Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of eucalyptus bark powder modified phenolic resin wood adhesive

A technology of wood adhesives and eucalyptus bark powder, which is applied in the direction of adhesives, aldehyde/ketone condensation polymer adhesives, adhesive types, etc., and can solve the problems of unseen modified phenolic resin wood adhesives, etc.

Active Publication Date: 2022-04-12
GUANGXI UNIV
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, there is no report of using eucalyptus bark as a raw material to modify phenolic resin wood adhesives

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of eucalyptus bark powder modified phenolic resin wood adhesive
  • A kind of preparation method of eucalyptus bark powder modified phenolic resin wood adhesive
  • A kind of preparation method of eucalyptus bark powder modified phenolic resin wood adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of eucalyptus bark powder modified phenolic resin wood adhesive, comprising the following steps:

[0036] (1) Add 600kg phenol, 240kg eucalyptus bark powder and 1050kg first batch of formaldehyde into the ball mill tank, ball mill for 100min, then add 545kg water to obtain the mixed material;

[0037] (2) Transfer the mixed material to the reaction kettle, add 350kg of the first batch of alkali while stirring, heat to 93°C, and react for 45min;

[0038] (3) Add 310kg of the second batch of formaldehyde, stir evenly, then add 70kg of the second batch of alkali, react at 90°C for 55min, cool to 40°C, and discharge to obtain eucalyptus bark powder modified phenolic resin wood adhesive.

Embodiment 2

[0040] A preparation method of eucalyptus bark powder modified phenolic resin wood adhesive, comprising the following steps:

[0041] (1) 600kg of phenol, 280kg of eucalyptus bark powder and 1150kg of the first batch of formaldehyde were added to the ball mill tank, ball milled for 110min, and then 585kg of water was added to obtain the mixed material;

[0042] (2) Transfer the mixed material to the reaction kettle, add 380kg of the first batch of alkali while stirring, heat to 94°C, and react for 42min;

[0043] (3) Add 330kg of the second batch of formaldehyde, stir evenly, then add 75kg of the second batch of alkali, react at 91°C for 53min, cool to 40°C, and discharge to obtain eucalyptus bark powder modified phenolic resin wood adhesive.

Embodiment 3

[0045] A preparation method of eucalyptus bark powder modified phenolic resin wood adhesive, comprising the following steps:

[0046] (1) 600kg phenol, 200kg eucalyptus bark powder and 950kg first batch of formaldehyde were added to the ball mill tank, ball milled for 90min, then 500kg water was added to obtain the mixed material;

[0047] (2) Transfer the mixed material to the reaction kettle, add 330kg of the first batch of alkali while stirring, heat to 92°C, and react for 47min;

[0048] (3) Add 290kg of the second batch of formaldehyde, stir evenly, then add 65kg of the second batch of alkali, react at 89°C for 57min, cool down to 40°C, and discharge to obtain eucalyptus bark powder modified phenolic resin wood adhesive.

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

PropertyMeasurementUnit
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of eucalyptus bark powder modified phenolic resin wood adhesive. Using phenol, eucalyptus bark powder, formaldehyde, alkali and water as raw materials, the formaldehyde is added in two batches, and the alkali is added in two batches. The phenol, eucalyptus bark powder and the first batch of formaldehyde are ball-milled, and then the remaining raw materials are added in sequence to make phenol, eucalyptus bark powder and formaldehyde polycondensate into eucalyptus bark powder modified phenolic resin adhesive. The method of the present invention has simple preparation process and good stability, can reduce the cost of the adhesive, has short synthesis time, and has little loss to equipment, and the prepared eucalyptus bark powder modified phenolic resin wood adhesive has high initial bonding strength and good pre-pressing performance. It has high bonding strength and can be used as glue for plywood and board after modulation, which can reduce the amount of flour added.

Description

technical field [0001] The invention belongs to the technical field of wood processing and adhesives, in particular to a preparation method of eucalyptus bark powder modified phenolic resin wood adhesive. Background technique [0002] Eucalyptus has become one of the important plantation tree species in southern my country due to its fast growth and high economic value. It can be harvested in 3-5 years. The current planting area of ​​eucalyptus in my country is about 4.6 million ha 2 , 80% of which are distributed in Guangxi, Guangdong, Hainan, Fujian and other coastal provinces. At present, the planting area of ​​eucalyptus in Guangxi reaches 1.87 million ha 2 Above, timber removals amounted to 37.8 million m 3 , ranking first in the country, of which 27.05 million m of eucalyptus 3 , accounting for 70% of the total wood. Eucalyptus bark is the residue of eucalyptus processing, which accounts for about 10% of eucalyptus wood. In Guangxi alone, there are 2.7 million m3 o...

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 Patents(China)
IPC IPC(8): C09J161/14C08G8/28
CPCC09J161/14C08G8/28
Inventor 张一甫陈浩秦志永孙建平王志丽
Owner GUANGXI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com