CN105750734B - 一种电动牙刷手柄镭雕加工工艺 - Google Patents

一种电动牙刷手柄镭雕加工工艺 Download PDF

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CN105750734B
CN105750734B CN201610259317.6A CN201610259317A CN105750734B CN 105750734 B CN105750734 B CN 105750734B CN 201610259317 A CN201610259317 A CN 201610259317A CN 105750734 B CN105750734 B CN 105750734B
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严佑春
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Guangdong Luoman Intelligent Technology Co Ltd
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Abstract

本发明涉及电动牙刷技术领域,具体涉及一种电动牙刷手柄镭雕加工工艺,包括如下步骤:(1)注塑:在手柄光源区域上注塑树脂层,所述树脂层为透明体或半透明白色体;(2)电镀:在所述树脂层上真空电镀金属层或金属氧化物层;(3)镭雕:利用激光镭雕将金属层或金属氧化物层镂空出所需形状;(4)喷涂:在金属层或金属氧化物层上喷涂光油,然后固化。本发明制备出的产品在外观上,摒弃过往指示灯的简陋模式,增强的电动牙刷手柄指示面板的金属质感、细腻感、光透感和科技感;在工艺上大胆创新,结合真空电镀和镭雕技术,加工出树脂层‑金属层或金属氧化物层‑光油层结构产品,步骤简单,且镭雕技术使加工样式多变,可满足不同的生产需求。

Description

一种电动牙刷手柄镭雕加工工艺
技术领域
本发明涉及电动牙刷技术领域,具体涉及一种电动牙刷手柄镭雕加工工艺。
背景技术
现有技术中,因为电动牙刷有多种模式,为了方便使用者,一般电动牙刷都会在手柄上设置指示面板,现有的电动牙刷手柄一般设置为简单的指示灯模式,直接在塑料手柄上设置出几个孔洞放入LED灯珠并填充透明物质,然后在灯孔下标注文字,让消费者感觉粗制滥造,难登大雅之堂,为了提高电动牙刷的外观性,急需从根本上,对电动牙刷手柄指示面板的加工工艺进行改进。
发明内容
本发明的目的是针对现有技术中的上述不足,提供一种结合镭雕工艺、能大大提升产品美观的电动牙刷手柄镭雕加工工艺。
本发明的目的通过以下技术方案实现:
一种电动牙刷手柄镭雕加工工艺,包括如下步骤:
(1)、注塑:在手柄壳体上注塑树脂层,所述树脂层为透明体或半透明白色体,所述手柄壳体内设有用于照射树脂层的光源;
(2)、电镀:在所述树脂层上真空电镀金属层或金属氧化物层;
(3)、镭雕:利用激光镭雕将金属层或金属氧化物层镂空出所需形状;
(4)、喷涂:在金属层或金属氧化物层上喷涂光油,然后固化。
第一步注塑树脂层作为加工基层,能够有效保护手柄光源,防止后续的镭雕对光源等电动牙刷内部元件造成不必要的损坏;第二步电镀金属层或金属氧化物层可以作为光源的遮光层,金属质感强,且金属层或金属氧化物层致密的特性可以防止牙刷手柄不需要出光的区域发生局部漏光现象;第三步镭雕可以将金属层或金属氧化物层镂空出中文、字母、logo 等图形,镭雕出的图形细腻,可以凸显电动牙刷的科技感;第四步喷涂光油可以填补镭雕造成的凹坑,使手柄趋于圆滑,也可以作为一层手感油,增加电动牙刷手柄对于手的附着力,提高手感,更可以避免金属层或金属氧化物层与外界直接接触发生磨损,或与人手直接接触造成冰冷的触感。本发明通过注塑-电镀-镭雕-喷涂四个步骤实现电动牙刷手柄指示面板的金属质感、细腻感、优良手感、科技感,摒弃过往容易漏水、防水等级低的指示灯孔模式,且激光镭雕可变性高,可满足各种电动牙刷的加工需求,当驱动手柄光源时,从牙刷手柄的外部即可呈现出镭雕出的图案,可指示提醒用户选择不同图形对应的不同功能模式的切换选择,使用便利性高。
