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A kind of preparation method of biomass foam sandwich composite partition wall material

A composite partition wall and biomass technology, which is applied in the field of preparation of biomass foam sandwich composite partition wall materials, can solve problems such as difficult to degrade, energy supply, environmental safety hazards, and flammable plastic foam, and achieve flexibility enhancement, Improve slag defects, improve the effect of hard and brittle

Inactive Publication Date: 2017-12-26
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Plastic foam materials have excellent properties such as light weight, heat insulation, sound absorption, and moisture resistance, so they are widely used as sandwich materials in the fields of light quick-installed walls, light packaging, and room decoration; but because the production of plastic foam not only consumes a lot of petrochemical resources, and plastic foam is flammable and difficult to degrade, which brings great harm to energy supply and environmental safety

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 250g of molten phenol, 150g of polyethylene glycol, 50g of ethylene carbonate, 4g of concentrated sulfuric acid and 3g of concentrated phosphoric acid into the reaction kettle in sequence, turn on the stirrer, stir evenly and heat up to 40°C, slowly add 375g of wood powder in batches, At the same time, slowly add 16g of concentrated sulfuric acid and 12g of concentrated phosphoric acid; stir and heat up to 135°C, react for 90 minutes, cool down to 80°C, add 140g of neutralized caustic soda solution (mass concentration 40%), and slowly drop the temperature below 60°C Add 240g of caustic soda solution (mass concentration 40%), stir for 20min, then drop the temperature to 45°C, add 82.5g of methyl glucoside and 375g of solid paraformaldehyde, slowly heat up to 85°C, react for 90min, cool down to 40°C, put Material spare.

[0016] The biomass liquefied foaming resin prepared under the above conditions is a tan viscous opaque liquid with a viscosity of 5240mPa.s, a solid...

Embodiment 2

[0021] Add 200g of molten phenol, 200g of polyethylene glycol, 50g of ethylene carbonate, 4g of concentrated sulfuric acid and 3g of concentrated phosphoric acid into the reaction kettle in sequence, turn on the agitator, stir evenly and heat up to 40°C, slowly add 375g of rice straw powder in batches, At the same time, slowly add 16g of concentrated sulfuric acid and 12g of concentrated phosphoric acid; stir and heat up to 135°C, react for 90 minutes, cool down to 80°C, add 140g of neutralized caustic soda solution (concentration 40%), drop the temperature below 60°C and slowly add Caustic soda solution (concentration: 40%) 240g, after stirring for 20min, the temperature dropped to 45°C, added 85g of methyl glucoside and 400g of solid paraformaldehyde, slowly raised the temperature to 85°C, reacted for 120min, cooled down to 40°C, and discharged for later use.

[0022] 100g of biomass liquefied foaming resin, 8g of compounded surfactant of Tween-80 and OP-10 (1:1), 9g of foami...

Embodiment 3

[0025] Add 300g of molten phenol, 100g of polyethylene glycol, 25g of ethylene carbonate, 4g of concentrated sulfuric acid and 3g of concentrated phosphoric acid into the reaction kettle in sequence, turn on the stirrer, stir evenly and raise the temperature to 40°C, slowly add 375g of bamboo powder in stages , and at the same time slowly add 16g of concentrated sulfuric acid and 12g of concentrated phosphoric acid; stir and heat up to 135°C, react for 90min, cool down to 80°C, add 140g of neutralized caustic soda solution (concentration 40%), drop the temperature below 60°C slowly Add 240g of caustic soda solution (concentration: 40%), stir for 20min, then lower the temperature to 45°C, add 75g of methyl glucoside and 345g of solid paraformaldehyde, slowly raise the temperature to 85°C, react for 120min, cool down to 40°C, discharge for later use .

[0026] 100g of biomass liquefied foaming resin, 8g of Tween-80 and OP-10 (1:1) compound surfactant, 12g of foaming agent mixed ...

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Abstract

The invention discloses a preparation method of a composite sandwiched biomass foam partition wall material. The method comprises the technological steps of preparing a sandwiched biomass foam material, and gluing the sandwiched biomass foam material and a panel. A multiphase composite liquefying agent containing phenol, polyethylene glycol and cyclic carbonates and a mixed catalyst containing concentrated sulfuric acid and phosphoric acid are adopted, so that not only is the liquefying conversion rate increased, but also flame-retardant phosphorus-containing groups are introduced; in the resinification process, solid paraformaldehyde is used for substituting a formaldehyde solution, and methyl glucoside is added to form a multi-phase tool system, so that the reaction activity is further improved, the release amount of formaldehyde is reduced, the flexibility of resin is further improved, the hard brittleness and scaling-off defects of the foam material are improved, and the solid content of the resin is also enabled to reach 75 percent or more suitable for foaming; and in the foaming process, methyl benzenesulfonic acid is selected to be compounded with N-hydroxymethyl acrylamide, so that not only can the curing efficiency be increased, but also the flame-retardant effect can be improved.

Description

technical field [0001] The invention belongs to the technical fields of wood science and technology and green energy-saving building materials. Specifically relates to a preparation method of a biomass foam sandwich composite partition wall material. It is prepared by using agricultural residues such as straw or wood and bamboo processing residues through liquefaction, resinization, foaming and compounding. Background technique [0002] Plastic foam materials have excellent properties such as light weight, heat insulation, sound absorption, and moisture resistance, so they are widely used as sandwich materials in the fields of light quick-installed walls, light packaging, and room decoration; but because the production of plastic foam not only consumes a lot of petrochemical resources, and plastic foam is flammable and difficult to degrade, which brings great harm to energy supply and environmental safety. Therefore, it is of great significance to use renewable natural bio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/14C08L97/02C08K5/42C08K5/20C08J9/14C08G8/28B32B37/10B32B37/12B32B37/15
CPCB32B37/10B32B37/1284B32B37/15B32B2307/102B32B2307/304B32B2307/3065B32B2307/54B32B2307/718B32B2307/7265B32B2309/12B32B2607/00C08G8/28C08J9/141C08J2203/14C08J2203/18C08J2361/14C08J2497/02C08L61/14C08L2201/02C08L2203/14C08L97/02C08K5/42C08K5/20
Inventor 孙丰文鹿甫坤储呈浩巫佳洁郑家妍
Owner NANJING FORESTRY UNIV
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