CN106373695A - 一种磁体复合材料及其制备方法 - Google Patents

一种磁体复合材料及其制备方法 Download PDF

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CN106373695A
CN106373695A CN201610793203.XA CN201610793203A CN106373695A CN 106373695 A CN106373695 A CN 106373695A CN 201610793203 A CN201610793203 A CN 201610793203A CN 106373695 A CN106373695 A CN 106373695A
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周飞燕
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Xiangmei Magnetism Industry (Shenzhen) Co., Ltd.
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Abstract

本发明公开了一种磁体复合材料及其制备方法，磁性粉体，70‑80份；双酚A型环氧树脂，8‑12份；分散剂，3‑5份；3‑氨丙基三乙氧基硅烷，2‑4份；聚乙二醇，1‑3份；所述分散剂为改性纳米沸石粉，制备方法为：将纳米沸石粉放入硼酸水溶液中，所述纳米沸石粉与硼酸水溶液的体积比为1:1.4‑1.6，所述硼酸水溶液的pH为3.3‑3.9，浸泡6‑8小时，随后倒去硼酸水溶液，用水将纳米沸石粉洗成pH为6.6‑7.0，45‑55℃烘干即得。本发明制备的磁体复合材料磁导率高，电感量高且稳定，与现有技术相比具有突出的实质性特点和显著的进步。

