Preparation method and application of water glass modified fiber

A technology of modified fiber and water glass, which is applied in the preparation of building board materials and the preparation of water glass modified fiber. It can solve the problems of low strength of finished products, poor heat preservation effect, and large investment in production equipment, so as to improve the quality of boards, The effect of reducing production cost and adjustable setting time

Inactive Publication Date: 2016-12-07
SHANDONG YUANGEN CHEM TECH RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the production of high-density boards requires complex high-temperature cooking and softening of wood chips, and then enters a heat mill to heat them into fibers, which requires high fiber quality, large investment in production equipment, complex processes, high energy consumption, low strength of finished products, and waste water. Waste residue treatment; the cement board is heavy and cannot be nailed, the insulation effect is poor, and the bending resistance of the thin board is poor
A large number of plant straws are burned or buried in rural areas, resulting in waste of resources

Method used

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  • Preparation method and application of water glass modified fiber
  • Preparation method and application of water glass modified fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, this embodiment provides a preparation method of water glass modified fiber and its specific application process. It specifically includes the following steps: coarsely grind dry plant stalks or wood chips with bark into coarse mixed fibers with a length less than 50mm and a diameter less than 2mm; The wood is directly coarsely ground into the fiber, and the stirring is continued for 15 minutes, and then the pressure is increased to 12MPa, and the stirring is continued for 30 minutes. Slowly release the pressure and then evacuate until the vacuum degree reaches below 0.09MPa. Mix 30% water glass by weight of fiber and 1.5% water glass curing agent by weight of water glass and spray it into the plant or wood fiber under vacuum stirring state, continue to stir for 20 minutes, then pressurize to 10MPa, and continue to stir for 30 minutes. After slowly releasing the pressure, the material is dried on a fluidized bed at a temperature of 130 degrees to obtain p...

Embodiment 2

[0023] Embodiment 2, this embodiment provides a preparation method of water glass modified fiber and its specific application process. It specifically includes the following steps: coarsely grind dry plant straw or bark wood chips into coarse mixed fibers with a length of less than 50mm and a diameter of less than 2mm; Plants or wood are directly coarsely ground into fibers, and continue to stir for 22 minutes, then pressurize to 25MPa, and continue to stir for 10 minutes. Slowly release the pressure and then evacuate until the vacuum degree reaches below 0.09MPa. Mix 35% water glass by weight of fiber and 1.5% water glass curing agent by weight of water glass and spray it into the plant or wood fiber under vacuum stirring state, continue to stir for 25 minutes, then pressurize to 15MPa, and continue to stir for 30 minutes. After slowly releasing the pressure, the material is dried on a fluidized bed at a temperature of 140 degrees to obtain a primary modified fiber. Spray 2...

Embodiment 3

[0026] Embodiment 3, this embodiment provides a preparation method of water glass modified fiber and its specific application process. It specifically includes the following steps: coarsely grind dry plant straw or wood chips with bark into coarse mixed fibers with a length of less than 50mm and a diameter of less than 2mm; The plant or wood is directly coarsely ground into the fiber, and the stirring is continued for 30 minutes, and then the pressure is increased to 20MPa, and the stirring is continued for 25 minutes. Slowly release the pressure and then evacuate until the vacuum degree reaches below 0.09MPa. Mix 40% water glass by weight of fiber and 1.5% water glass curing agent by weight of water glass and spray it into the plant or wood fiber under vacuum stirring state, continue to stir for 20 minutes, then pressurize to 10MPa, and continue to stir for 30 minutes. After slowly releasing the pressure, the material is dried on a fluidized bed at a temperature of 145 degre...

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Abstract

The invention relates to a chemical field, and relates to a preparation method and application of a water glass modified fiber. The preparation method comprises the following steps: grinding dry plant straw or wood slices with barks, spraying a coupling agent into a coarse blend fiber under a vacuum stirring condition, continuously stirring, pressurizing and stirring; then decompressing and vacuumizing, spraying a mixture after water glass is mixed with a water glass coagulating agent, and maintaining vacuum stirring; then pressurizing and stirring; slowly decompressing, then putting in a fluidized bed for drying, obtaining a primary modified fiber after drying, spraying the coupling agent into the primary modified fiber, and uniformly mixing to obtain a secondary modified fiber. A high density board produced by using the modified fiber has the advantages of high density, high strength, small using amount of adhesive and fiber saving, a great number of plant straw smashed fibers can be used, the production cost is greatly reduced, meanwhile the board quality is improved, no waste water or waste residue is discharged in the production process, and the environment is protected; therefore, the water glass modified fiber has great popularization values.

Description

technical field [0001] The invention relates to the field of chemical industry, and relates to a preparation method of a building board material, in particular to a preparation method and application of a water glass modified fiber. Background technique [0002] At present, the production of high-density boards requires complex high-temperature cooking and softening of wood chips, and then enters a heat mill to heat them into fibers, which requires high fiber quality, large investment in production equipment, complex processes, high energy consumption, low strength of finished products, and waste water. Waste residue treatment; the cement board is heavy and cannot be nailed, the insulation effect is poor, and the bending resistance of the thin board is poor. A large number of plant straws in rural areas are burned or buried, resulting in waste of resources. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention provides a preparation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00C04B18/24C04B18/26B27N3/04
CPCB27N3/04C04B18/24C04B18/26D21C5/00Y02W30/91
Inventor 王士平荆蒙蒙仲亚杰张聪孙雨思许玮宋延涛宋丽丽陈永梅张丰庆
Owner SHANDONG YUANGEN CHEM TECH RES & DEV CO LTD
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