CN105153645A - Method for toughened epoxy resin by synergistic effect of epoxidized soybean oil and polyether amine - Google Patents
Method for toughened epoxy resin by synergistic effect of epoxidized soybean oil and polyether amine Download PDFInfo
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- 239000003822 epoxy resin Substances 0.000 title claims abstract description 68
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 68
- 239000003549 soybean oil Substances 0.000 title claims abstract description 51
- 235000012424 soybean oil Nutrition 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000004721 Polyphenylene oxide Substances 0.000 title abstract description 11
- 150000001412 amines Chemical class 0.000 title abstract description 11
- 229920000570 polyether Polymers 0.000 title abstract description 11
- 230000002195 synergetic effect Effects 0.000 title description 2
- 239000004593 Epoxy Substances 0.000 claims abstract description 40
- 239000000203 mixture Substances 0.000 claims abstract description 21
- AHDSRXYHVZECER-UHFFFAOYSA-N 2,4,6-tris[(dimethylamino)methyl]phenol Chemical compound CN(C)CC1=CC(CN(C)C)=C(O)C(CN(C)C)=C1 AHDSRXYHVZECER-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 238000012360 testing method Methods 0.000 claims description 8
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 4
- 125000003700 epoxy group Chemical group 0.000 claims description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims 2
- 125000003368 amide group Chemical group 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 238000001291 vacuum drying Methods 0.000 claims 1
- 239000012745 toughening agent Substances 0.000 abstract description 11
- -1 ether amine Chemical class 0.000 abstract description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000009849 vacuum degassing Methods 0.000 abstract description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 230000009477 glass transition Effects 0.000 description 5
- NFVPEIKDMMISQO-UHFFFAOYSA-N 4-[(dimethylamino)methyl]phenol Chemical compound CN(C)CC1=CC=C(O)C=C1 NFVPEIKDMMISQO-UHFFFAOYSA-N 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229920000587 hyperbranched polymer Polymers 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Epoxy Resins (AREA)
Abstract
本发明一种环氧大豆油与聚醚胺协同作用增韧环氧树脂的方法，属于环氧树脂复合材料制备技术领域。1）先将环氧树脂与环氧大豆油同时置于70℃烘箱中，使其具有一定的流动性；2）称取相应配方的环氧树脂，增韧剂环氧大豆油，固化剂聚醚胺，促进剂2,4,6-三（二甲胺基甲基）苯酚混合均匀；3）将步骤2中的混合物置于真空烘箱中抽真空脱泡，反复几次至气泡全部消失；4）将脱泡好的混合物置于聚四氟乙烯模框中，在80℃下预固化两个小时，120℃下固化六个小时，在150℃下后固化一个小时；5）将成型后的固化产物脱模，按相应的国家标准进行裁样并测试。本发明制备的增韧环氧树脂韧性极佳，同时也能保证材料具备一定的强度。
The invention discloses a method for synergistically acting on epoxy soybean oil and polyether amine to toughen epoxy resin, belonging to the technical field of epoxy resin composite material preparation. 1) Put the epoxy resin and epoxy soybean oil in an oven at 70°C at the same time to make it have a certain fluidity; 2) Weigh the epoxy resin with the corresponding formula, the toughening agent epoxy soybean oil, Mix ether amine and accelerator 2,4,6-tris(dimethylaminomethyl)phenol evenly; 3) Put the mixture in step 2 in a vacuum oven for vacuum degassing, repeat several times until all the bubbles disappear; 4) Put the defoamed mixture in a polytetrafluoroethylene mold frame, pre-cure at 80°C for two hours, cure at 120°C for six hours, and post-cure at 150°C for one hour; The cured product is released from the mold, and samples are cut and tested according to the corresponding national standards. The toughened epoxy resin prepared by the invention has excellent toughness and can also ensure that the material has a certain strength.
Description
技术领域 technical field
本发明涉及利用一种环氧大豆油作为增韧剂，同时采用一种链柔性较好的聚醚胺作为固化剂，对环氧树脂进行增韧改性，环氧树脂/环氧大豆油混合物经固化后形成的固化物在保持材料原有性能的同时极大地提高了其韧性，属于环氧树脂复合材料制备的技术领域。 The invention relates to using a kind of epoxidized soybean oil as a toughening agent, and at the same time adopting a kind of polyether amine with good chain flexibility as a curing agent to carry out toughening modification on epoxy resin, epoxy resin/epoxy soybean oil mixture The cured product formed after curing greatly improves its toughness while maintaining the original properties of the material, and belongs to the technical field of epoxy resin composite material preparation.
