Datong Coal Industrial Jinyu Kaolin Chemical Co., Ltd.

Calcined kaolin for Cable (GB-CKR90)1. Benefits and ApplicationGB-CKR90 is a calcined kaolin treated with a vinyl functional silane for use with peroxide and other free radical crosslinking...

Battery Storage & UPS Datong Coal Industrial Jinyu Kaolin Chemical Co., Ltd. 24 Dec 2025 ( )

Get Your Quote Now : Place of origin : China

Calcined kaolin for Cable (GB-CKR90)

1. Benefits and Application

GB-CKR90 is a calcined kaolin treated with a vinyl functional silane for use with peroxide and other free radical crosslinking systems. Calcined kaolin is produced from highly refined kaolin by heating at temperature above 1000 centigrade. During calcination, chemical, morphological and mineralogical changes occur. GB-CKR90 has been specifically developed for use in high voltage power cable insulations based on EPR and EPDM rubbers. GB-CKR90 imparts good insulating properties which are maintained both at high working temperatures and under wet conditions for the working life of the cable.

2. Typical Physical Properties

Item	GB-CKR90
Brightness (T457)	90.5min
Particle Size (0-2micron,%)	48-52
Particle Size (0-10micron,%)	94
Refractivity	1.62
Screen residue (325 mesh %)	0.05max
Oil Absorbency (g/100g)	---------
Dispersion (micron)	55max
pH	5-7.0
Surface Area(m2/g)	8.6
Bulk Density(kg/m3)	330
Aerated Powder Density (kg/m3)	430
Tapped Powder Density (kg/m3)	620
Specific Gravity (kg/m3)	2600
Moisture(%)	0.5max

3. Typical Chemical Properties

SiO2(%)	Al2O3(%)	Fe2O3(%)	TiO2(%)	CaO(%)	MgO(%)	CuO(%)	K2O(%)	Na2O(%)	MnO(%)
52+/-2	45+/-2	0.50max	1.5max	0.4max	0.2max	0.004max	0.05max	0.15max	0.004max

Technical Specifications

Item	Specifications	Remarks
Update Date	Datong Coal Industrial Jinyu Kaolin Chemical Co., Ltd.	2025
Lead time	within 30 days	Can be expedited
Material	See product manual	Request Inspection Report
Application	Applicable to multiple industries	Complies with standards
Keywords	calcined kaolin,China,hydrous kaolin,paper,coating,ceramice,ezport