Technological and Operational Properties of Filling Epoxy Foam Plastics for Construction Purposes

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Resumo

The influence of the chemical nature and content of aliphatic polyamines and reactive modifiers on the technological and physical-mechanical properties, heat resistance and flammability of casting epoxy foam plastics for construction purposes is considered. It is shown that polyepoxide foams obtained using a mixture of polyaminoalkylimidazoline grade UP-0641D and polyethylenepolyamine in a ratio of 4:1 as an amine hardener have high technological and operational characteristics. The influence of the content of a chemical blowing agent (water-repellent liquid grade 136-41) on the apparent density and strength characteristics of casting epoxy foam plastics is revealed. The influence of the chemical nature of epoxy modifiers on the properties of casting polyepoxide foams is considered. It is proposed to use a condensation product of shale resin with hexamethylenetetramine and formaldehyde as an effective modifier for epoxy foam plastics.

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Sobre autores

M. Ushkov

National Research Moscow State University of Civil Engineering

Autor responsável pela correspondência
Email: satory99@mail.ru

Leading Engineer

Rússia, 26, Yaroslavskoe Hwy, Moscow, 129337

S. Samchenko

National Research Moscow State University of Civil Engineering

Email: samchenko@list.ru

Doctor of Sciences (Engineering), Professor

Rússia, 26, Yaroslavskoe Hwy, Moscow, 129337

A. Kopytin

Federal Standardization Center

Email: satory99@mail.ru

Candidate of Sciences (Engineering), Director

Rússia, Fl. 4, 6, Furkasovsky Lane, Moscow, 101000

N. Agafonova

National Research Moscow State University of Civil Engineering

Email: natalya-markiv@mail.ru

Engineer, Lecturer

Rússia, 26, Yaroslavskoe Hwy, Moscow, 129337

V. Ushkov

National Research Moscow State University of Civil Engineering

Email: va.ushkov@yandex.ru

Doctor of Sciences (Engineering), Professor

Rússia, 26, Yaroslavskoe Hwy, Moscow, 129337

Bibliografia

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2. Fig. 1. Dependence of apparent density (1, 2, 3) and degree of curing (1′, 2′, 3′) of epoxy foam plastics on the chemical nature and content of amine hardeners: 1, 1′ – mixture of polyaminoalkylimidazoline grade UP-641D and PEPA in a ratio of 4:1; 2, 2′ – UP-641D; 3, 3′ – UP-640D

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3. Fig. 2. Kinetics of strength gain in compression (1, 2, 3) and bending (1′, 2′, 3′) of epoxy foam plastics depending on the chemical nature of amine hardeners: 1, 1′ – a mixture of polyaminoalkylimidazoline grade UP-641D and PEPA; 2, 2′ – UP-641D; 3, 3′ – UP-640D

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4. Fig. 3. Dependence of the apparent density of epoxy foams on the content of the chemical blowing agent and the nature of the amine hardener: 1 – polyaminoalkylimidazoline grade UP-0641D; 2 – mixture of UP-0641D and PEPA in a ratio of 4:1

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5. Fig. 4. Thermogravimetric curves of epoxy foams based on: 1 – UP-0641D; 2 – UP-0641D and PEPA; 3 – UP-545 (13.3%); 4 – UP-563 (13.3%); 5 – UP-563 and diphenyl (2-ethylhexyl) phosphate (13.3%)

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6. Fig. 5. Physical and mechanical properties of epoxy foam plastics modified with shale resin: 1 – apparent density; 2, 3 – water absorption after 1 and 3 days, respectively; 4 – breaking stress under compression

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7. Fig. 6. Dependence of the destructive stress under compression of modified casting epoxy foam plastics on their apparent density: 1 – PPE modified with MCC; 2 – original PPE; 3 – PPE modified with epoxy resin grade UP-563

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