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Chlorinated Polyvinyl Chloride (CPVC)

Introduction

Addtime: 2013/7/24

SURPLA TM CPVC resin and CPVC compound 

Chlorinated Polyvinyl Chloride (CPVC)
                                          Revised 20 June 2013
 

General Introduction
Surpla TM CPVC resin is a PVC homopolymer that has been subjected to a chlorination reaction. It has become an important engineering thermoplastic due to its relatively low cost, high heat distortion temperature, chemical resistance and outstanding mechanical, dielectric, flame and smoke properties. CPVC was first commercialized by Noveon in the early 1960s and has since proven its value in a variety of industrial applications in which a high use temperature and excellent resistance to chemical are desirable. Besides pipe and fittings, many other industrial fluid-handling product are available in CPVC including pumps, valves, strainers, tower packing, and duct, as well as sheet for fabrication into tanks, duct, and tank lining.

Features of Surpla TM CPVC
Heat Resistance
The temperature at which CPVC softens has been improved by 20 to 40°C compared to general purpose PVC. As a consequence, outstanding toughness and anti-creep properties are maintained even in applications which are constantly exposed to high temperatures, such as hot water pipes and steam pipes, where general purpose PVC would soften, rendering it useless.
Moldability
By making slight adjustments to the blending and processing conditions for PVC resin, CPVC can be used in various types of molding machines used for general purpose PVC, enabling high-quality products to be obtained.
Chemical Resistance and Corrosion Resistance
CPVC boasts the same chemical resistance as general purpose PVC, and these properties are maintained even at high temperatures.
Flammability
In contrast to PE, PP and ABS, CPVC is self-extinguishing, generates minimal smoke, and has a high oxygen index, giving it excellent flammability, which makes it optimal as a flame retardant plastic.
Electric Insulation Properties
CPVC's electric insulation properties are superior to other plastics, in the same way as PVC, making it ideal as an electric insulating material.
Treatment / Secondary Processing Properties
In the same way as general purpose PVC, an adhesive can be used to adhere CPVC, making it easy to work with pipes, etc., and welding, bending, sleeve processing and vacuum molding are possible.
 
Application
Sprinkler Pipes
Sprinkler pipes are used as pipes to extinguish indoor fire fighting. CPVC pipes have outstanding flame retardant, enabling deformation by heat to be delayed. CPVC are rarely, if ever, blocked by rust or the like.
Industrial Heat-Resistant Pipes
CPVC pipes are used in various chemical plants. CPVC pipes boast outstanding chemical resistance. They also have outstanding heat resistance compared to general PVC pipes.
CTS Pipes
CPVC pipes do not rust, and as such are used for indoor hot water supply pipes.
Outdoor Air-Conditioner Duct Covers
CPVC is used for outdoor air-conditioner covers and cable covers. It is used in particular for dark phr which reach high temperatures when exposed to sunlight. Surpla TM CPVC can be recommended for such applications as an alternative to general purpose PVC.
Hot Water Supply Joints
Joints using Surpla TM CPVC can be injection molded to incorporate brass metal phr. They can be connected and separated easily.
Drainage Joints
Surpla TM CPVC is resistant to heat and chemicals, and can be used as joints for hot water and drainage circuits which can be connected and separated.
Power Cable Joints
Surpla TM CPVC is heat resistant, and can be used as joints for power cables which become hot.
Transparent Fitting
Surpla TM CPVC can be molded into transparent fitting by adjusting the compounding. It is possible to inspect of adhesives, making it possible to visually expect fitting after they have been mounted.
Heat-Resistant Industrial Plates and Sheets
CPVC is used as a part of equipment for manufacturing semiconductor printed circuit boards. Chemical-resistance and heat-resistance are particularly required as phr for cleaning tanks.
Transparent Heat-Resistant Industrial Plates
Surpla TM CPVC can be molded into transparent plates by adjusting the compounding. Being transparent, the level of storage tanks can be easily inspected, and it is easy to inspect the situation inside equipment in the production process.
Fittings
Surpla TM CPVC has been designed for a wide range of applications as heat resistant fittings and valves.
Heat Resistant Flange
Surpla TM CPVC can be injection-molded as large-diameter flanges and joints for industrial pipes.
 
Supply Specification
Item
Unit
ET-700
ET-800
External Appearance
 
White Power
White Power
Chlorine Content
%
66 - 68
66 - 68
K Value
 
61 - 63
65 - 68
Bulk Density
g/cm3
0.5 - 0.7
0.5 - 0.7
Heat Loss
%,  ≤
0.3
0.3
Vicat softening temperature (5 kg load)
°C,  ≥
115
115
Tensile Strength
MPa,  ≥
56
59
Elongation at break
%, ≥
70
80
 
Basic formulation for test:
Surpla TM CPVC                 100 PHR
Tin stabilizers                       2.0 PHR
High-grade fatty acid           0.7 PHR
OPE wax                                2.5 PHR
MBS impact modifier          10   PHR
 
Selection Guide
Type ET-700
Mainly applicable to extrusion of all kinds of heat-resistant plastic products, such as hot-water tube used in shipping and life facilities, brine tube, chlorine gas tube, electric pipeline of chlorine-alkali factories etc.
ET-700 has good processing ability and the end products have good surface
Type ET- 800
ET-800has the highest molecular weight and so has the best physical property.
It is applicable to extrusion of all kinds of heat-resistant plastic products, such as hot-water tube used in shipping and life facilities, brine tube, chlorine gas tube, electric pipeline of chlorine-alkali factories etc.

Packing
25 kg PP woven bag, 17mt in 20 FCL no palletilized, 15 mt in 20 FCL palletilized.
This material is non-dangerous goods for land, air and marine transportation.
Material should be kept from flames, hot pipes, heaters or other sources of heat. Adequate precautions should be taken to keep all dust levels below values that are hazardous to heath and safety. The recommended maximum storage temperature for this material is 45 deg.C.
 
Safe Handling
Please consult the MSDS before handling for additional information concerning personal protective equipment, Safety, Health and Environmental information, and always exercise the utmost care in handling.

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