Ink and preparation method thereof

Abstract

The invention provides ink and a preparation method thereof. The ink comprises the following raw materials in parts by weight: 35-40 parts of edible alcohol, 28-33 parts of titanium dioxide, 3-8 parts of polyvinyl butyral, 5-7 parts of white oil, 3-5 parts of emulsified silicone oil, 1-2 parts of emulsifier, and 7-10 parts of ethylene glycol butyl ether. The preparation method of the ink comprises the following steps: A. dissolving polyvinyl butyral into edible alcohol and stirring for 10-30 minutes; B. adding titanium dioxide and stirring for 10-30 minutes; C. adding white oil, emulsified silicone oil, emulsifier and ethylene glycol butyl ether and stirring for 15-20 minutes; and D. grinding for 30-45 minutes. According to the ink and the preparation method thereof, the dust flying phenomena can be completely avoided, wiping is easy, pollution to interior air does not exist, writing is smooth, and the breaking and the phenomena due to overlarge force in writing of chalks can be prevented, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to the field of inks, in particular to an ink and a preparation method thereof. Background technique [0002] At present, school teaching generally adopts blackboard or dark green board and chalk blackboard writing method. The surface of this blackboard is rough, and its general service life is only 2-3 years. Most of the chalk uses traditional gypsum chalk. The main components of traditional gypsum chalk are calcium carbonate (limestone), calcium sulfate (gypsum) and calcium oxide (quicklime), and other small amounts of metals and heavy metal elements (such as lead, manganese, barium, cadmium, etc.) ). Due to the dry writing, dust pollution will be generated during writing and wiping, and the dust floats in the air for a long time, seriously polluting the indoor air. In addition, when writing with chalk, you need to use force to apply the chalk to the surface of the blackboard. The frictional resistance in writing is relativel...

AI Technical Summary

Problems solved by technology

[0003] In response to the above problems, an improved dust-free chalk appeared in the later stage, but it only added grease or polyalcohols to the original chalk as a binder, and then added fillers with a larger proportion, such as clay, marl, cement, etc. This can increase the specific gravity and volume of the chalk dust, making it difficult to scatter, but in practical applications, its effect on reducing chalk dust pollution is not very obvious