Composite flame retardant for plywood and application of plywood

A composite flame retardant and composite flame retardant technology, which is applied in other plywood/plywood appliances, aldehyde/ketone condensation polymer adhesives, adhesives, etc., can solve the problem of poor loss resistance and aging resistance, and great influence on the mechanical properties of plywood , The flame retardant effect is not obvious, etc., to achieve the effect of low hygroscopicity, suppression of smoke and poisonous gas, and obvious charcoal formation

Inactive Publication Date: 2016-02-03
GUANGXI UNIV
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although flame retardants are widely used in plywood, the existing flame retardants still have the following problems: the flame retardant effect is not obvious, the cost is high, the loss resistance and aging resistance are poor, and the mechanical properties of plywood are greatly affected.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A composite flame retardant for plywood, comprising the following raw materials in parts by weight: 8 parts of ammonium phosphate, 3 parts of ammonium sulfate, 1.5 parts of sodium tetraborate, 0.4 parts of zinc borate, 0.1 part of ammonium heptamolybdate and 0.2 parts of dicyandiamide .

[0029] Preparation of composite flame retardant for plywood: Weigh each raw material according to the above ratio, crush it to 120 mesh with a pulverizer, then mix the components, and finally add water to prepare a flame retardant solution with a mass concentration of 15%.

[0030] The method for preparing flame-retardant plywood by using composite flame retardant comprises the following production steps:

[0031] (1) Select a veneer with few knots and few defects, clean the surface, dry the veneer to a moisture content of 8%, and then soak the veneer in a composite flame retardant solution with a mass concentration of 15% for 24 hours, and then Take it out to dry, and then dry it wit...

Embodiment 2

[0037]A composite flame retardant for plywood, comprising the following raw materials in parts by weight: 10 parts of ammonium phosphate, 3.75 parts of ammonium sulfate, 2 parts of sodium tetraborate, 0.375 parts of zinc borate, 0.25 parts of ammonium heptamolybdate and 0.25 parts of dicyandiamide .

[0038] Preparation of composite flame retardant for plywood: Weigh each raw material according to the above ratio, crush it to 120 mesh with a pulverizer, then mix the components, and finally add water to prepare a flame retardant solution with a mass concentration of 14%.

[0039] The method for preparing flame-retardant plywood using composite flame retardant comprises the following steps:

[0040] (1) Select a veneer with few knots and few defects, clean the surface, dry the veneer to a moisture content of 8%, and then soak the veneer in a composite flame retardant solution with a mass concentration of 14% for 24 hours, and then Take it out to dry, and then dry it with a roll...

Embodiment 3

[0046] A composite flame retardant for plywood, comprising the following raw materials in parts by weight: 12 parts of ammonium phosphate, 5 parts of ammonium sulfate, 2.5 parts of sodium tetraborate, 0.2 parts of zinc borate, 0.35 parts of ammonium heptamolybdate and 0.35 parts of dicyandiamide .

[0047] Preparation of composite flame retardant for plywood: Weigh each raw material according to the above ratio, crush it to 150 mesh with a pulverizer, then mix the components, and finally add water to prepare a flame retardant solution with a mass concentration of 12%.

[0048] The method for preparing flame-retardant plywood using composite flame retardant comprises the following steps:

[0049] (1) Select a veneer with few knots and few defects, clean the surface, dry the veneer to a moisture content of 10%, and then soak the veneer in a composite flame retardant solution with a mass concentration of 12% for 24 hours, then Take it out to dry, and then dry it with a rolling d...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a composite flame retardant for plywood and application of the plywood. The flame retardant comprises, by weight, 8-15 parts of ammonium phosphate, 3-5 parts of ammonium sulfate, 1.5-2.5 parts of sodium tetraborate, 0.2-0.6 part of zinc borate, 0.1-0.5 part of ammonium molybdate and 0.1-0.5 part of dicyandiamide. The composite flame retardant is prepared by compounding an inorganic boron-containing retardant and a nitrogen and phosphorous retardant; all the components are reasonable in ratio and have a synergistic effect; the oxidization numerical value of the produced retardant reaches more than 52% and meets the B-grade fire-retardant requirement of the national standard; a very good fire-retardant effect is achieved; and meanwhile production cost can be reduced. The stability of the retardant in the use process is good, and the influence on the mechanical performance of the plywood is small and is only about 5%. The fire-retardant plywood produced through the retardant can be widely applied to the fields of indoor decoration, fire-retardant furniture, building structures, wood fireproof doors, fire-retardant floors and the like and has good economic benefits and social benefits.

Description

technical field [0001] The invention relates to the technical field of wood processing, in particular to a composite flame retardant for plywood and its application. Background technique [0002] In recent years, due to the excessive use of wood by humans, the number of various precious and large-diameter woods has become less and less. Therefore, humans have realized the comprehensive utilization of wood in various ways. The birth of wood-based panels marks the beginning of the modern era of wood processing, which makes the process develop from simply changing the shape of wood to improving the properties of wood. People plant artificial forests and make various wood-based panels from the wood cut from the artificial forests, so as to meet people's needs for precious wood and large-diameter wood. Making wood into wood-based panels maintains the characteristics of lightness and good mechanical properties of logs, and at the same time has large format, good structure, and co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52B27D1/08B27D5/00C09J161/32
Inventor 刁海林李诗勇
Owner GUANGXI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap