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Types of Flame Retardants in PVC Plastics, Flame Retardancy Rating Standards, Mechanisms of Action, and Applications

A Comprehensive Analysis of PVC Flame Retardant Types, Synergistic Mechanisms, and the UL 94 Flame Retardancy Rating Standard. Due to the presence of plasticizers, the LOI of flexible PVC decreases significantly; therefore, highly effective flame retardancy must be achieved through synergistic blending of chlorinated paraffin, red phosphorus, antimony trioxide, and other compounds. This article provides a detailed explanation of the mechanisms of action for halogen-based, phosphorus-based, nitrogen-based, and inorganic flame retardants, covering classic case studies in applications such as PVC cable compounds, pipes, and profiles, and serves as a technical reference for formulation engineers engaged in PVC flame retardant modification.

LSZH vs. PVC: A Practical Guide for Engineers

PVC cable compounds still account for 38.7% of the global market (approximately $7.07 billion), while LSZH materials are 30–50% more expensive and require equipment upgrades. GB/T 19666 specifies that low-smoke, halogen-free cables must have a smoke density and light transmittance of ≥60%, a pH of ≥4.3, and a conductivity of ≤10 µs/mm. For requirements related to smoke density and corrosivity, upgrading to flame-retardant PVC (replacing antimony trioxide with red phosphorus, resulting in a cost increase of only 8–12%) is a more rational choice.

Why Flexible PVC Loses Flame Resistance — The Plasticizer Problem

Silicone That Survives 1000°C — No Melt, No Drip, No Compromise

Yinsu flame-retardant, ceramicized ablation-resistant agents YS-TCG5 and YS-TCG6 are specifically designed for high-temperature vulcanized silicone rubber and liquid silicone rubber systems. Upon exposure to fire, they rapidly form a dense ceramic layer that withstands ablation from flames exceeding 1,000°C for 30 minutes without burning through. They are widely used in fire-resistant cables, new energy battery protection, and architectural fire-resistant seals, among other applications. These products comply with RoHS and REACH environmental requirements and contribute to the advancement of high-end fire-resistant materials.

Ceramic-Coated Silicone Rubber Cable Manufacturing Process: Reference Parameters for The Entire Process—Vulcanization, Extrusion, And Curing

The manufacturing process for ceramicized silicone rubber cables encompasses three core stages: vulcanization, extrusion, and curing. Temperature control, mold selection, and curing parameters at each stage directly impact the fire resistance and quality consistency of the finished product. This article systematically outlines the key process considerations and practical parameters for the production of ceramicized silicone rubber cables, providing cable engineers with a practical process guide to help avoid common issues such as rough extrusion surfaces and air bubbles.

A Technological Inflection Point in Rubber Flame Retardancy: A Synergistic Breakthrough Combining Expandable Graphite And Red Phosphorus

When the physical barrier provided by expandable graphite meets the chemical flame retardancy of red phosphorus, rubber flame retardancy finally breaks free from its “reliance on halogens” and moves toward “high-efficiency synergy.”

Polyethylene Market From Euphoria To Rationality: June Gains Retrace 30-70%, Blow Molding Sector Decline Highlights

In the first half of 2026, the PE market continued to retreat from price peaks driven up by geopolitical conflicts, with various grades having retraced 30%-70% of their gains. The triple bearish factors of weakening crude oil cost support, expectations of increased imports, and the downstream demand off-season are compounding, with the PE blow molding market falling 357 yuan/ton on the week. Short-term prices still have room for further downside. This article provides a detailed breakdown of price trends and forward-looking forecasts for HDPE, LDPE, and LLDPE grades.

Research on High-Filling Processing Pain Points And Solutions for Low-Smoke Halogen-Free Materials

High filler loading in LSZH materials causing agglomeration, poor flow, and excessive brittleness? YINSU Flame Retardant breaks down the five major processing pain points and root causes of ATH/MH-filled systems, offering integrated solutions including surface modification, synergistic compounding, and elastomer toughening—helping you achieve the balance between V-0 flame retardancy and processability.

Study on Properties, Mechanism And Application of Low Smoke Zero Halogen (LSZH) Materials for Aerospace Products

The enclosed spaces of spacecraft impose stringent requirements on flame retardant materials. How can Low Smoke Zero Halogen (LSZH) materials simultaneously achieve halogen-free properties, low smoke emission, high flame retardancy, and extreme environment stability? YINSU Flame Retardant systematically analyzes the mechanisms, standards, and core applications in aerospace cables and structural components, providing technical references for high-end flame retardant material selection.