KR19990032923A - Manufacturing method of artificial marble molding - Google Patents
Manufacturing method of artificial marble molding Download PDFInfo
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- KR19990032923A KR19990032923A KR1019970054134A KR19970054134A KR19990032923A KR 19990032923 A KR19990032923 A KR 19990032923A KR 1019970054134 A KR1019970054134 A KR 1019970054134A KR 19970054134 A KR19970054134 A KR 19970054134A KR 19990032923 A KR19990032923 A KR 19990032923A
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- 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
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- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/06—Acrylates
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- 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
- C04B40/0263—Hardening promoted by a rise in temperature
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- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/54—Substitutes for natural stone, artistic materials or the like
- C04B2111/542—Artificial natural stone
- C04B2111/545—Artificial marble
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
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Abstract
본 발명은 건축 마감재로 사용되는 인조대리석의 성형 방법에 관한 것으로서, 무기 충전재 65∼80중량%, 바인더 수지인 액상의 아크릴수지 시럽 20∼35중량%로 구성된 통상의 인조대리석 제조용 슬러리 100중량부에 대하여 반응개시제로 t-부틸 퍼옥시 말레인산 0.1∼1.0중량부, 촉진제로 중아황산소다 0.1∼1.0중량부를 첨가하여 상온에서 반응을 진행시킨 다음 점도가 8,000∼12,000 cps 에 이를 때 열풍오븐 속에 넣어 가열 경화시는 것을 특징으로 하며, 본 발명에 따라 제조된 아크릴계 인조대리석은 성형시 발생하는 휨 문제를 해결할 수 있고, 공정시간을 줄일 수 있었으며, 값싼 성형틀을 이용하기 때문에 제조 비용이 적게드는 장점이 있다.The present invention relates to a molding method of artificial marble used as a building finishing material, to 100 parts by weight of a conventional artificial marble manufacturing slurry composed of 65 to 80% by weight of an inorganic filler and 20 to 35% by weight of a liquid acrylic resin syrup, which is a binder resin. 0.1 to 1.0 parts by weight of t-butyl peroxy maleic acid as a initiator and 0.1 to 1.0 parts by weight of sodium bisulfite as an accelerator were added to the reaction at room temperature, and then heated and cured in a hot air oven when the viscosity reached 8,000 to 12,000 cps. The acrylic artificial marble prepared according to the present invention can solve the warpage problem occurring during molding, can reduce the process time, and has the advantage of low manufacturing cost because it uses a cheap molding frame .
Description
본 발명은 건축 마감재로 사용되는 인조대리석의 성형 방법에 관한 것으로서, 더욱 상세하게는 아크릴계 인조대리석 수지 조성물로 ㄱ자형의 마루귓틀을 성형하는 방법에 관한 것이다.The present invention relates to a method of molding artificial marble used as a building finishing material, and more particularly, to a method of molding an L-shaped floor covering with an acrylic artificial marble resin composition.
종래의 아크릴계 인조대리석 성형법에 대한 특허를 살펴보면 다음과 같다. 미합중국 특허 제3,847,665호(1974)와 미합중국 특허 제4,188,315호(1980)와 미합중국 특허 제4,341,673호(1982)에서는 인조대리석의 수지조성물에 대한 방법이 기재되어 있고, 국제특허 제89/05310호에서는 아크릴계 인조대리석 수지 조성물로 밀폐된 성형틀(몰드)에 성형 원료를 가압 충진하고 가열 경화시키는 성형법으로 개수대(씽크볼) 제작하는 방법이 개시되어 있다. 유럽특허 제66951 A1호에서는 성형틀에 주형 압력을 대기압보다 높이고, 상하부 성형틀 온도차를 10℃이상 유지하는 성형법이 개시되어 있으며, 유럽 특허 제516299 A1호에서는 무기충전제의 입자크기, 비표면적 등을 적절히 조합하여 슬러리 점도를 조절한 가압 주형 성형법이 개시되어 있다. 세계 특허 제89/05310호에서는 사용 온도가 다른 2조의 가열 개시제를 사용하여 성형하는 방법이 개시되어 있다.Looking at the patent for a conventional acrylic artificial marble molding method is as follows. US Pat. No. 3,847,665 (1974), US Pat. No. 4,188,315 (1980), and US Pat. No. 4,341,673 (1982) describe a method for resin compositions of artificial marble, and International Patent No. 89/05310 describes acrylic synthetics. A method of producing a sink (sink ball) by a molding method in which a molding raw material is press-filled and heat-cured in a molding die (mould) sealed with a marble resin composition is disclosed. European Patent No. 66951 A1 discloses a molding method in which a mold pressure is higher than atmospheric pressure in a molding die and a temperature difference between upper and lower molding dies is maintained at 10 ° C. or higher. Disclosed is a press-molding method in which a slurry viscosity is adjusted by proper combination. World Patent No. 89/05310 discloses a molding process using two sets of heating initiators having different service temperatures.
