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Preparation method of a room temperature curing biomass pyrolysis oil-based structural adhesive

A biomass pyrolysis oil and structural adhesive technology, applied in the direction of in-line phenolic epoxy resin adhesive, can solve problems such as difficulty in adapting to the rapid development of wood structural materials, and achieve widening high-value utilization pathways , The effect of strong adhesive force and high strength

Active Publication Date: 2020-10-30
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, the adhesives for wood structures used in my country mainly rely on imports, and it is difficult to adapt to the rapid development of wood structure materials in my country.

Method used

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  • Preparation method of a room temperature curing biomass pyrolysis oil-based structural adhesive
  • Preparation method of a room temperature curing biomass pyrolysis oil-based structural adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The normal temperature curing type biomass pyrolysis oil-based structural adhesive was prepared by the following process:

[0028] (1) Take 40 parts of cotton stalk pyrolysis oil and add it to a centrifuge container, then add 160 parts of water, perform ultrasonic treatment for 30 minutes, and then centrifuge in a centrifuge at 3000 rpm for 25 minutes;

[0029] (2) filter the pyrolysis oil oil-water mixture after centrifugation, the filtrate is the aqueous solution (yield is about 190 parts) of water-soluble components in the pyrolysis oil, and the remaining solid insolubles are pyrolysis lignin components (yield about 10 copies);

[0030] (3) Dissolving 10 parts of pyrolytic lignin components in 20 parts of anhydrous methanol to prepare 30 parts of pyrolytic lignin methanol solution;

[0031] (4) Add 95 parts of pyrolysis oil water-soluble component aqueous solution, 35 parts of resorcinol, 35 parts of phenol, 75 parts of 37% formaldehyde solution and 15 parts of pyro...

Embodiment 2

[0036] The normal temperature curing type biomass pyrolysis oil-based structural adhesive was prepared by the following process:

[0037] (1) Take 60 parts of poplar wood pyrolysis oil and add it to the centrifuge container, then add 160 parts of water, carry out ultrasonic treatment for 30 minutes, and then centrifuge in a centrifuge at 3000 rpm for 25 minutes;

[0038](2) Filtrate the pyrolysis oil oil-water mixture after centrifugation, the filtrate is the aqueous solution (productivity is about 200 parts) of water-soluble components in the pyrolysis oil, and the remaining solid insolubles are pyrolysis lignin components (productivity about 20 copies);

[0039] (3) 20 parts of pyrolytic lignin components are dissolved in 40 parts of anhydrous methanol to prepare 60 parts of pyrolytic lignin methanol solution;

[0040] (4) Add 100 parts of pyrolysis oil water-soluble component aqueous solution, 40 parts of resorcinol, 40 parts of phenol, 80 parts of 37% formaldehyde solutio...

Embodiment 3

[0045] The normal temperature curing type biomass pyrolysis oil-based structural adhesive was prepared by the following process:

[0046] (1) Get 40 parts of larch wood bark pyrolysis oil and add in the centrifuge container, then add 120 parts of water and carry out ultrasonic treatment for 30 minutes, then centrifuge in a centrifuge at 3000 rpm for 25 minutes;

[0047] (2) The pyrolysis oil oil-water mixture after centrifugation is filtered, and the filtrate is the aqueous solution (productivity is about 140 parts) of water-soluble components in pyrolysis oil, and the remaining solid insolubles are pyrolysis lignin components (productivity about 20 copies);

[0048] (3) 20 parts of pyrolytic lignin components are dissolved in 40 parts of anhydrous methanol to prepare 60 parts of pyrolytic lignin methanol solution;

[0049] (4) Add 70 parts of pyrolysis oil water-soluble component aqueous solution, 45 parts of resorcinol, 45 parts of phenol, 90 parts of 37% formaldehyde solut...

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Abstract

The invention utilizes green renewable and cheap biomass pyrolysis oil as a raw material, performs step-by-step synthesis reaction with resorcinol, phenol, formaldehyde, epichlorohydrin and the like to prepare a normal temperature curing biomass pyrolysis oil-based structure adhesives. The adhesive of the invention not only converts agricultural and forestry waste into high-value-added green chemical raw materials, but also broadens use ways of high-valued biomass pyrolysis oil; also provides a new green adhesive for a structural adhesive industry, combines the advantages of epoxy resin and phenolic resin, has good mechanical strength, heat resistance and certain flexibility, improves wettability of a traditional structural adhesive, and easily infiltrates the surface of woods, has high strength of adhesive materials and high wood breakage rates, can well adapt to and meet the comprehensive requirements of a wood structure and other adhesive systems to the adhesive, and has important practical application value.

Description

technical field [0001] The invention relates to a preparation method of a normal temperature curing biomass pyrolysis oil-based structural adhesive, which belongs to the field of biomass green building materials and adhesives. Background technique [0002] Wooden structure has a long history and is one of the earliest building structures adopted by human beings. It has the advantages of low comprehensive energy consumption, green and environmentally friendly materials, strong indoor environment affinity, good seismic performance, and short construction period. It has been loved and widely concerned by all walks of life. With the rapid development of the wood structure construction industry, the demand for adhesives for wood structure building materials continues to expand. Adhesive is an important chemical raw material in the wood processing industry, and has become one of the important symbols to measure the development level of the wood industry. In particular, structural...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/04C08G59/08C08G8/28C08G8/22C08G8/10
CPCC08G8/10C08G8/22C08G8/28C08G59/08C09J163/04
Inventor 任学勇刘姗贾贺然杨雪银任浩博曹文泽常建民杨科研
Owner BEIJING FORESTRY UNIVERSITY
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