Morphology of integral (structural) polymer foams

Shutov, F.

doi:10.1002/masy.19860020113

Makromolekulare Chemie. Macromolecular Symposia

1986

DOI: 10.1002/masy.19860020113

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Morphology of integral (structural) polymer foams

F. Shutov

Abstract: The survey deals with the fundamental morphological parameters of integral (structural) polymer foams, which have a specific structure: a cellular core that gradually turns into a solid skin. Attempts are made to evaluate the effect and the contribution of the main parameters (the core, the skin, and the intermediate zone) on the strength properties of these foams. Further problems in the morphology of integral foams are discussed.

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1996

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Research of HCFC Blown Integral Skin Foam[UNKNOWN]mMorphology Study

Lee¹,

Tsai²,

Yuh³

1996

Journal of Cellular Plastics

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HCFCs are well-known to be the most likely liquid candidates which would replace CFC-11 as the blowing agent for polyurethane rigid foam and polyurethane integral skin foam. HCFC-123 (CHCI2CF3) is utilized in this research effort for replacing the conventionally used CFC-11 (CCl3F) in the polyurethane integral skin foam with ozone depletion potential (ODP) level as high as 1.0. CFCs should be phased out prior to 1996. First, suitable polyurethane integral skin foam is selected from formulation screen bench tests which employ HCFC-123 as the physical blowing agent (optimal chain extender/amine catalyst/organotin catalyst combination). Second, the formulation is scaled up to a pilot plant type line. Additionally, SEM (Scanning Electronic Microscopy) technology is used to study the influence of the factors (i.e. the blowing agent, the overall density, the processing parameters and the position of the product) on intermediate layer morphology. A morphology model has already been proposed by Shutov (morphology of integral polymer foams[UNKNOWN]mMacromol. Chem., Macromol. Symp. 2, 1986) which concerns itself with the intermediate layer between the skin and the core foam of polyurethane integral skin foam. Polyurethane integral skin foam intermediate layer morphology by SEM technology has not yet been reported in previous literature. Applying SEM technology toward studying the polyurethane integral skin foam intermediate layer is a topic of valuable interest. The research information contained within could be presented as a reference for the complete replacement of CFCs in the polyurethane integral skin foam which, subsequently, would be aimed toward the final goal of solving global environmental problems caused by the ozone layer depletion from CFCs.

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Research of HCFC Blown Integral Skin Foam[UNKNOWN]mMorphology Study

Lee¹,

Tsai²,

Yuh³

1996

Journal of Cellular Plastics

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show abstract

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Morphology of integral (structural) polymer foams

Cited by 1 publication

References 7 publications

Research of HCFC Blown Integral Skin Foam[UNKNOWN]mMorphology Study

Research of HCFC Blown Integral Skin Foam[UNKNOWN]mMorphology Study

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