POLESTAR™ 200R in Rubber

T H E A P P L I C A T I O N O F M I N E R A L S C I E N C E

A T T R I B U T E S

- Highly insulating

- Excellent processability

- Low compression set

- High purity

PoleStar™ 200R in Rubber

PoleStar™ 200R imparts excellent electrical insulation properties to low and medium voltage power cables.

Its low moisture absorption properties ensure that the

insulation properties are maintained under wet operating

conditions. Extrusion and calendering of rubber benefit

from the processing properties of PoleStar™ 200R.

Products can be manufactured with a very smooth finish

and excellent dimensional control, due to the low die

swell imparted by PoleStar™ 200R.

PoleStar™ 200R gives very low levels of mill

sticking when used in halogenated polymers such as

polychloroprene, Hypalon or chlorinated polyethylene.

It is also light coloured, chemically inert and gives

low permanent set behaviour. This combination

of properties ensures its use in pharmaceutical

closure applications, where only the highest quality

materials can be tolerated. (Table 2).

Its performance in Hypalon (Table 3) is shown right,

where a range of loading is looked at giving compounds

with different hardnesses, because the plasticiser has

remained constant.

PoleStar™ 200R loading, phr 50 100 150 200 250

Minimum Torque (dNm) 1.68 3.10 5.37 6.3 11.5

Maximum Torque (dNm) 34.5 47.8 59.4 68.1 81.4

T2 (mins) 2.7 2.2 2.0 1.5 1.4

T90

(mins) 19.5 21.5 19.5 11.3 9.7

Tensile Strength (MPa) 13.8 9.0 9.7 11.0 11.9

Modulus at 100% (MPa) 3.4 6.4 9.6 - -

Elongation at break (%) 480 340 130 60 60

Hardness (IRHD) 61 73 83 91 93

Compression Set at 100°C (%) 88 86 58 74 79

Cable insulation phr

Vistalon 4608 100

Zinc oxide 5

Stearic acid 0.5

Flectol H 1.5

PoleStar™ 200R 150

Vinyl silane 1.5

Sunpar 2280 30

Perkadox 1440 7

Rhenofit TAC/S 2

Properties

Tensile strength (MPa) 7.8

Modulus at 300% (MPa) 5.1

Elongation at break (%) 240

Hardness (IRHD) 68

Compression set at 100°C (%) 7.5

Volume resistivity (ohm.cm) 1.3 x 1014

Relative permittivity 2.91

Dissipation factor (Tanδ) 0.009

Bromobutyl closure phr

Bromobutyl X2 100

Red iron oxide 0.5

AC617A 2

Paraffin wax 2

Zinc Oxide 4

TMTD 0.4

PoleStar™ 200R 100

Properties

Tensile strength (MPa) 7.8

Modulus at 100% (MPa) 2.1

Elongation at break (%) 780

Hardness (IRHD) 51

C phr

Hypalon 90 100

Maglite DE 10

Titanium dioxide 20

Polyethylene wax 3

Sulphur 1

MBTS 0.5

Robac P25 2

Diisoctyl sebacate 15

PoleStar™ 200R 50-250

The information contained herein was obtained as a result of work carried out on materials thought to be representative and accordingly is believed to be correct. Such information shall not, however constitute any representation, condition or warranty as to any fact contained herein, and accordingly IMERYS Minerals Ltd hereby disclaims all and any liability arising from the use of such information howsoever caused.

TA B L E 1 TA B L E 2 TA B L E 3

M O N S A N T O R H E O M E T E R

F O R M O R E I N F O R M A T I O N

t: +44 (0)1726 818000 f: +44 (0)1726 811200 rubber.kaolin@imerys.com imerys-kaolin.com

UKP/R005 - SECOND EDITION - 11/17

ABOUT IMERYS

IMERYS is the world leader in mineral-based specialty solutions for industry. We transform a unique range of minerals to deliver

functional specialty solutions that are essential to customers’ products and manufacturing processes. With 300 scientists,

eight research and technology centers, 21 market-focused regional laboratories and close-ties with renowned research institutes,

we lead the way in engineering minerals for industry.

ABOUT IMERYS KAOLIN EUROPE, MIDDLE EAST AND AFRICA

IMERYS Kaolin EMEA is a division of IMERYS. With over a hundred years’ experience in the minerals business, we offer customers engineered

solutions derived from our portfolio of kaolin and calcined kaolins. We refine and engineer these minerals through various—often

proprietary—processes that influence their concentration, size, shape, structure and surface chemistry to obtain the exact properties our

customers require. Each year, we process thousands of tons of materials to the highest standards of quality, consistency and reliability.

DELIVERING THE GOODS

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We believe that running a successful business and sustaining quality of life and the environment go hand in hand. From implementing

behavior based safety training to rehabilitating the land, we think it’s important that future generations’ needs are not compromised

by our actions today.

OUR FUNDAMENTAL SUSTAINABILITY PRINCIPLES ARE:

Safety - We promote the health and safety of employees, contractors, customers, neighbors and consumers through active caring.

Partnership - We seek to understand the issues that are important to our neighbors, and to make a lasting contribution to the

communities in which we operate.

Environmental protection - We work to minimize our environmental footprint by using natural resources efficiently,

preventing pollution, complying with applicable laws and regulations and continually improving our performance.

Accountability - We conduct business in an accountable and transparent manner, relying on external auditing and reporting

to understand and reflect our stakeholders’ interests.

Product stewardship - We are committed to ensuring that our products are safe for people and the environment, employing best

available technology and following best-in class procedures to ensure that our standards and practices meet or exceed safety

requirements everywhere we do business.

We conduct life cycle assessments (LCA) at all our operations to quantify the environmental effects associated with producing our products

from the mine to factory gate, and to identify areas for improvement. Likewise, we compile life cycle inventories (LCI) of the energy

consumption, materials used and emissions generated by each of our product ranges. These LCI can be made available to customers and

research institutions on request.

Although the information in this document is believed to be accurate, it is presented without warranty of any kind and IMERYS assumes

no liability with respect to its use. No license to any intellectual property right is granted or implied. Statements or suggestions concerning

possible use are made without representation or warranty that any such use is free of patent infringement, and are not to be construed as

suggestions or inducements to infringe any patent.