背景技术 Background technique
环氧树脂具有贮存稳定性高、加工工艺性能好、配方设计灵活多样、固化过程中体积收缩率低等优点，且其固化物具有优良的机械性能、耐化学药品性、电气性能、黏接性等，其已成为目前广泛应用于机械、电子电器、航空航天、交通运输及建筑等各领域的热固性树脂之一。但是环氧树脂固化后的产物韧性较低，耐冲击性能差，这种缺陷造成了环氧树脂在实际应用过程中的局限性，尤其是作为航空航天等高端领域复合材料的应用。 Epoxy resin has the advantages of high storage stability, good processing performance, flexible formula design, low volume shrinkage during curing, and its cured product has excellent mechanical properties, chemical resistance, electrical properties, and adhesion It has become one of the thermosetting resins widely used in various fields such as machinery, electronic appliances, aerospace, transportation and construction. However, the cured epoxy resin has low toughness and poor impact resistance. This defect has caused limitations in the practical application of epoxy resin, especially as a composite material in high-end fields such as aerospace.
目前环氧树脂增韧改性的方法主要包括橡胶弹性体增韧、热塑性树脂增韧、无机刚性粒子增韧、超支化聚合物增韧、互穿聚合物网络增韧和化学改性增韧的方法。在本发明方法中，拟采用一种环氧大豆油作为增韧剂，同时采用一种链柔性较好的固化剂聚醚胺产生协同作用，对环氧树脂进行增韧改性。 At present, the toughening and modification methods of epoxy resin mainly include rubber elastomer toughening, thermoplastic resin toughening, inorganic rigid particle toughening, hyperbranched polymer toughening, interpenetrating polymer network toughening and chemical modification toughening. method. In the method of the present invention, an epoxidized soybean oil is used as a toughening agent, and at the same time, a curing agent polyether amine with good chain flexibility is used to produce a synergistic effect to toughen and modify the epoxy resin.
环氧大豆油本身的分子结构使其能作为一种增韧剂添加到环氧树脂中对其改性，同时，以聚醚胺作为固化剂，其中的柔性链段也可以使固化产物的柔韧性得到进一步提升。 The molecular structure of epoxy soybean oil itself enables it to be added to epoxy resin as a toughening agent to modify it. At the same time, polyetheramine is used as a curing agent, and the flexible segment in it can also make the cured product flexible. Sexuality is further enhanced.
发明内容 Contents of the invention
本发明的目的是通过向基体材料环氧树脂中添加一定量的环氧大豆油作为增韧剂，并通过链柔性较好的固化剂聚醚胺对其进行固化，弥补固化产物韧性不足的缺陷。通过在环氧树脂中加入环氧大豆油，利用环氧大豆油特殊的分子结构使其在用量很少时即能起到良好的增韧作用，同时环氧大豆油多官能度的结构也可以提高固化物的交联密度以保持材料强度。 The purpose of the present invention is to add a certain amount of epoxidized soybean oil as a toughening agent to the epoxy resin of the base material, and to cure it through polyetheramine, a curing agent with better chain flexibility, to make up for the defect of insufficient toughness of the cured product . By adding epoxidized soybean oil to the epoxy resin, the special molecular structure of epoxidized soybean oil can make it play a good toughening effect when the amount is small, and the multifunctional structure of epoxidized soybean oil can also Increase the crosslink density of the cured product to maintain the strength of the material.
本发明的增韧环氧树脂，其特征是：利用环氧大豆油与固化剂聚醚胺链柔性的特点，与环氧树脂混合后固化，制备一种增韧环氧树脂。 The toughened epoxy resin of the present invention is characterized in that the toughened epoxy resin is prepared by utilizing the flexible characteristics of epoxy soybean oil and curing agent polyether amine chains, mixing with epoxy resin and then curing.
