CN112226008B - 一种可形成白色镭雕图纹的组合物 - Google Patents
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Abstract
本发明涉及一种可形成白色镭雕图纹的组合物,所述组合物组分包括:聚合物、增韧剂、纳米填料、发泡剂、打标剂。本发明中使用这种材料得到的白色镭雕标识具有优异的抗光照老化的性能,大大提高白色标识的颜色持久性。
Description
技术领域
本发明属于塑胶镭雕用材料领域,特别涉及一种可形成白色镭雕图纹的组合物。
背景技术
ABS和HIPS塑料具有原料来源广,易于成型加工及冲击性能优良等特点,被广泛应用于大尺寸家用电器外壳。而随着社会经济发展,环保在人们的意识中重要程度越来越高,一些用于在塑胶产品表面进行各种图形和标记的纹理修饰,例如丝印、喷漆、电镀等等被激光镭雕替代。激光镭雕由于无环境污染、非接触式加工、易于自动化等好处在塑胶产品的美观中承担越来越重要的角色。然而,由于ABS和HIPS结构上含有双键,在ABS和HIPS塑胶产品表面镭雕的白色标记经过一段时间使用后容易受光照变黄,颜色发生变化,严重影响美观。针对上述问题,为了解决ABS和HIPS白色镭雕图纹的光照老化问题,本发明提供一种可形成白色镭雕图纹的组合物。
CN105131564A公开了健身器材包胶层LOGO的制作方法、包胶材料及激光雕刻设备,组分中含有耐候剂改善耐候性,但是白色标识是通过塑胶发泡显示的颜色,白色标记由于其特殊性,耐候剂无法改善其光照黄变问题,目前也鲜有报道改善白色镭雕标记的相关报道。
发明内容
本发明所要解决的技术问题是提供一种可形成白色镭雕图纹的组合物,克服现有ABS和HIPS白色镭雕图纹光照老化的技术缺陷。
本发明提供一种可形成白色镭雕图纹的组合物,按重量份数,原料组分包括:
进一步,按重量份数,原料组分包括:
所述聚合物为苯乙烯-丙烯腈共聚物或聚苯乙烯。
所述增韧剂的粒径为2-50微米。
所述增韧剂为苯乙烯-丁二烯-丙烯腈共聚物或苯乙烯-丁二烯共聚物。
所述纳米填料为二维片层纳米填料,粒径为0.5-2微米。
所述纳米填料为蒙脱土、层状双氢氧化物、氧化钛、云母、石墨烯、氮化硼、锂藻土中的一种或几种。
所述发泡剂为三肼基三嗪、4,4'氧代双苯磺酰氨基脲、对甲苯磺酰氨基脲中的一种或几种;所述打标剂为乙炔炭黑和/或多孔氧化锑。
本发明的一种白色镭雕图纹制备方法,包括:
按重量份数,将聚合物100份,增韧剂20~50份,纳米填料1-5份,发泡剂1-5,打标剂0.1~3份放入转速约为100转/分钟的混合器中干混3-5分钟,然后将混合的原料在温度180℃~220℃,转速300~500转/分钟的双螺杆挤出机熔融挤出造粒,粒子在约200℃注塑成型为产品,再采用大族激光EP-12型号激光打标机,在电流为20A,打标速度1000mm/s,频率17KH/Z条件下,进行激光打标,得到白色镭雕图纹。
本发明的一种所述白色镭雕图纹的应用。
本发明中在ABS或者HIPS黑色基材表面进行白色激光镭雕时,聚合物和纳米填料受汽化作用迁移到表面形成气泡,呈现白色标识,同时由于纳米填料具有二维片层结构,纳米填料受汽化作用会迁移并平行于气泡表面,有效阻挡太阳光,从而大大改善了白色标识的抗光照黄变性能。
有益效果
(1)本发明的组合物经济环保,性价比高,在不用外加耐候剂的情况下,可以达到良好的耐候效果;
(2)本发明的组合物通过激光镭雕出的白色标识,白色标识不容易变色,具有优越的抗光照黄变的性能,提高白色镭雕标识的使用寿命;
(3)本发明提供一种可形成白色镭雕图纹的组合物,使用这种材料制备的白色镭雕图纹具有更好的颜色持久性,大大改善其光照老化性能。
具体实施方式
下面结合具体实施例,进一步阐述本发明。应理解,这些实施例仅用于说明本发明而不用于限制本发明的范围。此外应理解,在阅读了本发明讲授的内容之后,本领域技术人员可以对本发明作各种改动或修改,这些等价形式同样落于本申请所附权利要求书所限定的范围。
(1)测试标准和方法
氙灯老化测试:按照GB/T 16422.2-2014,方法A循环2进行氙灯老化试验,测量白色标识b值来表征黄变结果。
拉伸性能测试按ISO527进行,试样尺寸为150×10×4mm,拉伸速度为50mm/min;弯曲性能测试按ISO178进行,试样尺寸为80×10×4mm,弯曲速度为2mm/min,跨距为64mm;悬臂梁缺口冲击强度按照ISO180进行,试样尺寸为80×10×4mm;缺口深度为2mm。
(2)组分来源:
A.聚合物:
A-1:苯乙烯-丙烯腈共聚物,SAN-2437,中石油吉化;
A-2:聚苯乙烯,GPPS 123P,上海赛科;
B.增韧剂:
