KR100263949B1 - A gypsum cement plate without asbestos - Google Patents

A gypsum cement plate without asbestos Download PDF

Info

Publication number
KR100263949B1
KR100263949B1 KR1019980009905A KR19980009905A KR100263949B1 KR 100263949 B1 KR100263949 B1 KR 100263949B1 KR 1019980009905 A KR1019980009905 A KR 1019980009905A KR 19980009905 A KR19980009905 A KR 19980009905A KR 100263949 B1 KR100263949 B1 KR 100263949B1
Authority
KR
South Korea
Prior art keywords
asbestos
gypsum cement
pulp
cured
cement plate
Prior art date
Application number
KR1019980009905A
Other languages
Korean (ko)
Other versions
KR19990075608A (en
Inventor
남승룡
박진형
강종규
이상학
이중남
Original Assignee
주식회사벽산
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사벽산 filed Critical 주식회사벽산
Priority to KR1019980009905A priority Critical patent/KR100263949B1/en
Publication of KR19990075608A publication Critical patent/KR19990075608A/en
Application granted granted Critical
Publication of KR100263949B1 publication Critical patent/KR100263949B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • C04B18/241—Paper, e.g. waste paper; Paper pulp
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/02—Selection of the hardening environment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/14—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Producing Shaped Articles From Materials (AREA)

Abstract

PURPOSE: An asbestos-free gypsum cement plate is provided for avoiding air-pollution due to the asbestos material by utilizing needle-shaped leaf pulp, regenerated pulp and polyacrylone nitrile as the reinforcing materials in the conventional gypsum cement plate to reduce bulk specific gravity thereof. CONSTITUTION: The asbestos-free gypsum cement plate is prepared by blending 1-7% of bleached needle leaf pulp, 1-5% of regenerated pulp and 0.1-5% of polyacrylone nitrile fibers as the reinforcing materials; adding 1-15% of sepiolite, 1-15% of mica and 5-15% of silica stone powders to the reinforcing materials to form the raw mixture; adding to the mixture with water to regulate the solid content of about 20% and blending it for 6 minutes or more to form the slurry type material; again add to the slurry with water to control the solid content to less than 1-15%. Afterward, the resultant material forms a plate of determined thickness by means of annular net type paper machine and is cured firstly at 40-60 deg.C. for 48 hours, then at room temperature for one day. The cured material is dried at 70-80 deg.C. for 80-100 minutes, cut into determined size, is under pressing and then completed after final coating process.

Description

무석면 석고 시멘트판Asbestos gypsum cement board

본 발명은 석면을 사용하지 않고 제조된 무석면 석고 시멘트판에 관한 것이다.The present invention relates to a non-asbestos gypsum cement board produced without the use of asbestos.

종래의 석고 시멘트판은 석고, 시멘트 및 필요한 골재로 된 배합물에 주 보강섬유로서 석면을 사용하고 환망 또는 장막식 초조기를 이용해 판상으로 제조하는 방법이 사용되어 왔다.Conventional gypsum cement boards have been used to produce asbestos as a main reinforcing fiber in a combination of gypsum, cement, and the required aggregates, and to produce a plate using a mesh screen or a tenter.

종래의 제법에서 보강 섬유로 널리 사용되어 왔던 석면은 환경 오염 문제를 야기시킬 수 있는 물질로 유해성 논란이 끊이지 않아 사용의 제한 내지는 규제 정책이 강하게 요청되고 있다. 따라서 석면 이외의 섬유를 보강섬유로 하는 천정재용 석고 시멘트판을 제조할 필요가 생기게 되었다.Asbestos, which has been widely used as a reinforcing fiber in the conventional manufacturing method, is a substance that can cause environmental pollution problems. Therefore, there is a constant demand for restriction or regulatory policy because of harmful controversy. Therefore, there is a need to manufacture a gypsum cement board for ceiling materials using fibers other than asbestos as reinforcing fibers.

또한, 기존 석고 시멘트판은 비중이 높아 취급 및 시공에 불편을 초래한다.In addition, the existing gypsum cement sheet has a high specific gravity, causing inconvenience in handling and construction.