本发明的一种利用环氧大豆油作为增韧剂，聚醚胺作为固化剂的增韧环氧树脂固化体系，其作用原理特征在于：在一定温度下，环氧树脂与环氧大豆油上的环氧基团可与固化剂聚醚胺上的胺基发生开环反应，由于环氧大豆油与聚醚胺结构本身具备的链柔性，使得固化产物也具备相应的韧性，同时多官能度的环氧大豆油更有利于在固化物中形成三维网状结构，在对树脂增韧的同时还能保持一定的强度。 A kind of toughened epoxy resin curing system using epoxy soybean oil as toughening agent and polyetheramine as curing agent of the present invention, its action principle is characterized in that: at a certain temperature, epoxy resin and epoxy soybean oil The epoxy group of the epoxy group can undergo a ring-opening reaction with the amine group on the curing agent polyetheramine. Due to the chain flexibility of the structure of epoxy soybean oil and polyetheramine, the cured product also has corresponding toughness and multi-functionality. Epoxidized soybean oil is more conducive to the formation of a three-dimensional network structure in the cured product, which can maintain a certain strength while toughening the resin.
本发明利用环氧大豆油作为增韧剂，链柔性较好的聚醚胺作为固化剂协同增韧环氧树脂。 The invention utilizes epoxidized soybean oil as a toughening agent and polyether amine with better chain flexibility as a curing agent to synergistically toughen the epoxy resin.
一种环氧大豆油与聚醚胺协同作用增韧环氧树脂的方法，按照下述步骤进行： A method for epoxy soybean oil and polyether amine synergistically toughening epoxy resin is carried out according to the following steps:
1)先将环氧树脂与环氧大豆油同时放置于70℃烘箱中，使其具有一定的流动性； 1) First place the epoxy resin and epoxy soybean oil in a 70°C oven at the same time to make it have a certain fluidity;
2)称取相应配方的环氧树脂，增韧剂环氧大豆油，固化剂聚醚胺，促进剂2,4,6-三(二甲胺基甲基)苯酚混合均匀； 2) Weigh the epoxy resin of the corresponding formula, the toughening agent epoxidized soybean oil, the curing agent polyetheramine, and the accelerator 2,4,6-tris(dimethylaminomethyl)phenol and mix evenly;
3)将步骤2中的混合物置于真空烘箱中抽真空脱泡，反复几次至气泡全部消失； 3) Place the mixture in step 2 in a vacuum oven to vacuumize and defoam, repeat several times until all the bubbles disappear;
4)将脱泡好的混合物置于聚四氟乙烯模框中，在80℃下预固化两个小时，120℃下固化六个小时，在150℃下后固化一个小时； 4) Place the defoamed mixture in a polytetrafluoroethylene mold frame, pre-cure at 80°C for two hours, cure at 120°C for six hours, and post-cure at 150°C for one hour;
5)将成型后的固化产物脱模，按相应国家标准进行裁样和测试。 5) Demould the cured product after molding, and carry out sample cutting and testing according to the corresponding national standards.
按上述方案中所述的环氧树脂为环氧值0.44mol/100g的双酚A型环氧树脂E44，结构如式所示： The epoxy resin described in the above scheme is bisphenol A type epoxy resin E44 with an epoxy value of 0.44mol/100g, and the structure is as shown in the formula:
按上述方案中所述的环氧大豆油环氧值为6.6％，其结构式如下式所示： The epoxidized soybean oil epoxy value described in the above scheme is 6.6%, and its structural formula is as follows:
所选固化剂是T型或D型聚醚胺中的任意一种或几种。 The selected curing agent is any one or more of T-type or D-type polyetheramines.
按上述方案中所述的固化剂为分子量230g/mol且官能度为2的聚醚胺，其结构式如下式所示： The curing agent described in the above scheme is a polyetheramine with a molecular weight of 230g/mol and a functionality of 2, and its structural formula is as follows:
CH3CH(NH2)CH2[OCH2CH(CH3)]2.6NH2。 CH 3 CH(NH 2 )CH 2 [OCH 2 CH(CH 3 )] 2.6 NH 2 .
按上述步骤2)中固化剂聚醚胺中的胺基与环氧树脂和增韧剂环氧大豆油中环氧基的摩尔比为1:1。 According to the above step 2), the molar ratio of the amine group in the curing agent polyetheramine to the epoxy group in the epoxy resin and the toughening agent epoxy soybean oil is 1:1.