아크릴계 인조대리석 수지조성물로 인조대리석 마루귓틀을 제조하는 방법에는 아크릴계 인조대리석 판재를 잘라, 접착제로 붙여 가공하는 방법이 있으나 가공비가 비싼 단점이 있다. 또한 불포화폴리에스테르 인조대리석 성형품을 만드는 상압 주형 성형법이 있다. 자세하게는 상하부로 나뉘어 조립된 성형틀 속에 슬러리를 붓고, 상온 경화시킨 후 빼내고 후경화 시키는 방법이다.The method of manufacturing an artificial marble flooring frame with an acrylic artificial marble resin composition includes a method of cutting an acrylic artificial marble plate and attaching it with an adhesive, but the processing cost is high. There is also an atmospheric pressure molding process for making unsaturated polyester artificial marble moldings. In detail, the slurry is poured into a mold formed by dividing the upper and lower parts, cured at room temperature, and then removed and post-cured.
상기 특허들에서 보는 바와 같은 씽크볼 성형 방법을 이용하기에는 마루귓틀의 단면이 작고 길이가 길어서 성형 몰드 제작 비용이 매우 비싸고, 몰드 비용에 비하여 성형시간이 1시간 이상 소요되는 아크릴계 수지 성형물의 제작 방법으로는 생산성이 매우 낮기 때문에 경제성이 적었다.To use the sink molding method as described in the above patents, the cross section of the floorboard is small and the length is very expensive to manufacture the molding mold, and the manufacturing method of the acrylic resin molding that takes more than one hour compared to the mold cost The productivity was very low, so the economy was low.
일반적으로 비용이 적게 드는 주형 방식의 성형틀로는 불포화 폴리에스테르계 인조대리석 성형품을 만드는 데 사용되는 수지계 혹은 알루미늄계 성형틀을 이용하여 상압에서 주형하여 50∼80℃에서 경화시키는 방법이 있으나, 아크릴계 인조대리석 마루귓틀은 성형품의 길이 방향에 대한 수축으로 인한 휨이 발생하였고, 또한 후경화로 인한 성형시간이 긴 것이 단점이었다. 마루귓틀은 통상 1,000mm∼1,800mm 의 길이로 성형하게 되는데, 길이가 길수록 성형수축율로 인한 휨 변형이 잘 나타났다.In general, the molding method of the low cost molding method is a method of molding at normal pressure using a resin-based or aluminum-based molding mold used to make unsaturated polyester-based artificial marble molded products, and curing at 50-80 ° C. The artificial marble flooring frame had a deflection caused by shrinkage in the longitudinal direction of the molded article, and also had a long molding time due to post curing. Marquettes are usually molded in lengths of 1,000 mm to 1,800 mm, and the longer the length, the better the warpage deformation due to molding shrinkage.
본 발명은 상압에서 주형하는 방법으로 단순한 구조의 값싼 성형틀로 짧은 시간동안 성형하더라도 휨 등의 변형이 생기지 않으며, 열풍 오븐 내에서 성형가능한 방법을 제공하는 것을 목적으로 한다.An object of the present invention is to provide a method that can be molded in a hot air oven without deformation such as warping, even if molded for a short time by a cheap molding mold of a simple structure by the molding at normal pressure.
도 1 은 인조대리석 마루귓틀의 사시도이고,1 is a perspective view of an artificial marble flooring frame,
도 2 는 성형품과 성형틀의 사시도이다.2 is a perspective view of a molded article and a molding die.
