High Temperature Expandable Microspheres CAS 38742-70-0 PP PE Injection Molding Foaming Agent 160-220℃
High Temperature Expandable Microspheres CAS 38742-70-0 are physical foaming agents designed for PP and PE injection molding. Within 160–220 ℃ processing range, microspheres expand evenly to form fine closed-cell structure inside plastic parts. It effectively lowers product density to achieve lightweight, reduces raw material consumption, and maintains good dimensional stability. With excellent heat resistance and great compatibility with PP, PE systems, uniform cell distribution and low shrinka
High Temperature Expandable Microspheres CAS 38742-70-0 PP PE Injection Molding Foaming Agent 160-220℃
Product Overview
160-220℃ High Temperature Expandable Microspheres CAS 38742-70-0 are professional physical foaming additives specially developed for PP and PE injection molding lightweight modification. Adapted to high-temperature plastic processing conditions, the microspheres achieve stable and uniform thermal expansion within 160-220℃ molding temperature range. They form dense, independent closed-cell structures inside PP and PE products, effectively reducing material density and realizing lightweight effect. The product features high temperature resistance, low shrinkage rate and excellent compatibility with polyolefin resin systems. It stably improves product cushioning performance and surface flatness without affecting the basic mechanical properties of plastic parts. It is an ideal high-temperature foaming solution for various injection molding lightweight plastic products.
Core Features
Ultra-Wide High-Temperature Foaming Window: Stable expansion at 160℃–220℃, perfectly matching conventional PP and PE injection molding temperature conditions. No cracking, collapse or insufficient foaming during high-temperature processing, suitable for high-speed mass production.
Excellent Lightweight & Cost Reduction: Effectively reduces the overall density of injection-molded parts, lowers raw material dosage and production costs. It realizes lightweight upgrading while maintaining good structural stability of plastic products.
Uniform Closed-Cell Structure: Forms fine and consistent closed pores after expansion. No large voids or uneven foaming, ensuring smooth product surface, stable texture and reliable physical performance.
High Dimensional Stability & Low Shrinkage: Effectively inhibits thermal shrinkage, warping and deformation of PP/PE injection parts during high-temperature molding. Greatly improves product yield and dimensional consistency of finished goods.
Superb PP/PE Resin Compatibility: Ultra-fine powder disperses evenly in polyolefin melts without agglomeration. It will not damage resin fluidity, tensile strength, toughness or surface appearance of injection products.
Safe & Eco-Friendly Physical Foaming: Adopts pure thermal expansion principle with no chemical decomposition, low odor and low VOC. Complies with environmental standards for daily plastic products, packaging materials and industrial plastic parts.
Product Specifications
Product Name: High Temperature Expandable Microspheres
CAS No: 38742-70-0
Product Type: PP PE Injection Molding Physical Foaming Agent / Lightweight Filler
Foaming Temperature Range: 160℃–220℃
Appearance: White Ultra-Fine Powder
Applicable Material: PP polypropylene, PE polyethylene, polyolefin blended materials
Core Function: High-temperature foaming, density reduction, lightweight modification, anti-shrinkage, cost saving
Recommended Dosage: 1.5%–4.5% (Adjust according to target density and foaming requirements)
Application Scope
Mainly used for high-temperature foaming and lightweight processing of PP and PE injection molding products. Widely applicable to lightweight plastic casings, packaging accessories, daily plastic parts, industrial polyolefin profiles, buffer plastic parts and other injection molding products. It solves the problems of heavy weight, high material consumption and hard handfeel of solid PP/PE products, widely used in packaging industry, consumer electronics, daily necessities and industrial manufacturing fields.
Usage Guide
Mix high-temperature expandable microspheres evenly with PP/PE raw materials through low-speed stirring at room temperature. Avoid high-shear stirring and pre-overheating to prevent microsphere rupture and premature foaming. Adopt standard injection molding procedures, and complete stable thermal expansion and closed-cell forming during 160-220℃ high-temperature molding process. Adjust microsphere dosage, molding temperature and holding pressure appropriately according to target lightweight degree and product performance requirements. Keep raw materials sealed and moisture-proof during production and storage.
Packaging & Storage
Packaging: 25kg sealed moisture-proof composite bag with inner PE liner, dust-proof and leak-proof, suitable for industrial bulk supply and long-distance transportation.
Storage: Store in dry, cool and ventilated warehouse, keep tightly sealed at all times. Avoid direct sunlight, high-temperature stacking and humid environment to prevent caking and spontaneous foaming. Standard shelf life is 12 months under proper storage conditions.
Our Advantages
Our 160-220℃ high-temperature expandable microspheres feature high heat resistance, stable foaming ratio and excellent adaptability to PP and PE injection molding systems. Capable of forming uniform and delicate closed-cell structure at high temperature, the product effectively reduces product weight and production cost while ensuring stable dimensional accuracy and surface quality. We provide factory direct supply, stable bulk order support, free sample testing and professional injection molding formulation technical guidance to help customers improve product competitiveness.
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