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A kind of manufacturing method of modified phenolic resin/polysilicate aluminum dihydrogen phosphate composite foamed external wall insulation material

The technology of aluminum dihydrogen phosphate and aluminum dihydrogen phosphate is applied in the field of building thermal insulation material production, and can solve the problems of high thermal conductivity, fire hazard, easy combustion and the like

Active Publication Date: 2020-06-12
上海太洋科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commonly used external wall insulation materials have some performance deficiencies and safety disadvantages, so it is imminent to develop new non-combustible insulation materials with good insulation performance and low cost
[0003] Inorganic thermal insulation materials have good fire performance, acid and alkali resistance, corrosion resistance and good stability, but their water absorption is poor and their thermal conductivity is high
Organic thermal insulation materials such as phenolic resin foam board have low density, light weight, good construction and thermal insulation performance, but are easy to burn and cannot meet the Class A non-combustible standard, and there are fire hazards during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mix 1 mol of sodium bisulfite and 18 mL of deionized water, raise the temperature to 50°C, add 1 mol of 37% formaldehyde aqueous solution, and keep the reaction for 4 hours to prepare a sulfomethylating agent solution.

[0020] Weigh 10.4g (0.26mol) of sodium hydroxide to prepare a 50% aqueous solution.

[0021] Add 94g (1mol) of phenol into the three-necked flask and heat until it melts. The temperature of the water bath is kept at 50°C. Add 2 / 3 of the sodium hydroxide solution prepared above and react for 30 minutes; then add 146g (1.8mol) of 37% formaldehyde solution , the temperature was raised to 60°C, and reacted for 50 minutes; then heated to 75°C, added 15 mL of sulfomethylating agent solution and the remaining 1 / 3 of sodium hydroxide solution, and reacted for 30 minutes; finally added 56.7 g (0.7 mol) of 37 % formaldehyde solution, react at a constant temperature of 90°C for 2 hours, add water to cool to obtain a sulfomethyl water-soluble phenolic resin. Then ...

Embodiment 2

[0025] The solute mass ratio of the water-soluble modified phenolic resin (I) is increased to 0.3, and the viscosity of the aluminum dihydrogen phosphate solution is 18mPa . s. Other operations are the same as in Example 1, the compressive strength of the obtained composite foam material is 221.5KPa, the thermal conductivity is 0.0271W / m K, and the apparent density is 0.463g / cm 3 , the water absorption rate is 8.1%, and the brittleness rate is 6.3%. The non-combustibility test results show that the temperature rise in the furnace is 33.6°C, the mass loss before and after combustion is 30.7%, and the flame duration is 0s, which meets the standard of Class A non-combustible materials.

Embodiment 3

[0027] The concentration with 1‰ phenol amount is 3.9x10 4 The concentration of mol / L copper(Ⅲ)potassium diperactate replacing 2‰phenol is 4.5x10 4 mol / L copper (III) potassium diperiodate, other operations are the same as in Example 1, the compressive strength of the prepared composite foam material is 227.3KPa, the thermal conductivity is 0.0257W / m K, and the apparent density 0.442g / cm 3 , the water absorption rate is 8.6%, and the brittleness rate is 7.1%. The non-combustibility test results show that the temperature rise in the furnace is 33.6°C, the mass loss before and after combustion is 30.8%, and the flame duration is 0s, which meets the standard of Class A non-combustible materials.

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Abstract

The invention discloses a manufacturing method of a modified phenolic resin / polysilicic acid aluminum dihydrogen phosphate composite foaming external wall thermal insulation material. The manufacturing method comprises the steps of preparation of water-soluble modified phenolic resin (I), preparation of an aluminum dihydrogen phosphate solution (II), mixing of (I), (II) and a nonahydrate sodium silicate solution, foaming and curing, and demoulding, wherein the water-soluble modified phenolic resin (I) is prepared by adopting the steps that water-soluble sulfonated-pheno-formoldehyde resin is prepared firstly, and then subjected to graft copolymerization with an allyl monomer under catalysis of Cu (III). The manufacturing method has the beneficial effects that a polysilicic acid aluminum dihydrogen phosphate system is used as an inorganic skeleton, modified phenolic resin is used as an enhanceosome, and a building external wall thermal insulation material meeting the national A level noninflammability standard is prepared through composite foaming.

Description

technical field [0001] The invention relates to the technical field of production of building thermal insulation materials, in particular to a method for manufacturing a modified phenolic resin / polysilicate aluminum dihydrogen phosphate composite foamed external wall thermal insulation material. Background technique [0002] At present, building energy consumption has become one of the three major energy consumption in my country. In order to alleviate the pressure of my country's energy shortage and ensure the sustainable development of society, building energy conservation is of great significance. The key point of building energy saving is building exterior wall insulation, and the use of exterior wall insulation materials with excellent performance is an effective way to reduce building energy consumption. However, the currently commonly used external wall insulation materials have some performance deficiencies and safety disadvantages, so it is imminent to develop new ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/14C08L83/00C08K3/32C08J9/08C08G8/30C08G8/28
CPCC08G8/28C08G8/30C08J9/08C08J2203/02C08J2361/14C08J2483/00C08K2003/327
Inventor 史兰香张冀男
Owner 上海太洋科技有限公司