TWI458693B - A method for producing a high strength porous substrate using liquid crystal glass powder - Google Patents

A method for producing a high strength porous substrate using liquid crystal glass powder Download PDF

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TWI458693B
TWI458693B TW100132110A TW100132110A TWI458693B TW I458693 B TWI458693 B TW I458693B TW 100132110 A TW100132110 A TW 100132110A TW 100132110 A TW100132110 A TW 100132110A TW I458693 B TWI458693 B TW I458693B
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liquid crystal
glass powder
producing
porous substrate
crystal glass
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TW201311603A (en
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Tien Yin Chan
Wen Ching Cheng
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Univ Far East
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利用含液晶玻璃粉末製作高強度多孔隙基材之方法 Method for producing high-strength porous substrate by using liquid crystal glass powder

本發明係有關於一種利用含液晶玻璃粉末製作高強度多孔隙基材之方法,特別是指將液晶玻璃粉末添入陶土中,並藉由燒結成型過程中,液晶氣化而在基材內形成孔隙之高強度多孔隙基材製造方法。 The invention relates to a method for preparing a high-strength porous substrate by using liquid crystal containing glass powder, in particular to adding liquid crystal glass powder into the clay, and forming a liquid crystal in the sintering process to form a liquid crystal in the substrate. High strength porous substrate manufacturing method for pores.

液晶顯示器目前廣為大眾使用,但隨著液晶顯示器逐漸普及,也面臨處理替舊換新而產生之廢棄液晶顯示器,而廢棄之液晶顯示器除了電子元件外,就屬液晶玻璃最難處理。 Liquid crystal displays are widely used by the public at present, but with the gradual popularization of liquid crystal displays, they also face the disposal of discarded liquid crystal displays, and the discarded liquid crystal displays are the most difficult to handle in addition to electronic components.

而中華民國發明專利公告第I226315號則提出一種「液晶顯示器面盤玻璃之回收方法」,該方法之步驟如下:(a)首先,將廢棄液晶顯示器上之面盤玻璃取下,並將其研磨成玻璃粉;(b)利用高溫把附著於玻璃粉上之液晶蒸發成蒸氣,並以熱風帶離蒸氣狀態之液晶,其中該熱風與玻璃粉的行徑路徑相反,再以更高之溫度燃燒蒸氣狀態之液晶成二氧化碳與水,進而使液晶與玻璃粉分離,以得到玻璃原料;(C)最後,將所得之玻璃原料予以聚集回收。 The Republic of China Invention Patent Publication No. I226315 proposes a "recovery method for a liquid crystal display panel glass". The steps of the method are as follows: (a) First, the face glass on the discarded liquid crystal display is removed and ground. (b) using high temperature to evaporate the liquid crystal adhered to the glass frit to vapor, and to remove the liquid crystal in a vapor state by hot air, wherein the hot air is opposite to the path of the glass frit, and then the vapor is burned at a higher temperature. The liquid crystal in the state is carbon dioxide and water, and the liquid crystal is separated from the glass frit to obtain a glass raw material; (C) Finally, the obtained glass raw material is collected and recovered.

但通常液晶玻璃上尚有許多製程附著物或其他添加物,例如氧化銦錫(ITO)等,所以利用此種方式無法取得純度高的玻璃粉末,後續使用受限,並且將玻璃粉末後續處理還需要花費許多處 理製造成本。 However, there are usually many process attachments or other additives on the liquid crystal glass, such as indium tin oxide (ITO). Therefore, it is impossible to obtain a glass powder with high purity by this method, and the subsequent use is limited, and the glass powder is further processed. Need to spend a lot Manufacturing costs.

另外要說明的是,陶瓷多孔隙產品在市面上有許多不同種類,而本發明人曾提出利用添加廢棄液晶玻璃粉末至陶土中製作陶瓷產品可以具有節省陶土使用量,並且降低燒結溫度之功用,並且液晶玻璃燒結後留下孔隙,使陶瓷產品孔隙率增加,滲透度更好,因此給予回收廢棄液晶玻璃新的途徑。 In addition, it is to be noted that ceramic porous products have many different kinds of products on the market, and the inventors have proposed that the use of adding waste liquid crystal glass powder to ceramics for ceramic production can save the amount of clay used and reduce the sintering temperature. And the liquid crystal glass leaves pores after sintering, so that the porosity of the ceramic product is increased and the permeability is better, so a new way of recycling the waste liquid crystal glass is given.

