Modification method for inorganic fibers

A technology of inorganic fiber modification, applied in the field of fiber modification, can solve the problem of difficult wrapping of film-forming substances, achieve the effect of improving softness and strength, and improving paper performance

Inactive Publication Date: 2013-07-24
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface of inorganic fibers does not contain groups that can interact with organic materials, and film-forming substances are not easy to wrap on the surface of inorganic fibers

Method used

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  • Modification method for inorganic fibers
  • Modification method for inorganic fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Mix polyvinyl alcohol and water according to the mass ratio of 1:9, and stir and heat to 85°C until the polyvinyl alcohol is completely dissolved to obtain a polyvinyl alcohol aqueous solution, and then add sodium hydroxide and mass concentration to the polyvinyl alcohol aqueous solution It is 30% hydrogen peroxide, reacted at 85°C for 4 hours to obtain treated polyvinyl alcohol; wherein, the mass ratio of hydrogen peroxide to polyvinyl alcohol aqueous solution was 1:150, and the mass of sodium hydroxide added was hydrogen peroxide 4% of mass;

[0019] 2) Mix the treated polyvinyl alcohol with γ-glycidyl etheroxypropyl trimethoxysilane at a mass ratio of 1:0.4, then react at 90°C for 30 minutes, and adjust the pH to 7 to obtain an inorganic fiber softening enhancer ;

[0020] 3) Add 2g of lime mud fiber to 100mL of water, stir to disperse the lime mud fiber, then add 5g of inorganic fiber softening and strengthening agent, stir well, and then add 5mL of cationic pol...

Embodiment 2

[0022] 1) Mix polyvinyl alcohol with water at a mass ratio of 1:8, stir and heat to 90°C until the polyvinyl alcohol is completely dissolved to obtain a polyvinyl alcohol aqueous solution, and then add sodium hydroxide and mass concentration to the polyvinyl alcohol aqueous solution It is 30% hydrogen peroxide, and reacted at 90°C for 4 hours to obtain treated polyvinyl alcohol; wherein, the mass ratio of hydrogen peroxide to polyvinyl alcohol aqueous solution is 1:100, and the mass of sodium hydroxide added is hydrogen peroxide 5% of the mass;

[0023] 2) Mix the treated polyvinyl alcohol with γ-glycidyl etheroxypropyl trimethoxysilane at a mass ratio of 1:0.7, then react at 110°C for 30 minutes, and adjust pH=8 to obtain an inorganic fiber softening enhancer ;

[0024] 3) Add 2g of lime mud fiber to 150mL of water, stir to disperse the lime mud fiber, then add 7g of inorganic fiber softening and strengthening agent, stir well, and then add 7mL of cationic polyacrylamide sol...

Embodiment 3

[0026] 1) Mix polyvinyl alcohol and water according to the mass ratio of 1:11, and stir and heat to 80°C until the polyvinyl alcohol is completely dissolved to obtain a polyvinyl alcohol aqueous solution, and then add sodium hydroxide and mass concentration to the polyvinyl alcohol aqueous solution It is 30% hydrogen peroxide, and reacted at 80°C for 4 hours to obtain treated polyvinyl alcohol; wherein, the mass ratio of hydrogen peroxide to polyvinyl alcohol aqueous solution is 1:200, and the mass of sodium hydroxide added is hydrogen peroxide 7% of mass;

[0027] 2) Mix the treated polyvinyl alcohol with γ-glycidyl etheroxypropyl trimethoxysilane at a mass ratio of 1:0.6, then react at 100°C for 30 minutes, and adjust the pH to 9 to obtain an inorganic fiber softening enhancer ;

[0028] 3) Add 2g of lime mud fiber to 200mL of water, stir to disperse the lime mud fiber, then add 10g of inorganic fiber softening and strengthening agent, stir well, and then add 3mL of cationi...

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Abstract

The invention provides a modification method for inorganic fibers. The method comprises the following steps of: stirring polyvinyl alcohol and water at 80 to 90 DEG C until the polyvinyl alcohol is completely dissolved, then adding sodium hydroxide and hydrogen peroxide, and performing reaction for 4 hours at 80 to 90 DEG C to obtain treated polyvinyl alcohol; mixing the treated polyvinyl alcohol with gamma-glycidoxypropyltrimethoxysilane, performing reaction at 90 to 110 DEG C under an alkaline condition to graft the gamma-glycidoxypropyltrimethoxysilane onto the treated polyvinyl alcohol, and adjusting a pH value to be 7 to 9 to obtain an inorganic fiber softening reinforcing agent; and adding the inorganic fibers into water for stirring and dispersion, then adding the inorganic fiber softening reinforcing agent for uniform stirring, and after the system is reacted, performing suction filtering to obtain modified inorganic fibers. According to the modification method, the flexibility and the strength of the inorganic fibers can be improved; and when the inorganic fibers treated by the method are used for papermaking, the performance of paper can be improved.

Description

technical field [0001] The invention relates to a method for modifying fibers, in particular to a method for modifying inorganic fibers. Background technique [0002] Inorganic fibers can not only replace expensive plant fibers for papermaking, save a lot of plant fibers, reduce the cost of papermaking, but also reduce the pollution caused by plant fiber pulping. Inorganic fibers that can be used in papermaking mainly include white clay fiber, glass fiber, asbestos fiber, carbon fiber, ceramic fiber and fly ash fiber. [0003] The cost of inorganic fiber raw materials is extremely low, it cannot be finely fibrillated, and its surface does not contain groups that can interact or interact with plant fibers. In addition, inorganic fibers are brittle, strong, and short. They are beaten and dispersed during the pulping process. , It is easy to break into small pieces of fibers during transportation, which will not only cause small pieces of fibers to interweave and block equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/38D21H17/36D21H21/14D21H17/11D21H17/55
Inventor 苏秀霞毛敏张海宁张丹王楠郭明媛董伟曹鹏妮张云周丽
Owner SHAANXI UNIV OF SCI & TECH
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