High Heat Resistant Expandable Microspheres CAS 38742-70-0 are dedicated physical foaming agents developed for automotive plastic components. The microspheres maintain stable expansion under high-temperature processing conditions and form fine closed-cell structure inside plastic substrates. They achieve effective lightweighting and lower raw material costs while preserving mechanical strength, heat resistance and dimensional stability required for auto parts. With outstanding thermal tolerance,

Product Detail

High Heat Resistant Expandable Microspheres CAS 38742-70-0 Automotive Plastic Parts Foaming Agent

Product Overview

High Heat Resistant Expandable Microspheres CAS 38742-70-0 are high-performance physical foaming and lightweight additives specially developed for automotive plastic components. Optimized to adapt to high-temperature molding conditions of automotive engineering plastics, the microspheres maintain complete particle integrity and stable expansion performance under high shear processing. They form fine, uniform and independent closed-cell structures inside plastic substrates, effectively reducing product density and raw material usage. While realizing lightweight modification, the product retains the mechanical strength, heat resistance and dimensional accuracy required for automotive interior and exterior plastic parts. Featuring excellent thermal stability, outstanding shear resistance and wide compatibility with various automotive-grade thermoplastics, it is an ideal foaming additive for mass production of lightweight automotive plastic parts.

Core Features

Excellent High Temperature Resistance

Customized thermal property matches high-temperature processing requirements of automotive engineering plastics. Microspheres expand fully without rupture, collapse or premature foaming, suitable for continuous automated production of auto parts.

High Shear Resistance, Low Particle Breakage

Optimized shell toughness resists intense shear force during injection molding. Less broken particles reduce surface defects and ensure stable, consistent foaming effect of molded automotive components.

Efficient Lightweight & Cost Saving

Dense closed-cell structure greatly lowers component weight and material consumption. It optimizes production costs and meets the lightweight development trend of automobile manufacturing industry.

Wide Compatibility with Automotive Plastics

Disperses evenly in PP, ABS, PA and other modified automotive plastics without agglomeration. It will not adversely affect material toughness, hardness, surface finish and coating adhesion of plastic parts.

Stable Dimensional Performance

Uniform foaming structure relieves internal stress of plastic products, inhibits shrinkage, warpage and deformation after molding, and improves the yield of precision automotive plastic components.

Environmentally Friendly Physical Foaming System

Adopts pure physical thermal expansion principle, no chemical decomposition, low odor and low VOC. Complies with mainstream environmental standards for automotive interior materials.

Product Specifications

Product Name: High Heat Resistant Expandable Microspheres

CAS No: 38742-70-0

Product Type: Automotive Plastic Foaming Agent, Lightweight Functional Additive

Appearance: White Ultra-Fine Powder

Applicable Processes: Injection molding, extrusion molding for automotive plastic parts

Applicable Materials: PP, ABS, PA and other automotive thermoplastics & modified engineering plastics

Core Function: Plastic foaming, lightweight modification, density reduction, raw material cost optimization

Recommended Dosage: 1.2%–4.0% (Adjust according to lightweight target and component performance requirements)

Application Scope

Widely used in lightweight foaming modification of various automotive plastic parts. Suitable for automotive interior trims, exterior decorative parts, functional brackets, plastic housings and other automotive plastic accessories. Applicable to lightweight projects of new energy vehicles and traditional fuel vehicles.

Usage Guide

Mix high heat resistant expandable microspheres with plastic raw materials evenly by low-speed stirring at room temperature. Avoid high-intensity shear stirring and long-time high-temperature preheating to prevent microsphere rupture and premature foaming. Follow standard injection or extrusion molding parameters. Microspheres complete stable thermal expansion and closed-cell formation during high-temperature processing. Adjust microsphere dosage, molding temperature, injection speed and holding pressure based on lightweight targets and surface quality standards. Keep 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 high heat resistant expandable microspheres are customized for automotive plastic production. With excellent heat resistance, stable expansion ratio and good batch consistency, the product can form delicate uniform closed-cell structure, achieve efficient lightweight and cost reduction while ensuring surface quality and dimensional stability of automotive plastic parts. We support factory direct sales, stable bulk supply, free sample testing and professional foaming formula technical guidance to help customers enhance product competitiveness.

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