為了將液晶玻璃應用在範圍更為廣泛之陶瓷多孔隙產品,本發明人在本發明中要提出的研究是,當加入不同份量、不同粉末平均粒徑之液晶玻璃粉末至陶土,對燒結後之多孔隙基材產生何種影響,並發現添加特定比例及特定的粉末平均粒徑之液晶玻璃粉末至陶土中,可以提昇燒結後之多孔隙基材的抗彎強度(BENDING STRENGTH),使多孔隙基材應用領域更為廣泛。 In order to apply liquid crystal glass to a wider range of ceramic porous products, the inventors of the present invention have proposed to study when adding liquid crystal glass powders of different amounts and different powder average particle sizes to clay, after sintering. What is the effect of the porous substrate, and it is found that the addition of a specific proportion and a specific average particle diameter of the liquid crystal glass powder to the clay can improve the bending strength of the porous substrate after sintering (BENDING STRENGTH), making the porous Substrate applications are more extensive.

爰此,本發明主要目的在於提供一種將液晶玻璃添加入陶土中,藉由液晶在燒結過程氣化,使燒結後之基材形成高強度之多孔隙結構,並藉此可作為回收廢棄液晶玻璃之處理方法,以及提供一種新穎製作多孔隙陶瓷基材之製造方法。 Accordingly, the main object of the present invention is to provide a liquid crystal glass added to a clay, which is vaporized in a sintering process to form a high-strength porous structure of the sintered substrate, thereby being used as a recycled waste liquid crystal glass. A method of treating the same, and providing a novel method of making a porous ceramic substrate.

基於上述目的,本發明人秉持不斷創新研發之精神,而開發出一種利用含液晶玻璃粉末製作高強度多孔隙基材之方法,步驟包括: A.將重量百分比為10%至50%之液晶玻璃磨成粉末後,添加至陶土中,成為一混合物;B.將該混合物預處理後,成型為一生胚,再將該生胚施以乾燥處理;C.將該乾燥後之生胚燒結成一基 材,該液晶玻璃內之液晶及液晶玻璃之低熔點成份並在燒結過程中揮發,而在該基材中形成複數孔隙。 Based on the above objects, the inventors have developed a method for producing a high-strength porous substrate using liquid crystal containing glass powder in accordance with the spirit of continuous innovation and research, and the steps include: A. After the liquid crystal glass of 10% to 50% by weight is ground into a powder, it is added to the clay to form a mixture; B. After pretreating the mixture, forming into a green embryo, and then drying the green embryo Processing; C. sintering the dried green embryo into a base The liquid crystal and the low melting point component of the liquid crystal glass in the liquid crystal glass are volatilized during sintering, and a plurality of pores are formed in the substrate.

進一步,在步驟A中,係將液晶玻璃磨成不同粒徑的粉末,並且將重量百分比為10%、20%、30%或40%,且平均粒徑為40微米、105微米、297微米或597微米之液晶玻璃粉末添入白陶土中。 Further, in the step A, the liquid crystal glass is ground into powders of different particle diameters, and the weight percentage is 10%, 20%, 30% or 40%, and the average particle diameter is 40 micrometers, 105 micrometers, 297 micrometers or 597 micron liquid crystal glass powder is added to the white clay.

進一步,步驟B之預處理包括攪拌及混鍊,該生胚成型方式則包括模壓、鑄漿或擠出之任一種。 Further, the pretreatment of step B includes stirring and mixing, and the green forming method includes any one of molding, casting or extrusion.

進一步,步驟C之燒結溫度在1000℃至1200℃之間,而燒結過程之持溫時間在10分鐘至120分鐘之間。 Further, the sintering temperature of the step C is between 1000 ° C and 1200 ° C, and the holding temperature of the sintering process is between 10 minutes and 120 minutes.

本發明主要功效在於: The main effects of the present invention are:

1.可回收再利用含液晶之玻璃,如液晶玻璃廢料或液晶螢幕等,可降低產品的原料成本。 1. Recyclable glass containing liquid crystal, such as liquid crystal glass scrap or LCD screen, can reduce the raw material cost of the product.

2.將液晶玻璃粉末加入於陶土中,液晶經高溫燒結會完全汽化分解,產生孔隙,對於廢棄液晶玻璃事業廢棄物的處理安全可靠,且無環保爭議。 2. The liquid crystal glass powder is added to the clay, and the liquid crystal is completely vaporized and decomposed by high-temperature sintering, and pores are generated. The disposal of the waste liquid crystal glass business waste is safe and reliable, and there is no environmental dispute.

