Description

Technical Parameters

Product Overview

MPP Foam (Microcellular Polypropylene Foam) is a high-performance, lightweight porous foam material manufactured using clean supercritical CO₂ or nitrogen foaming technology. The foam features micron-sized closed cells (typically 1–100μm), resulting in a material that uniquely combines rigidity and toughness-a property difficult to achieve with traditional foams like EVA or PU.

MPP Foam is non-crosslinked, fully recyclable, and free of volatile organic compounds (VOCs), making it an environmentally friendly choice for demanding applications in EV battery packs, 5G communications, medical devices, and high-end packaging.

Key Features

Feature	Benefit
Lightweight & High Strength	Density as low as 30–100 kg/m³ with excellent strength-to-weight ratio
Closed-Cell Structure	Extremely low water absorption (<0.10%), excellent waterproofing
High Temperature Resistance	Heat distortion temperature up to 120°C, far superior to PE/PS/PU foams
Excellent Thermal Insulation	Thermal conductivity ≤ 0.040 W/(m·K)
Outstanding Cushioning & Protection	High energy absorption for impact and vibration protection
Clean & Environmentally Friendly	No chemical blowing agents, zero VOC, non-toxic, food-contact safe
Recyclable	100% recyclable as no crosslinking occurs during foaming
Flame Retardant Option	Available in UL94 HF-1 rated grades

Technical Specifications (Typical Values)

Parameter	Value	Test Method
Material	Polypropylene (PP)	-
Cell Size	1 – 100 μm (microcellular)	-
Density	30 – 120 kg/m³ (customizable)	ISO 845
Heat Distortion Temperature	100 – 120°C	ISO 75-2
Thermal Conductivity	≤ 0.040 W/(m·K)	GB/T 10294
Water Absorption	< 0.10%	CNS2536
Dielectric Constant	< 1.02 (low loss)	-
Flame Rating (optional)	UL94 HF-1	UL94
RoHS Compliant	Yes	-
Recyclable	Yes (non-crosslinked)	-

Mechanical Properties by Density Grade

Grade	Density (kg/m³)	Compressive Strength @10% (MPa)	Bending Strength (MPa)	Hardness (Shore C)
MPP10	~90	0.56	0.90	81
MPP15	~60	0.36	0.68	75
MPP20	~45	0.30	0.44	66
MPP25	~36	0.23	0.36	55

Data source: Industry standard specifications

Typical Applications

Industry	Application	Key Requirement Met
EV Battery Packs	Battery cell cushioning pads, side insulation, bottom protection	Lightweight, compression resistance, thermal insulation, flame retardant
5G Communications	Antenna radomes, RF device housings	Low dielectric constant (<1.02), low loss, weather resistance
Consumer Electronics	Packaging for LCD panels, electronic components	Surface protection, anti-static, cushioning
Medical & Food	Medical device packaging, food contact trays	Non-toxic, zero VOC, FDA-compliant options
Industrial	Thermal insulation for HVAC	Low thermal conductivity, lightweight
Sports & Leisure	Backpack straps, slippers, protective gear	Lightweight, comfortable, durable

Why Choose Our MPP Foam?

Advantage	Description
Superior Performance	Outperforms EVA, PU, and PE foams in heat resistance, strength, and environmental safety
Customizable	Available in sheets, rolls, die-cut parts; thickness from 0.5mm to 70mm; density from 30-120 kg/m³
EV Industry Proven	Widely used in new energy vehicle battery packs for cushioning and thermal management
Clean Production	Supercritical CO₂ foaming technology-no chemical residues, no VOC emissions
Fast Sample Turnaround	Samples available within 3-5 business days

Product Forms Available

Form	Description
Sheets	Custom sizes and thicknesses (0.5mm – 70mm)
Rolls	Thin gauge rolls for continuous applications
Die-Cut Parts	Precision cut to customer specifications
Laminated Products	With adhesive backing

Comparison: MPP Foam vs Traditional Foams

Property	MPP Foam	EVA Foam	PU Foam	PE Foam
Max Service Temp	120°C	60-80°C	80-90°C	70-80°C
Density Range	30-120 kg/m³	30-200 kg/m³	20-300 kg/m³	20-100 kg/m³
Water Absorption	<0.1%	>1%	>2%	<0.5%
Recyclable	Yes	No (crosslinked)	No (thermoset)	Limited
VOC Emissions	Zero	Moderate	High	Low
Flame Retardant Options	Yes (HF-1)	Limited	Yes	Limited
Best For	High-temp, structural,environmentally applications	General cushioning	Seating, comfort	Packaging

Certifications

Standard	Status
RoHS	✅ Compliant
REACH	✅ Compliant
UL94 HF-1 (FR grade)	✅ Available
Food Contact Safe	✅ Available
IATF 16949	✅ Available upon request

Packaging & Storage

Item	Information
Packaging	Carton boxes with anti-static bags (ESD options available)
Storage Conditions	Store in dry, cool environment (<40°C, <70% RH), avoid direct sunlight
Shelf Life	24 months in original sealed packaging

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