CN114231054A - 聚碳酸酯专用型钛白粉及其制备方法 - Google Patents
聚碳酸酯专用型钛白粉及其制备方法 Download PDFInfo
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 63
- 239000004417 polycarbonate Substances 0.000 title claims abstract description 45
- 229920000515 polycarbonate Polymers 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 31
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 claims abstract description 19
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims abstract description 19
- 239000005049 silicon tetrachloride Substances 0.000 claims abstract description 19
- 239000005416 organic matter Substances 0.000 claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 13
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 13
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 230000001590 oxidative effect Effects 0.000 claims abstract description 3
- -1 polysiloxane Polymers 0.000 claims description 10
- 229920001296 polysiloxane Polymers 0.000 claims description 10
- 239000000376 reactant Substances 0.000 claims description 10
- 229920005552 sodium lignosulfonate Polymers 0.000 claims description 5
- 238000005660 chlorination reaction Methods 0.000 claims description 4
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 4
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 4
- 239000000463 material Substances 0.000 claims 1
- 238000005469 granulation Methods 0.000 abstract description 14
- 230000003179 granulation Effects 0.000 abstract description 14
- 235000010215 titanium dioxide Nutrition 0.000 description 45
- 239000000047 product Substances 0.000 description 22
- 230000003647 oxidation Effects 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 10
- 229920005749 polyurethane resin Polymers 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 206010051246 Photodermatosis Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- LPUQAYUQRXPFSQ-DFWYDOINSA-M monosodium L-glutamate Chemical compound [Na+].[O-]C(=O)[C@@H](N)CCC(O)=O LPUQAYUQRXPFSQ-DFWYDOINSA-M 0.000 description 1
- 235000013923 monosodium glutamate Nutrition 0.000 description 1