3.在陶土中加入液晶玻璃不但可降低燒結溫度,獲得更佳強度,同時還可提升多孔隙結構體的透氣性與隔熱效果,經過適當的條件控制,藉由多孔隙的毛細吸附或滲透效應,很適合做為一種可調濕的綠色建材。 3. Adding liquid crystal glass to clay can not only reduce the sintering temperature, but also obtain better strength. At the same time, it can improve the gas permeability and heat insulation effect of the porous structure. After proper condition control, it can absorb or penetrate by capillary adsorption. The effect is very suitable as a kind of adjustable wet green building material.

第一圖係為本發明之流程圖。 The first figure is a flow chart of the present invention.

第二圖係為本發明燒結後之基材的電子顯微圖。 The second figure is an electron micrograph of the substrate after sintering of the present invention.

第三圖係為本發明製程中添加重量百分比為10%之液晶玻璃之燒結時間與基材強度之曲線圖。 The third graph is a graph showing the sintering time and substrate strength of a liquid crystal glass having a weight percentage of 10% added in the process of the present invention.

第四圖係為本發明製程中添加重量百分比為20%之液晶玻璃之燒結時間與基材強度之曲線圖。 The fourth graph is a graph showing the sintering time and substrate strength of a liquid crystal glass having a weight percentage of 20% added in the process of the present invention.

第五圖係為本發明製程中添加重量百分比為30%之液晶玻璃之燒結時間與基材強度之曲線圖。 The fifth figure is a graph showing the sintering time and substrate strength of a liquid crystal glass having a weight percentage of 30% added in the process of the present invention.

第六圖係為本發明製程中添加重量百分比為40%之液晶玻璃之燒結時間與基材強度之曲線圖。 The sixth figure is a graph showing the sintering time and substrate strength of a liquid crystal glass having a weight percentage of 40% added in the process of the present invention.

綜合上述技術特徵,本發明主要功效將可於下述實施例清楚呈現。 Combining the above technical features, the main effects of the present invention will be clearly shown in the following embodiments.

請參閱第一圖所示,係為一種利用含液晶玻璃粉末製作高強度多孔隙基材之方法,步驟包括: Please refer to the first figure, which is a method for fabricating a high-strength porous substrate using liquid crystal containing glass powder, and the steps include:

A.將重量百分比為10%至50%之液晶玻璃磨成不同粒徑的粉末後,添加至陶土中,成為一混合物,在本實施例係將重量百分比為10%、20%、30%及40%之液晶玻璃磨成平均粒徑為40微米、105微米、297微米及597微米之粉末並添入白陶土中,其中液晶玻璃之來源較佳為廢棄液晶顯示器,可降低產品的原料成本。 A. The liquid crystal glass having a weight percentage of 10% to 50% is ground into powders of different particle diameters, and then added to the clay to form a mixture. In the present embodiment, the weight percentage is 10%, 20%, 30% and 40% of the liquid crystal glass is ground into powders having an average particle diameter of 40 μm, 105 μm, 297 μm and 597 μm and added to the clay, wherein the source of the liquid crystal glass is preferably a waste liquid crystal display, which can reduce the raw material cost of the product.

B.將該混合物預處理後,成型為一生胚,再將該生胚施以陰乾或烘乾之乾燥處理,其中預處理包括攪拌及混鍊,該生胚成型方式則包括模壓、鑄漿或擠出之任一種,而攪拌及混鍊方式,以 及後續成型方式則如同一般陶瓷產品製程,故不贅述。 B. After the mixture is pretreated, it is formed into a single embryo, and the raw embryo is subjected to dry drying or drying, wherein the pretreatment includes stirring and mixing, and the green forming method includes molding, casting or Extrusion of any one, while stirring and mixing, to And the subsequent molding method is like the general ceramic product process, so it will not be described.

C.在燒結溫度為1000℃至1200℃之間,而燒結過程之持溫時間在10分鐘至120分鐘之內,將該乾燥後之生胚燒結成一基材,該液晶玻璃內之液晶及液晶玻璃之低熔點成份[如B2O3(氧化硼)等]並在燒結過程中揮發,而在該基材中形成複數孔隙,使該基材成為多孔隙結構,並且液晶經高溫燒結會完全汽化分解,對於廢棄液晶玻璃事業廢棄物的處理安全可靠,且無環保爭議。 C. The sintering temperature is between 1000 ° C and 1200 ° C, and the holding temperature of the sintering process is within 10 minutes to 120 minutes, and the dried green embryo is sintered into a substrate, the liquid crystal in the liquid crystal glass and The low melting point component of the liquid crystal glass [such as B2O3 (boron oxide), etc.] and volatilizes during the sintering process, and a plurality of pores are formed in the substrate to make the substrate into a porous structure, and the liquid crystal is completely vaporized and decomposed by high temperature sintering. The disposal of waste LCD glass business waste is safe and reliable, and there is no environmental dispute.

