LDPE Powder | LDPE polyethylene micropowder for SMC BMC pultrusion
LDPE Powderserves as a high-performance additive for fiberglass reinforced plastic (FRP), widely applied in SMC, BMC/DMC, RTM and pultrusion processes.
Our LDPE micropowder is specially developed to reduce chemical shrinkage of thermoset resin, upgrade surface finish and minimize friction drag during continuous pultrusion production. It becomes an essential formulation ingredient for FRP composite manufacturers targeting stable part quality.
LDPE Powder | Low density polyethylene powder thermoset resin additive
| Item | Typical Value | Unit | Test Standard |
| Appearance | Ultra-fine white powder | โ | Visual Inspection |
| Particle Size D50 | 10โ15 | ฮผm | Wet Laser Particle Analysis |
| Particle Size D97 | <75 | ฮผm | Wet Laser Particle Analysis |
| Melt Index (190โ/2.16kg) | 40โ65 | g/10min | GB/T 3682 |
| Density | 0.910โ0.930 | g/cmยณ | GB/T 1033 |
LDPE Powder | Polyethylene micro powder to reduce chemical shrinkage
Application & Recommended Dosage
1. SMC, BMC/DMC, RTM Molding
Addition rate: 1%โ8% based on total formulation.
Adjust dosage according to product geometry, pigment and filler types.
2. Continuous Pultrusion Process
Addition rate: 1%โ5% relative to resin weight
Thin-wall profiles: Recommended dosage 2%โ3%
Thick-wall profiles: Recommended dosage 3%โ5%
Products requiring ultra-smooth surface: Increase dosage properly within formula compatibility range
Outstanding Product Features
- Beautify surface appearance and significantly boost gloss of finished FRP products
- Enhance dispersion of pigments and fillers for uniform color and silky smooth surface
- Lower water absorption rate of composite parts
- Restrain stress cracking and microcrack formation
- Control molding shrinkage and enhance dimensional stability
- Optimize mechanical properties and low-temperature resistance of FRP
- Deliver auxiliary internal mold release effect during production
- Solve typical pultrusion defects: scarring, slag dropping and surface peeling.
Smooth pultrusion operation even when glass fiber content below 50%. Effectively eliminate groove marks on large & complex pultruded profiles.
Why Choose Camp-Shinning LDPE Polyethylene Micropowder?
โ
Spherical particle shape, excellent uniformity and dispersion in thermoset resin
โ
Stable particle size distribution, consistent performance batch to batch
โ
Efficient low-shrink function without compromising composite mechanical performance
โ
Great performance for both batch compression molding and continuous pultrusion lines
โ
Factory direct supply, stable stock & flexible support for custom trial orders
Frequently Asked Questions
Q1: What is the core function of LDPE polyethylene micropowder in thermoset composites?
A:
LDPE powderย mainly reduces resin chemical shrinkage, improves surface aesthetics, works as processing aid to cut friction drag in pultrusion, and prevents common surface defects on FRP parts.
Q2: Can this PE micropowder be used for all pultrusion profiles?
A: Suitable for most fiberglass reinforced pultruded profiles. It works well for thin-wall, thick-wall and complex structural profiles, effectively removing groove marks.
Q3: How much LDPE micropowder should I start testing in my formula?
A: For pultrusion, start trial at 2โ3% resin loading; for SMC/BMC, start at 3โ5% of total formula. Fine-tune based on your finished surface requirements.
Q4: Is this polyethylene powder compatible with unsaturated polyester resin?
A: Yes, LDPE powderย shows excellent compatibility with common thermoset resin systems used in FRP industry.
Contact Us for Samples & Technical Support
Request free trial sample and technical data sheet (TDS). Our composite material specialist can offer formulation guidance for your SMC, BMC or pultrusion production line.
Whatsapp:ย +86-13185071071
Mail:ย [email protected]ย