- 239000004223 monosodium glutamate Substances 0.000 description 1
- 230000008845 photoaging Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
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- 239000002994 raw material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
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Abstract
本发明涉及化工领域,具体涉及聚碳酸酯专用型钛白粉及其制备方法。本发明所解决的技术问题是提供聚碳酸酯专用型钛白粉及其制备方法。该聚碳酸酯专用型钛白粉是将四氯化钛、四氯化硅、三氯化铝氧化,得氯化初品,然后与有机物共混造粒获得。采用该方法制备的钛白粉工艺流程短、工序少、过程简单,钛白粉粒子堆密度大,干粉流动性佳。且制得的聚碳酸酯专用型钛白粉的主要化学成分含量,以质量百分比计包括:二氧化钛含量≥92%,氧化硅含量≥2.0%,氧化铝含量≥1.5%。
Description
技术领域
本发明涉及化工领域,具体涉及聚碳酸酯专用型钛白粉及其制备方法。
背景技术
聚碳酸酯(英文Polycarbonate,简称PC)是指分子链中以碳酸酯基(-OROCO-)为基础链段的热塑性高分子聚合物,因其具有高冲击强度、高耐热性、阻燃和透明性等,使其在各种应用中的表现优于其他透明聚合物,从而成为用途最广的高性能树脂之一,广泛应用于建材、汽车、电子电气、食品包装和医疗保健等行业。
但同大多数聚合物一样,PC通常对于紫外线辐射不是十分稳定,在紫外线的作用下会发生光老化而导致降解。出现黄变现象,同时透光率、光泽度以及强度和韧性都将大幅度降低。
而钛白粉是一种性能优异的白色颜料,广泛应用于涂料、塑料、造纸、油墨、电子等领域,被称为“工业味精”。经过特殊处理的钛白粉可吸收紫外光,屏蔽产生的活性电子,应用在PC树脂体系中,可起到降低紫外线对PC树脂的降解作用,改善PC制品的性能,延长其使用寿命。但随着全球经济技术水平的提升,各行各业对清洁、环保、智能、自动化生产等要求越来越高,常规工艺生产的钛白粉粒子粒径小,比表面积大,堆密度小,干粉流动性差,不利于钛白粉包装、输送和加料。
且中国专利CN107805321A虽然公开了一种聚碳酸酯专用型二氧化钛颜料的制备方法,以氯化法工艺制备的金红石型二氧化钛初品为原料,进行湿法打浆,然后湿法包覆1~2%的氧化硅和1~3%的氧化铝,洗涤、烘干、汽粉得半成品,再将半成品打浆,湿法添加0.5~2%的有机表面改性剂氨基改性聚硅氧烷进行有机处理,处理后的浆料再次烘干、粉碎制得聚氨酯专用型二氧化钛颜料。但该制备方法流程长、工序多,过程复杂。
发明内容
为了解决现有技术的不足,本发明目的在于提供了聚碳酸酯专用型钛白粉及其制备方法。采用该方法制备的钛白粉工艺流程短、工序少、过程简单,钛白粉粒子堆密度大,干粉流动性佳。
本发明首先提供了聚碳酸酯专用型钛白粉的制备方法,包括以下步骤:
(1)将四氯化钛、四氯化硅、三氯化铝氧化,得氯化初品;
(2)将氯化初品与有机物共混造粒,即可。
其中,上述聚碳酸酯专用型钛白粉的制备方法,步骤(1)中,所述四氯化硅以氧化硅计占四氯化钛、四氯化硅、三氯化铝的2.0~4.0wt%。
其中,上述聚碳酸酯专用型钛白粉的制备方法,步骤(1)中,三氯化铝以氧化铝计占反应物四氯化钛、四氯化硅、三氯化铝的1.5~4.0wt%。
其中,上述聚碳酸酯专用型钛白粉的制备方法,步骤(2)中,有机物的化学成分包括:相同质量比的聚硅氧烷和木质素磺酸钠。
其中,上述聚碳酸酯专用型钛白粉的制备方法,步骤(2)中,有机物的化学成分包括:相同质量比的聚硅氧烷和聚丙烯酸钠。
其中,上述聚碳酸酯专用型钛白粉的制备方法,步骤(2)中,所述有机物为氯化初品总质量的0.5~2.0%。
本发明还提供上述方法制备的聚碳酸酯专用型钛白粉。
其中,上述聚碳酸酯专用型钛白粉的主要化学成分含量,以质量百分比计包括:二氧化钛含量≥92%,氧化硅含量≥2.0%,氧化铝含量≥1.5%。
其中,上述聚碳酸酯专用型钛白粉,其化学成分还包括包覆在外层的有机物。
其中,上述聚碳酸酯专用型钛白粉,平均粒径200±20nm,堆积密度≥0.8g/cm3。