일본특허 공개공보 특개평 5-345308은 무석면 섬유보강 시멘트판의 제조 방법을 소개하고 있으나, 기존의 무석면 제품은 시멘트, 소석회, 규석분, 규조토 등을 원료로 하고 수열합성 반응을 일으키기 위해 고온, 고압의 오토크레이브(Autoclave)의 양생법을 적용하나 이는 제조원가의 상승요인으로 작용하고, 석면의 대체 파이버(fiber)로 사용되는 셀루로오즈(Cellulose)를 분체 원료와 혼합전에 사전 해면을 시켜 사용해야만 했다.Japanese Patent Laid-Open Publication No. 5-345308 introduces a method for producing a non-asbestos fiber reinforced cement board, but conventional non-asbestos products are made of cement, hydrated lime, silica powder, diatomaceous earth, etc., to produce a hydrothermal synthesis reaction. Autoclave's curing method is applied, but this acts as a synergistic factor of manufacturing cost, and cellulose, which is used as an alternative fiber for asbestos, has to be pre-sealed before mixing with powder raw materials.

본 발명의 목적은 상기 문제점을 해결하기 위하여 석면을 사용하지 않고 침엽표백펄프와 재생펄프, 폴리아크릴론니트릴을 보강 섬유로 사용하여 환경 오염 문제를 해결할 수 있고, 기존 석고 시멘트판보다 취급 및 시공이 간편하고 천정재로서 필요한 품질수준(강도, 치수안정성)을 유지하도록 부피비중을 낮춘 무석면 석고 시멘트판을 제공하고자 하는 것이다.The purpose of the present invention is to solve the above problems by using coniferous bleached pulp, recycled pulp, polyacrylonitrile as reinforcing fibers without asbestos, and to solve the environmental pollution problem, and handling and construction than conventional gypsum cement board It is to provide a non-asbestos gypsum cement board with a low specific gravity to maintain the required level of quality (strength, dimensional stability) as a simple and ceiling material.

본 발명의 무석면 석고 시멘트판의 혼합 재료는 시멘트와 반수석고를 보강섬유로 사용하는 침엽표백펄프 1∼7%, 재생펄프 1∼5%, 폴리아크릴론니트릴계 섬유 0.1∼5%에 혼합하고, 세피오라이트 1∼15%, 운모 1∼15% 및 규석분 5∼15%의 비율로 배합된 첨가제를 추가하여 조성된다.The mixed material of the asbestos-free gypsum cement board of the present invention is mixed with 1-7% of conifer bleaching pulp, 1-5% recycled pulp and 0.1-5% polyacrylonitrile-based fiber using cement and hemihydrate gypsum as reinforcing fibers, It is formed by adding an additive blended in the proportion of 1 to 15% of sepiolite, 1 to 15% of mica and 5 to 15% of silica.

본 발명을 실시예를 참조하여 상세히 설명한다.The present invention will be described in detail with reference to Examples.

본 발명의 무석면 석고 시멘트판의 원료는 시멘트(제 1 종 보통 포틀랜드 시멘트), 반수석고 골재와 보강 섬유, 첨가제를 사용한다.As a raw material of the asbestos-free gypsum cement board of the present invention, cement (Class 1 ordinary portland cement), hemihydrate gypsum aggregate, reinforcing fibers, and additives are used.

보강섬유로는 침엽표백펄프, 재생펄프 및 폴리아크릴론니트릴(Poly-acrylonitrile)계 섬유를 사용한다. 이때 각각의 섬유의 배합량은 침엽표백펄프 1∼7%, 재생펄프 1∼5%, 폴리아크릴론니트릴계 섬유 0.1∼5%이다.As the reinforcing fibers, conifer bleaching pulp, recycled pulp, and polyacrylonitrile-based fibers are used. At this time, the blending amount of each fiber is 1-7% of conifer bleaching pulp, 1-5% regenerated pulp, and 0.1-5% polyacrylonitrile fiber.

첨가제는 부피 비중을 낮추고 난연성능, 부착성, 치수안정성 등을 높이기 위해 사용하며 세피오라이트(Sepiolite), 운모(Mica), 규석분을 사용하고 그 배합량은 세피오라이트 1∼15%, 운모 1∼15%, 규석분 5∼15%이 되도록 한다.Additives are used to reduce the specific gravity of the volume and to increase the flame retardancy, adhesion, dimensional stability, etc., and use sepiolite, mica, and silica powder. The silica content is 5-15%.

