Non-combustible light-weight inorganic shaped articles and process of manufacture
AssigneeSekisui Kagaku Kogyo Kabushiki Kaisha
InventorsTadashi Matsuda, Kazuo Tanaka, Kazuma Taura
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Abstract
A method of producing a non-combustible light-weight shaped article, which comprises shaping a mixture comprising (a) powders of silicon or a silicon alloy, (b) inorganic powders having a porous or hollow structure and (c) water glass, and maintaining the resulting shaped article at a temperature of 15.degree. to 120.degree.C. thereby to foam and cure it.
Claims10
A method of producing a non-combustible light weight shaped article, which consists essentially of shaping a mixture consisting essentially of:
- a. 100 parts by weight of powders of silicon or a silicon alloy containing at least 50% by weight of silicon,
- b. 100-200 parts by weight of inorganic powders having a porous or hollow structure,
- c. 100-1200 parts by weight of water glass,
- d. up to 80 parts by weight, per 100 parts by weight of the sum total of (a), (b) and (c), of a fibrous material and
- e. up to 80 parts by weight, per 100 parts by weight of the sum total of (a), (b), and (c), of a fire-proofness improving agent;
- compressing the resulting shaped article until the bulk density of the shaped article is increased to 1.5 to 12 times that before shaping;
- and
- maintaining the resulting shaped article at a temperature of 15.degree.-120.degree.C. thereby to foam and cure it.
A method of continuously producing a non-combustible light-weight shaped article which consists essentially of:
- 1. compression molding a mixture consisting essentially of:
- a. 100 parts by weight of powders of silicon or a silicon alloy containing at least 50% by weight of silicon,
- b. 100-200 parts by weight of inorganic powders having a porous or hollow structure,
- c. 100-1200 parts by weight of water glass,
- d. up to 80 parts by weight, per 100 parts by weight of the sum total of (a), (b) and (c), of a fibrous material and
- e. up to 80 parts by weight, per 100 parts by weight of the sum total of (a), (b) and (c), of a fire-proofness improving agent by feeding it into a compression space formed between an endless belt, the inside surface of which contacts compression rolls and a feed plate moving at substantially the same speed as the endless belt and in the same direction as the movement of the endless belt, to an extent such that the bulk density of the compressed article is 1.5 to 12 times that of the shaped article before compression, and
- 2. introducing the shaped article into reaction chambers maintained at a temperature of 15.degree. to 120.degree.C. thereby to foam and cure the shaped article.
Dependencies are inferred from the claim text.