KR970069916A

KR970069916A - How to make new foamed glass

Info

Publication number: KR970069916A
Application number: KR1019960012015A
Authority: KR
Inventors: 현부성; 김무경
Original assignee: 장기중; 요업기술원
Priority date: 1996-04-19
Filing date: 1996-04-19
Publication date: 1997-11-07
Also published as: KR100194107B1

Abstract

발포유리(發泡유리, foam glass, multicellular glass)란 균질한 독립기공조직으로 이루어진 유리로서, 기공율이 매우 높아 단열재, 흡음재 등으로 이용되는 재료이다. 발포유리는 미분의 유리가루와 적당량의 발포제를 혼합하여 이것을 가열하여 소결 및 발포시킨 후 서냉하므로서 제조된다. 이 때 발포제로는 일반적으로 탄산칼슘(CaCO₃), 돌로마이트(CaCO₃ㆍMgCO₃), 카본(C), 실리콘카바이드(SiC)등을 사용하는데 탄산칼슘이나 돌로마이트를 사용한 경우에는 기공이 연속되어 통기성이 있는 스폰지 조직이 되어 경량이지만 흡수성을 갖는 결정이 있다. 또한 카본을 발포제로 사용한 경우에는 독립기공조직을 만들어 주기 위해서는 분당 30∼50℃의 급속한 승온이 필요한다. 이러한 조건이 충족되지 않으면 독립기공이 손상되고 이상발포가 일어난다. 실리콘카바이드를 발포제로 하는 경우에는 1150℃ 이상의 고온에서 소성해야만 발포유리를 제조할 수 있다. 이상의 설명과 같은 단점을 보완하기 위하여 본 발명에서는 발포유리 제조에 있어서 수산화인산칼슘화합물(hydroxy apatite, calcium orthophosphate, dicalcium phosphate hydrate 등)을 발포제로 사용하여 발포유리를 제조하면 위의 설명과 같은 발포유리 제조상의 문제점들의 연속기공, 이상발포에 의한 형태 변형, 급속한 승온, 고온소결 등을 해결할 수 있다.Foam glass (foam glass, multicellular glass) is a glass made of homogeneous and independent pore structure. It is a material used for insulation and sound absorbing materials because of its high porosity. The foamed glass is produced by mixing fine powder of glass powder and a suitable amount of foaming agent, heating it, sintering and foaming, and then slowly cooling it. In this case, calcium carbonate (CaCO ₃ ), dolomite (CaCO ₃ .MgCO ₃ ), carbon (C) and silicon carbide (SiC) are generally used as the foaming agent. When calcium carbonate or dolomite is used, Which is a lightweight but absorbent crystal. Also, when carbon is used as a blowing agent, a rapid temperature rise of 30 to 50 ° C per minute is required in order to make an independent pore structure. If these conditions are not met, the independent pores are damaged and abnormal foaming occurs. When silicon carbide is used as the blowing agent, the foamed glass can be produced only by baking at a high temperature of 1150 DEG C or higher. In order to compensate for the disadvantages described above, in the present invention, when a foamed glass is manufactured using a hydroxyapatite, calcium orthophosphate, or dicalcium phosphate hydrate as a foaming agent in the production of foamed glass, Continuous pores of manufacturing problems, shape deformation due to abnormal foaming, rapid temperature rise, high temperature sintering, and the like can be solved.

Description

How to make new foamed glass

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

Claims

A composition obtained by mixing 100 parts by weight of soda lime glass crushed material or waste glass crushed material or glass polishing sludge of 1 mm or less and 2 to 40 parts by weight of hydroxyapatite or other calcium phosphate calcium compound and then sintering and foaming by heat treatment By weight.

A method for producing a foamed glass according to claim 1, wherein a composition comprising 0.5 to 10 parts by weight of an inorganic pigment is formed to give a color to the composition of claim 1, and the composition is sintered and foamed by heat treatment.

A method for producing a foamed glass according to any one of claims 1 to 3, wherein a composition comprising 0.5 to 10 parts by weight of sodium silicate is formed and sintered and foamed by heat treatment to facilitate molding.

Characterized in that a composition comprising 0.5 to 50 parts by weight of a mixture of mineral wastes such as stone, fly ash and red mud is added to the composition of any one of claims 1, 2 and 3 and is sintered and foamed by heat treatment Gt;

※ Note: It is disclosed by the contents of the first application.