Table 1: Polymer physics and chemistry performance test results.

Polymer	APP5	KYPAM	HDSJ
Solid content %	90.1	89.56	91.3
Molecular weight × 104	3500	1646	2100
The degree of hydrolysis %	18.2	23.2	25.1
Insoluble content %	0.15	0.0992	0.01
Coefficient of screen mesh	18.37	53.2	25.6
The filter factor	>1.5	>1.5	>1.5