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Preparation method of bamboo wood phenolic alcohol liquefaction product formaldehyde resin for foaming

A liquefied product, bamboo phenolic alcohol technology, applied in the field of preparation of formaldehyde resin, a bamboo phenolic alcohol liquefied product for foaming, can solve the problem of low ratio and achieve resource saving, safe working environment and mild reaction conditions

Inactive Publication Date: 2012-07-04
ZHEJIANG FORESTRY ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can save some resources, biomass materials are only used as fillers, and the ratio of replacing petrochemical materials is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 100 parts by mass of bamboo phenolic alcohol liquefaction product and 24 parts by mass of sodium hydroxide solution into a reaction kettle with a mechanical stirring device, a temperature control device and condensation reflux, stir evenly at 40°C, add 32 parts by mass of formaldehyde solution, and heat up to 85°C, react for 90 minutes, cool to room temperature and serve; product viscosity 3500mpa.s.

Embodiment 2

[0027] Add 100 parts by mass of bamboo phenolic alcohol liquefaction product and 20 parts by mass of sodium hydroxide solution into a reaction kettle with a mechanical stirring device, stir evenly at 38°C, add 36 parts by mass of formaldehyde solution, heat up to 90°C, react for 60 minutes, and cool Serve at room temperature; product viscosity 5000mpa.s.

Embodiment 3

[0029] Add 100 parts by mass of bamboo phenol alcohol liquefaction product and 24 parts by mass of sodium hydroxide solution into a reaction kettle with a mechanical stirring device and a condensation reflux device, stir evenly at 42°C, add 40 parts by mass of formaldehyde solution, and heat up to 95°C. React for 90 minutes, cool to room temperature and serve; product viscosity 7000mpa.s.

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PUM

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Abstract

The invention relates to a preparation method of a bamboo wood phenolic alcohol liquefaction product formaldehyde resin for foaming. The technical problem to be solved is that the provided preparation method can prepare a bamboo wood phenolic alcohol liquefaction product formaldehyde resin which not only has the properties of phenolic resins, but also has the characteristics of substituting polyether polyol to react with isocyanate so as to prepare polyurethane foam materials. The technical scheme is that: the preparation method of the bamboo wood phenolic alcohol liquefaction product formaldehyde resin for foaming comprises the following steps: adding a bamboo wood phenolic alcohol liquefaction product and a sodium hydroxide solution in a reaction vessel, heating to 35-45 DEG C, stirring uniformly, adding a formaldehyde solution, continuing heating to 85-95 DEG C, reacting for 30-90 min, cooling to room temperature. The using amounts of the formaldehyde and sodium hydroxide are that 24-67 parts by mass of the formaldehyde solution with a concentration of 30%-50% and 12-40 parts by mass of the sodium hydroxide solution with a concentration of 30%-50% are added into 100 parts by mass of the bamboo wood phenolic alcohol liquefaction product. The reaction vessel is equipped with a mechanical stirring device, or / and a condensation reflux device.

Description

technical field [0001] The invention relates to a preparation method of formaldehyde resin, a liquefied product of bamboo wood phenolic alcohol for foaming. Background technique [0002] Foaming materials are widely used in people's production and life because of their excellent performance. At present, there are mainly polyurethane, polypropylene and phenolic resin foaming materials in the market, among which soft PUR foam and semi-rigid PUR foam are mainly used Furniture cushions and decoration materials, car cushions, building sound-absorbing materials, and instrument packaging materials; and rigid PUR foam plastics are mainly used in refrigerators, cold storage and other industries as heat insulation materials, accounting for the total consumption of rigid foam plastics 57.5%. Due to its low thermal conductivity and excellent flame resistance, phenolic foam is used in high-rise buildings, large cultural and sports entertainment venues, high-speed vehicles, etc. Polypro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/08C08G18/54
Inventor 刘乐群孙丰文刘杨王宇红
Owner ZHEJIANG FORESTRY ACAD