按上述步骤2)中促进剂2,4,6-三(二甲胺基甲基)苯酚用量为环氧树脂与环氧大豆油总质量的1.5％。 According to the above step 2), the amount of accelerator 2,4,6-tris(dimethylaminomethyl)phenol is 1.5% of the total mass of epoxy resin and epoxidized soybean oil.
聚四氟乙烯模框厚度为2mm。 The thickness of the polytetrafluoroethylene mold frame is 2mm.
固化工艺为在80℃下预固化两个小时，120℃下固化六个小时，在150℃下后固化一个小时。 The curing process is pre-curing at 80°C for two hours, curing at 120°C for six hours, and post-curing at 150°C for one hour.
本发明与现有技术相比具有以下有益效果： Compared with the prior art, the present invention has the following beneficial effects:
①采用环氧大豆油作为增韧剂，聚醚胺作为固化剂对环氧树脂进行增韧改性，反应机理明确，可以得到理想的增韧产物； ① Epoxy soybean oil is used as a toughening agent and polyether amine is used as a curing agent to toughen and modify epoxy resin. The reaction mechanism is clear and an ideal toughened product can be obtained;
②环氧大豆油作为一种多官能度的增韧剂，可以在固化过程中形成交联网络，在增韧的同时保持材料的强度。 ②Epoxidized soybean oil, as a multifunctional toughening agent, can form a cross-linked network during the curing process, and maintain the strength of the material while toughening.
附图说明 Description of drawings
图1为实施例1，2，3，4，5的拉伸曲线，环氧大豆油添加量对环氧树脂材料断裂伸长率的影响。 Fig. 1 is the tensile curve of embodiment 1, 2, 3, 4, 5, the influence of epoxy soybean oil addition on the elongation at break of epoxy resin material.
图2为实施例1，2，3，4，5的拉伸曲线，环氧大豆油添加量对环氧树脂材料断裂拉伸强度的影响。 Fig. 2 is the tensile curve of embodiment 1,2,3,4,5, the influence of epoxy soybean oil addition amount on the breaking tensile strength of epoxy resin material.
具体实施方式 Detailed ways
以下通过具体实例来说明本发明，但本发明不仅仅局限于本实验。实验制备的增韧环氧树脂，通过高温红外表征了固化过程中相应基团的变化，对样品进行了拉伸强度，断裂伸长率，动态力学性能，耐水性等相关测试。 The present invention is illustrated by specific examples below, but the present invention is not limited to this experiment. For the toughened epoxy resin prepared in the experiment, the changes of the corresponding groups during the curing process were characterized by high-temperature infrared, and the tensile strength, elongation at break, dynamic mechanical properties, water resistance and other related tests were carried out on the samples.
为了对本发明进行进一步理解，下面结合具体实例对本发明进行详细描述： In order to further understand the present invention, the present invention will be described in detail below in conjunction with specific examples:
在下列实施例的合成配方中，环氧树脂由南通星辰合成材料有限公司提供，环氧大豆油，聚醚胺，2,4,6-三(二甲胺基甲基)苯酚由中国上海阿拉丁试剂公司提供。 In the synthetic formulation of the following examples, epoxy resin is provided by Nantong Xingchen Synthetic Materials Co., Ltd., epoxy soybean oil, polyether amine, and 2,4,6-tris(dimethylaminomethyl)phenol are provided by China Shanghai A Courtesy of Latin Reagent Company.
实施例1： Example 1:
1)先将环氧树脂与环氧大豆油同时置于70℃烘箱中，使其具有一定的流动性； 1) Put the epoxy resin and epoxidized soybean oil in a 70°C oven at the same time to make it have certain fluidity;
2)称取100g环氧值为0.44mol/100g的环氧树脂，50.6g固化剂聚醚胺，1.50g促进剂2,4,6-三(二甲胺基甲基)苯酚混合均匀； 2) Weigh 100g of epoxy resin with an epoxy value of 0.44mol/100g, 50.6g of curing agent polyetheramine, and 1.50g of accelerator 2,4,6-tris(dimethylaminomethyl)phenol and mix evenly;
3)将步骤2中的混合物置于真空烘箱中抽真空脱泡，反复几次至气泡全部消失； 3) Place the mixture in step 2 in a vacuum oven to vacuumize and defoam, repeat several times until all the bubbles disappear;
4)将脱泡好的混合物置于聚四氟乙烯模框中，在80℃下预固化两个小时，120℃下固化六个小时，在150℃下后固化一个小时； 4) Place the defoamed mixture in a polytetrafluoroethylene mold frame, pre-cure at 80°C for two hours, cure at 120°C for six hours, and post-cure at 150°C for one hour;
5)将成型后的固化产物脱模，按相应国家标准进行裁样和测试。 5) Demould the cured product after molding, and carry out sample cutting and testing according to the corresponding national standards.
