CN106313663A - 阻燃碳晶发热板及其制备方法 - Google Patents
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Abstract
本发明公开了一种阻燃碳晶发热板,包括:1)先将铜条的一端固定在第一树脂层的正面上且另一端延伸至第一树脂层的外部;2)接着将石墨碳浆涂刷于第一树脂层的正面上以形成石墨层,并且铜条的一端包覆于石墨碳浆涂内;3)将第二树脂层热压于石墨层上得到夹芯板;4)将云母纸热压于所芯板的两面,自然冷却后得到阻燃碳晶发热板。该阻燃碳晶发热板能够长时间均匀发热,耐高压、耐热性好,使用安全。
Description
技术领域
本发明涉及碳晶发热板,具体地,涉及阻燃碳晶发热板及其制备方法。
背景技术
碳晶发热板是在微晶颗粒中加入远红外发射剂以及限温剂等,以特殊工艺与制备技术制作而成。适用于家庭采暖、办公楼采暖、学校宿舍办公楼、店面采暖、集中供暖辅助采暖、棋牌室、医院、宾馆、酒店、洗浴中心、花房大棚保温、仓库保温等。
目前大多数的碳晶发热板的的壳板都是环氧树脂板,尽管树脂板具有很好耐热性能,但是在碳晶发热板长时间工作或者高电压加热时容易出现温度急增的危险情况,这就要求碳晶发热板具有很好的耐高温、阻燃性能。而云母纸不光具有很好的绝缘性能,另外云母纸可耐800℃左右的高温,可作为很好的阻燃材料。
发明内容
本发明的目的是提供一种阻燃碳晶发热板,该阻燃碳晶发热板能够长时间均匀发热,壳板的耐热性好,使用安全。
为了实现上述目的,本发明提供了一种阻燃碳晶发热板的制备方法,包括:
1)先将铜条的一端固定在第一树脂层的正面上且另一端延伸至第一树脂层的外部;
2)接着将石墨碳浆涂刷于第一树脂层的正面上以形成石墨层,并且铜条的一端包覆于石墨碳浆涂内;
3)将第二树脂层热压于石墨层上得到夹芯板;
4)将云母纸热压于所芯板的两面,自然冷却后得到阻燃碳晶发热板;
其中,石墨碳浆由导电石墨粉、玻璃粉、锌粉、松油醇、乙基纤维素和硅酸钠调配制得;相对于100重量份的导电石墨粉,玻璃粉的用量为45-60重量份,锌粉的用量为20-30重量份,松油醇的用量为15-25重量份,乙基纤维素的用量为5-10重量份,硅酸钠的用量为1-5重量份。
优选地,铜条是由焊烙铁剪裁铜箔制备而得,焊烙铁的温度为290-300℃。
优选地,步骤3)和步骤4)中的所述热压均满足:热压的温度为170-175℃,热压的时间为3-4h,热压的压力为13-14MPa。
优选地,烘干的温度为175-180℃,烘干的时间为0.3-0.8h。
优选地,第一树脂层的厚度为0.1-0.2mm。
优选地,第二树脂层的厚度为0.1-0.2mm。
优选地,云母纸的厚度为0.2-0.3mm。
优选地,石墨层的厚度为0.2-0.4mm。
本发明还提供了一种由上述制备方法制得阻燃碳晶发热板。
通过上述的技术方案,本发明通过选择云母纸和环氧树脂板复合作为碳晶发热板的壳板材料,首先将铜条规定在第一树脂板上接着涂刷石墨层,在石墨层的两面都固定树脂板层。一方面可以起到绝缘保护的作用,另一方面是利用了树脂优良的粘结性以便于提高制得阻燃碳晶发热板的安全性同时还可以提高云母纸层的热压效果,即将树脂层作为中间粘结层。
本发明的其他特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
附图是用来提供对本发明的进一步理解,并且构成说明书的一部分,与下面的具体实施方式一起用于解释本发明,但并不构成对本发明的限制。在附图中:
图1是阻燃碳晶发热板的结构示意图。
附图标记说明
1第一环氧树脂层 2石墨层
3第二环氧树脂层 3云母层
5铜条
具体实施方式
以下对本发明的具体实施方式进行详细说明。应当理解的是,此处所描述的具体实施方式仅用于说明和解释本发明,并不用于限制本发明。
以下将通过实施例对本发明进行详细描述。
制备例1
石墨碳浆的制备:将导电石墨粉、玻璃粉、锌粉、松油醇、乙基纤维素和硅酸钠按照重量配比为100:45:20:15:5:2混合调配制得。
制备例2
石墨碳浆的制备:将导电石墨粉、玻璃粉、锌粉、松油醇、乙基纤维素和硅酸钠按照重量配比为100:60:30:25:10:5混合调配制得。
实施例1
1)先将铜条5的一端固定在第一树脂层1(厚度为0.2mm)的正面上且另一端延伸至所述第一树脂层1的外部;
2)接着将石墨碳浆涂刷于所述第一树脂层1的正面上以形成石墨层4(厚度为0.2mm),并且所述铜条5的一端包覆于所述石墨碳浆涂层内;
3)将第二树脂层2(厚度为0.1mm)在13MPa的压力、170℃下热压4h,热压于石墨层4上得到夹芯板;
4)将云母纸3(厚度为0.2mm)热压于所述夹芯板的两面,自然冷却后得到阻燃碳晶发热板A1;
其中,石墨碳浆由制备例1制得。
实施例1
1)先将铜条5的一端固定在第一树脂层1(厚度为0.2mm)的正面上且另一端延伸至所述第一树脂层1的外部;
