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Fire-retardant medium density fiberboard and preparation method thereof

A technology of fiberboard and medium density, which is applied in the field of flame-retardant medium-density fiberboard and its preparation. It can solve the problems that fiberboard is easy to absorb moisture, and the flame-retardant performance and environmental protection performance need to be improved, so as to achieve excellent flame-retardant effect and good matching synergy , low cost effect

Active Publication Date: 2016-06-22
DEHUA TB NEW DECORATION MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN1872514 (2006-12-06) discloses a medium-density fiberboard made of royal bamboo grass, but the fiberboard is easy to absorb moisture, and its flame-retardant performance and environmental protection performance need to be improved

Method used

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  • Fire-retardant medium density fiberboard and preparation method thereof
  • Fire-retardant medium density fiberboard and preparation method thereof
  • Fire-retardant medium density fiberboard and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0062] Preparation method one of modified MUF adhesive:

[0063] A. 100 parts of formaldehyde aqueous solution, 0.1 part and 0.3 part of amino-terminated hyperbranched polymer PAMAM whose mass concentration is 36.5wt% are 100 parts by weight, and 0.3 part of amino-terminated hyperbranched polymer PAMAM is put into the reactor, and the stirring is started; The active substance is sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide or ammonia water;

[0064] B. Add 1 part of hexachlorocyclotriphosphazene, heat up to 50°C, and when the temperature rises to 75°C by itself, add 35 parts of melamine, continue to heat up to 90°C, and react to obtain a preliminary polycondensate;

[0065] C. Add 40 parts of melamine to the above-mentioned preliminary polycondensate, and add 0.6 part of p-toluenesulfonamide to obtain the second polycondensate;

[0066] D. Add 20 parts of urea when the temperature of the second polycondensation product is lowered to 70°C, continu...

Embodiment 1

[0078] 12 parts of the modified MUF adhesive prepared by the modified MUF adhesive preparation method 1, 0.12 parts of ammonium chloride, 1.2 parts of paraffin emulsion (concentration 40%), Mg / Al-LDHs prepared by the flame retardant formula 1 (0.01 part of silane coupling agent modified) 12 parts, sprayed evenly on the surface of poplar fiber with spray gun and sieve in turn, after spraying, the fiber was paved, pre-pressed (pre-pressed pressure 3MPa), hot-pressed ( The three-stage curve of hot pressing pressure is 4.0MPa, 2.5MPa, 1.0MPa respectively, the hot pressing time is 60s / mm, and the temperature is 180°C). After cooling, the flame-retardant medium density fiberboard can be obtained, and the measured oxygen index is 34.2%.

Embodiment 2

[0080] 14 parts of modified MUF adhesive prepared by preparation method 2 of modified MUF adhesive, 0.14 part of ammonium chloride, 1.2 parts of paraffin emulsion (concentration 40%), Mg / Al-LDHs15 prepared by flame retardant formula 2 parts (modified by 0.01 part of silane coupling agent) are evenly sprayed on the surface of poplar fiber with a spray gun and a sieve in sequence. Pressure three-stage curve, respectively 4.0MPa, 2.5MPa, 1.0MPa, hot pressing time 60s / mm, temperature 190 ℃), cooling to obtain a flame-retardant medium density fiberboard, the measured oxygen index is 34.8%.

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Abstract

The invention relates to medium density fiberboards, in particular to a fire-retardant medium density fiberboard and a preparation method thereof. The fire-retardant medium density fiberboard is prepared from, by mass, 100 parts of wood fibers, 8-15 parts of magnalium nanometer layered double hydroxide, 0.01-0.02 part of a coupling agent, 12-15 parts of a modified MUF adhesive and 1-2 parts of a waterproof agent. The preparation method comprises the steps that 1, the magnalium nanometer layered double hydroxide is firstly dried and finely ground to range from 20 micrometers to 50 micrometers, then the coupling agent with the mass percent concentration ranging from 20% to 30% is hydrolyzed for 25 min-35 min at room temperature and then added to a water solution with the temperature ranging from 80 DEG C to 90 DEG C of the finely-ground magnalium nanometer layered double hydroxide, and after reacting is carried out for 0.5 h-1.5 h, suction filtration, washing, drying and grinding are carried out; and 2, the modified MUF adhesive and modified Mg / Al-LDHs are added to the wood fibers, and the medium density fiberboard is obtained through pavement, pre-pressing forming, hot pressing and cooling. The provided medium density fiberboard is environment-friendly, non-toxic and free of obvious moisture absorption, and the oxygen index reaches up to 34%.

Description

technical field [0001] The invention relates to a medium-density fiberboard, in particular to a flame-retardant medium-density fiberboard and a preparation method thereof. Background technique [0002] The flammability of fiberboard will hinder the growing market demand, and the flame retardant treatment of MDF has become an increasingly urgent task. [0003] CN1872514 (2006-12-06) discloses a medium-density fiberboard of royal bamboo grass, but the fiberboard is easy to absorb moisture, and its flame-retardant performance and environmental protection performance need to be improved. Contents of the invention [0004] The first technical purpose of the present invention is to provide a flame-retardant medium density fiberboard with flame-retardant properties. [0005] The second technical purpose of the present invention is to provide a method for preparing a flame-retardant medium density fiberboard with flame-retardant properties [0006] The first technical purpose ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/00B27N3/04B27N3/12B27N1/02C08L97/02C08L61/32C08K13/06C08K9/06C08K3/16C08K3/22C08K3/26
CPCB27N1/0209B27N3/002B27N3/04B27N3/12C08L97/02C08L61/32C08K13/06C08K9/06C08K2003/166C08K2003/164C08K3/22C08K2003/262
Inventor 谢序勤叶交友刘元强沈金祥朱丹莎沈建萍杨楠盛时雄王平
Owner DEHUA TB NEW DECORATION MATERIAL CO LTD
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