CN104823764B - 一种组合式农用发热片 - Google Patents
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Abstract
本发明公开一种组合式农用发热片，包括：发热片、安装框，所述发热片镶嵌在安装框内，发热片的两端电极分别连接于公接线柱和母接线柱上，公接线柱和母接线柱安装固定在安装框上，安装框两侧设有固定带，所述发热片包括：线性低密度聚乙烯层、PET膜层、电极，线性低密度聚乙烯层Ⅱ与线性低密度聚乙烯层Ⅲ之间设有PET无纺布层Ⅰ，PET无纺布层Ⅰ与线性低密度聚乙烯层Ⅱ之间连接处镶嵌有电极，线性低密度聚乙烯层Ⅲ外侧设有线性低密度聚乙烯层Ⅳ，线性低密度聚乙烯层Ⅳ外侧设有屏蔽层。本发明把防水层外部再用PVC树酯或聚丙烯树酯粘合来提高防水性，确保不发生漏电事故，适用于农业育苗托盘或大棚等含水量多的土壤里埋没使用。
Description
技术领域
本发明涉及发热片领域，具体为一种组合式农用发热片。
背景技术
合成树酯无纺布、粘合力强的合成树酯导电性碳黑和内置铜丝，在叠层体内完全粘合，不发生隔离现象，防止产生电火花，再用合成树酯把外部粘合作防水处理，制成的发热片，适用于农业育苗托盘或大棚等含水量多的土壤里埋没使用。
发热片是碳黑层发热体上面的两端排列电极后涂抹耐热性高分子膜作绝缘材料，因此称作面状发热片。这样的发热片全体散发热量，热效率极大化。部分膜损伤对发热效果无妨碍，所以具有半永久性使用特点。可以用作大棚内农作物栽培，或者用于辣椒、药材、海产品等烘干，产品使用领域有增加趋势，所以被广泛研究开发。
以往埋没在土壤里使用的发热片，从底部开始PET膜层、环氧树酯层、铜丝、印刷碳黑和PET膜层顺序叠层的构造。这样构造，铜丝和导电性碳黑不完全粘合。发热片施工制作电极时铜丝和碳黑发生隔离现象，通电时易发生火花，损坏绝缘性高分子树酯膜，造成使用寿命短，漏电的安全事故。
发明内容
本发明所解决的技术问题在于提供一种组合式农用发热片，以解决上述背景技术中提出的问题。
本发明所解决的技术问题采用以下技术方案来实现：
一种组合式农用发热片，包括：发热片、安装框，所述发热片镶嵌在安装框内，发热片的两端电极分别连接于公接线柱和母接线柱上，公接线柱和母接线柱安装固定在安装框上，安装框两侧设有固定带，所述发热片包括：线性低密度聚乙烯层、PET膜层、电极，所述线性低密度聚乙烯层包括线性低密度聚乙烯层Ⅰ、线性低密度聚乙烯层Ⅱ、线性低密度聚乙烯层Ⅲ、线性低密度聚乙烯层Ⅳ，所述线性低密度聚乙烯层Ⅰ与线性低密度聚乙烯层Ⅱ之间设有PET膜层，线性低密度聚乙烯层Ⅱ与线性低密度聚乙烯层Ⅲ之间设有PET无纺布层Ⅰ，PET无纺布层Ⅰ与线性低密度聚乙烯层Ⅱ之间连接处镶嵌有电极，PET无纺布层Ⅰ与线性低密度聚乙烯层Ⅲ之间设有碳黑层，线性低密度聚乙烯层Ⅲ外侧设有线性低密度聚乙烯层Ⅳ，线性低密度聚乙烯层Ⅳ外侧设有屏蔽层，线性低密度聚乙烯层Ⅳ与线性低密度聚乙烯层Ⅲ之间设有PET无纺布层Ⅱ。
优选地，所述线性低密度聚乙烯层、PET膜层、PET无纺布层厚度为30-150μm。
优选地，所述碳黑层厚度为30-500μm。
与现有技术相比，本发明的有益效果是：本发明把含有聚氨酯和环氧树酯的导电性碳黑液涂抹一起，让电极不发生分离，通电时不产生火花，绝缘性高分子树酯膜不易损坏，所以延长发热片寿命，还防止漏电发生的安全事故，达到农用发热片的目的；另外，本发明把防水层外部再用PVC树酯或聚丙烯树酯粘合来提高防水性，确保不发生漏电事故，适用于农业育苗托盘或大棚等含水量多的土壤里埋没使用。
附图说明
图1为本发明的结构示意图。
图2为本发明的发热片结构示意图。
具体实施方式
为了使本发明的实现技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体图示，进一步阐述本发明。
