Preparation method of polystyrene foam board

A technology of polystyrene foam and expandable polystyrene, which is applied in the field of polymer materials, can solve the problems of poor flame retardant effect, oxygen index not meeting the requirements, apparent density affecting product application, affecting strength and thermal conductivity, etc.

Active Publication Date: 2015-01-21
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems that the addition of too much flame retardant will affect the strength and thermal conductivity, the apparent density will affect the application of the product, and the flame retardant effect will be poor if the addition is too small, and the oxygen index will not meet the requirements. The present invention provides a Preparation method of polystyrene composite thermal insulation material with good flame retardancy and superior thermal insulation performance and low apparent density

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 2 parts of magnesium oxide, 10 parts of furan resin, 0.5 parts of phosphoric acid, 1.5 parts of p-toluenesulfonic acid, 0.1 part of castor oil polyoxyethylene ether surfactant, 10 parts of pre-cured expandable polystyrene particles, The concentration of ammonium dihydrogen phosphate is 10%, and it is produced according to the following steps:

[0022] (1) first magnesium oxide is joined in the furan resin, fully stirs;

[0023] (2) Put the expandable polystyrene particles into the ammonium dihydrogen phosphate solution, mix and fully stir and disperse for 20 minutes, and then dry the polystyrene particles with a blower;

[0024] (3) fully stir the mixture and polystyrene particles in (1);

[0025] (4) Sprinkle phosphoric acid and p-toluenesulfonic acid evenly after stirring evenly in 3 and stir quickly;

[0026] (5) Add steam into the molding machine to heat and form, the pressure of the steam is 0.01MPa, and the heating time of steam is 5s, and the polystyrene c...

Embodiment 2

[0028] Take 30 parts of magnesium oxide, 150 parts of urea-formaldehyde resin, 25 parts of phosphoric acid, 20 parts of sulfuric acid, 0.5 part of polysiloxane surfactant, 120 parts of pre-haired and cured expandable polystyrene particles, ammonium dihydrogen phosphate Concentration 10%, produce according to the following steps:

[0029] (1) Magnesium oxide is first added in the urine-formaldehyde resin, fully stirred evenly;

[0030] (2) Put the pre-haired and matured expandable polystyrene particles into the ammonium dihydrogen phosphate solution, mix and fully stir and disperse for 20 minutes, and then dry the polystyrene particles with a blower;

[0031] (3) fully stir the mixture and polystyrene particles in (1);

[0032] (4) After 3 is stirred evenly, sprinkle phosphoric acid and sulfuric acid evenly and stir quickly;

[0033] (5) Add steam into the molding machine to heat and form, the pressure of the steam is 0.12MPa, and the heating time of steam is 20s, and the pol...

Embodiment 3

[0035] Get 30 parts of graphite; 150 parts of phenolic resin; 25 parts of phosphoric acid; 20 parts of acetic acid; 0.5 part of polysiloxane surfactant; 120 parts of expandable polystyrene particles; Steps to produce:

[0036] (1) Add the graphite to the phenolic resin and stir well;

[0037] (2) Put the expandable polystyrene particles into the diammonium hydrogen phosphate solution, mix and fully stir and disperse for 20 minutes, and then dry the polystyrene particles with a blower;

[0038] (3) fully stir the mixture and polystyrene particles in (1);

[0039] (4) After 3 is stirred evenly, sprinkle phosphoric acid and acetic acid evenly and stir quickly;

[0040] (5) Add steam into the molding machine to heat and form, the pressure of the steam is 0.08MPa, and the heating time of steam is 20s, and the polystyrene composite insulation board is obtained.

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PUM

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Abstract

The invention provides a production method of a polystyrene foam board. The method comprises the following steps: (1) prefoaming and curing expandable polystyrene particles; (2) steeping cured polyphenyl particles in a flame-retardant water solution, and then fishing out and drying; (3) mixing connection resin with flame-retardant inorganic material powder, and fully stirring evenly; (4) mixing the obtained materials, fully stirring evenly, adding a curing agent, and quickly stirring evenly; and (5) transferring the materials to a molding machine, heating and molding by steam, wherein the steam pressure is 0.01-0.15MPa, the steam heating time is 5-20s, thus obtaining the polystyrene foam board. The polystyrene foam board produced by the method disclosed by the invention has relatively low fire retardant content and relatively high flame retardant property.

Description

technical field [0001] The invention relates to polymer materials, in particular to building energy-saving materials, and in particular to a preparation method of polystyrene foam boards. Background technique [0002] Polystyrene foam board - also known as foam board and EPS board, is a white object formed by heating and pre-expanding expandable polystyrene beads containing volatile liquid foaming agent in a mold. It has the advantages of low specific gravity, good water resistance, and excellent heat insulation and sound insulation performance. It is mainly used for building wall, roof insulation, composite board insulation, cold storage, air conditioning, vehicle, ship insulation, floor heating, decoration and engraving, etc. Very versatile. However, polystyrene foam is extremely flammable and produces a large amount of dense smoke, and it is easy to drip when burning, which accelerates the spread of fire and brings great hidden dangers to fire safety. Therefore, improvi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/236C08J9/224C08L25/06
Inventor 江成真沈剑左兴信
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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