再請參閱第二圖所示,為燒結完成之基材的電子顯微圖,要進一步說明的是,液晶玻璃的熔點約在1000℃至1200℃之間,所以在燒結過程中,加入液晶玻璃可降低燒結溫度,且液晶玻璃會產生部分熔融的現象,熔融的液晶玻璃會幫助燒結進而提升強度,使燒結之基材成為一種高強度多孔隙結構體,且由於液晶玻璃尚未完全熔融,不會產生過度膨脹甚至將所需多孔隙結構填滿以至於影響其所需之功能性(透氣、透水、調濕),因此可將燒結後之基材做為過濾材、智慧型盆器或可調濕綠色建材之用途。 Referring to the second figure, the electron micrograph of the substrate after sintering is further explained, the melting point of the liquid crystal glass is between 1000 ° C and 1200 ° C, so the liquid crystal glass is added during the sintering process. The sintering temperature can be lowered, and the liquid crystal glass will partially melt. The molten liquid crystal glass will help the sintering to improve the strength, so that the sintered substrate becomes a high-strength porous structure, and since the liquid crystal glass is not completely melted, it will not Excessive expansion and even filling of the required porous structure to affect its required functionality (breathable, permeable, humidity-regulating), so the sintered substrate can be used as a filter material, a smart basin or adjustable The use of wet green building materials.

再請參閱第三圖至第六圖所示,為各種不同重量百分比之液晶玻璃,在不同平均粒徑狀況下,該胚體燒結為基材之燒結時間與基材強度之曲線圖,其中顯示:當添加重量百分比10%,且平均粒徑為40微米之液晶玻璃粉末至白陶土中,並在1200℃燒結,可得到最大強度的基材,且其強度值可達50MPa,大約比無添加液晶玻璃粉末之白陶土所燒結之基材(強度約21.5MPa)增加150%;當添加重量百分比30%,且平均粒徑為297微米或105微米之 液晶玻璃粉末至白陶土中,在燒結過後,基材還是能保有和無添加液晶玻璃粉末之白陶土所燒結之基材差不多的強度值;當添加重量百分比10%,且平均粒徑為40微米之液晶玻璃粉末至白陶土中,則可將燒結溫度降到1100℃依然可保有和無添加液晶玻璃粉末之白陶土所燒結之基材差不多的強度值。 Referring again to the third to sixth figures, for different weight percentages of liquid crystal glass, the sintering time of the body is the substrate and the strength of the substrate under different average particle diameter conditions, wherein When a liquid crystal glass powder having a weight percentage of 10% and an average particle diameter of 40 μm is added to the clay, and sintered at 1200 ° C, the substrate of the maximum strength can be obtained, and the strength value can reach 50 MPa, which is about no more than no addition. The base material (intensity of about 21.5 MPa) sintered by white clay of liquid crystal glass powder is increased by 150%; when 30% by weight is added, and the average particle diameter is 297 micrometers or 105 micrometers In the liquid crystal glass powder to the white clay, after the sintering, the substrate can still retain the strength value similar to that of the substrate sintered without the addition of the liquid crystal glass powder; when the weight percentage is 10%, and the average particle diameter is 40 μm In the liquid crystal glass powder to the white clay, the sintering temperature can be lowered to 1100 ° C, and the strength value similar to that of the substrate sintered without the addition of the liquid crystal glass powder can be maintained.

Claims (8)