本发明的增韧环氧树脂固化成型后，主要性能如下： After the toughened epoxy resin of the present invention is cured and molded, the main properties are as follows:
1，拉伸强度：45.3MPa 1. Tensile strength: 45.3MPa
2，断裂伸长率：2.4％ 2. Elongation at break: 2.4%
3，玻璃化转变温度：43℃ 3. Glass transition temperature: 43°C
实施例2： Example 2:
1)先将环氧树脂与环氧大豆油同时置于70℃烘箱中，使其具有一定的流动性； 1) Put the epoxy resin and epoxidized soybean oil in a 70°C oven at the same time to make it have certain fluidity;
2)称取100g环氧值为0.44mol/100g的环氧树脂，5g环氧大豆油(占环氧树脂质量的5％)，52.8g固化剂聚醚胺，1.58g促进剂2,4,6-三(二甲胺基甲基)苯酚混合均匀； 2) take by weighing the epoxy resin of 100g epoxy value 0.44mol/100g, 5g epoxy soybean oil (accounting for 5% of epoxy resin quality), 52.8g curing agent polyether amine, 1.58g accelerator 2,4, 6-three (dimethylaminomethyl) phenol is mixed evenly;
3)将步骤2中的混合物置于真空烘箱中抽真空脱泡，反复几次至气泡全部消失； 3) Place the mixture in step 2 in a vacuum oven to vacuumize and defoam, repeat several times until all the bubbles disappear;
4)将脱泡好的混合物置于聚四氟乙烯模框中，在80℃下预固化两个小时，120℃下固化六个小时，在150℃下后固化一个小时； 4) Place the defoamed mixture in a polytetrafluoroethylene mold frame, pre-cure at 80°C for two hours, cure at 120°C for six hours, and post-cure at 150°C for one hour;
5)将成型后的固化产物脱模，按相应国家标准进行裁样和测试。 5) Demould the cured product after molding, and carry out sample cutting and testing according to the corresponding national standards.
本发明的增韧环氧树脂固化成型后，主要性能如下： After the toughened epoxy resin of the present invention is cured and molded, the main properties are as follows:
1，拉伸强度：56.3MPa 1. Tensile strength: 56.3MPa
2，断裂伸长率：4.3％ 2. Elongation at break: 4.3%
3，玻璃化转变温度：46℃ 3. Glass transition temperature: 46°C
实施例3： Example 3:
1)先将环氧树脂与环氧大豆油同时置于70℃烘箱中，使其具有一定的流动性； 1) Put the epoxy resin and epoxidized soybean oil in a 70°C oven at the same time to make it have certain fluidity;
2)称取100g环氧值为0.44mol/100g的环氧树脂，10g环氧大豆油(占环氧树脂质量的10％)，55.0g固化剂聚醚胺，1.5g促进剂2,4,6-三(二甲胺基甲基)苯酚混合均匀； 2) Take by weighing 100g epoxy resin with an epoxy value of 0.44mol/100g, 10g epoxy soybean oil (accounting for 10% of epoxy resin quality), 55.0g curing agent polyetheramine, 1.5g accelerator 2,4, 6-three (dimethylaminomethyl) phenol is mixed evenly;
3)将步骤2中的混合物置于真空烘箱中抽真空脱泡，反复几次至气泡全部消失； 3) Place the mixture in step 2 in a vacuum oven to vacuumize and defoam, repeat several times until all the bubbles disappear;
4)将脱泡好的混合物置于聚四氟乙烯模框中，在80℃下预固化两个小时，120℃下固化六个小时，在150℃下后固化一个小时； 4) Place the defoamed mixture in a polytetrafluoroethylene mold frame, pre-cure at 80°C for two hours, cure at 120°C for six hours, and post-cure at 150°C for one hour;
5)将成型后的固化产物脱模，按相应国家标准进行裁样和测试。 5) Demould the cured product after molding, and carry out sample cutting and testing according to the corresponding national standards.
