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Blowing Agent

Blowing Agent

Blowing agents, be defined as compounds which are thermally unstable and decompose to yield gas at the desired polymer processing temperature, are widely used to ex

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n  Chemical Blowing Agent (CBA)

Blowing agents, be defined as compounds which are thermally unstable and decompose to yield gas at the desired polymer processing temperature, are widely used to expand rubber, plastics to create foam. Most of the chemical blowing agents are organic chemicals, while inorganic chemicals are few.

In accordance with the decomposition mechanism, CBA are generally subdivided into two major categories: exothermic and endothermic. Customers can select the suitable type according to the environmental conditions and actual use.

Many advantages of foamed products can be achieved by choosing the right blowing agents, such as:

²  raw materials and cost saving

²  density reduction

² weight reduction

²  thermal insulation

² noise absorption

²  easy to process

²  impact and shock absorption

²  good looking and comfortable feel.etc


Table 1 Typical property of WELLCELL™ Blowing Agents

Series

Grades

Appearance

Dec. Temp.

°C

Gas yield

ml/g

Typical Application

PF
series

PF-C

Light yellow powder

≥200

≥220

Wallpaper, leather

PF-D

Light yellow powder

≥200

≥220

Wallpaper, floor, leather

PF-G

Yellow powder

≥200

≥220

Board, Profiles

PF-K

Yellow powder

≥200

≥220

Board, Profiles, pipe, Calendering leather

PF-M

Yellow powder

≥200

≥220

Board, Profiles, pipe, Calendering leather

PF-1500

Yellow powder

≥200

≥220

IXPE Foam sheet

MF
series

MF-133

Light yellow powder

160-220

155±5

Celuka Foam Board

MF-133G

Light yellow powder

160-220

175±5

Celuka Foam Board

MF-1408

Light yellow powder

140±5

170±10

Midsole, insole

MF-180

Light yellow powder

158±5

175±10

Artificial Leather

MF-190

Light yellow powder

190±5

200±10

Injection midsole

MF-1500E

Light yellow powder

≥200

≥220

XLPE foam sheet

WF
series

WF-208

White powder

160±5

120±10

PVC foam profile, board, sheet, Slipper

PS
series

PS-255

Light yellow powder

170

170

PS picture frame

PS-356

White powder

210

145

PS board, frame



Table 2 Selection Guide of WELLCELL™ Blowing Agents

ResinTypical ApplicationsProcessing methodRecommended GradesDec. Temp. ℃Gas Yield ml/gCharacteristics
Rigid PVCCeluka or free foam board, sheet, profileExtrusionPF-D, PF-K205220~240Exothermic. Can adjust the decomposition temperature with activators. Higher gas pressure. Used in combine with WF-208.
WF-208150115Endothermic. Faster cooling and no discolor. Finer and uniform cell structure. Used in combine with PF-K.
MF-133, MF-133G160~220150~180Endo-Exothermic. Uniform and fine cell structure. Lower density and smooth surface.
PVC foam core pipeExtrusionPF-D, PF-K205220~245Free flowing. Easy to disperse. Finer and uniform cell structure.
PVC floor coveringExtrusionPF-D, PF-K205220~245Free flowing. Easy to disperse. Finer and uniform cell structure.
Flexible PVCPVC shoes/sandalInjectionPF-D, PF-C205220~245Free flowing. Easy to disperse. Finer and uniform cell structure.
PVC artificial leathercoatingPF-D205220~245Free flowing. Easy to disperse. Finer and uniform cell structure.
MF-180158160~180Low foaming temperature and cost-effective, Prolonging the life of release paper
calenderingPF-K, PF-M205220~245Free flowing. Easy to disperse. Finer and uniform cell structure.
PVC floor leatherExtrusionPF-D, PF-K205220~245Free flowing. Easy to disperse. Finer and uniform cell structure.
PVC wall coveringSpread coatingPF-C205220~245Free flowing. Easy to disperse. Finer and uniform cell structure.
PVC/NBRInsulating sheet/tubeExtrusionPF-D, PF-K205220~245Free flowing. Easy to disperse. Finer and uniform cell structure.
EVA
EVA shoes soleOne stage foamingPF-G, PF-K205220~245Free flowing. Easy to disperse. Finer and uniform cell structure.
Two stage foamingMF-1408135-140170-180Very fine cell structure and excellent physical properties. For Phylon midsole.
InjectionMF-190193±3185±10High temperature process; Fine cell and uniform cell structure
EVA foam sheetsCompression moldingPF-K, PF-M205
220~245Free flowing. Easy to disperse. Finer and uniform cell structure
X-PEXPEChemical Cross-linkingMF-1500E180-186215-235Suitable for the continuous extruded XLPE foaming at ambient pressure.
IXPEIrradiation Cross-linkingPF-1500196-205210-230Suitable for the continuous extruded IXPE foaming at ambient pressure.
PSPS foam productsExtrusionPS-255155170Endo-Exothermic. Especially suitable for the production of PS/HIPS foam frame.
PS-356155145Endothermic. Be used in the production of high quality foaming products with fine foam cells.
WF-208150115Endothermic. Faster cooling and no discolor. Finer and uniform cell structure. Used in combine with PF-K.
PF-K205230±10Exothermic. Can adjust the decomposition temperature with activators. Higher gas pressure. Used in combine with WF-208


n  Typical Application

±  Chemically embossed PVC floor and wall coverings;

±  Spread coated PVC foamed wallpapers;

±  Cross-linked  polyethylene foam sheets for the leisure, automotive and construction industries;

±  Lightweight rigid PVC extruded sheets, profiles and foamed core pipes for the construction industry;

±  Injection molded electronic cabinets and housings;

±  Divers’ wet suits made from CR;

±  PVC/NBR thermal insulation foams and foamed pipeline sheets;

±  Crosslinked injection molded components such as EVA tires and rubber footwear soles;

±  Injection molded or extruded imitation wood for furniture or picture frames made from PS or wood flour filled thermoplastics;

 ±  Rotational molded PE drums, storage tanks.

产品_0009_EVA Foam Board.jpg

EVA Foam Board

产品_0008_NBR foam board.jpg

NBR foam board

产品_0007_Thermal Insulation Pipes.jpg

Thermal Insulation Pipes

产品_0006_Wallpaper.jpg

Wallpaper

产品_0005_Pipe.jpg

Pipe

产品_0004_UPVC foam board.jpg

UPVC foam board


产品_0003_Artificial Leather.jpg

Artificial Leather


产品_0002_Sole.jpg

Sole

产品_0001_Yoga Mat.jpg

Yoga Mat

产品_0000_PVC shoes.jpg

PVC shoes