Description

一种磁体复合材料及其制备方法
技术领域
本发明属于材料领域，具体涉及一种磁体复合材料及其制备方法。
背景技术
磁性产品种类繁多，应用广泛，在军事装备电子化及高新技术产业发展中起着重要作用，磁体复合材料仅是其中的一个分支。磁体复合材料一般由粉末材料填充形成，体积含量为2～98％，而基体可以为金属、玻璃、聚合物等。磁体复合材料可将磁能转化为机械能，也可以将机械能转化为磁能。从磁体复合材料组成看，它是一种介于高分子材料和磁性材料之间的功能型材料。
磁体复合材料是20世纪70年代发展起来的一种新型高分子功能材料，是现代科学技术领域的重要基础材料之一。磁体复合材料按组成可分为结构型和复合型两种，结构型磁体复合材料是指聚合物本身具有强磁性的磁体；复合型磁体复合材料是指以橡胶或塑料为粘合剂与磁性粉末混合粘结加工而制成的磁体。
磁体复合材料的主要优点是：密度小、耐冲击强度大，制品可进行切割、钻孔、焊接、层压和压花纹等加工，而且使用时不会发生碎裂。它可以采用一般塑料通用的加工方法(如注射、模压、挤出等)进行加工，易于加工成尺寸精度高、薄壁、复杂形状的制品，可成型带嵌件制品，对电磁设备实现小型化、轻量化、精密化和高性能化的目标起着关键的作用，因而越来越多为人们所重视，是一种很有前途的基础功能材料。
发明内容
本发明的目的在于提供一种磁体复合材料及其制备方法。
本发明的上述目的是通过下面的技术方案得以实现的：
一种磁体复合材料，通过如下重量份的原料制备而成：磁性粉体，70-80份；双酚A型环氧树脂，8-12份；分散剂，3-5份；3-氨丙基三乙氧基硅烷，2-4份；聚乙二醇，1-3份；所述分散剂为改性纳米沸石粉，制备方法为：将纳米沸石粉放入硼酸水溶液中，所述纳米沸石粉与硼酸水溶液的体积比为1:1.4-1.6，所述硼酸水溶液的pH为3.3-3.9，浸泡6-8小时，随后倒去硼酸水溶液，用水将纳米沸石粉洗成pH为6.6-7.0，45-55℃烘干即得。
优选地，所述改性纳米沸石粉的制备方法为：将纳米沸石粉放入硼酸水溶液中，所述纳米沸石粉与硼酸水溶液的体积比为1:1.5，所述硼酸水溶液的pH为3.6，浸泡7小时，随后倒去硼酸水溶液，用水将纳米沸石粉洗成pH为6.8，50℃烘干即得所述改性纳米沸石粉。
优选地，所述磁体复合材料通过如下重量份的原料制备而成：磁性粉体，75份；双酚A型环氧树脂，10份；分散剂，4份；3-氨丙基三乙氧基硅烷，3份；聚乙二醇，2份。
优选地，所述磁体复合材料通过如下重量份的原料制备而成：磁性粉体，70份；双酚A型环氧树脂，8份；分散剂，3份；3-氨丙基三乙氧基硅烷，2份；聚乙二醇，1份。
优选地，所述磁体复合材料通过如下重量份的原料制备而成：磁性粉体，80份；双酚A型环氧树脂，12份；分散剂，5份；3-氨丙基三乙氧基硅烷，4份；聚乙二醇，3份。
优选地，所述磁性粉体选自铁硅粉、铁粉、铁硅铝粉、铁硅铬粉或铁镍粉。
上述磁体复合材料的制备方法，包括如下步骤：先将双酚A型环氧树脂、分散剂、3-氨丙基三乙氧基硅烷和聚乙二醇混合均匀，再加入磁性粉体，搅拌均匀，使双酚A型环氧树脂均匀地包裹在磁性粉体的表面，最后在120℃固化2h。
本发明的优点：
本发明制备的磁体复合材料磁导率高，电感量高且稳定，与现有技术相比具有突出的实质性特点和显著的进步。
具体实施方式
下面结合实施例进一步说明本发明的实质性内容，但并不以此限定本发明保护范围。尽管参照较佳实施例对本发明作了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的实质和范围。下述实施例中，磁性粉体均使用铁硅粉，当然也可以使用铁粉、铁硅铝粉、铁硅铬粉或铁镍粉。
实施例1：磁体复合材料的制备
原料重量份比：
磁性粉体，75份；双酚A型环氧树脂，10份；分散剂，4份；3-氨丙基三乙氧基硅烷，3份；聚乙二醇，2份。
其中，所述分散剂为改性纳米沸石粉，制备方法为：将纳米沸石粉放入硼酸水溶液中，所述纳米沸石粉与硼酸水溶液的体积比为1:1.5，所述硼酸水溶液的pH为3.6，浸泡7小时，随后倒去硼酸水溶液，用水将纳米沸石粉洗成pH为6.8，50℃烘干即得所述改性纳米沸石粉。
磁性粉体的制备方法：
先将双酚A型环氧树脂、分散剂、3-氨丙基三乙氧基硅烷和聚乙二醇混合均匀，再加入磁性粉体，搅拌均匀，使双酚A型环氧树脂均匀地包裹在磁性粉体表面，最后在120℃固化2h。
实施例2：磁体复合材料的制备
原料重量份比：
磁性粉体，70份；双酚A型环氧树脂，8份；分散剂，3份；3-氨丙基三乙氧基硅烷，2份；聚乙二醇，1份。
其中，所述分散剂为改性纳米沸石粉，制备方法为：将纳米沸石粉放入硼酸水溶液中，所述纳米沸石粉与硼酸水溶液的体积比为1:1.5，所述硼酸水溶液的pH为3.6，浸泡7小时，随后倒去硼酸水溶液，用水将纳米沸石粉洗成pH为6.8，50℃烘干即得所述改性纳米沸石粉。
磁性粉体的制备方法：
先将双酚A型环氧树脂、分散剂、3-氨丙基三乙氧基硅烷和聚乙二醇混合均匀，再加入磁性粉体，搅拌均匀，使双酚A型环氧树脂均匀地包裹在磁性粉体表面，最后在120℃固化2h。
实施例3：磁体复合材料的制备
原料重量份比：
磁性粉体，80份；双酚A型环氧树脂，12份；分散剂，5份；3-氨丙基三乙氧基硅烷，4份；聚乙二醇，3份。
其中，所述分散剂为改性纳米沸石粉，制备方法为：将纳米沸石粉放入硼酸水溶液中，所述纳米沸石粉与硼酸水溶液的体积比为1:1.5，所述硼酸水溶液的pH为3.6，浸泡7小时，随后倒去硼酸水溶液，用水将纳米沸石粉洗成pH为6.8，50℃烘干即得所述改性纳米沸石粉。
磁性粉体的制备方法：
先将双酚A型环氧树脂、分散剂、3-氨丙基三乙氧基硅烷和聚乙二醇混合均匀，再加入磁性粉体，搅拌均匀，使双酚A型环氧树脂均匀地包裹在磁性粉体表面，最后在120℃固化2h。
实施例4：磁体复合材料的制备
原料重量份比：
磁性粉体，75份；双酚A型环氧树脂，10份；分散剂，3份；3-氨丙基三乙氧基硅烷，3份；聚乙二醇，2份。
其中，所述分散剂为改性纳米沸石粉，制备方法为：将纳米沸石粉放入硼酸水溶液中，所述纳米沸石粉与硼酸水溶液的体积比为1:1.5，所述硼酸水溶液的pH为3.6，浸泡7小时，随后倒去硼酸水溶液，用水将纳米沸石粉洗成pH为6.8，50℃烘干即得所述改性纳米沸石粉。
磁性粉体的制备方法：
先将双酚A型环氧树脂、分散剂、3-氨丙基三乙氧基硅烷和聚乙二醇混合均匀，再加入磁性粉体，搅拌均匀，使双酚A型环氧树脂均匀地包裹在磁性粉体表面，最后在120℃固化2h。
实施例5：磁体复合材料的制备
原料重量份比：
磁性粉体，75份；双酚A型环氧树脂，10份；分散剂，5份；3-氨丙基三乙氧基硅烷，3份；聚乙二醇，2份。
其中，所述分散剂为改性纳米沸石粉，制备方法为：将纳米沸石粉放入硼酸水溶液中，所述纳米沸石粉与硼酸水溶液的体积比为1:1.5，所述硼酸水溶液的pH为3.6，浸泡7小时，随后倒去硼酸水溶液，用水将纳米沸石粉洗成pH为6.8，50℃烘干即得所述改性纳米沸石粉。
磁性粉体的制备方法：
先将双酚A型环氧树脂、分散剂、3-氨丙基三乙氧基硅烷和聚乙二醇混合均匀，再加入磁性粉体，搅拌均匀，使双酚A型环氧树脂均匀地包裹在磁性粉体表面，最后在120℃固化2h。
实施例6：对比实施例，纳米沸石粉不改性
原料重量份比：
磁性粉体，75份；双酚A型环氧树脂，10份；分散剂，4份；3-氨丙基三乙氧基硅烷，3份；聚乙二醇，2份；其中，所述分散剂为纳米沸石粉。
磁性粉体的制备方法：
先将双酚A型环氧树脂、分散剂、3-氨丙基三乙氧基硅烷和聚乙二醇混合均匀，再加入磁性粉体，搅拌均匀，使双酚A型环氧树脂均匀地包裹在磁性粉体表面，最后在120℃固化2h。
实施例7：效果实施例
利用实施例1-6所述复合材料制造相同规格的电感，与现有一体成型制造的电感做电气性能对比测试，结果如下表：
现有一体成型电感 实施例1 实施例6
线圈圈数 30 30 30
有效磁路长度1(cm) 15.8 15.8 15.8
初始感量L@0A 204.15 288.65 279.85
5A电流下保留感量L@5A 181.40 287.24 194.35
实施例2-5测定结果与实施例1基本一致，不再一一罗列。
结果表明，本发明制备的磁体复合材料磁导率高，电感量高且稳定，与现有技术相比具有突出的实质性特点和显著的进步。
上述实施例的作用在于说明本发明的实质性内容，但并不以此限定本发明的保护范围。本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的实质和保护范围。

