Anti-Aging Chlorinated Polyvinyl Chloride CPVC Roof Exhaust Pipe

Product Description

Product Overview

Chlorinated polyvinyl chloride (CPVC) is a thermoplastic produced by chlorination of polyvinyl chloride (PVC) resin. CPVC is significantly more flexible than PVC, and can also withstand higher temperatures. Common applications include hot and cold water supply systems, as well as industrial fluid transport. Similar to PVC, CPVC is recognized as a safe material for potable water distribution and usage.

 

Product Parameters

 

CPVC Resin Physical Properties Table

Property	Unit	Typical Value	Notes
Appearance	-	White to pale yellow powder/granules	Free-flowing, non-agglomerating
Bulk Density	g/cm³	0.50-0.65	Depends on particle size distribution
True Density	g/cm³	1.50-1.58	Measured by helium pycnometer
Chlorine Content	wt%	63-69	Higher than standard PVC (56.7%)
Moisture Content	%	≤0.3	After drying at 80°C for 2 hours
Volatile Matter	%	≤0.5	Includes residual VCM and solvents
Particle Size	mesh	80-120	Customizable for processing needs

 

Thermal & Rheological Properties
| Vicat Softening Temperature | °C | 100-125 | ASTM D1525 (10N load) |
| Melt Temperature Range | °C | 190-230 | Processing window |
| Thermal Stability | min | ≥30 | At 200°C under nitrogen |
| Melt Flow Rate (MFR) | g/10min| 2-10 | 200°C/5kg, ASTM D1238 |

Combustion Characteristics
| Limiting Oxygen Index (LOI) | % | ≥60 | ASTM D2863 |

Key Notes:
1. All values represent unmodified base resin properties
2. Typical values may vary ±5% depending on:
     ·Chlorination degree (63-69% Cl)
     ·Molecular weight distribution
     ·Production process (suspension/water-phase chlorination)
3. Processing conditions (shear rate, temperature profile) significantly influence final performance

 

Uses

The material's unique combination of properties - including its thermal endurance, chemical inertness, and mechanical robustness - makes CPVC compounds an ideal engineering solution for applications requiring reliable performance under thermally and chemically challenging conditions.

Primary Applications

Plumbing Systems:
1. Hot water distribution networks
2. Residential and commercial water supply lines
3. Pressurized piping systems
Industrial Solutions:
1. Chemical processing equipment
2. Corrosive fluid handling systems
3. Industrial effluent management
Safety Systems:
1. Fire suppression sprinkler networks
2. Flame-retardant electrical conduits
3. Hazardous material containment
Specialty Applications:
1. Automotive fluid systems
2.Medical device components
3.Food processing equipment

 

 

 

Key Characteristics

 

CPVC compounds are high-performance thermoplastics widely utilized in plumbing and industrial applications. As a chlorinated modification of PVC, these compounds undergo additional chlorination treatment to enhance their thermal stability and mechanical strength. This modification process significantly improves the material's heat deflection temperature while maintaining excellent processability.

1. Superior thermal stability (continuous service temperature up to 93°C/200°F)

2. Outstanding pressure resistance for demanding fluid transport systems

3. Exceptional corrosion resistance against acids, alkalis and salts

4. Built-in flame retardancy with self-extinguishing properties

5. UV stability for outdoor applications

6. Long-term durability with minimal degradation

 

Advantage

Chlorinated Polyvinyl Chloride (CPVC) is an advanced engineering thermoplastic obtained through chlorination modification of PVC resin. This high-performance material appears as white or light yellow, odorless, non-toxic free-flowing granules or powder with excellent organoleptic properties.

The chlorination process induces three key molecular-level improvements:
1. Increased irregularity in molecular chain arrangement
2. Enhanced polarity
3. Improved solubility and chemical stability

These structural modifications impart superior material characteristics:
1.Heat resistance: Vicat softening temperature elevated from 72-82°C to 90-125°C
2.Thermal capability: Maximum service temperature of 110°C with long-term stability at 95°C
3.Chemical resistance: Exceptional stability against acids, alkalis, salts and oxidizers
4.Mechanical enhancement: Improved heat deformation temperature and overall strength
5.Chlorine content: Increased from 56.7% to 63-69% for enhanced flame retardancy

CPVC represents a breakthrough engineering material with extensive application potential across multiple industries.
 

Processing instructions

While CPVC is derived from PVC and shares some fundamental properties, it possesses distinct processing characteristics that demand special attention:

Extrusion Processing Requirements

1. Melting Temperature Range: 400-450°F (204-232°C)
2. Die Specifications:
     ·Must use chrome-plated or stainless steel dies;
     ·Requires streamlined die design to ensure stable long-term operation;
     ·Flat dies are unsuitable for sustained production.
3. Size Control: Vacuum sizing technology is strongly recommended for precise pipe/profile dimensional control
4. Equipment Power: Minimum 40HP screw drive system required
5. Screw Design: Multiple screw configurations available for optimized processing of formulated compounds

Injection Molding Guidelines

1. Screw Type:Standard fittings:
     ·Low-compression screw with appropriate L/D ratio;
     ·Pipe fittings:Sharp-plasticizing screw design;
     ·Low-viscosity/high-output materials: Modified screw without sliding check ring (ball check screws prohibited).
2. Mold Construction: Stainless steel preferred; minimum requirement of chrome/nickel-plated surfaces

Detailed Photos

 

 

 

Company Profile

Weifang Phoenix New Material Co., Ltd

 

       Weifang Phoenix New Material Co., Ltd is a high-tech chemical enterprise integrating research and development,

production, sales and technical services. Headquartered in Weifang, Shandong Province. Its production facilities are

ocated in Weifang Binhai Chemical Industry Park, a state-approved chemical industry park.
 

      Our mission is to be the leading sustainable "one-stop shop" chemical solutions company, providing customers

with innovative, science-led, differentiated products and solutions. To this end, we provide a safe and healthy working

environment for our employees and comply with all local, national and international regulations.