2)接着将石墨碳浆涂刷于所述第一树脂层1的正面上,在175℃下烘干0.8h以形成石墨层4(厚度为0.2mm),并且所述铜条5的一端包覆于所述石墨碳浆涂层内;
3)将第二树脂层2(厚度为0.1mm)在13MPa的压力、170℃下热压4h,热压于石墨层4上得到夹芯板;
4)将云母纸3(厚度为0.2mm)热压于所述夹芯板的两面,自然冷却后得到阻燃碳晶发热板A1;
其中,石墨碳浆由制备例1制得。
实施例2
1)先将铜条5的一端固定在第一树脂层1(厚度为0.1mm)的正面上且另一端延伸至所述第一树脂层1的外部;
2)接着将石墨碳浆涂刷于所述第一树脂层1的正面上,在180℃下烘干0.4h以形成石墨层4(厚度为0.4mm),并且所述铜条5的一端包覆于所述石墨碳浆涂层内;
3)将第二树脂层2(厚度为0.2mm)在13MPa的压力、170℃下热压4h,热压于石墨层4上得到夹芯板;
4)将云母纸3(厚度为0.3mm)热压于所述夹芯板的两面,自然冷却后得到阻燃碳晶发热板A2;
其中,石墨碳浆由制备例2制得。
实施例3
1)先将铜条5的一端固定在第一树脂层1(厚度为0.2mm)的正面上且另一端延伸至所述第一树脂层1的外部;
2)接着将石墨碳浆涂刷于所述第一树脂层1的正面上,在180℃下烘干0.4h以形成石墨层4(厚度为0.2mm),并且所述铜条5的一端包覆于所述石墨碳浆涂层内;
3)将第二树脂层2(厚度为0.2mm)在14MPa的压力、175℃下热压3h,热压于石墨层4上得到夹芯板;
4)将云母纸3(厚度为0.3mm)热压于所述夹芯板的两面,自然冷却后得到阻燃碳晶发热板A3;
其中,石墨碳浆由制备例2制得。
检测例1
通过对实施例制得的阻燃碳晶发热板A1-A3进行性能测试如下;
发热均匀度测试:A1-A3的表面极值温差小于5℃。
低温放置实验:A1-A3在-60℃下的电阻变化率均低于4%。
高温放置实验:A1-A3在150℃℃下的电阻变化率均低于4%。
耐高压测试结果:A1-A3在热电压为3760V,电流1-5mA,加热50-60s发热正常,未出现异常。
通断电实验:连续通断电5000-5500次,阻燃碳晶发热板未出现异常,温度保险丝完好,电阻变化值小于3%。
以上实验结果表明本发明提供的阻燃碳晶发热板使用安全系数高,耐高压、耐高温,发热稳定。
以上结合附图详细描述了本发明的优选实施方式,但是,本发明并不限于上述实施方式中的具体细节,在本发明的技术构思范围内,可以对本发明的技术方案进行多种简单变型,这些简单变型均属于本发明的保护范围。
另外需要说明的是,在上述具体实施方式中所描述的各个具体技术特征,在不矛盾的情况下,可以通过任何合适的方式进行组合,为了避免不必要的重复,本发明对各种可能的组合方式不再另行说明。
此外,本发明的各种不同的实施方式之间也可以进行任意组合,只要其不违背本发明的思想,其同样应当视为本发明所公开的内容。
Claims (9)
1.一种阻燃碳晶发热板的制备方法,其特征在于,所述制备方法包括:
1)先将铜条(5)的一端固定在第一树脂层(1)的正面上且另一端延伸至所述第一树脂层(1)的外部;
2)接着将石墨碳浆涂刷于所述第一树脂层(1)的正面上以形成石墨层(4),并且所述铜条(5)的一端包覆于所述石墨碳浆涂内;
3)将第二树脂层(2)热压于所述石墨层(4)上得到夹芯板;
4)将云母纸(3)热压于所述夹芯板的两面,自然冷却后得到阻燃碳晶发热板;
其中,所述石墨碳浆由导电石墨粉、玻璃粉、锌粉、松油醇、乙基纤维素和硅酸钠调配制得;相对于100重量份的导电石墨粉,所述玻璃粉的用量为45-60重量份,所述锌粉的用量为20-30重量份,所述松油醇的用量为15-25重量份,所述乙基纤维素的用量为5-10重量份,所述硅酸钠的用量为1-5重量份。
2.根据权利要求1所述的制备方法,其中,所述铜条(5)是由焊烙铁剪裁铜箔制备而得,所述焊烙铁的温度为290-300℃。
3.根据权利要求1所述的制备方法,其中,步骤3)和步骤4)中的所述热压均满足:热压的温度为170-175℃,热压的时间为3-4h,热压的压力为13-14MPa。
4.根据权利要求1所述的制备方法,其中,所述烘干的温度为175-180℃,烘干的时间为0.3-0.8h。
5.根据权利要求4所述的阻燃碳晶发热板,其中,所述第一树脂层(1)的厚度为0.1-0.2mm。
6.根据权利要求5所述的阻燃碳晶发热板,其中,所述第二树脂层(2)的厚度为0.1-0.2mm。
7.根据权利要求6所述的阻燃碳晶发热板,其中,所述云母纸(3)的厚度为0.2-0.3mm。
8.根据权利要求6所述的阻燃碳晶发热板,其中,所述石墨层(4)的厚度为0.2-0.4mm。
9.一种阻燃碳晶发热板,其特征在于,所述阻燃碳晶发热板由权利要求1-8中任意一项所述的制备方法制备而成。
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