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434272

Sigma-Aldrich

Polyethylene

Ultra-high molecular weight, surface-modified, powder, 34-50 μm particle size

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Synonym(s):
UHMWPE
Linear Formula:
H(CH2CH2)nH
CAS Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

form

powder

mol wt

(Ultra-high molecular weight)

particle size

34-50 μm

mp

144 °C

transition temp

Tm (DSC) 144 °C (at peak)

density

0.94 g/mL at 25 °C

InChI

1S/C2H4/c1-2/h1-2H2

InChI key

VGGSQFUCUMXWEO-UHFFFAOYSA-N

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This Item
434264429015427772
Polyethylene Ultra-high molecular weight, surface-modified, powder, 34-50 μm particle size

Sigma-Aldrich

434272

Polyethylene

Polyethylene Ultra-high molecular weight, surface-modified, powder, 125 μm avg. part. size

Sigma-Aldrich

434264

Polyethylene

Polyethylene Ultra-high molecular weight, average Mw 3,000,000-6,000,000

Sigma-Aldrich

429015

Polyethylene

Polyethylene average Mw ~4,000 by GPC, average Mn ~1,700 by GPC

Sigma-Aldrich

427772

Polyethylene

mp

144 °C

mp

146 °C

mp

-

mp

92 °C

transition temp

Tm (DSC) 144 °C (at peak)

transition temp

Tm (DSC) 146 °C (at peak)

transition temp

softening point 136 °C (Vicat, ASTM D 1525B), Tm 138 °C (DSC)

transition temp

softening point 106 °C (ring and ball)

density

0.94 g/mL at 25 °C

density

0.94 g/mL at 25 °C

density

0.94 g/mL at 25 °C

density

0.92 g/mL at 25 °C

mol wt

(Ultra-high molecular weight)

mol wt

(Ultra-high molecular weight)

mol wt

average Mw 3,000,000-6,000,000

mol wt

average Mn ~1,700 by GPC, average Mw ~4,000 by GPC

particle size

34-50 μm

particle size

-

particle size

-

particle size

-

Application

Additive to unsaturated polyesters, epoxides and other polymers to impart the unique properties of UHMWPE. Used in industrial parts, coatings and wear surfaces at 10-40 wt. %.

Features and Benefits

Polar surface groups assist chemical and physical bonding to matrix material. Contributes superior abrasion resistance, reduced coefficient of friction, enhanced tear strength and improved moisture resistance. Easier to process in particle form than molten UHMWPE.

Physical form

Particle surface is modified to contain acid and hydroxy groups.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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