is N,N,N',N'-tetrakis(oxiranylmethyl)-1,3-xylylenediamine:naphthyl novolac epoxy resin in a mass ratio of 10:1 The proportion composition;
本试验的增韧改性剂为；增韧改性剂为聚酰亚胺和聚酰胺酰亚胺按质量比为3:2的共混纳米粉末，粉末颗粒为30μm～50μm；The toughening modifier in this test is; the toughening modifier is a blended nano-powder of polyimide and polyamide-imide in a mass ratio of 3:2, and the powder particle size is 30 μm to 50 μm;
本试验的耐热改性剂为含硅芳炔树脂；The heat-resistant modifier in this test is silicon-containing aryne resin;
本试验的UV稳定剂为金红石型纳米钛白粉；The UV stabilizer of this test is rutile nano-titanium dioxide;
本试验的载体为聚酯无纺布。The carrier of this test is polyester non-woven fabric.
试验1～试验2制备得到防雷击复合材料表面膜基本性能如下表1：The basic properties of the lightning protection composite material surface film prepared in Test 1 to Test 2 are shown in Table 1:
表1防雷击复合材料表面膜基本性能Table 1 Basic properties of lightning protection composite surface film
对比样1为环氧树脂表面膜添加3％质量分数的石墨烯，对比样2为环氧树脂表面膜添加60％质量分数的银薄片。本发明的防雷击复合材料表面膜在相对于纯银薄片添加的试样单位面积质量大幅降低的情况下，保持了很低电阻值，有益于复合材料遭遇雷击后顺利导出雷电流。Comparative sample 1 is an epoxy resin surface film with 3% mass fraction of graphene added, and comparative sample 2 is an epoxy resin surface film with 60% mass fraction of silver flakes added. The surface film of the anti-lightning composite material of the present invention maintains a very low resistance value when the weight per unit area of the sample added to the pure silver flake is greatly reduced, which is beneficial to the smooth conduction of lightning current after the composite material encounters a lightning strike.
实施例3Example 3
将实施例1和2制备的防雷击复合材料表面膜制备防雷击复合材料，具体过程如下：The anti-lightning composite material surface film prepared in Examples 1 and 2 is used to prepare the anti-lightning composite material, and the specific process is as follows:
将防雷击复合材料表面膜平整铺附于预浸料外表面，在热压罐180℃、高压0.6MPa下进行共固化，得防雷击复合材料。Lay the surface film of the anti-lightning composite material on the outer surface of the prepreg evenly, and carry out co-curing in an autoclave at 180°C and a high pressure of 0.6MPa to obtain the anti-lightning composite material.
经过固化过程防雷击复合材料表面膜中的片状微米银薄片垂直于压力方向呈现规则排列，如附图1。微米银薄片的片层排列有利于电流的导通，且碳纳米管在银薄片间产生桥梁作用，降低银薄片间电阻，最终可达到复合材料的防雷击功能。After the curing process, the flaky micron silver flakes in the surface film of the lightning protection composite material are arranged in a regular manner perpendicular to the pressure direction, as shown in Figure 1. The sheet arrangement of micron silver flakes is conducive to the conduction of current, and the carbon nanotubes form a bridge between the silver flakes to reduce the resistance between the silver flakes, and finally achieve the lightning protection function of the composite material.
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Application publication date: 20181127 |