<도면의 주요부분에 대한 부호의 설명><Description of Symbols for Main Parts of Drawings>
1 : ㄱ자 형태의 인조대리석 성형품, 2 : 하부에서 지지하는 보강재1: Artificial marble molded product of `` A '' shape, 2: Reinforcement supported from the lower part
3 : 성형품, 4 : 하부 성형틀3: molded article, 4: lower mold
5 : 상부 성형틀5: upper forming mold
본 발명은 무기 충전재 65∼80중량%, 바인더 수지인 액상의 아크릴수지 시럽 20∼35중량%로 구성된 통상의 인조대리석 제조용 슬러리 100중량부에 대하여 반응개시제로 t-부틸 퍼옥시 말레인산 0.1∼1.0중량부, 촉진제로 중아황산소다 0.1∼1.0중량부를 첨가하여 상온에서 반응을 진행시킨 다음 점도가 8,000∼12,000 cps 에 이를 때 열풍오븐 속에 넣어 가열 경화시는 것을 특징으로 한다.The present invention is 0.1 to 1.0 weight of t-butyl peroxy maleic acid as a reaction initiator with respect to 100 parts by weight of a conventional slurry for preparing artificial marble composed of 65 to 80% by weight of an inorganic filler and 20 to 35% by weight of a liquid acrylic resin syrup, which is a binder resin. In addition, by adding 0.1 to 1.0 parts by weight of sodium bisulfite as an accelerator, the reaction proceeds at room temperature, and when the viscosity reaches 8,000 to 12,000 cps, it is characterized in that it is heated and cured in a hot air oven.
이하, 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
본 발명의 반응개시제와 촉진제를 함께 사용하게 되면 종래의 반응개시제인 벤조일퍼옥사이드, 라우릴퍼옥사이드, 아조비스이소부티로니트릴 등을 사용할 때 자주 발생하게 되는 휨으로 인한 변형이 방지된다. 또한 종래의 반응개시제를 사용할 경우 약 80℃정도에서 약 1시간∼1시간 30분동안 가열반응시키고, 경화가 된 후에 2차로 약 110℃∼120℃에서 약 30분 이상 후경화시켜야 하나, 본 발명의 반응개시제와 촉진제를 병용하게 되면 상온에서 반응이 완료된다.The use of the reaction initiator and the promoter of the present invention together prevents deformation due to warpage that often occurs when using conventional reaction initiators such as benzoyl peroxide, lauryl peroxide, azobisisobutyronitrile, and the like. In addition, when using a conventional reaction initiator about 1 hour to 1 hour 30 minutes by heating at about 80 ℃, after curing, after curing at about 110 ℃ to 120 ℃ at least about 30 minutes or more, the present invention When the reaction initiator and accelerator are used in combination, the reaction is completed at room temperature.
반응개시제와 촉진제를 슬러리에 투입하여 상온에서 반응을 진행시켜서 점도가 8,000∼12,000 cps 에 이를 때 열풍오븐 속에 넣어 가열 경화시키며, 열풍 오븐에 넣어 가열경화시키는 적절한 온도는 110∼130℃이며, 적절한 경화시간을 45분∼1시간 정도이다. 또한 후경화 공정을 따로 거치지 않고도 잔류모노머 함량을 전체 성형품 중량의 0.5wt%이하로 유지할 수 있다.The reaction initiator and accelerator were added to the slurry to proceed with the reaction at room temperature, and when the viscosity reaches 8,000 to 12,000 cps, the mixture is heated and cured in a hot air oven, and the appropriate temperature for curing in the hot air oven is 110 to 130 ° C. The time is about 45 minutes to 1 hour. In addition, the residual monomer content can be maintained at 0.5wt% or less of the total weight of the molded article without undergoing a post-curing process.
슬러리 조제시 초기 메틸메타아크릴 시럽 수지의 점도가 약 300cps 내외인데 메틸메타크릴레이트 모노머를 2∼10wt% 희석함으로써 150∼250 cps 에서 조절하여 고화시간 및 경화시간을 조절할 수도 있었다. 초기 슬러리 점도가 낮을수록 고화시간은 길어지기 때문에 총 성형 공정 시간이 길어지므로 최적의 슬러리 점도는 2,500∼4,000 cps 이다.When preparing the slurry, the viscosity of the initial methyl methacryl syrup resin was about 300 cps. By diluting the methyl methacrylate monomer 2-10 wt%, the solidification time and the curing time could be controlled. The lower the initial slurry viscosity, the longer the solidification time, so the total molding process time is longer, so the optimum slurry viscosity is 2,500-4,000 cps.