B-1:苯乙烯-丁二烯-丙烯腈共聚物:高胶粉POWER,粒径5微米,连续本体法合成过程产物,上海华谊聚合物;
B-2:苯乙烯-丁二烯共聚物,HIPS-POWER,粒径2微米,连续本体法合成过程产物,上海赛科;
C.纳米填料:
C-1:蒙脱土:改性蒙脱土,I.30P,粒径0.5-2微米、粒径10微米,美国Nanocor;
C-2:层状双氢氧化物,LDH-B,粒径0.6微米,江西宏远化工有限公司;
C-3:石墨烯,JCG-1,粒径0.5~2微米,南京吉仓纳米科技有限公司;
C-4:氮化硼:纳米氮化硼粉,粒径0.6-2微米,上海超威纳米科技有限公司;
D.发泡剂:
D-1:三肼基三嗪,淮南市科迪化工科技有限公司;
D-2:4,4'氧代双苯磺酰氨基脲,湖北万得化工有限公司;
E.打标剂:
E-1:乙炔炭黑,DENKA BLACK,日本电气化学工业株式会社;
E-2:多孔氧化锑:改性氧化锑ATO,Keeling&Walker公司;
实施例1~8
组合物中的原料组分及重量份数具体参见表1。
制备方法为:将原料按表1所示的重量份数放入转速约为100转/分钟的混合器中干混3-5分钟,然后将混合的原料在长径比为40:1,温度区间在160℃、190℃、190℃、200℃、210℃、210℃、210℃、220℃、220℃、220℃、220℃,转速450转/分钟的双螺杆挤出机熔融挤出造粒,得到塑胶粒子,粒子在约200℃注塑成尺寸为100*100*3mm方板,再采用大族激光EP-12型号激光打标机,在电流为20A,打标速度1000mm/s,频率17KH/Z条件下,进行激光达打标,得到白色镭雕图纹。
对比例1-5
原料组分及重量份数具体参见表1具体制备方法同上述实施例。
表1 实施例1-8和对比例1-5中原料的组分及重量份数
从实施例1-8的氙灯老化测试结果可以看出,在本发明组合物均能达到良好的抗光照变黄的性能效果。
通过实施例2和对比例1,实施例5和对比例2比较,可以看出不采用片层填料和发泡剂,只采用增韧剂材料,白色镭雕标识在200h氙灯老化后b值从8提高到25(对比例1)和7提高到23(对比例2),发生严重黄变,本发明中使用的片层纳米填料和发泡剂有效提高了白色镭雕标识的抗光照老化性能。
通过实施例2、对比例3和对比例4比较可以看出,单纯只采用片层填料或者发泡剂,达不到抗光照老化的效果,本发明中采用片层填料和发泡剂的材料共同作用达到抗光照变黄,并且使得颜色持久性更强的效果。
实施例2采用的是0.5-2微米的片层填料,对比例5采用的是10微米的片层填料,对比例5的白色标识在200h氙灯老化后b值从7提高到22,发生严重黄变。通过实施例2和对比例5比较可以看出,本发明中采用的片层填料粒径过大时无法迁移到表面,无法阻挡太阳光。注:实施例1-3,实施例7-8,对比例3,采用的C-1的粒径均为0.5-2微米,对比例5中C-1的粒径为10μm。
本发明采用片层填料和发泡剂的材料,白色标识在200h氙灯老化后,前后Δb差值均在4以下,表现出良好的抗光照变黄的性能,具有更高的颜色持久性。
对实施例1-8和对比例1-5进行材料机械性能测试,结果如表2所示。
表2 实施例1-8和对比例1-5材料机械性能测试表
Claims (8)
1.一种可形成白色镭雕图纹的组合物,其特征在于,按重量份数,原料组分包括:
聚合物 100份,
增韧剂 20~50份,
纳米填料 1-5份,
发泡剂 1-5份,
打标剂 0.1~3份;
其中所述纳米填料为二维片层纳米填料,粒径为0.5-2微米;所述纳米填料为蒙脱土、层状双氢氧化物、氧化钛、云母、石墨烯、氮化硼、锂藻土中的一种或几种;所述发泡剂为三肼基三嗪、4,4'氧代双苯磺酰氨基脲、对甲苯磺酰氨基脲中的一种或几种。
2.根据权利要求1所述组合物,其特征在于,按重量份数,原料组分包括:
聚合物 100份,
增韧剂 20~50份,
纳米填料 1-5份,
发泡剂 3-5份,
打标剂 0.1~3份。
3.根据权利要求1所述组合物,其特征在于,所述聚合物为苯乙烯-丙烯腈共聚物或聚苯乙烯;所述打标剂为乙炔炭黑和/或多孔氧化锑。
4.根据权利要求1所述组合物,其特征在于,所述增韧剂的粒径为2-50微米。
5.根据权利要求1所述组合物,其特征在于,所述增韧剂为苯乙烯-丁二烯-丙烯腈共聚物或苯乙烯-丁二烯共聚物。
6.一种基于权利要求1所述组合物的白色镭雕图纹。
7.一种权利要求6所述白色镭雕图纹制备方法,包括:
按重量份数,将聚合物100份,增韧剂20~50份,纳米填料1-5份,发泡剂1-5,打标剂0.1~3份进行预混合,然后熔融挤出造粒,得到塑胶粒子,成型,激光打标,得到白色镭雕图纹。
8.一种权利要求6所述白色镭雕图纹的应用。
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