Preparation method of pyrolysis oil resorcinol formaldehyde resin adhesive for wood structure building materials

A technology of oil resorcinol formaldehyde resin and adhesive, which is applied in the field of preparation of pyrolysis oil resorcinol formaldehyde resin adhesive for wood structure building materials. Expensive, expensive modified raw materials, etc., to achieve the effect of saving raw material costs, strong adhesive force, and high strength

Inactive Publication Date: 2019-03-26
BEIJING FORESTRY UNIVERSITY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high price of resorcinol raw materials and the fact that the main raw materials are derived from petrochemical resources, the use range and application fields of this adhesive are limited.
Researchers have tried to use phenol, rosin, cardanol, etc. to modify resorcinol formaldehyde resin, but because the modified raw materials are relatively expensive, resorcinol formaldehyde resin adhesives can reduce production costs, improve environmental performance and There is a lot of room for development in optimizing the production process
[0004] Biomass pyrolysis oil is a liquid product obtained by pyrolysis and liquefaction of agricultural and forestry wastes as raw materials. It is rich in phenols, aldehydes, ketones, acids, esters, and pyrolytic lignin. The raw materials come from a wide range of sources. , environmental protection and low production cost, have been successfully applied in phenolic resin (ZL200910088172.8), urea-formaldehyde resin (ZL201210135672.4) and starch adhesive (ZL201310065226.5). The application of adhesives for wood structure building materials has not been reported yet

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
  • Preparation method of pyrolysis oil resorcinol formaldehyde resin adhesive for wood structure building materials
  • Preparation method of pyrolysis oil resorcinol formaldehyde resin adhesive for wood structure building materials
  • Preparation method of pyrolysis oil resorcinol formaldehyde resin adhesive for wood structure building materials

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The preparation method of pyrolysis oil resorcinol formaldehyde resin adhesive for wooden structure building material that the present invention proposes comprises the following steps:

[0021] (1) Add 70-90 parts of water and 2-5 parts of sodium hydroxide to the reaction kettle, heat to 40-60 ° C, add 70-80 parts of resorcinol under stirring, completely dissolve and cool to room temperature 20-25 ℃;

[0022] (2) Add the first batch of 10-20 parts of formaldehyde solution to the reaction kettle of step (1), react for 5-15 minutes, then cool to 25-30°C, and keep for 10-15 minutes;

[0023] (3) Add 20-30 parts of biomass pyrolysis oil to 40-60 parts of anhydrous methanol to prepare a pyrolysis oil methanol solution. The volume ratio of pyrolysis oil to anhydrous methanol is 1:2. The prepared Pyrolysis oil methanol solution is fed twice;

[0024] (4) Add the prepared first batch of 30-45 parts of pyrolysis oil methanol solution and the second batch of 10-20 parts of form...

Embodiment 1

[0030] (1) Add 75 parts of water and 3.5 parts of sodium hydroxide to the reaction kettle, heat to 45°C, add 70 parts of resorcinol under stirring, and cool to room temperature 23°C after it is completely dissolved;

[0031] (2) Add the first batch of 10 parts of formaldehyde solution to the reaction kettle of step (1), react for 8 minutes, heat up due to exothermic reaction, then cool to 25°C, and keep it for 10 minutes;

[0032] (3) Add 20 parts of biomass pyrolysis oil to 40 parts of anhydrous methanol to prepare a methanol solution of pyrolysis oil. The volume ratio of pyrolysis oil to anhydrous methanol is 1:2, and the pyrolysis oil methanol solution Feed twice;

[0033] (4) Add the prepared first batch of 30 parts of pyrolysis oil methanol solution and the second batch of 10 parts of formaldehyde solution into the resorcinol reaction kettle, stir evenly and react for 10 minutes, and cool the temperature of the reactant to 25°C , keep for 10min;

[0034] (5) Add 30 part...

Embodiment 2

[0038] (1) Add 72 parts of water and 3 parts of sodium hydroxide to the reaction kettle, heat to 45°C, add 80 parts of resorcinol under stirring, and cool to room temperature 23°C after it is completely dissolved;

[0039] (2) Add the first batch of 15 parts of formaldehyde solution into the reaction kettle of step (1), react for 10 minutes, then cool to 25°C, and keep it for 10 minutes;

[0040] (3) Add 20 parts of biomass pyrolysis oil to 40 parts of anhydrous methanol to prepare a methanol solution of pyrolysis oil. The volume ratio of pyrolysis oil to anhydrous methanol is 1:2, and the pyrolysis oil methanol solution Feed twice;

[0041] (4) Add the prepared first batch of 30 parts of pyrolysis oil methanol solution and the second batch of 15 parts of formaldehyde solution into the reaction kettle of step (2), stir evenly, react for 6 minutes, and cool the temperature of the reactant to 25 ℃, keep for 10min;

[0042] (5) Add the second batch of 30 parts of pyrolysis oil ...

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
shear strengthaaaaaaaaaa
Login to view more

Abstract

The present invention relates to a preparing method of pyrolytic tar resorcinol formaldehyde resin tackifier for use in timberwork building materials, and is thus the timberwork building material and tackifier domain. Add water and sodium hydroxide into the reaction kettle, add the resorcinol while stirring and after it dissolves, add the first formaldehyde solution; add the biomass pyrolytic tar to absolute methanol to make pyrolytic tar - methanol solution; add first pyrolytic tar- methanol solution and the second methanol solution to the reaction kettle and stir it evenly till it fully reacts and then add the second pyrolytic tar - methanol solution and another 10-20 parts of methanol solution, stir it evenly and it warms up and reacts till the mixture reaches the required viscosity, thus the tackifier base is obtained; prior to the use, add paraformaldehyde and filler wood flour into the base to get the pyrolytic tar resorcinol formaldehyde resin tackifier for use in timberwork building materials. The tackifier prepared using this method uses renewable raw materials and it not only costs less but also has good invasion and strong adhesion to the wood.

Description

technical field [0001] The invention relates to a preparation method of a pyrolysis oil resorcinol formaldehyde resin adhesive for wood structure building materials, belonging to the field of wood structure building materials and adhesives. Background technique [0002] Wood has natural low-carbon and environmental protection characteristics. Compared with steel structures and brick-concrete structures, wood structures have a unique function of regulating temperature and humidity in the living environment, and are convenient for construction and have a short construction period. Therefore, they are widely used in residential buildings, schools, office buildings, gymnasiums, There are more and more applications in large public buildings such as exhibition halls, landscape tourism buildings and some industrial buildings. With the rapid development of wood structure construction and other industries, the demand for adhesives for wood structure building materials with high bondi...

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): C09J161/14C09J159/00C09J197/02C09J11/08C08G8/32C08G8/22
CPCC08G8/22C08G8/32C08L2205/03C09J11/08C09J161/14C08L59/00C08L97/02
Inventor 任学勇常建民任新
Owner BEIJING FORESTRY UNIVERSITY
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