T/SDPAA T/SDPAA0002.1-2023
Unbleached straw biochemimechanical pulp—Part 1: Pulp (English Version)

Standard No.

T/SDPAA T/SDPAA0002.1-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

Group Standards of the People's Republic of China

Latest

T/SDPAA T/SDPAA0002.1-2023

Scope

Quality requirements Quality requirements should comply with Table 1. Table 1 Quality requirements for unbleached straw biochemical mechanical pulp Index name Unit Excellent product Freeness 300mL Bulk ≥ cm3/g 1.7 1.5 Tensile index ≥ N·m/g 40 35 Tear index ≥ mN·m2/g 2.5 1.8 Ring pressure index ≥ N·m/g 4.5 4.0 Freeness 200mL Bulk thickness ≥ cm3/g 1.6 1.4 Tensile index ≥ N·m/g 45 40 Tear index ≥ mN·m2/g 2.0 1.8 Ring pressure index ≥ N ·m/g 5.0 4.5 Freeness 150mL Bulk ≥ cm3/g 1.5 1.3 Tensile index ≥ N·m/g 50 45 Tear index ≥ mN·m2/g 2.4 1.8 Ring pressure index ≥ N·m/g 4.8 4.3 Note 1: The sheet quantification is 60.0g/m2; Note 2: The initial freeness deviation is ±25mL.

T/SDPAA T/SDPAA0002.1-2023 history

• 2023 T/SDPAA T/SDPAA0002.1-2023 Unbleached straw biochemimechanical pulp—Part 1: Pulp