본 발명에서 사용하는 전용 성형틀은 도 1 에 도시된 ㄱ 자 형태의 인조대리석 마루귀틀을 성형하기 위한 도 2 에 도시된 바와 같이 하부성형틀(4)과 상부성형틀(5) 사이에 성형재료(3)를 주형하여 성형품을 얻을 수 있도록 구성되어 있다.Dedicated molding frame used in the present invention is a molding material between the lower mold 4 and the upper mold 5 as shown in Figure 2 for forming the artificial marble flooring mold of the L-shape shown in FIG. (3) is molded so that a molded article can be obtained.
성형틀의 재질은 알루미늄 합금 혹은 금속 파우터를 혼합한 수지계 몰드(아크릴수지 또는 에폭시수지 또는 불포화폴리에스테르 수지에 알루미늄 합금 가루를 혼합한 주형품 등)면 좋다. 가열 경화시키는 수지 조성물로 공정시간을 줄이기 위하여 알루미늄과 같이 열전도율이 좋은 재질이 바람직하다.The material of the mold may be a resin-type mold (such as an acrylic resin or an epoxy resin or a cast product in which an aluminum alloy powder is mixed with an unsaturated polyester resin) mixed with an aluminum alloy or a metal powder. In order to reduce the process time with the resin composition to heat curing, a material having good thermal conductivity, such as aluminum, is preferable.
한편 도 1 에 도시된 바와 같은 아크릴계 인조대리석 마루귓틀은 인조 대리석 판재를 이용하여 절단한 후 전용접착제로 접합하여 만들 수도 있겠지만 이와 같은 방법은 인조대리석 판재의 제조 과정과 판재를 다시 절단, 접착, 절삭하는 과정에서의 재료 손실과 작업비용이 많이 투입되기 때문에 한 번에 성형하는 것이 제조원가를 현저히 낮출 수 있다.Meanwhile, the acrylic artificial marble flooring frame as shown in FIG. 1 may be made by cutting with artificial marble plate and then bonded with a dedicated adhesive, but this method may be used to cut, glue, and cut the manufacturing process and plate of artificial marble plate again. Molding in one step can significantly lower manufacturing costs because of the high cost of materials and work involved in the process.
본 발명의 실시예는 다음과 같다.Embodiments of the present invention are as follows.
<실시예 1><Example 1>
수산화알루미늄(평균입경 10∼20㎛)) 75Kg 과 액상 메틸메타크릴 수지시럽(평균점도 200∼300 cps) 25Kg, 그리고 칼라점박이 입자 10Kg을 혼합하고, 첨가제로 트리메틸을 프로판 트리메타크릴레이트를 250gr, 스테아린산 50gr 그리고 커플링제를 혼합한 후 진공을 걸어 슬러리내에 기포를 제거하였다. 이 슬러리를 100중량부에 대하여 반응개시제로 t-부틸 퍼옥시말레인산을 0.20 중량부 투입하고 약 2분간 교반한 후에 촉진제로 중아황산소다 0.2 중량부를 투입하고 약 2 분간 교반하여 하부 주형틀에 슬러리를 부었다.75 kg of aluminum hydroxide (average particle size: 10-20 µm), 25 kg of liquid methyl methacryl resin syrup (average viscosity: 200-300 cps), and 10 kg of color spotted particles were mixed, trimethyl was added as propane trimethacrylate 250 gr, 50 gr of stearic acid and a coupling agent were mixed and vacuum was removed to remove bubbles in the slurry. The slurry was added 0.20 parts by weight of t-butyl peroxymaleic acid as a reaction initiator with respect to 100 parts by weight of the slurry, and stirred for about 2 minutes. Then, 0.2 parts by weight of sodium bisulfite was added as an accelerator and stirred for about 2 minutes. Poured.
준비된 주형틀은 폭 100mm, 높이 60mm, 길이 1,600 mm 알루미늄 10t로 조립된 성형틀로 도2에서 기재되어 있는 바와 같이 하부에 슬러리를 붓고 나서 상부 성형틀을 끼워 넣었다. 슬러리에 반응개시제를 투입한 시점부터 약 10분∼15분 후면 주형된 슬러리가 고화되는데, 이때 점도는 10,000 cps 정도가 되었다. 이후에 성형틀을 열풍오븐(120℃)에 넣고 45분간 경화를 시킨 후 상온에서 냉각시켜 성형품을 빼내었다. 이렇게 제작된 성형품에 대하여 휨이나 기포의 유무를 검사하였으며, 그 결과는 표 1과 같다.The prepared mold is a molding mold assembled with a width of 100 mm, a height of 60 mm, and a length of 1,600 mm aluminum 10 t, and then poured the slurry into the lower mold as described in FIG. About 10 to 15 minutes after the reaction initiator was added to the slurry, the molded slurry solidified, and the viscosity became about 10,000 cps. Thereafter, the mold was placed in a hot air oven (120 ° C.), cured for 45 minutes, and cooled at room temperature to remove the molded product. The molded article thus manufactured was examined for the presence of warpage or bubbles, and the results are shown in Table 1.
