Other

Sanyo Chemical Industries, Ltd.

Tomokazu Shimizu

Akira Inoue

Tsuyoshi Tomosada

Kengo Ozaki

Yasushi Kumagai

Masamichi Taguchi

Shinzou Kaida

Misao Okamoto

Shinzo Kaida

Kaoru Yamazaki

Tadaaki Yamazaki

Honeycomb core material for sandwich structure and method for manufacturing the same

An inorganic/organic composite foam that has a foam structure obtained from a combination of a phosphoric acid compound and/or a sulfuric acid compound with a blowing agent therefor, has reduced brittleness due to a cured material of an urethane prepolymer having NCO groups, and contains a powdery boric acid compound, and a process for producing the same. The foam is not only reduced in brittleness but also improved in foam strength after combustion due to the incorporation of the powdery boric acid compound while retaining inherent foam properties and inherent low quantities of heat of combustion and smoking in combustion. It is used in exterior wall panels, heat insulating materials, sound insulating materials, fireproof covering materials, lightweight aggregates, filling materials for cavities, and the like, which are required to have fire-proofing performance.

Inorganic/organic composite foam and process for producing the same

A inorganic-organic composite foam having a structure comprising phosphoric acids and a blowing agent for phosphoric acids, wherein the brittleness is improved by urethane prepolymer having NCO groups. The foam is produced by foaming and curing by mixing each component of phosphoric acids, a blowing agent for phosphoric acids, urethane prepolymer having NCO groups, water, and, if necessary, an inorganic filler. A foam of phosphoric acids is inherently brittle, but the brittleness is improved, and flexibility and rebound resilience can be provided. The foam of the present invention is effectively used for the applications, for example, heat insulating materials of external panel or internal panel which require the fire preventive property of train, automobile, housing, building etc.; sound absorbent materials for floor or wall; fire preventive or fireproof materials; heat insulating materials for fireproof safe, freezer, refrigerator; fireproof covering materials; light-weight aggregate; gap filler; synthetic wood having fire preventive property and the like.

Inorganic-organic composite foam and process for the production thereof

Growing community of inventors

Kyoto, Japan

Tomokazu Shimizu