한편, 초조 성능을 향상시키기 위해 석고와 시멘트 혼합물의 응결 시간을 KS-F-3507 응결 시험법에 따라 40-90분이 되도록 한다.On the other hand, the condensation time of the gypsum and cement mixture is to be 40-90 minutes according to the KS-F-3507 condensation test method in order to improve the initial performance.

본 발명의 원료 혼합물에 물을 가해 고형분 농도를 20%로 맞춘 후 6분 이상 1회 믹싱하여 슬러리를 만들고, 물의 재공급을 통해 고형분 농도가 1∼15% 이하로 되도록 조정한 후, 환망식 초조기에 의하여 초조하여 소정두께로 제판하고 그 성형물을 40∼60℃에서 48시간 정온 양생한 후 1 일간 상온에서 양생한다.Water was added to the raw material mixture of the present invention to adjust the solid content concentration to 20%, and then mixed once or more for 6 minutes to form a slurry, and after adjusting the solid content concentration to 1 to 15% or less through resupply of water, It is precipitated early and is plated to a predetermined thickness, and the molded product is cured at a constant temperature for 48 hours at 40 to 60 ° C, and then cured at room temperature for 1 day.

이 양생체를 70 내지 80℃에서 80 내지 100분간 건조 후 소규격으로 절단하고 무늬 프레스한 후 도장을 한다.This cured product is dried at 70 to 80 ° C. for 80 to 100 minutes, cut into small specifications, patterned, and then coated.

본 발명에 따라 제조된 무석면 석고 시멘트판의 제품 품질 데이터를 표 1에 나타내었다.Product quality data of the asbestos-free gypsum cement board manufactured according to the present invention is shown in Table 1.

[표 1]TABLE 1

본 발명의 실시예의 제조공정은 다음과 같다.The manufacturing process of the Example of this invention is as follows.

생산방식 : 환망식 초조Production Method: Fantastic Echo

1차 양생 : 45℃ , 90 시간Primary curing: 45 ℃, 90 hours

자연양생 : 52 시간(20℃)Natural Curing: 52 hours (20 ℃)

Chest 농도 : 18%Chest concentration: 18%

Vat 농도 : 11.5%Vat concentration: 11.5%

상기에 나타낸 표 1의 본 발명에 따른 제품 품질을 살펴보면, 비중이 기존 석고 시멘트판보다 적어지는 것을 알 수 있다.Looking at the product quality according to the present invention of Table 1 shown above, it can be seen that the specific gravity is less than the conventional gypsum cement board.

본 발명의 무석면 석고 시멘트판은 석면을 사용하지 않기 때문에 환경 오염에 대한 영향이 없고, 천정재로 사용될 수 있도록 기존 석면 함유 석고 시멘트판보다 부피 비중을 낮추어 취급 및 시공이 용이하게 하는 효과를 제공한다.Asbestos-free gypsum cement board of the present invention does not use asbestos, so there is no effect on environmental pollution, and provides an effect of lowering the volume specific gravity than conventional asbestos-containing gypsum cement board to facilitate handling and construction. .

Claims (1)

보강섬유로 사용하는 침엽표백펄프 1∼7%, 재생펄프 1∼5%, 폴리아크릴론니트릴계 섬유 0.1∼5%에 세피올라이트 1∼15%, 운모 1∼15% 및 규석분 5∼15%의 배합비로 조성된 원료 혼합물을 배합하고, 여기에 물을 가해 고형분 농도 20%로 맞춘 후 6분이상 1회 믹싱하여 슬러리를 만들고, 물의 재공급을 통해 고형분 농도 1∼15% 이하로 맞춘 후 환망식 초조기에 의하여 초조하여 소정 두께로 제판하고 그 성형물을 40∼60℃에서 48 시간 정온 양생한 후 1 일간 상온에서 양생하며, 이 양생체를 70∼80℃에서 80 내지 100 분간 건조 후 소규격으로 절단하고 무늬 프레스한 후 도장을 하여 이루어지는 무석면 석고 시멘트판.1-7% of conifer bleaching pulp used as reinforcing fiber, 1-5% regenerated pulp, 0.1-5% polyacrylonitrile fiber, 1-15% sepiolite, 1-15% mica and 5-15 After mixing the raw material mixture prepared in the ratio of%, add water to 20% of solids concentration, mix once more than 6 minutes to make slurry, and adjust the concentration of solids to 1 ~ 15% or less by resupply of water. It is irritated by an annular type agitator and plated to a predetermined thickness. The molded product is cured at 40 to 60 ° C. for 48 hours, and then cured at room temperature for 1 day. The cured body is dried at 70 to 80 ° C. for 80 to 100 minutes, and then Asbestos-free gypsum cement board made by cutting to size and pressing after pattern.
KR1019980009905A 1998-03-23 1998-03-23 A gypsum cement plate without asbestos KR100263949B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019980009905A KR100263949B1 (en) 1998-03-23 1998-03-23 A gypsum cement plate without asbestos