其中,所述步骤(1)的树脂层为ABS树脂、PC树脂中的一种或两种。更近一步地,所述树脂层由60-70%的PC树脂和30-40%的ABS树脂组成。
ABS树脂具有高强度、低重量的特点,但不完全透明,而PC树脂具有耐热、抗冲击、阻燃等特性,但耐磨性低,考虑不同的加工需求选用树脂,通过不断的试验调整,60- 70%的PC树脂和30-40%的ABS树脂组成的树脂层弹性高、机械强度高、透明度高、减噪功能优良,是作为电动牙刷手柄的优选配比方案。
其中,所述步骤(1)注塑压力为70-130Mpa,保压温度为170-330℃,保压时间为10s-60s,冷却温度为20-30℃,冷却时间为5-50s。注塑压力温度、控温时间的设置会影响树脂层的尺寸、重量、均匀性,设置不当易造成树脂层的变形、表面出现流痕等缺陷。
其中,所述步骤(2)金属层或金属氧化物层为锡层,所述锡层的厚度为5-10μm。锡层的光亮度高,金属质感强,通过控制锡层的厚度,可以使锡层带有一定的光透性,使牙刷手柄的光感更加绚丽。
其中,所述步骤(2)电镀的蒸发温度为1000-1500℃,气压为0.01-0.03Pa。蒸发温度、气压为控制金属层或金属氧化物层致密度、纯度、沉积速率、附着力等的重要参数,蒸发温度低于1000℃,则沉积太慢,镀膜效果太差,温度高于1500℃,则损耗能能量太多,增加成本;气压低于0.01Pa,则需要的设备成本过高,气压高于0.03Pa,则镀膜容易混入杂质或金属发生氧化,镀膜效果差。
其中,所述步骤(3)激光镭雕的镭雕速度为500-1500mm/s,镭雕功率为10-60W。镭雕速度高于1500mm/s容易雕刻不均导致透光度不一致,影响透光效果,低于500mm/s工作效率太低,不便于生产;镭雕功率会影响雕刻的深度、均度、速度等,且激光镭雕会导致发热,考虑各材料层的耐热性,镭雕功率设置在10-60W为优选方案。
其中,所述步骤(4)的光油为水性UV光油,所述水性UV光油由以下重量份数的原料组成:
预聚物 30-50份
单体 30-90份
光引发剂 4-6份
耐划伤助剂 1-2份
有机硅改性流平剂 1-2份
硅烷偶联剂 1-2份
溶剂 10-20份
其中,所述预聚物为水性聚氨酯丙烯酸酯低聚物与水性环氧丙烯酸酯低聚物的至少一种,所述单体为TPGDA、EOEOEA、PO3-TMPTA、PEGDA的至少两种,所述光引发剂为光引发剂184、907、1173的至少两种,所述耐划伤助剂为有机蜡、聚乙烯微粉的至少一种,所述溶剂为水与乙醇以任意比例混合的混合物。
本发明的光油为水性UV光油,具有耐刮擦性,附着力强,对人体毒性极小,为本发明工艺制备出来的电动牙刷手柄光油的优选方案。本配方预聚物决定了光油固化后的主要性质,单体起到的主要作用是调节本配方体系的粘度,对光油性质进行调整,预聚物与单体需要进行一定的比例限定才能更好地强化本配方光油的附着力,同时加入耐划伤助剂增强了光油的耐刮擦性,防止指甲等尖锐物在光油下留下划痕等缺陷。
更进一步地,所述预聚物由水性聚氨酯丙烯酸酯低聚物与水性环氧丙烯酸酯低聚物按重量比1-3:1的比例混合而成,所述单体由TPGDA、PO3-TMPTA和PEGDA按重量比 2:3:1的比例混合而成,所述单体与预聚物的重量比为1.5:1,所述光引发剂由光引发剂 184、907、1173按重量比1:1:1的比例混合而成,所述溶剂由水和乙醇按重量比1:1的比例混合组成。