一種利用含液晶玻璃粉末製作高強度多孔隙基材之方法,步驟包括:A.將重量百分比為10%至50%之液晶玻璃磨成不同粒徑的粉末,其中平均粒徑為40微米、105微米、297微米或597微米其中之一,之後添加至陶土中,成為一混合物;B.將該混合物預處理後,成型為一生胚,再將該生胚施以乾燥處理;C.將該乾燥後之生胚燒結成一基材,該液晶玻璃內之液晶及液晶玻璃之低熔點成份並在燒結過程中揮發,而在該基材中形成複數孔隙。 A method for producing a high-strength porous substrate by using a liquid crystal containing glass powder, the steps comprising: A. grinding a liquid crystal glass having a weight percentage of 10% to 50% into a powder of different particle diameters, wherein the average particle diameter is 40 μm, 105 One of micron, 297 micron or 597 micron, and then added to the clay to form a mixture; B. pre-treating the mixture to form a green embryo, and then applying the green embryo to a drying process; C. drying the mixture The subsequent green embryo is sintered into a substrate, and the low melting point components of the liquid crystal and the liquid crystal glass in the liquid crystal glass are volatilized during sintering, and a plurality of pores are formed in the substrate. 如申請專利範圍第1項所述之利用含液晶玻璃粉末製作高強度多孔隙基材之方法,在步驟A中,係將重量百分比為10%,且平均粒徑為40微米、105微米、297微米或597微米其中之一之液晶玻璃粉末添入白陶土中。 The method for producing a high-strength porous substrate using liquid crystal containing glass powder as described in claim 1, in the step A, the weight percentage is 10%, and the average particle diameter is 40 μm, 105 μm, 297 A liquid crystal glass powder of one of micrometers or 597 micrometers is added to the white clay. 如申請專利範圍第1項所述之利用含液晶玻璃粉末製作高強度多孔隙基材之方法,在步驟A中,係將重量百分比為20%,且平均粒徑為40微米、105微米、297微米或597微米其中之一之液晶玻璃粉末添入白陶土中。 The method for producing a high-strength porous substrate by using liquid crystal containing glass powder as described in claim 1, in the step A, the weight percentage is 20%, and the average particle diameter is 40 μm, 105 μm, 297 A liquid crystal glass powder of one of micrometers or 597 micrometers is added to the white clay. 如申請專利範圍第1項所述之利用含液晶玻璃粉末製作高強度多孔隙基材之方法,在步驟A中,係將重量百分比為30%,且平均粒徑為40微米、105微米、297微米或597微米其中之一之液晶玻 璃粉末添入白陶土中。 The method for producing a high-strength porous substrate using liquid crystal containing glass powder as described in claim 1, in the step A, the weight percentage is 30%, and the average particle diameter is 40 μm, 105 μm, 297 Liquid crystal glass of one of micron or 597 micron The glass powder is added to the white clay. 如申請專利範圍第1項所述之利用含液晶玻璃粉末製作高強度多孔隙基材之方法,在步驟A中,係將重量百分比為40%,且平均粒徑為40微米、105微米、297微米或597微米其中之一之液晶玻璃粉末添入白陶土中。 The method for producing a high-strength porous substrate using liquid crystal containing glass powder as described in claim 1, in the step A, the weight percentage is 40%, and the average particle diameter is 40 μm, 105 μm, 297 A liquid crystal glass powder of one of micrometers or 597 micrometers is added to the white clay. 如申請專利範圍第1項所述之利用含液晶玻璃粉末製作高強度多孔隙基材之方法,其中步驟B之預處理包括攪拌及混鍊。 A method for producing a high-strength porous substrate using liquid crystal-containing glass powder as described in claim 1, wherein the pretreatment of step B comprises stirring and mixing. 如申請專利範圍第6項所述之利用含液晶玻璃粉末製作高強度多孔隙基材之方法,其中步驟B之生胚成型方式包括模壓、鑄漿或擠出之任一種。 A method for producing a high-strength porous substrate by using a liquid crystal containing glass powder according to the sixth aspect of the invention, wherein the raw preform forming method of the step B comprises any one of molding, casting or extrusion. 如申請專利範圍第1項所述之利用含液晶玻璃粉末製作高強度多孔隙基材之方法,其中步驟C之燒結溫度在1000℃至1200℃之間,而燒結過程之持溫時間在10分鐘至120分鐘之間。 The method for producing a high-strength porous substrate by using liquid crystal containing glass powder according to claim 1, wherein the sintering temperature of the step C is between 1000 ° C and 1200 ° C, and the holding temperature of the sintering process is 10 minutes. Between 120 minutes.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW546274B (en) * 2000-08-02 2003-08-11 Inax Corp Porous sintered body
CN1558879A (en) * 2001-11-08 2004-12-29 迈克尔・J・豪恩 Method for making product from waste glass
TW200927701A (en) * 2007-12-11 2009-07-01 Murata Manufacturing Co Process for producing ceramic molded product
CN101538114A (en) * 2001-08-02 2009-09-23 3M创新有限公司 Article comprising metal oxide glasses and method of making same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW546274B (en) * 2000-08-02 2003-08-11 Inax Corp Porous sintered body
CN101538114A (en) * 2001-08-02 2009-09-23 3M创新有限公司 Article comprising metal oxide glasses and method of making same
CN1558879A (en) * 2001-11-08 2004-12-29 迈克尔・J・豪恩 Method for making product from waste glass
TW200927701A (en) * 2007-12-11 2009-07-01 Murata Manufacturing Co Process for producing ceramic molded product

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