本发明的增韧环氧树脂固化成型后，主要性能如下： After the toughened epoxy resin of the present invention is cured and molded, the main properties are as follows:
1，拉伸强度：39.7MPa 1. Tensile strength: 39.7MPa
2，断裂伸长率：5.6％ 2. Elongation at break: 5.6%
3，玻璃化转变温度：41℃ 3. Glass transition temperature: 41°C
实施例4： Example 4:
1)先将环氧树脂与环氧大豆油同时置于70℃烘箱中，使其具有一定的流动性； 1) Put the epoxy resin and epoxidized soybean oil in a 70°C oven at the same time to make it have certain fluidity;
2)称取100g环氧值为0.44mol/100g的环氧树脂，15g环氧大豆油(占环氧树脂质量的15％)，57.1g固化剂聚醚胺，1.5g促进剂2,4,6-三(二甲胺基甲基)苯酚混合均匀； 2) Take by weighing 100g epoxy resin with an epoxy value of 0.44mol/100g, 15g epoxy soybean oil (accounting for 15% of epoxy resin quality), 57.1g curing agent polyetheramine, 1.5g accelerator 2,4, 6-three (dimethylaminomethyl) phenol is mixed evenly;
3)将步骤2中的混合物置于真空烘箱中抽真空脱泡，反复几次至气泡全部消失； 3) Place the mixture in step 2 in a vacuum oven to vacuumize and defoam, repeat several times until all the bubbles disappear;
4)将脱泡好的混合物置于聚四氟乙烯模框中，在80℃下预固化两个小时，120℃下固化六个小时，在150℃下后固化一个小时； 4) Place the defoamed mixture in a polytetrafluoroethylene mold frame, pre-cure at 80°C for two hours, cure at 120°C for six hours, and post-cure at 150°C for one hour;
5)将成型后的固化产物脱模，按相应国家标准进行裁样和测试。 5) Demould the cured product after molding, and carry out sample cutting and testing according to the corresponding national standards.
本发明的增韧环氧树脂固化成型后，主要性能如下： After the toughened epoxy resin of the present invention is cured and molded, the main properties are as follows:
1，拉伸强度：34.2MPa 1. Tensile strength: 34.2MPa
2，断裂伸长率：105.4％ 2. Elongation at break: 105.4%
3，玻璃化转变温度：38℃ 3. Glass transition temperature: 38°C
实施例5： Example 5:
1)先将环氧树脂与环氧大豆油同时置于70℃烘箱中，使其具有一定的流动性； 1) Put the epoxy resin and epoxidized soybean oil in a 70°C oven at the same time to make it have certain fluidity;
2)称取100g环氧值为0.44mol/100g的环氧树脂，20g环氧大豆油(占环氧树脂质量的20％)，59.2g固化剂聚醚胺，1.80g促进剂2,4,6-三(二甲胺基甲基)苯酚混合均匀； 2) Take by weighing the epoxy resin of 100g epoxy value 0.44mol/100g, 20g epoxy soybean oil (accounting for 20% of epoxy resin quality), 59.2g curing agent polyether amine, 1.80g accelerator 2,4, 6-three (dimethylaminomethyl) phenol is mixed evenly;
3)将步骤2中的混合物置于真空烘箱中抽真空脱泡，反复几次至气泡全部消失； 3) Place the mixture in step 2 in a vacuum oven for vacuum degassing, repeat several times until all the bubbles disappear;
4)将脱泡好的混合物置于聚四氟乙烯模框中，在80℃下预固化两个小时，120℃下固化六个小时，在150℃下后固化一个小时； 4) Place the defoamed mixture in a polytetrafluoroethylene mold frame, pre-cure at 80°C for two hours, cure at 120°C for six hours, and post-cure at 150°C for one hour;
5)将成型后的固化产物脱模，按相应国家标准进行裁样和测试。 5) Demould the cured product after molding, and carry out sample cutting and testing according to the corresponding national standards.
本发明的增韧环氧树脂固化成型后，主要性能如下： After the toughened epoxy resin of the present invention is cured and molded, the main properties are as follows:
1，拉伸强度：31.2MPa 1. Tensile strength: 31.2MPa
2，断裂伸长率：127.7％ 2. Elongation at break: 127.7%
3，玻璃化转变温度：36℃。 3. Glass transition temperature: 36°C.
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