水性聚氨酯丙烯酸酯低聚物相对水性环氧丙烯酸酯低聚物固化后的光油层具有更好的柔韧性、耐磨性、耐水性,但环氧树脂的固化能力更强,结合两者的优势以及电动牙刷手柄的需求,对预聚物的选用作出的优选混合比例为1-3:1,更为优选的比例为2:1;TPGDA 与PO3-TMPTA含有丙氧基,增加固化后光油的柔韧性,PO3-TMPTA固化能力强,TPGDA对于粘度的调整效果好,而PEGDA具有良好的亲水性,经过不断的试验调整,得到了 TPGDA、PO3-TMPTA和PEGDA按重量比2:3:1的比例混合的优选混合方案,使本配方的光油具有更优异的性能;而不同的光引发剂对于紫外光具有不同波长的吸收强弱,由于紫外光灯的输出能量容易受温度的影响,因此光引发剂184、907、1173按重量比1:1:1的比例混合而成光引发剂对于一定范围波长的紫外灯都有良好的吸收能力;而在水中加入适量的乙醇可以促进预聚物和单体等的溶解,但乙醇加入过多由于其挥发性而难以控制,因此水与乙醇的混合优选比例为1:1。
其中,所述步骤(4)固化温度为50-80℃,固化时间为0.3-0.7h。
固化温度、固化时间会影响光油原料的交联程度,温度过低或过高都容易产生副反应导致不良效果,需要对固化温度、固化时间做出合理的控制。
其中,所述步骤(3)之前还包括步骤S1、喷涂底漆:在所述树脂层上喷涂一层透明真空镀膜油,所述底漆厚度为5-10μm,烘干温度为50-80℃,时间为30-60min。
真空镀膜油对于金属的附着力更强,有利于后续步骤(3)电镀的进行,提升了整体的金属质感。
其中,所述步骤(4)之前还包括如下步骤:S2、清洁:用去污剂和水对所述金属层或金属氧化物层进行清洗,烘干,然后采用静电除尘枪对所述金属层或金属氧化物层进行除静电、除尘处理。
对所述金属层或金属氧化物层进行清洗避免杂质造成光油的附着不均,且若杂质过多,容易对金属层或金属氧化物的侵蚀,降低产品的外观保质质量。
本发明的有益效果:1、外观上,摒弃过往指示灯的简陋模式,增强的电动牙刷手柄指示面板的金属质感、细腻感、光透感和科技感;2、工艺上大胆创新,结合真空电镀和镭雕技术,对于树脂层-金属层或金属氧化物层-光油层三层材料进行加工,步骤简单,且镭雕技术使加工样式多变,可满足不同的生产需求,同时镭雕出的形状光显效果更加清晰;3、光油配方上精益求精,针对电动牙刷手柄的特殊需求,作出具有高柔韧性、耐刮擦、新的光油配方;4、本发明镭雕技术与光油创新的结合,使显像的光凝而不散,镭雕雕刻出的图形清晰度极高。
具体实施方式
结合以下实施例对本发明作进一步描述。
实施例1
本实施例的电动牙刷手柄镭雕加工工艺,包括如下步骤:
(1)、注塑:在手柄光源区域上注塑树脂层,所述树脂层为半透明白色体,所述树脂层为 ABS树脂,注塑压力为70Mpa,保压温度为330℃,保压时间为10s,冷却温度为20℃,冷却时间为50s;
(2)、电镀:在所述树脂层上真空电镀金属层或金属氧化物层,所述金属层或金属氧化物层为锡层,所述锡层的厚度为5μm,电镀的蒸发温度为1000℃,气压为0.01Pa;
(3)、镭雕:利用激光镭雕将金属层或金属氧化物层镂空出所需形状,激光镭雕的镭雕速度为500mm/s,镭雕功率为10W;
(4)、喷涂:在金属层或金属氧化物层上喷涂光油,然后固化,固化温度为50℃,固化时间为0.7h。
实施例2
本实施例的电动牙刷手柄镭雕加工工艺,包括如下步骤:
(1)、注塑:在手柄光源区域上注塑树脂层,所述树脂层为透明体,所述树脂层为PC树脂,注塑压力为130Mpa,保压温度为170℃,保压时间为60s,冷却温度为30℃,冷却时间为5s;
(2)、电镀:在所述树脂层上真空电镀金属层或金属氧化物层,所述金属层或金属氧化物层为锡层,所述锡层的厚度为10μm,电镀的蒸发温度为1500℃,气压为0.03Pa;
(S1)、喷涂底漆:在所述树脂层上喷涂一层透明真空镀膜油,所述底漆厚度为5μm,烘干温度为50℃,时间为60min;
(S2)、清洁:用去污剂和水对所述金属层或金属氧化物层进行清洗,烘干,然后采用静电除尘枪对所述金属层或金属氧化物层进行除静电、除尘处理;
