Abstract: The characteristics of Taiwan, fluorine resin, the first time applied to extract six stone conservation, the trial and obtain a product, tested and implemented
Practice, better than the wax, silicone, resin curing agent stone
Key words: fluorine-containing monomer resin curing agent of stone artifacts
First, before blindly following construction materials to the stone artifacts from the Stone Age to the China Millennium Monument, from the pyramids to the Tiananmen Square ⋯ ", all reflect the importance of stone can be said that the stone is a witness to the development of marble civilization, it is not only a must essential for building and furnishing materials, more importantly, it embodies a culture. However, the stone is not as hard as people think, and durability, weathering and damage stone artifacts, decorative stone appearance of many diseases, caused permanent regret , all we are constantly hearing and seeing. In 2000 China became the world's superpower stone production, but behind the stone chemical processing technology, resulting in product quality, low added value, remains a constraint for the stone industry of the important bottleneck to grow stronger one. how the stone appears effective prevention of various diseases and treatment, especially in the maintenance of stone artifacts, is still a global issue, but also improve the quality and grade of stone basic requirements.
Stone weathering, the production is a complex disease process, not only with the stone material, porous structures (such as marble, formed by the corrosive carbonate) the more important with water, oil, industrial smoke, garbage, air , acid rain, biological or human extrinsic factors in the environment are closely related. If the deal made by the conservation of stone to prevent water, oil, dirt and other external factors, the erosion of its destruction, can greatly reduce or prevent the generation of weathered stone disease and extend the life of stone.
At present the protection of the stone there are two ways, one of the stone completely sealed to prevent water, oil, dirt road into the Limestone from the stone, this approach also prevents the stone itself as a "breathing" channel, the stone itself is not friendly, so stone curing agent is not the direction of development. Second. Penetrate the stone surface treatment to reduce the stone to prevent water, dirt in the stone surface wetting and to further prevent this? Deficit dye penetrate into the stone house, this approach to maintain the permeability of stone, is the development direction of stone conservation agent . Now the stone on the market is mainly curing agent silicone, wax or polymer resin, Table 1 compares the performance of several types of maintenance products. Jing only these types of water conservation (72raN/ml but not anti-oil (20 ~ 30mN / m), and weather resistance is clearly not a long one, such as these can not meet the heritage conservation practices, building facades, parking, hotel, kitchen Taiwan and some other high demand field of stone conservation requirements.
Low surface energy fluorine resin and superior weather resistance caused widespread concern in the world, is the materials sector is a major front and popular topics. Excellent properties of organic fluorine polymer is closely related to their structure: fluorine resin polymer chain contains a lot of c-F bond, the bond energy of 490kJ/tool, compared to c-H is 415kJ/mol, c-O as 360kJ / mol, c-c only 350kJ/mol, its bond energy is the largest and, therefore, has many other resin fluorine resin can be compared with the characteristics of element ① excellent weathering resistance; ② resistant to hydrolysis; ③ good chemical resistance; ④ good solvent resistance ; ⑤ heat resistance; ⑥ has a very low surface tension, both water resistant and oil resistant; ⑦ with dirt resistance; ⑧ good water vapor permeability. Therefore, fluorinated resin is particularly suitable for building stone conservation to provide long-term, theoretical analysis and practical experiments show that fluorine-containing curing agent can both water and oil, but also has a long durability, the general can guarantee 2O years. According to reports, has begun the development of foreign stone fluoride curing agent, and our research is still a blank.
At present, the domestic market is still occupied stone care industry in the United States, Germany, Japan, Italy and other countries, the production of stone conservation agent, make away from home each year tens of millions of dollars in foreign exchange, while the domestic production of stone conservation agent to middle and low-based , there is no market competitiveness, market share occupied by small. For international development trends and the current domestic market mainly relies on imports of high-grade curing agent situation, starting from the starting point and developed a fluorine-containing stone curing agent, for reducing the conservation of the stone with the international advanced level, improve the quality and significance of stone very important.