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980009905A KR100263949B1 (en) 1998-03-23 1998-03-23 A gypsum cement plate without asbestos

Publications (2)

Publication Number Publication Date
KR19990075608A KR19990075608A (en) 1999-10-15
KR100263949B1 true KR100263949B1 (en) 2000-08-16

Family

ID=19535218

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019980009905A KR100263949B1 (en) 1998-03-23 1998-03-23 A gypsum cement plate without asbestos

Country Status (1)

Country Link
KR (1) KR100263949B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101065495B1 (en) 2003-12-31 2011-09-19 주식회사 케이씨씨 Asbestos-Free Cement Composition of fire-resistant for extrusion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100966322B1 (en) * 2008-06-17 2010-06-28 ㈜익성텍 Panel manufacturing composition and its process and its panel product with fireproof resistance

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0375253A (en) * 1989-08-14 1991-03-29 Asuku:Kk Fire-resistant asbestos-free hardened gypsum material and production thereof
JPH06293546A (en) * 1993-04-08 1994-10-21 Sekisui Chem Co Ltd Production of hydraulic and inorganic material molding

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0375253A (en) * 1989-08-14 1991-03-29 Asuku:Kk Fire-resistant asbestos-free hardened gypsum material and production thereof
JPH06293546A (en) * 1993-04-08 1994-10-21 Sekisui Chem Co Ltd Production of hydraulic and inorganic material molding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101065495B1 (en) 2003-12-31 2011-09-19 주식회사 케이씨씨 Asbestos-Free Cement Composition of fire-resistant for extrusion

Also Published As

Publication number Publication date
KR19990075608A (en) 1999-10-15

Similar Documents

Publication Publication Date Title
US4132555A (en) Building board
CN100537469C (en) Fibre-reinforced cement compound external wall panel and method of producing the same
US4101335A (en) Building board
EP0127960B1 (en) A process for the manufacture of autoclaved fibre-reinforced shaped articles
EP0263723B1 (en) A process for manufacture of fibre-reinforced shaped articles
KR100263949B1 (en) A gypsum cement plate without asbestos
EP0047158B2 (en) A process for the manufacture of fibre reinforced shaped articles
DE2461781A1 (en) Fibre reinforced fire-resistant building board - contg. organic fibres and free of asbestos
EP0287962A1 (en) Fibre-reinforced shaped article and process for its production
JPH03112842A (en) Production of fiber cement board
JP2002362959A (en) Production process of ceramic exterior wall material
JPH01239045A (en) Production of fiber-reinforced cement board
JPH01108141A (en) Production of asbestos-free slag gypsum board
JP2582834B2 (en) Papermaking method of non-asbestos calcium silicate plate
JPH0323248A (en) Manufacture of inorganic building material
JPS58140367A (en) Manufacture of refractory construction material
JPH0862387A (en) Manufacture of fire resisting x-ray shielding plate without asbestos
IE57230B1 (en) Process for the manufacture of shaped products
JPH0215501B2 (en)
JPS63117943A (en) Hydraulic hardened matter
JPH03177349A (en) Preparation of inorganic molded product
GB2045306A (en) Boards and Sheets
JPS6451359A (en) Production of molded gypsum board
JPH0524104B2 (en)
JPH02175205A (en) Adding method of pulp fiber for fiber reinforcing

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130430

Year of fee payment: 14

FPAY Annual fee payment

Payment date: 20140509

Year of fee payment: 15

FPAY Annual fee payment

Payment date: 20150520

Year of fee payment: 16

FPAY Annual fee payment

Payment date: 20160421

Year of fee payment: 17

FPAY Annual fee payment

Payment date: 20170511

Year of fee payment: 18

EXPY Expiration of term