<비교예 1>Comparative Example 1
실시예 1 에서와 같이 수산화알루미늄(평균입경 10∼20㎛) 75Kg 과 액상 메틸메타클릴 수지시럽(평균점도 200∼300 cps) 25Kg, 그리고 칼라 점박이 입자 10Kg을 혼합하고, 첨가제로 트리메틸을 프로판 트리메타크릴레이트를 250gr, 스테아린산 50gr, 그리고 라우릴퍼옥사이드 0.35 phr 혼합한 후 진공을 걸어 슬러리내에 기포를 제거하였다. 이 슬러리를 계량하여 하부 성형틀에 붓고 상부 성형틀을 끼워 넣었다. 이후에 성형틀을 열풍오븐(80℃)에서 약 1 시간 30 분 동안 경화시킨 후 열풍오븐을 120℃로 올려 약 60 분간 후경화시킨 후 상온에서 냉각시키고 성형품을 빼내었다.As in Example 1, 75 Kg of aluminum hydroxide (average particle diameter: 10 to 20 µm), 25 kg of liquid methyl methacryl resin syrup (average viscosity of 200 to 300 cps), and 10 Kg of colored spotted particles were mixed, and trimethyl was propane trimeta as an additive. 250 g of methacrylate, 50 gr of stearic acid, and 0.35 phr of lauryl peroxide were mixed and then vacuumed to remove bubbles from the slurry. This slurry was weighed and poured into the lower mold and the upper mold was inserted. Thereafter, the mold was cured in a hot air oven (80 ° C.) for about 1 hour and 30 minutes, and the hot air oven was raised to 120 ° C. for about 60 minutes, followed by cooling at room temperature, and removing the molded product.
<비교예 2∼4><Comparative Examples 2-4>
비교예 1에서 반응개시제만 표 1과 같이 변경하였다.Only the reaction initiator in Comparative Example 1 was changed as shown in Table 1.
본 발명에 따라 제조된 아크릴계 인조대리석은 성형시 발생하는 휨 문제를 해결할 수 있고, 공정시간을 줄일 수 있었으며, 값싼 성형틀을 이용하기 때문에 제조 비용이 적게드는 장점이 있다.Acrylic artificial marble prepared according to the present invention can solve the warpage problem occurs during molding, it is possible to reduce the process time, there is an advantage that the manufacturing cost is reduced because it uses a cheap molding frame.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019970054134A KR100235415B1 (en) | 1997-10-22 | 1997-10-22 | Process for methacrylate polymer concrete mix |
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| KR1019970054134A KR100235415B1 (en) | 1997-10-22 | 1997-10-22 | Process for methacrylate polymer concrete mix |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990048077A (en) * | 1997-12-08 | 1999-07-05 | 전원중 | Manufacturing method of artificial marble molding |
| KR100491874B1 (en) * | 2002-07-08 | 2005-05-27 | 제일모직주식회사 | Artificial Marble Having Marble Chips Not Settled Down |
Families Citing this family (1)
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| KR101031637B1 (en) | 2010-06-15 | 2011-04-27 | 진기철 | Method for brick manufacturing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6191054A (en) * | 1984-10-09 | 1986-05-09 | フクビ化学工業株式会社 | Manufacture of artificial marble |
| JPH02160648A (en) * | 1988-12-15 | 1990-06-20 | Tsutsunaka Plast Ind Co Ltd | Composition for molding polymethacrylate-based artificial marble |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990048077A (en) * | 1997-12-08 | 1999-07-05 | 전원중 | Manufacturing method of artificial marble molding |
| KR100491874B1 (en) * | 2002-07-08 | 2005-05-27 | 제일모직주식회사 | Artificial Marble Having Marble Chips Not Settled Down |
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| KR100235415B1 (en) | 2000-01-15 |
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