Claims (7)

1.一种磁体复合材料，其特征在于，通过如下重量份的原料制备而成：磁性粉体，70-80份；双酚A型环氧树脂，8-12份；分散剂，3-5份；3-氨丙基三乙氧基硅烷，2-4份；聚乙二醇，1-3份；所述分散剂为改性纳米沸石粉，制备方法为：将纳米沸石粉放入硼酸水溶液中，所述纳米沸石粉与硼酸水溶液的体积比为1:1.4-1.6，所述硼酸水溶液的pH为3.3-3.9，浸泡6-8小时，随后倒去硼酸水溶液，用水将纳米沸石粉洗成pH为6.6-7.0，45-55℃烘干即得。
2.根据权利要求1所述的磁体复合材料，其特征在于，所述改性纳米沸石粉的制备方法为：将纳米沸石粉放入硼酸水溶液中，所述纳米沸石粉与硼酸水溶液的体积比为1:1.5，所述硼酸水溶液的pH为3.6，浸泡7小时，随后倒去硼酸水溶液，用水将纳米沸石粉洗成pH为6.8，50℃烘干即得所述改性纳米沸石粉。
3.根据权利要求1所述的磁体复合材料，其特征在于，所述磁体复合材料通过如下重量份的原料制备而成：磁性粉体，75份；双酚A型环氧树脂，10份；分散剂，4份；3-氨丙基三乙氧基硅烷，3份；聚乙二醇，2份。
4.根据权利要求1所述的磁体复合材料，其特征在于，所述磁体复合材料通过如下重量份的原料制备而成：磁性粉体，70份；双酚A型环氧树脂，8份；分散剂，3份；3-氨丙基三乙氧基硅烷，2份；聚乙二醇，1份。
5.根据权利要求1所述的磁体复合材料，其特征在于，所述磁体复合材料通过如下重量份的原料制备而成：磁性粉体，80份；双酚A型环氧树脂，12份；分散剂，5份；3-氨丙基三乙氧基硅烷，4份；聚乙二醇，3份。
6.根据权利要求1-5任一所述的磁体复合材料，其特征在于：所述磁性粉体选自铁硅粉、铁粉、铁硅铝粉、铁硅铬粉或铁镍粉。
7.权利要求1-5任一所述磁体复合材料的制备方法，其特征在于，包括如下步骤：先将双酚A型环氧树脂、分散剂、3-氨丙基三乙氧基硅烷和聚乙二醇混合均匀，再加入磁性粉体，搅拌均匀，使双酚A型环氧树脂均匀地包裹在磁性粉体的表面，最后在120℃固化2h。
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