What is paper clay What kind of material is clay

1.Clay soil is a clayey soil with few sand particles, and water is not easy to pass through it and has good plasticity.

2.General clay is formed by the weathering of silicate minerals on the surface of the earth, generally weathered in situ, with large particles and composition close to the original stone, called primary clay or primary clay. The composition of this clay is mainly silicon oxide and alumina, which is white and fire-resistant, and is the main raw material for the preparation of porcelain clay.

Paper clay is a kind of soft sculpture material popular in Europe, America, Japan, South Korea and other countries, because the raw material is mainly paper fiber, so we also call it pulp mud or paper clay.

Paper clay is lighter and has many advantages over flour clay. There are two types of paper clay: traditional paper clay and ultra-light paper clay. Ultralight paper clay components include foaming powder.

water, pulp and paste; The composition of traditional paper clay includes gum, fibers (and feldspar), etc.

Peculiarity. 1. A variety of colors, non-toxic, non-sticky, good softness, strong plasticity, 2. The work does not need to be baked, it is naturally air-dried, and there will be no cracks after drying.

3. After the work is dried and set, it can be colored (can be painted with watercolor or advertising color), and watercolor, oil paint, and acrylic can be used.

Pigments, nail polish.

etc., there is a high degree of inclusiveness. After the color is dry, it can be coated with varnish for long-term storage.

4. High degree of combination with other materials, whether it is paper, glass, metal, lace, or beads, it has an excellent degree of tightness.

Clay is made of a plastic aluminum silicate salt that can be very small. The materials contained in it are iron, potassium, calcium, magnesium, sodium. Clay is mainly a silicate mineral formed after weathering on the earth's surface, and the types of clay are classified into three types: geological genesis classification, high temperature resistance and impurity classification, and habit classification.

Causes and classification of impurities:

It is divided into primary clay and secondary clay, primary clay is a kind of residue after the weathering of the parent rock, so the particles are relatively coarse, the temperature required for sintering is high, and the plasticity is poor. Secondary clay is a clay that is carried from rivers to rivers and swamps, with fine particles, many impurities, low firing temperature and strong plasticity.

High temperature resistance performance classification:

Divided into refractory clay, refractory clay and fusible clay, the refractory temperature of refractory clay can be as high as 1580. The other two can be greater than 1580 or less than 1580 and can be fired.

Customary classification: can be divided into kaolin, cohesive soil, barren clay and shale. Kaolin is mainly used to make ceramics and refractory materials, and the particles are coarse and free of impurities. Cohesive soil is a secondary clay with fine particles, good plasticity and more impurities.

Barren soil is a kind of clay that is hard and not loose when exposed to water and has poor plasticity. The properties of shale are the same as those of barren clay, but there are more impurities.