High-strength composite material and process for producing the same

• US 5,391,437 A
• Filed: 08/20/1993
• Issued: 02/21/1995
• Est. Priority Date: 05/22/1989
• Status: Expired due to Fees

• Current Assignee: Nippon Kayaku Company Limited
• Original Assignee: Nippon Kayaku Company Limited
• Inventors: Miyasaka, Takaaki, Kajikawa, Akira, Kiyomoto, Masayuki, Mano, Motokazu, Sakurai, Hiroshi
• Primary Examiner(s): NAKARANI, DHIRAJLAL S
• Application Number:
  US08/110,644
• Time in Patent Office: 550 Days
• Field of Search: 428/329, 428/330, 428/331, 428/423.1, 428/424.4, 428/425.5, 428/425.9, 428/688, 524/425, 524/430, 524/446, 427/337, 427/372.2, 427/385.5, 427/393.6
• US Class Current: 428/425.5
• CPC Class Codes: C04B 26/02 Macromolecular compounds
• CPC Class Codes: C04B 26/16 Polyurethanes
• CPC Class Codes: Y10T 428/31551 Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31598 Next to silicon-containing [silicone, cement, etc.] layer
• CPC Class Codes: Y10T 428/31609 Particulate metal or metal compound-containing

Abstract

A high-strength composite material obtained by kneading a mixture comprising a non-hydraulic inorganic material, a water-soluble polymer and water, molding the kneaded mixture, drying the thus molded material and, optionally, treating the dried molded material with an isocyanate compound, and a process for producing a high-strength composite material which comprises the steps of kneading a mixture comprising a non-hydraulic inorganic material, a water-soluble polymer and water, molding the kneaded mixture, and drying the thus molded material.

Claims

1. A composite material having a flexural strength of 244 to 1191 kgf/cm² which is obtained by kneading a mixture comprising a non-hydraulic inorganic material selected from the group consisting of blast-furnace slag powder, silica fume, fly ash, silica sand, silica rock powder, calcium carbonate, talc, clay, zeolite, pearlite, diatomaceous earth, kaolin, alumina, titania and zirconia, a water-soluble polymer and water, the water being present in an amount of 5 to 30% by weight based on the non-hydraulic inorganic material, molding the kneaded mixture, and drying the thus molded material.

2. A high-strength composite material according to claim 1, wherein the water-soluble polymer is a water-soluble polymer having the -OH group.

3. A composite material according to claim 1, obtained by treating the dried molded material with an isocyanate compound.

4. A process for producing a composite material having a flexural strength of 244 to 1191 kgf/cm² which comprises the steps of kneading a mixture comprising a non-hydraulic inorganic material selected from the group consisting of blast-furnace slag powder, silica fume, fly ash, silica sand, silica rock powder, calcium carbonate, talc, clay, zeolite, pearlite, diatomaceous earth, kaolin, alumina, titania and zirconia, a water-soluble polymer and water, the water being present in an amount of 5 to 30% by weight based on the non-hydraulic inorganic material, molding the kneaded mixture, and drying the thus molded material.