(3)、镭雕:利用激光镭雕将金属层或金属氧化物层镂空出所需形状,激光镭雕的镭雕速度为1500mm/s,镭雕功率为60W;
(4)、喷涂:在金属层或金属氧化物层上喷涂光油,然后固化,固化温度为80℃,固化时间为0.3h。
实施例3
本实施例的电动牙刷手柄镭雕加工工艺,包括如下步骤:
(1)、注塑:在手柄光源区域上注塑树脂层,所述树脂层为半透明白色体,所述树脂层由 60%的PC树脂和40%的ABS树脂组成,注塑压力为85Mpa,保压温度为200℃,保压时间为50s,冷却温度为25℃,冷却时间为23s;
(2)、电镀:在所述树脂层上真空电镀金属层或金属氧化物层,所述金属层或金属氧化物层为锡层,所述锡层的厚度为7.5μm,电镀的蒸发温度为1250℃,气压为0.02Pa;
(S1)、喷涂底漆:在所述树脂层上喷涂一层透明真空镀膜油,所述底漆厚度为10μm,烘干温度为80℃,时间为60min;
(S2)、清洁:用去污剂和水对所述金属层或金属氧化物层进行清洗,烘干,然后采用静电除尘枪对所述金属层或金属氧化物层进行除静电、除尘处理;
(3)、镭雕:利用激光镭雕将金属层或金属氧化物层镂空出所需形状,激光镭雕的镭雕速度为1000mm/s,镭雕功率为35W;
(4)、喷涂:在金属层或金属氧化物层上喷涂光油,然后固化,固化温度为65℃,固化时间为0.5h。
其中,所述步骤(4)的光油为水性UV光油,所述水性UV光油由以下重量份数的原料组成:
预聚物 40份
单体 60份
光引发剂 5份
耐划伤助剂 1.5份
有机硅改性流平剂 1.5份
硅烷偶联剂 1.5份
溶剂 15份
所述预聚物由水性聚氨酯丙烯酸酯低聚物与水性环氧丙烯酸酯低聚物按重量比2:1的比例混合而成,所述单体由TPGDA、PO3-TMPTA和PEGDA按重量比2:3:1的比例混合而成,所述光引发剂由光引发剂184、907、1173按重量比1:1:1的比例混合而成,所述耐划伤助剂为有机蜡,所述溶剂由水和乙醇按重量比1:1的比例混合组成。
实施例4
本实施例的电动牙刷手柄镭雕加工工艺,包括如下步骤:
(1)、注塑:在手柄光源区域上注塑树脂层,所述树脂层为半透明白色体,所述树脂层由 70%的PC树脂和30%的ABS树脂组成,注塑压力为100Mpa,保压温度为250℃,保压时间为50s,冷却温度为28℃,冷却时间为40s;
(2)、电镀:在所述树脂层上真空电镀金属层或金属氧化物层,所述金属层或金属氧化物层为锡层,所述锡层的厚度为8μm,电镀的蒸发温度为1100℃,气压为0.015Pa;
(3)、镭雕:利用激光镭雕将金属层或金属氧化物层镂空出所需形状,激光镭雕的镭雕速度为800mm/s,镭雕功率为30W;
(4)、喷涂:在金属层或金属氧化物层上喷涂光油,然后固化,固化温度为60℃,固化时间为0.6h。
其中,所述步骤(4)的光油为水性UV光油,所述水性UV光油由以下重量份数的原料组成:
预聚物 50份
单体 50份
光引发剂 4份
耐划伤助剂 1份
有机硅改性流平剂 1份
硅烷偶联剂 1份
溶剂 10份
其中,所述预聚物为水性聚氨酯丙烯酸酯低聚物,所述单体由TPGDA、EOEOEA按重量比 3:1的比例混合而成,所述光引发剂由光引发剂184、907按重量比2:1的比例混合而成,所述耐划伤助剂为聚乙烯微粉,所述溶剂为水。
实施例5
本实施例的电动牙刷手柄镭雕加工工艺,包括如下步骤:
(1)、注塑:在手柄光源区域上注塑树脂层,所述树脂层为半透明白色体,所述树脂层由 50%的ABS树脂和50%的PC树脂组成,注塑压力为120Mpa,保压温度为300℃,保压时间为20s,冷却温度为22℃,冷却时间为10s;
(2)、电镀:在所述树脂层上真空电镀金属层或金属氧化物层,所述金属层或金属氧化物层为锡层,所述锡层的厚度为6μm,电镀的蒸发温度为1400℃,气压为0.025Pa;
(3)、镭雕:利用激光镭雕将金属层或金属氧化物层镂空出所需形状,激光镭雕的镭雕速度为1400mm/s,镭雕功率为55W;