Second, multi-agent technology indicators stone conservation
At present, the curing agent is no stone national and industry standards, according to Chemical Building Materials Co., Ltd. Wenling Lippo corporate standards Q/WLHJ003 ~ 2001, multi-function stone curing agent should meet the technical requirements specified in Table 2:
Practice, better than the wax, silicone, resin curing agent stone
Key words: fluorine-containing monomer resin curing agent of stone artifacts
First, before blindly following construction materials to the stone artifacts from the Stone Age to the China Millennium Monument, from the pyramids to the Tiananmen Square ⋯ ", all reflect the importance of stone can be said that the stone is a witness to the development of marble civilization, it is not only a must essential for building and furnishing materials, more importantly, it embodies a culture. However, the stone is not as hard as people think, and durability, weathering and damage stone artifacts, decorative stone appearance of many diseases, caused permanent regret , all we are constantly hearing and seeing. In 2000 China became the world's superpower stone production, but behind the stone chemical processing technology, resulting in product quality, low added value, remains a constraint for the stone industry of the important bottleneck to grow stronger one. how the stone appears effective prevention of various diseases and treatment, especially in the maintenance of stone artifacts, is still a global issue, but also improve the quality and grade of stone basic requirements.
Stone weathering, the production is a complex disease process, not only with the stone material, porous structures (such as marble, formed by the corrosive carbonate) the more important with water, oil, industrial smoke, garbage, air , acid rain, biological or human extrinsic factors in the environment are closely related. If the deal made by the conservation of stone to prevent water, oil, dirt and other external factors, the erosion of its destruction, can greatly reduce or prevent the generation of weathered stone disease and extend the life of stone.
At present the protection of the stone there are two ways, one of the stone completely sealed to prevent water, oil, dirt road into the Limestone from the stone, this approach also prevents the stone itself as a "breathing" channel, the stone itself is not friendly, so stone curing agent is not the direction of development. Second. Penetrate the stone surface treatment to reduce the stone to prevent water, dirt in the stone surface wetting and to further prevent this? Deficit dye penetrate into the stone house, this approach to maintain the permeability of stone, is the development direction of stone conservation agent . Now the stone on the market is mainly curing agent silicone, wax or polymer resin, Table 1 compares the performance of several types of maintenance products. Jing only these types of water conservation (72raN/ml but not anti-oil (20 ~ 30mN / m), and weather resistance is clearly not a long one, such as these can not meet the heritage conservation practices, building facades, parking, hotel, kitchen Taiwan and some other high demand field of stone conservation requirements.
Low surface energy fluorine resin and superior weather resistance caused widespread concern in the world, is the materials sector is a major front and popular topics. Excellent properties of organic fluorine polymer is closely related to their structure: fluorine resin polymer chain contains a lot of c-F bond, the bond energy of 490kJ/tool, compared to c-H is 415kJ/mol, c-O as 360kJ / mol, c-c only 350kJ/mol, its bond energy is the largest and, therefore, has many other resin fluorine resin can be compared with the characteristics of element ① excellent weathering resistance; ② resistant to hydrolysis; ③ good chemical resistance; ④ good solvent resistance ; ⑤ heat resistance; ⑥ has a very low surface tension, both water resistant and oil resistant; ⑦ with dirt resistance; ⑧ good water vapor permeability. Therefore, fluorinated resin is particularly suitable for building stone conservation to provide long-term, theoretical analysis and practical experiments show that fluorine-containing curing agent can both water and oil, but also has a long durability, the general can guarantee 2O years. According to reports, has begun the development of foreign stone fluoride curing agent, and our research is still a blank.
At present, the domestic market is still occupied stone care industry in the United States, Germany, Japan, Italy and other countries, the production of stone conservation agent, make away from home each year tens of millions of dollars in foreign exchange, while the domestic production of stone conservation agent to middle and low-based , there is no market competitiveness, market share occupied by small. For international development trends and the current domestic market mainly relies on imports of high-grade curing agent situation, starting from the starting point and developed a fluorine-containing stone curing agent, for reducing the conservation of the stone with the international advanced level, improve the quality and significance of stone very important.
Second, multi-agent technology indicators stone conservation
At present, the curing agent is no stone national and industry standards, according to Chemical Building Materials Co., Ltd. Wenling Lippo corporate standards Q/WLHJ003 ~ 2001, multi-function stone curing agent should meet the technical requirements specified in Table 2:
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