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Method for preparing foam composites

A composite material and foam technology, which is applied in the field of preparing polystyrene-phenolic foam composite materials and precursor compositions, can solve problems such as loss of structural strength, high brittleness and poor fragility, and combustion, and achieve high fluidity, Effects that are easily transferred and processed

Active Publication Date: 2019-01-22
XFLAM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] A disadvantage of polystyrene foams is that they are extremely prone to burning and / or melting in a flame, resulting in a loss of structural strength
In contrast, as a class of materials, foams having a phenolic resin matrix (which are phenolic foams) are known for their excellent flame retardancy and thermal properties, however, their high brittleness and fragility typify Unfavorable structural properties hamper their commercial potential in multiple application areas

Method used

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  • Method for preparing foam composites
  • Method for preparing foam composites
  • Method for preparing foam composites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0189] The following examples used the components listed in Table 1. The weight of thermoplastic microspheres and carbon dispersions includes water present in the material.

[0190]

[0191] Preparation of Microsphere Composition

[0192] The particulate boric acid was treated with 3-chloropropyltrimethoxysilane and the mixture was then heated to 70°C for 30 minutes.

[0193] A microsphere composition comprising expandable thermoplastic microspheres, coated boric acid, carbon dispersion and catalyst was prepared by mixing the components in a plowshare mixer for 5 minutes. The resulting blend was then sieved through a vacuum-assisted Buchner funnel fitted with a 1 mm aperture square screen.

[0194] Preparation of Granular Compositions

[0195] Polystyrene expanded to 18kg / m 3 density and remain in the silo for 11 hours. Partially expanded polystyrene was fed into the mixhead at a rate of 68 liters / minute. The resole resin was pumped into the mix head at a rate of 0.68...

Embodiment 2

[0202] Preparation of Microsphere Composition

[0203] The particulate boric acid was treated with 3-chloropropyltrimethoxysilane and the mixture was then heated to 70°C for 30 minutes.

[0204] A microsphere composition comprising expandable thermoplastic microspheres, coated boric acid and carbon dispersion was prepared by mixing the components in a plowshare mixer for 5 minutes. The resulting blend was then sieved through a vacuum-assisted Buchner funnel fitted with a 1 mm aperture square screen.

[0205] Preparation of Granular Compositions

[0206] Polystyrene expanded to 18kg / m 3 density and remain in the silo for 11 hours. Partially expanded polystyrene was fed into the mixhead at a rate of 68 liters / minute. The resole resin was pumped into the mix head at a rate of 0.68 kg / min. The microsphere composition was pumped into the mix head at a rate of 0.167 kg / min.

[0207] A multi-stream nozzle delivered a curtain of phenolic resin and microsphere composition over th...

Embodiment 3

[0214] Preparation of Microsphere Composition

[0215] The particulate boric acid was treated with 3-chloropropyltrimethoxysilane and the mixture was then heated to 70°C for 30 minutes. The material was sieved and the portion retained on the BS #10 mesh screen was discarded.

[0216] A microsphere composition comprising expandable thermoplastic microspheres, carbon dispersion and catalyst was prepared by mixing the components in a plowshare mixer for 5 minutes.

[0217] Preparation of Granular Compositions

[0218] Polystyrene expanded to 18kg / m 3 density and remain in the silo for 11 hours. Partially expanded polystyrene was fed into the mixhead at a rate of 68 liters / minute. The resole resin was pumped into the mix head at a rate of 0.68 kg / min. The microsphere composition was pumped into the mix head at a rate of 0.105 kg / min. The treated boric acid was fed into the mix head at a rate of 0.102 kg / min.

[0219] A multi-stream nozzle delivered a curtain of phenolic res...

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Abstract

Methods for preparing polystyrene-phenolic foam composites and precursor compositions are described. The method produces composite materials with advantageous properties especially useful in thermal insulation and flame retardant applications.

Description

technical field [0001] The present invention relates to methods for preparing polystyrene-phenolic foam composites and precursor compositions. The method produces composite materials with advantageous properties particularly, but not exclusively, for use in thermal insulation and flame retardancy applications. Background technique [0002] Styrofoam panels or moldings are widely used for thermal and acoustic insulation in building construction. Traditional methods used to manufacture polystyrene foam panels or moldings are as follows: [0003] 1. Expandable polystyrene supplied by the manufacturer in the form of size-graded granules. This granular polystyrene has a certain proportion of blowing agent, such as pentane, dissolved therein. [0004] 2. Exposing the granules to heat, usually steam, in a fluidized bed. The particles soften as they travel from the bottom to the top of the fluidized bed, and when pentane is lost from the solid solution, the gas released causes t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/35C08J9/32B29C70/66
CPCC08J9/32B29C44/04B29C44/445C08J2203/22C08J2361/10C08J2461/10C08J9/0066C08J9/009C08J9/232C08J9/236C08J9/35C08J2425/06C08L61/06C08L25/06C08J9/0061C08J2325/06B29C44/3426B29C44/206B29K2025/06B29L2007/002
Inventor 夫伦·布雷斯格德尔迈克尔·蒙蒂戈登·史密斯斯蒂芬·克拉克斯蒂芬·麦克米伦朱利安·格林默里·奥尔皮
Owner XFLAM