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Formaldehyde absorbing type parquet plywood base material and preparation method thereof

A technology for solid wood composite flooring and plywood, applied in the fields of aldehyde/ketone condensation polymer adhesives, wood treatment, wood heat treatment, etc., can solve the problems of high cost of dispersion components, high preparation cost, and no value for popularization and application , to achieve significant formaldehyde effect and stable formaldehyde effect

Inactive Publication Date: 2019-03-26
NANJING FORESTRY UNIV +1
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Due to the high cost of its dispersion liquid components, and the complicated process and high preparation cost, it has no value of popularization and application

Method used

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  • Formaldehyde absorbing type parquet plywood base material and preparation method thereof
  • Formaldehyde absorbing type parquet plywood base material and preparation method thereof
  • Formaldehyde absorbing type parquet plywood base material and preparation method thereof

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Embodiment Construction

[0034] 1 Main research content

[0035] Research plan: choose poplar veneer as the test material, first conduct heat treatment with different processes, then heat-press the veneer after heat treatment into multi-layer plywood for floor substrates, test the adsorption effect of the substrate on formaldehyde, and evaluate Heat treatment process, and finally obtain the best veneer heat treatment process for adsorbing formaldehyde as the subsequent floor substrate heat treatment process.

[0036] When studying the chemisorption of floor substrates, firstly add different chemisorbents to the adhesive, such as amino chitosan, 2-imidazolidinone and the equal ratio mixture of the two. Modification is carried out to increase the adsorption performance of the glue to formaldehyde, and then a preliminary test is carried out. On the basis of determining the relationship between the amount of each chemical adsorbent and the adsorption effect, the ratio and formula of the chemical adsorbent a...

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Abstract

The invention provides a formaldehyde adsorbing type parquet plywood base material preparation method, according to the method, the production technology is simple, the cost of added materials is low,and a plywood base material prepared through the method can remove formaldehyde through the adsorbing function of the plywood base material, is high in removing efficiency, and can continuously and effectively remove the formaldehyde for a long time. According to the preparation method, wood veneer is processed for 30-90 min at the temperature of 160-200 DEG C and then subjected to glue smearing,blank assembling and prepressing, and a parquet plywood base material is produced through hot pressing forming; during glue smearing, glue smeared on the veneer is a modified urea-formaldehyde resinadhesive containing a chemical formaldehyde adsorbing material; and the modified urea-formaldehyde resin adhesive is prepared through the steps that urea-formaldehyde resin, flour and ammonium chloride are uniformly stirred according to the mass ratio of being 100:10:1, then, amino chitosan with the mass percent being 1.9-7.6% and imidazolidone, or a mixture of the amino chitosan with the mass percent being 1.9-7.6% and the imidazolidone with the ratio being 1:1 are added, and uniform stirring is conducted.

Description

technical field [0001] The invention relates to a preparation method of a solid wood composite floor base material, in particular to a solid wood composite floor plywood base material capable of absorbing formaldehyde and a preparation method thereof. Background technique [0002] Building materials, interior decoration materials, furniture, etc. are the main sources of indoor formaldehyde pollution. For example, urea-formaldehyde insulating foam used as a heat-insulating building material will release formaldehyde when it ages; artificial board materials used in decoration, furniture and certain types of floors, such as plywood, blockboard, fiberboard, particleboard, etc., are mostly bonded with urea-formaldehyde resin agent, urea-formaldehyde resin contains free formaldehyde. With the popularity of interior decoration and the increase of airtightness, indoor air pollution is becoming more and more serious. According to statistics, within 1-6 months after decoration, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/06B27D1/04B27K5/00B32B21/13B32B37/12C09J161/32C09J11/04C09J11/06C09J11/08
CPCB27D1/04B27D1/06B27K5/0085B32B21/13B32B37/12C08L2205/03C09J11/04C09J11/06C09J11/08C09J161/32C08L99/00C08L5/08C08K3/28C08K5/3445
Inventor 蔡家斌李新何海文彭珊珊李涛
Owner NANJING FORESTRY UNIV
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