如图1、图2所示，一种组合式农用发热片，包括：发热片1、安装框5，所述发热片1镶嵌在安装框5内，发热片1的两端电极分别连接于公接线柱3和母接线柱2上，公接线柱3和母接线柱2安装固定在安装框5上，安装框5两侧设有固定带4，所述发热片1包括：线性低密度聚乙烯层、PET膜层12、电极13，所述线性低密度聚乙烯层包括线性低密度聚乙烯层Ⅰ11a、线性低密度聚乙烯层Ⅱ11b、线性低密度聚乙烯层Ⅲ11c、线性低密度聚乙烯层Ⅳ11d，所述线性低密度聚乙烯层Ⅰ11a与线性低密度聚乙烯层Ⅱ11b之间设有PET膜层12，线性低密度聚乙烯层Ⅱ11b与线性低密度聚乙烯层Ⅲ11c之间设有PET无纺布层Ⅰ14a，PET无纺布层Ⅰ14a与线性低密度聚乙烯层Ⅱ11b之间连接处镶嵌有电极13，PET无纺布层Ⅰ14a与线性低密度聚乙烯层Ⅲ11c之间设有碳黑层15，线性低密度聚乙烯层Ⅲ11c外侧设有线性低密度聚乙烯层Ⅳ11d，线性低密度聚乙烯层Ⅳ11d外侧设有屏蔽层17，线性低密度聚乙烯层Ⅳ11d与线性低密度聚乙烯层Ⅲ11c之间设有PET无纺布层Ⅱ14b。
本实施例中，所述线性低密度聚乙烯层、PET膜层12、PET无纺布层厚度为30-150μm。所述碳黑层15厚度为30-500μm。发热片发热时碳黑层发生的远红外线，促进了农作物的生长，具有增产效果。
本发明是将PVC或聚氨酯的合成树酯与导电性碳浆组成的混合物涂抹在PET无纺布层上面，形成导电性碳黑层，把电极内置在叠层体里用含有粘合剂的无纺布层安全粘合，保证了电极不发生分离现象，避免产生电火花，所以绝缘性高分子树酯涂抹层不易损坏，发热片使用寿命延长。特别强调的是，为预防发生电火花带来的漏电问题，再次使用PVC树酯或聚氨酯树酯进行外部涂抹，制作成防水层，提高了发热片的防水性，确保不发生漏电事故。因而可以在含水量多的土壤里埋没使用，如农业大棚里的育苗托盘。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明的要求保护范围由所附的权利要求书及其等效物界定。
Claims (1)
1.一种组合式农用发热片，包括：发热片、安装框，其特征在于：所述发热片镶嵌在安装框内，发热片的两端电极分别连接于公接线柱和母接线柱上，公接线柱和母接线柱安装固定在安装框上，安装框两侧设有固定带，所述发热片包括：线性低密度聚乙烯层、PET膜层、电极，所述线性低密度聚乙烯层包括线性低密度聚乙烯层Ⅰ、线性低密度聚乙烯层Ⅱ、线性低密度聚乙烯层Ⅲ、线性低密度聚乙烯层Ⅳ，所述线性低密度聚乙烯层Ⅰ与线性低密度聚乙烯层Ⅱ之间设有PET膜层，线性低密度聚乙烯层Ⅱ与线性低密度聚乙烯层Ⅲ之间设有PET无纺布层Ⅰ，PET无纺布层Ⅰ与线性低密度聚乙烯层Ⅱ之间连接处镶嵌有电极，PET无纺布层Ⅰ与线性低密度聚乙烯层Ⅲ之间设有碳黑层，线性低密度聚乙烯层Ⅲ外侧设有线性低密度聚乙烯层Ⅳ，线性低密度聚乙烯层Ⅳ外侧设有屏蔽层，线性低密度聚乙烯层Ⅳ与线性低密度聚乙烯层Ⅲ之间设有PET无纺布层Ⅱ,PET无纺布层Ⅰ上涂抹有PVC的合成树脂与导电性碳浆组成的混合物，形成导电性碳黑层，电极内置在叠层体里，用含有粘合剂的PET无纺布层Ⅰ安全粘合。
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| CN1338885A (zh) * | 2000-08-14 | 2002-03-06 | 姚雪雷 | 低温辐射碳纤维电热膜及其制备方法 |
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| CN201282572Y (zh) * | 2008-10-23 | 2009-07-29 | 梁健波 | 单面辐射型软性发热片 |
| CN201290265Y (zh) * | 2008-11-20 | 2009-08-19 | 林冠利 | 可控土壤温湿度的花盆 |
| KR101328353B1 (ko) * | 2009-02-17 | 2013-11-11 | (주)엘지하우시스 | 탄소나노튜브 발열시트 |
| CN101600270B (zh) * | 2009-07-14 | 2012-01-18 | 上海尚兰格暖芯科技有限公司 | 导电发热材料及包含该导电发热材料的地板和制造方法 |
| CN201571213U (zh) * | 2009-12-11 | 2010-09-01 | 石伟 | 一种用于地热取暖的电热组合板 |
| CN101938860A (zh) * | 2010-09-25 | 2011-01-05 | 韩奎 | 非金属发热丝及其制备方法 |
| CN103202093B (zh) * | 2010-11-08 | 2016-01-20 | 松下知识产权经营株式会社 | 面状发热体及其制造方法 |
| CN102480810A (zh) * | 2010-11-22 | 2012-05-30 | 大连创达技术交易市场有限公司 | 一种新型高分子材料电热膜 |
| CN202143232U (zh) * | 2011-07-14 | 2012-02-08 | 杭州暖洋洋科技有限公司 | 防火墙地暖的高效率碳晶发热片 |
| CN103281811B (zh) * | 2011-08-12 | 2016-03-23 | 李春学 | 高分子复合电热材料、其制备方法、以及其用途 |
| CN102368879A (zh) * | 2011-09-27 | 2012-03-07 | 栾清杨 | 土壤保温电碳纤维加热电缆 |
| CN202565850U (zh) * | 2012-04-09 | 2012-12-05 | 浙江省农业科学院 | 一种菱角育苗速生棚 |
| CN202617385U (zh) * | 2012-04-27 | 2012-12-19 | 西安盖沃热能科技有限公司 | 网格状编织ptc导电纤维电发热膜 |
| CN203000454U (zh) * | 2012-12-02 | 2013-06-19 | 张仁尔 | 一种加热地毯 |
| CN203027821U (zh) * | 2012-12-28 | 2013-07-03 | 陆建益 | 利用太阳能控温的杨梅大棚 |
| CN203136197U (zh) * | 2013-01-28 | 2013-08-14 | 苏州住邦新能源科技有限公司 | 一种多层复合碳晶发热体 |
| CN203219538U (zh) * | 2013-03-27 | 2013-09-25 | 陈军 | 发热片 |
| CN103687098A (zh) * | 2013-12-30 | 2014-03-26 | 上海神沃电子有限公司 | Ptc发热片、以及低温辐射电热膜及其制备方法 |
| CN104159339B (zh) * | 2014-08-08 | 2016-02-17 | 温岭市第二绝缘材料厂 | 一种电热膜及其生产工艺 |
| CN104411027B (zh) * | 2014-09-30 | 2016-04-06 | 温岭市第二绝缘材料厂 | 一种碳纤维发热板及其生产工艺 |
-
2015
- 2015-04-21 CN CN201810073898.3A patent/CN108260448A/zh not_active Withdrawn
- 2015-04-21 CN CN201810073387.1A patent/CN108271587A/zh not_active Withdrawn
- 2015-04-21 CN CN201810072871.2A patent/CN108271586A/zh not_active Withdrawn
- 2015-04-21 CN CN201810073890.7A patent/CN108184507A/zh not_active Withdrawn
- 2015-04-21 CN CN201510187715.7A patent/CN104823764B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108271586A (zh) | 2018-07-13 |
| CN104823764A (zh) | 2015-08-12 |
| CN108271587A (zh) | 2018-07-13 |
| CN108260448A (zh) | 2018-07-10 |
| CN108184507A (zh) | 2018-06-22 |
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