(4)、喷涂:在金属层或金属氧化物层上喷涂光油,然后固化,固化温度为70℃,固化时间为0.4h。
其中,所述步骤(4)的光油为水性UV光油,所述水性UV光油由以下重量份数的原料组成:
预聚物 30份
单体 30份
光引发剂 6份
耐划伤助剂 2份
有机硅改性流平剂 2份
硅烷偶联剂 2份
溶剂 20份
其中,所述预聚物为水性环氧丙烯酸酯低聚物,所述单体由PO3-TMPTA、PEGDA按重量比1:2的比例混合而成,所述光引发剂由光引发剂907、1173按重量比1:2的比例混合而成,所述耐划伤助剂由有机蜡、聚乙烯微粉按重量比1:1的比例混合而成,所述溶剂由水与乙醇按重量比7:3的比例混合而成。
实施例6
本实施例的电动牙刷手柄镭雕加工工艺,包括如下步骤:
(1)、注塑:在手柄光源区域上注塑树脂层,所述树脂层为半透明白色体,所述树脂层由 80%的PC树脂和20%的ABS树脂混合而成,注塑压力为80Mpa,保压温度为190℃,保压时间为45s,冷却温度为21℃,冷却时间为15s;
(2)、电镀:在所述树脂层上真空电镀金属层或金属氧化物层,所述金属层或金属氧化物层为锡层,所述锡层的厚度为9μm,电镀的蒸发温度为1300℃,气压为0.02Pa;
(3)、镭雕:利用激光镭雕将金属层或金属氧化物层镂空出所需形状,激光镭雕的镭雕速度为850mm/s,镭雕功率为45W;
(4)、喷涂:在金属层或金属氧化物层上喷涂光油,然后固化,固化温度为65℃,固化时间为0.5h。
其中,所述步骤(4)的光油为水性UV光油,所述水性UV光油由以下重量份数的原料组成:
预聚物 40份
单体 80份
光引发剂 4.5份
耐划伤助剂 1.8份
有机硅改性流平剂 1.2份
硅烷偶联剂 1.6份
溶剂 17份
其中,所述预聚物由水性聚氨酯丙烯酸酯低聚物与水性环氧丙烯酸酯低聚物按重量比1:1的比例混合而成,所述单体由TPGDA、EOEOEA、PEGDA按重量比3:2:1的比例混合而成,所述光引发剂为光引发剂184、907、1173按重量比1:2:1的比例混合而成,所述耐划伤助剂由有机蜡、聚乙烯微粉按重量比4:6的比例混合而成,所述溶剂由水与乙醇按重量比3:7的比例混合而成。
实施例7
本实施例的电动牙刷手柄镭雕加工工艺,包括如下步骤:
(1)、注塑:在手柄光源区域上注塑树脂层,所述树脂层为半透明白色体,所述树脂层为 ABS树脂,注塑压力为115Mpa,保压温度为275℃,保压时间为35s,冷却温度为24℃,冷却时间为32s;
(2)、电镀:在所述树脂层上真空电镀金属层或金属氧化物层,所述金属层或金属氧化物层为锡层,所述锡层的厚度为5.5μm,电镀的蒸发温度为1150℃,气压为0.01Pa;
(3)、镭雕:利用激光镭雕将金属层或金属氧化物层镂空出所需形状,激光镭雕的镭雕速度为1350mm/s,镭雕功率为48W;
(4)、喷涂:在金属层或金属氧化物层上喷涂光油,然后固化,固化温度为77℃,固化时间为0.65h。
其中,所述步骤(4)的光油为水性UV光油,所述水性UV光油由以下重量份数的原料组成:
预聚物 35份
单体 75份
光引发剂 4.5份
耐划伤助剂 1.2份
有机硅改性流平剂 1.6份
硅烷偶联剂 1.9份
溶剂 18份
其中,所述预聚物由水性聚氨酯丙烯酸酯低聚物与水性环氧丙烯酸酯低聚物按重量比3:1的比例混合而成,所述单体由EOEOEA、PO3-TMPTA、PEGDA按重量比2:2:1的比例混合而成,所述光引发剂为光引发剂184、1173按4:1的比例混合而成,所述耐划伤助剂为有机蜡,所述溶剂由水与乙醇按重量比6:5的比例混合而成。
实施例8
本实施例的电动牙刷手柄镭雕加工工艺,包括如下步骤:
(1)、注塑:在手柄光源区域上注塑树脂层,所述树脂层为半透明白色体,所述树脂层为 ABS树脂,注塑压力为105Mpa,保压温度为225℃,保压时间为25s,冷却温度为26℃,冷却时间为38s;