有益效果:本发明针对聚碳酸酯对钛白粉的特殊要求,在四氯化钛氧化阶段添加四氯化硅和三氯化铝,使二氧化钛中包含有氧化硅和氧化铝,屏蔽二氧化钛吸收紫外光产生的活性电子,应用在PC树脂体系中,可起到降低紫外线对PC树脂的降解作用,改善PC制品的性能,延长其使用寿命。在氯化初品表面均匀包覆一层有机物,改善钛白粉与聚氨酯树脂体系的相容性,提升钛白粉在聚氨酯树脂体系中的分散性,以改善制品的强度和韧性。进行造粒处理,能够提高钛白粉粒子的堆密度和干粉流动性,且制备的聚碳酸酯专用型钛白粉SEM检测平均粒径200±20nm,堆积密度(松散)≥0.8g/cm3。且本发明制备工艺流程短、工序少、过程简单。
具体实施方式
本发明首先提供了聚碳酸酯专用型钛白粉的制备方法,包括以下步骤:
(1)将四氯化钛、四氯化硅、三氯化铝一起加入氧化炉中进行氧化,得到氯化初品;所述四氯化硅的添加量以氧化硅计为反应物全部总质量的2.0~4.0wt%;三氯化铝的添加量以氧化铝计为反应物全部总质量的1.5~4.0wt%。
(2)将步骤(1)所得氯化初品与有机物一起加入造粒系统中进行造粒,即为聚碳酸酯专用型钛白粉。其中,有机物的成分是等质量比的聚硅氧烷与木质素磺酸钠或等质量比的聚硅氧烷与聚丙烯酸钠。有机物的添加量为氯化初品总质量的0.5~2.0%。
本发明针对聚碳酸酯对钛白粉的特殊要求,在四氯化钛氧化阶段添加四氯化硅和三氯化铝,通过氯化法生产工艺,使二氧化钛中包含有氧化硅和氧化铝,从而屏蔽二氧化钛吸收紫外光产生的活性电子,将该钛白粉应用在PC树脂体系中,可起到降低紫外线对PC树脂的降解作用,改善PC制品的性能,延长其使用寿命。
本发明在氯化初品表面均匀包覆一层有机物,能够改善钛白粉与聚氨酯树脂体系的相容性,提升钛白粉在聚氨酯树脂体系中的分散性,以改善制品的强度和韧性。
本发明制备方法步骤(2)中进行造粒处理,能提高钛白粉粒子的堆密度和干粉流动性。
本发明还提供上述方法制备的聚碳酸酯专用型钛白粉。该钛白粉主要化学成分含量,以质量百分比计包括:二氧化钛含量≥92%,氧化硅含量≥2.0%,氧化铝含量≥1.5%,外层进行有机包覆。
实施例1
将四氯化钛、四氯化硅、三氯化铝一起加入氧化炉中进行氧化,四氯化硅的添加量以氧化硅计为反应物全部总质量的2.0%,三氯化铝的添加量以氧化铝计为反应物全部总质量的1.5%,得到氯化初品。将氯化初品与有机物一起加入造粒系统中进行造粒,有机物为聚硅氧烷和木质素磺酸钠,有机物的添加量分别为氯化初品总质量的0.25%,造粒所得粒子即为聚碳酸酯专用型钛白粉。
实施例2
将四氯化钛、四氯化硅、三氯化铝一起加入氧化炉中进行氧化,四氯化硅的添加量以氧化硅计为反应物全部总质量的3.0%,三氯化铝的添加量以氧化铝计为反应物全部总质量的2.7%,得到氯化初品。将氯化初品与有机物一起加入造粒系统中进行造粒,有机物为聚硅氧烷和聚丙烯酸钠,有机物的添加量分别为氯化初品总质量的0.6%,造粒所得粒子即为聚碳酸酯专用型钛白粉。
实施例3
将四氯化钛、四氯化硅、三氯化铝一起加入氧化炉中进行氧化,四氯化硅的添加量以氧化硅计为反应物全部总质量的4.0%,三氯化铝的添加量以氧化铝计为反应物全部总质量的4.0%,得到氯化初品。将氯化初品与有机物一起加入造粒系统中进行造粒,有机物为聚硅氧烷和木质素磺酸钠,有机物的添加量为氯化初品总质量的1.0%,造粒所得粒子即为聚碳酸酯专用型钛白粉。
Claims (10)
1.聚碳酸酯专用型钛白粉的制备方法,其特征在于:包括以下步骤:
(1)将四氯化钛、四氯化硅、三氯化铝氧化,得氯化初品;
(2)将氯化初品与有机物共混造粒,即可。
2.根据权利要求1所述的聚碳酸酯专用型钛白粉的制备方法,其特征在于:步骤(1)中,所述四氯化硅以氧化硅计占四氯化钛、四氯化硅、三氯化铝的2.0~4.0wt%。
3.根据权利要求1或2所述的聚碳酸酯专用型钛白粉的制备方法,其特征在于:步骤(1)中,三氯化铝以氧化铝计占反应物四氯化钛、四氯化硅、三氯化铝的1.5~4.0wt%。
4.根据权利要求1~3任一项所述的聚碳酸酯专用型钛白粉的制备方法,其特征在于:步骤(2)中,有机物的化学成分包括:相同质量比的聚硅氧烷和木质素磺酸钠。
5.根据权利要求1~4任一项所述的聚碳酸酯专用型钛白粉的制备方法,其特征在于:步骤(2)中,有机物的化学成分包括:相同质量比的聚硅氧烷和聚丙烯酸钠。
6.根据权利要求1~5任一项所述的聚碳酸酯专用型钛白粉的制备方法,其特征在于:步骤(2)中,所述有机物为氯化初品总质量的0.5~2.0%。
7.权利要求1~6任一项所述的聚碳酸酯专用型钛白粉。
8.根据权利要求7所述的聚碳酸酯专用型钛白粉,其特征在于:其化学成分以质量百分比计包括:二氧化钛含量≥92%,氧化硅含量≥2.0%,氧化铝含量≥1.5%。
9.根据权利要求7或8所述的聚碳酸酯专用型钛白粉,其特征在于:其化学成分还包括包覆在外层的有机物。
10.根据权利要求7~9任一项所述的聚碳酸酯专用型钛白粉,其特征在于:平均粒径200±20nm,堆积密度≥0.8g/cm3。
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