Special formaldehyde-free pigment for art painting and preparation process of pigment

Abstract

The invention discloses a special formaldehyde-free pigment for art painting and a preparation process of the pigment. The pigment is prepared from, in parts by weight, 80-100 parts of vegetable gum,60-80 parts of an acrylic acid elastic emulsion, 1-3 parts of a preservative, 20-40 parts of silica sol, 10-20 parts of a functional aid, 1-3 parts of tourmaline powder, 0.2-1 part of perfume, 0.6-1.2parts of talc powder and 0.2-1 part of pigment powder. In the preparation process, BCM and chlorothalonil forming the preservative are added in the last step, the preparation cost can be effectivelyreduced by controlling the adding quantity of the preservative to the pigment, effective ingredients of the pigment are prevented from being damaged in the grinding process, and the utilization efficiency of the preservative is effectively improved.

Description

technical field [0001] The invention relates to a pigment for painting, in particular to a special pigment for formaldehyde-free art painting and a preparation process thereof. Background technique [0002] Art painting pigments are composed of pigment powder, vegetable glue and added functional additives including formaldehyde for anticorrosion and humectants, leveling agents, antifreeze agents and anti-cracking agents. The preparation process is as follows: firstly soak and dissolve the vegetable gum, filter, bleach and precipitate; then add formaldehyde and other additives to the precipitated vegetable gum; finally add the pigment powder to the above-mentioned colloid and stir to prepare the painting pigment . There are following defects in the painting pigment prepared by the above-mentioned process: one, the pigment has used formaldehyde as a preservative, because formaldehyde is a kind of volatile toxic substance, not only can the worker's health be constituted harm i...

AI Technical Summary

Problems solved by technology

There are following defects in the painting pigment prepared by the above-mentioned process: one, the pigment has used formaldehyde as a preservative, because formaldehyde is a kind of volatile toxic substance, not only can the worker's health be constituted harm in the preparation project, and all Formaldehyde is very easy to release and volatilize the painted paintings in a humid environment, making the preserved paintings easy to mildew and deteriorate; secondly, although formaldehyde is a good preservative, it has a good effect on the growth of bacteria, but it does not affect the growth of bacteria. The fungus and algae contained in and remaining in the pectin, as well as the Aspergillus, Penicillium in the humid environment, and the algae on the dry film of the painting have no imitative effect, so not only the use of formaldehyde pigments not only the shelf life Shorter (18 months), and the gloss and shelf life of paintings drawn with pigments containing formaldehyde preservatives will not be satisfactory