(2)、电镀:在所述树脂层上真空电镀金属层或金属氧化物层,所述金属层或金属氧化物层为锡层,所述锡层的厚度为7.7μm,电镀的蒸发温度为1330℃,气压为0.03Pa;
(3)、镭雕:利用激光镭雕将金属层或金属氧化物层镂空出所需形状,激光镭雕的镭雕速度为900mm/s,镭雕功率为30W;
(4)、喷涂:在金属层或金属氧化物层上喷涂光油,然后固化,固化温度为78℃,固化时间为0.45h。
其中,所述步骤(4)的光油为水性UV光油,所述水性UV光油由以下重量份数的原料组成:
预聚物 45份
单体 40份
光引发剂 5.8份
耐划伤助剂 1.7份
有机硅改性流平剂 1.3份
硅烷偶联剂 1.4份
溶剂 12份
其中,所述预聚物由水性聚氨酯丙烯酸酯低聚物与水性环氧丙烯酸酯低聚物按重量比1:2的比例混合而成,所述单体由TPGDA、EOEOEA、PO3-TMPTA、PEGDA按重量比1:1:1:1的比例混合而成,所述光引发剂由光引发剂184、907、1173按重量比1:2:1的比例混合而成,所述耐划伤助剂由有机蜡、聚乙烯微粉按重量比2:3的比例混合而成,所述溶剂由水与乙醇按重量比8:3的比例混合而成。
最后应当说明的是,以上实施例仅用以说明本发明的技术方案,而非对本发明保护范围的限制,尽管参照较佳实施例对本发明作了详细地说明,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。

Claims (5)

1.一种电动牙刷手柄镭雕加工工艺,其特征在于:包括如下步骤:
(1)、注塑:在手柄壳体上注塑树脂层,所述树脂层为透明体或半透明白色体,所述手柄壳体内设有用于照射树脂层的光源;
(2)、电镀:在所述树脂层上真空电镀金属层或金属氧化物层;
(3)、镭雕:利用激光镭雕将金属层或金属氧化物层镂空出所需形状;
(4)、喷涂:在金属层或金属氧化物层上喷涂光油,然后固化;
所述步骤(2)金属层或金属氧化物层为锡层,所述锡层的厚度为5-10μm;
所述步骤(2)电镀的蒸发温度为1000-1500℃,气压为0.01-0.03Pa;
所述步骤(3)镭雕的镭雕速度为500-1500mm/s,镭雕功率为10-60W
所述步骤(4)的光油为水性UV光油,所述水性UV光油由以下重量份数的原料组成:
预聚物 30-50份
单体 30-90份
光引发剂 4-6份
耐划伤助剂 1-2份
有机硅改性流平剂 1-2份
硅烷偶联剂 1-2份
溶剂 10-20份;
所述预聚物由水性聚氨酯丙烯酸酯低聚物与水性环氧丙烯酸酯低聚物按重量比1-3:1的比例混合而成,所述单体为TPGDA、EOEOEA、PO3-TMPTA、PEGDA的至少两种,所述光引发剂为光引发剂184、907、1173的至少两种,所述耐划伤助剂为有机蜡、聚乙烯微粉的至少一种,所述溶剂为水与乙醇以任意比例混合的混合物。
2.根据权利要求1所述的一种电动牙刷手柄镭雕加工工艺,其特征在于:所述步骤(1)的树脂层为ABS树脂、PC树脂中的一种或两种。
3.根据权利要求1所述的一种电动牙刷手柄镭雕加工工艺,其特征在于:所述步骤(1)注塑压力为70-130Mpa,保压温度为170-330℃,保压时间为10s-60s,冷却温度为20-30℃,冷却时间为5-50s。
4.根据权利要求1所述的一种电动牙刷手柄镭雕加工工艺,其特征在于:所述步骤(3)之前还包括步骤S1、喷涂底漆:在所述树脂层上喷涂一层透明真空镀膜油,所述底漆厚度为5-10μm,烘干温度为50-80℃,时间为30-60min。
5.根据权利要求1所述的一种电动牙刷手柄镭雕加工工艺,其特征在于:所述步骤(4)之前还包括如下步骤:S2、清洁:用去污剂和水对所述金属层或金属氧化物层进行清洗,烘干,然后采用静电除尘枪对所述金属层或金属氧化物层进行除静电、除尘处理。
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