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A preparation method of fluorosilicon polymer and its application to the sealing and protection of stone cultural relics

A fluorosilicon polymer, quality technology, applied in the direction of coating, can solve the problems of poor adhesion of organic fluoropolymers, poor low temperature resistance, high price, etc., and achieve excellent waterproof performance, good light transmission, and easy operation. Effect

Inactive Publication Date: 2016-01-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organic fluoropolymers have poor adhesion, poor air permeability, poor low temperature resistance, and are expensive

Method used

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  • A preparation method of fluorosilicon polymer and its application to the sealing and protection of stone cultural relics
  • A preparation method of fluorosilicon polymer and its application to the sealing and protection of stone cultural relics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 0.572g OP-10, 0.286g SDS and 25g deionized water into a 500mL four-neck flask equipped with a stirrer, reflux condenser, thermometer and feeding device, stir well until dissolved; add 10gMMA, 13.33gBA, 0.467gAA and 2.380 gDFMA, 40°C rapid stirring pre-emulsification for 1.5h; take another 500mL four-necked bottle equipped with a stirrer, reflux condenser, thermometer and feeding device, add 0.190g OP-10, 0.095g SDS and 11.633g deionized water, fully Stir until dissolved, add 2.380g modified tetraethyl orthosilicate (TEOS) sol, 40℃, 1.5h; then add 0.157g Na dissolved in 5g deionized water 2 HPO 4 Buffer and 0.057g initiator KPS solution dissolved in 5g deionized water, and shell monomer pre-emulsion mass Raise the temperature to 70°C; after the blue phase appears in the system, continue to raise the temperature to 80°C, and at the same time add the remaining pre-emulsion and 0.057g of the initiator KPS solution dissolved in 10g of deionized water dropwise, and contr...

Embodiment 2

[0035] In a 500mL four-neck flask equipped with a stirrer, reflux condenser, thermometer and feeding device, add 0.619g OP-10, 0.309g SDS and 30g deionized water, stir well until dissolved; add 10gMMA, 13.33gBA, 0.467gAA and 4.759g gDFMA, 45°C rapid stirring pre-emulsification for 1h; take another 500mL four-necked bottle equipped with a stirrer, reflux condenser, thermometer and feeding device, add 0.206g OP-10, 0.103g SDS and 12.183g deionized water, stir well To dissolve, add 2.380g modified tetraethyl orthosilicate (TEOS) sol, 45°C, 1h; then add 0.170g Na dissolved in 5g deionized water 2 HPO 4 Buffer and 0.062g initiator KPS solution dissolved in 5g deionized water, and shell monomer pre-emulsion mass Raise the temperature to 75°C; after the blue phase appears in the system, continue to heat up to 80°C, and simultaneously add the remaining pre-emulsion and 0.062g of the initiator KPS solution dissolved in 10g of deionized water dropwise, and control the dropping rate fo...

Embodiment 3

[0037] Add 0.666g OP-10, 0.333g SDS and 35g deionized water into a 500mL four-neck flask equipped with a stirrer, reflux condenser, thermometer and feeding device, stir well until dissolved; add 10gMMA, 13.33gBA, 0.467gAA and 7.139g gDFMA, 50°C rapid stirring pre-emulsification for 1h; take another 500mL four-necked bottle equipped with a stirrer, reflux condenser, thermometer and feeding device, add 0.222g OP-10, 0.111gSDS and 12.736g deionized water, stir well To dissolve, add 2.380g modified tetraethyl orthosilicate (TEOS) sol, 50℃, 1h; then add 0.183g Na dissolved in 5g deionized water 2 HPO4 buffer and 0.067g initiator KPS solution dissolved in 5g deionized water, and shell monomer pre-emulsion quality Raise the temperature to 80°C; after the blue phase appears in the system, keep the temperature at 80°C, and add the remaining pre-emulsion and 0.067g of the initiator KPS solution dissolved in 10g of deionized water dropwise at the same time, and control the dropping rate...

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Abstract

The invention belongs to the technical field of synthesis of a fluorine-silicon polymer. The invention relates to preparation of a fluorine-silicon polymer material, and particularly relates to a preparation method of the fluorine-silicon polymer and a seal guard thereof applied to stone historical relics. The preparation method of the fluorine-silicon polymer comprises the following steps: forming a composite emulsion with a shell-core structure through copolymerization reaction by taking a modified ethyl orthosilicate sol as a core monomer and methyl methacrylate, n-butyl acrylate, acrylic acid and a dodecafluoroheptyl methacrylate copolymer as shell monomers; and applying the composite emulsion to the seal guard of the stone historical relics, such as a petroglyph. The prepared seal guard has the advantages of good material stability, small surface tension, excellent waterproof property and water-resistant acid alkali-resistant property. According to the preparation method, the preparation process is simple, and the operation is easy and convenient; a used solvent is water without pollution, green and environment-friendly and has better compatibility with stone inscription; a protective coating film is ultrathin, has good light transmission, does not influence the original appearance of the inscription, follows the principle of restoring the old as the old on historical relics and can effectively resist the corrosion of acid rain.

Description

technical field [0001] The invention belongs to the technical field of fluorosilicon polymer synthesis, and relates to the preparation of fluorosilicon polymer materials, in particular to a preparation method of fluorosilicon polymer and its application to the sealing and protection of stone cultural relics. Background technique [0002] Stone cultural relics such as grotto statues, steles and stone inscriptions are the splendid civilization of the Chinese nation, and are priceless and non-renewable cultural heritage and tourism resources. Located in Zhenjiang City, Jiangsu Province, Jiaoshan Forest of Steles and Cliff Stone Inscriptions are one of the three major forests of steles in China, together with Xi’an Forest of Steles and Qufu Confucian Temple Forest of Steles. pride. The cliff stone carvings are gathered on the cliffs on the west side of Jiaoshan. With the passage of time, many stone carvings have been eroded by rain, snow, moisture and sunlight for a long time d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/12C08F220/14C08F220/18C08F220/06C08F220/22C08F2/26C08F2/30C08F2/38C08G77/16C08G77/38C09D151/08
Inventor 邱凤仙李鹏玲荣新山杨冬亚徐吉成
Owner JIANGSU UNIV
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