TS-7400 Ca/Zn Stabilizer for PVC Drainage Pipes

Powder Form · 2.8–3.2 PHR
Low-Filling Formulation for Stable, Cost-Efficient Extrusion

Water never sleeps. It flows, it presses, it tests every weakness it finds. PVC drainage pipes exist to tame that restless force—quietly, reliably, for years on end. And behind every pipe that holds its shape, keeps its color, and survives heat, pressure, and time, there is a stabilizer doing invisible but essential work.

TS-7400 is engineered precisely for that role.

This calcium-zinc (Ca/Zn) stabilizer, supplied in powder form, is developed specifically for PVC drainage pipe applications, where long-term thermal stability, mechanical reliability, and processing efficiency matter more than shine or speed alone. With a recommended dosage of 2.8–3.2 PHR, TS-7400 uses a low-filling formulation to deliver strong stabilization without overloading the compound—keeping costs controlled, flow behavior predictable, and pipe quality consistent.

Designed for the Reality of Drainage Pipe Production

Drainage pipes are not luxury products. They are workhorses. They are expected to perform underground, behind walls, beneath roads—out of sight, but never out of responsibility. TS-7400 is formulated with this reality in mind.

Rather than excessive fillers or aggressive lubrication, TS-7400 relies on balanced chemistry: enough stabilization to protect PVC during processing and service life, without unnecessary solids that can weaken structure or complicate extrusion.

The result is a stabilizer that supports:

• Stable extrusion at standard and medium-high line speeds

• Uniform wall thickness

• Strong fusion and melt consistency

• Long-term resistance to heat aging

This is not a flashy formulation. It’s a dependable one.

Low-Filling Formulation: Strength Without Excess

The defining characteristic of TS-7400 is its low-filling design. In practical terms, this means:

• Less inert material introduced into the PVC matrix

• Higher effective resin content

• Better mechanical performance at equivalent dosages

• Reduced risk of brittleness or micro-cracking over time

For drainage pipes—especially those with larger diameters or thicker walls—this matters. Excessive filling can compromise impact strength and long-term durability. TS-7400 avoids that trap, delivering stabilization efficiency without diluting the polymer backbone.

Reliable Thermal Stability During Processing

PVC is unforgiving under heat. Once degradation begins, it accelerates fast—discoloration, odor, surface roughness, and loss of strength follow in quick succession. TS-7400 forms a protective barrier against this cascade.

Its Ca/Zn stabilizing system:

• Neutralizes released HCl during processing

• Suppresses early thermal degradation

• Maintains color consistency during extrusion

• Extends the processing window

This stability allows manufacturers to run with confidence, reducing scrap rates, minimizing start-up losses, and keeping extrusion conditions steady across long production cycles.

Built for Ca/Zn Compliance—Without Compromise

TS-7400 is 100% lead-free, making it suitable for modern regulatory environments and global export markets. Its calcium-zinc system meets the growing demand for environmentally responsible PVC additives while maintaining the robustness traditionally associated with heavy-metal stabilizers.

Key compliance advantages:

• RoHS compliant

• REACH aligned

• Suitable for municipal and infrastructure applications

• Safe for indoor and outdoor drainage systems

For drainage pipes used in residential, commercial, and industrial construction, this compliance is no longer optional—it’s expected.

Processing Behavior That Respects the Extruder

A stabilizer should support the process, not fight it. TS-7400 integrates smoothly into standard PVC drainage pipe formulations and works harmoniously with:

• Processing aids

• Internal and external lubricants

• Calcium carbonate fillers

• Impact modifiers

• Pigments and TiO₂

Its powder form ensures:

• Easy handling

• Uniform dispersion

• Consistent batch-to-batch performance

Torque remains stable, pressure fluctuations are minimized, and die behavior stays predictable—especially important for long pipe runs and thick-wall products.

Mechanical Properties for Long Service Life

Drainage pipes face a quiet but relentless set of stresses: soil load, temperature variation, moisture exposure, and slow chemical interaction with wastewater. TS-7400 supports the PVC matrix in resisting these challenges.

Pipes stabilized with TS-7400 demonstrate:

• Good impact resistance

• Stable tensile strength

• Resistance to thermal aging

• Structural integrity over extended service life

This makes TS-7400 especially suitable for:

• Underground drainage systems

• Sewage and wastewater piping

• Rainwater drainage pipes

• Building drainage networks

Surface Quality: Clean, Functional, Consistent

While drainage pipes don’t require decorative gloss, surface quality still matters. Roughness increases friction, traps debris, and signals instability in processing. TS-7400 promotes:

• Smooth, uniform internal and external surfaces

• Reduced risk of burn marks or discoloration

• Clean pipe appearance suitable for visible installations

The low-filling nature of the formulation helps maintain surface integrity without relying on excessive lubrication.

Recommended Dosage and Use

For optimal results, TS-7400 should be used within the range of:

2.8–3.2 PHR, depending on:

• Pipe diameter and wall thickness

• Extrusion temperature profile

• Filler loading level

• Line speed

Standard high-speed mixing ensures proper dispersion before extrusion. Minor adjustments to lubrication packages may be made depending on existing formulations, but TS-7400 generally integrates without requiring major recipe changes.

Packaging and Storage

TS-7400 is supplied in moisture-resistant packaging designed to preserve flowability and stabilizing efficiency.

Storage recommendations:

• Cool, dry environment

• Protected from direct sunlight

• Avoid prolonged exposure to humidity

• Follow FIFO (first in, first out) practices

Proper storage ensures consistent performance from the first bag to the last.

Why TS-7400

Because drainage pipes don’t need drama—they need discipline.

TS-7400 offers:

• Efficient stabilization at low dosage

• Low-filling formulation for better mechanical balance

• Reliable processing behavior

• Environmental compliance

• Long-term durability for drainage applications

It’s a stabilizer that understands its role: not to shine, not to boast—but to hold everything together, quietly and correctly, year after year.