Preparation process for manufacturing insulated paper by para position fiber and meta position fiber

Abstract

The invention discloses a manufacturing technology of copy-allocating insulated paper of para and meta aramid fiber, which comprises the following steps: adopting para-aramid chopped fiber and meta aramid pulp fiber to dispense insulated paper according to certain proportion; dispersing the fiber through PEC or congenic adjuvant; improving paper evenness and flexibility; proceeding heat pressing for para aramid fiber to modify physical strength and insulating property.

Description

technical field

[0001] The invention belongs to the intersecting field of synthetic fiber industry and papermaking industry, and particularly relates to a preparation process of para-position and meta-position aramid fiber blended insulating paper. Background technique

[0002] Aramid fiber can be divided into two main types according to its chemical structure: one is meta-aramid fiber characterized by heat resistance and flame retardancy, which is called aramid fiber 1313 in my country; the other is high-strength aramid fiber , High modulus of elasticity, para-aramid fiber characterized by heat resistance, called aramid fiber 1414 in my country. Both fibers include chopped fiber and pulp in two product forms. Aramid insulating paper produced from pure aramid 1313 chopped fibers and pulp fibers has excellent physical and mechanical properties, thermal stability, flame retardancy, electrical insulation and radiation resistance, and is a special fiber with high added value Pa...