We sent measurements of the tank in Kyuasini Primary School to our USA friends, Climate, inc. Climate are currently in processes of sending PVC liner to Kenya for lining the tank. PVC liner and bladder materials have an outstanding lifetime and they are highly resistant to weather impact. Molecular structure provides protection over a long period of time, even when exposed to the atmosphere, sunlight, UV direct impact. Strength and elasticity remains constant over many years.
Climate Inc. produces liner membranes for water and other fluid storage. Each membrane is produced on order, by precise dimensions and specification. We also offer Butyl and EPDM membrane material which can be used to store various fluids. All the membranes can be used for tank refurbishment, for existing concrete or steel tanks.
Butyl rubber is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for isobutylene isoprene rubber. Polyisobutylene, also known as “PIB” or polyisobutene, (C4H8)n, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is based. Butyl rubber is produced by polymerization of about 98% of isobutylene with about 2% of isoprene. Structurally, polyisobutylene resembles polypropylene, having two methyl groups substituted on every other carbon atom. Polyisobutylene is a colorless to light yellow viscoelastic material. It is generally odorless and tasteless, though it may exhibit a slight characteristic odor.
It can be made from the monomer isobutylene or CH2=C(CH3)2 only via cationic addition polymerization. A synthetic rubber, or elastomer, butyl rubber is impermeable to air and used in many applications requiring an airtight rubber. Polyisobutylene and butyl rubber are used in the manufacture of adhesives, agricultural chemicals, fiber optic compounds, ball bladders, caulks and sealants, cling film, electrical fluids, lubricants (2 stroke engine oil), paper and pulp, personal care products, pigment concentrates, for rubber and polymer modification, for protecting and sealing certain equipment for use in areas where chemical weapons are present, as a gasoline/diesel fuel additive, and chewing gum. The first major application of butyl rubber was tire inner tubes. This remains an important segment of its market even today.
EPDM exhibits satisfactory compatibility with fireproof hydraulic fluids ketones, hot and cold water, and alkalis and exhibits unsatisfactory compatibility with most oils, gasoline, kerosene, aromatic and aliphatic hydrocarbons, halogenated solvents and concentrated acids.
The main properties of EPDM are its outstanding heat, ozone, and weather resistance. The resistance to polar substances and steam are also good. It has excellent electrical insulating properties. It has good resistance to ketones, ordinary diluted acids, and alkalies.