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Preparation method of A-grade modified polystyrene board

A polystyrene board, modified technology, applied in the field of construction, can solve the problems of high thermal conductivity, high apparent density, poor thermal insulation effect, etc., to achieve the effect of reducing thermal conductivity, reducing apparent density, and reducing cement consumption

Pending Publication Date: 2022-06-03
ANHUI SKSHU PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The Chinese patent document with the patent number CN 104773992 A discloses a polyphenylene grade A fire-proof insulation board and its preparation method, mainly by configuring cement-based slurry to wrap polystyrene particles, and coating the polyphenylene by surface coating. The ethylene particles are inorganically modified, introduced into the mold, shaped, maintained, and cut to make a grade A polystyrene board. The grade A polystyrene board obtained by this method not only has a high thermal conductivity (the thermal conductivity is generally 0.065W / (m.K ) above), the insulation effect is poor, and the apparent density is large, the self-heaviness is large during the application process, and the risk of falling off is high

Method used

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  • Preparation method of A-grade modified polystyrene board

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Please refer to figure 1 , a preparation method of A-level modified polystyrene board, comprising the steps:

[0018] S1, pre-expanding to obtain pre-expanded polystyrene particles with a preset bulk density;

[0019] The step S1 is specifically:

[0020] The expandable polystyrene beads are pre-expanded to obtain pre-expanded polystyrene particles with a preset bulk density, where the preset bulk density is 4-15 kg / cubic.

[0021] Preferably, when the preset bulk density is 5-10 kg / m3, the obtained A-grade modified polystyrene board has significantly improved thermal insulation performance, and the pre-foaming process is a primary foaming process or a secondary foaming process.

[0022] S2, coating the pre-expanded polystyrene particles once with inorganic silicate composite raw materials, and drying and dispersing to obtain a coating mixture;

[0023] The inorganic silicate composite raw materials are recorded in parts by weight as 50-70 parts of silicate, 5-10 par...

Embodiment 2

[0034] 1) Screening pre-expanded polystyrene particles with a bulk density of 5 kg / cubic;

[0035] 2) Weigh 60 parts of potassium silicate solution, 10 parts of emulsion, 4 parts of redispersible rubber powder, 1 part of silane coupling agent, and 15 parts of water, after mixing evenly, add the pre-foamed polyphenylene in step 1). vinyl pellets, one coat;

[0036] 3) The polystyrene particles after the primary coating are transferred to an oven at 65° C. for drying for 8 hours, during which stirring and dispersing is performed, and the primary coating polystyrene particles in a dry and dispersed state are finally obtained;

[0037] 4) Weigh 600 parts of Portland cement, 50 parts of vitrified microbeads, 20 parts of hollow glass microbeads, 6 parts of calcium formate, 2 parts of glass fiber, 2 parts of cellulose, 4 parts of redispersible rubber powder, organic 1 part of silicon, after fully mixing, add 315 parts of water to prepare a secondary coating material;

[0038] 5) fu...

Embodiment 3

[0041] 1) Screening pre-expanded polystyrene particles with a bulk density of 6 kg / cubic;

[0042] 2) Weigh 50 parts of potassium silicate, 10 parts of lithium silicate, 10 parts of emulsion, 4 parts of redispersible rubber powder, 1 part of silane coupling agent, and 15 parts of water. Pre-expanded polystyrene particles, one coating;

[0043] 3) The polystyrene particles after the primary coating are transferred to an oven at 65° C. for drying for 8 hours, during which stirring and dispersing is performed, and the primary coating polystyrene particles in a dry and dispersed state are finally obtained;

[0044] 4) Weigh 600 parts of Portland cement, 20 parts of vitrified microbeads, 50 parts of hollow glass microbeads, 6 parts of calcium formate, 2 parts of glass fiber, 2 parts of cellulose, 4 parts of redispersible rubber powder, organic 1 part of silicon, after fully mixing, add 315 parts of water to prepare a secondary coating material;

[0045] 5) fully mix the material ...

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Abstract

The invention provides a preparation method of a grade-A modified polystyrene board. The preparation method comprises the following steps: pre-foaming to obtain pre-foamed polystyrene particles with preset bulk density; carrying out primary coating on the pre-expanded polystyrene particles by using an inorganic silicate composite raw material, and drying and dispersing to obtain a coating mixture; adding water into a cement-based composite raw material, carrying out secondary coating on the coating mixture, and transferring the coating mixture into a mold for compression molding; the A-grade modified polystyrene board is obtained after demolding, drying maintenance and cutting, a coupling agent and a binding agent are added in primary coating, the interfacial compatibility and the primary coating strength are guaranteed, inorganic thermal insulation filler such as vitrified microbeads and hollow glass microbeads is introduced in secondary coating, the cement use amount is further reduced, and therefore it can be known that by introducing the efficient inorganic thermal insulation filler, the thermal insulation performance of the polystyrene board is improved, and the thermal insulation performance of the polystyrene board is improved. The thermal insulation performance of the A-grade modified polystyrene board is improved, and the heat conductivity coefficient is reduced; and the apparent density of the A-grade modified plate is greatly reduced by reducing the cement consumption.

Description

technical field [0001] The invention relates to the field of construction, in particular to a preparation method of a grade A modified polystyrene board. Background technique [0002] The Chinese patent document with the patent number of CN 104773992 A discloses a polyphenyl A-grade fire-proof insulation board and a preparation method thereof, which mainly comprises the steps of disposing cement-based slurry to wrap polystyrene particles, The ethylene particles are inorganically modified, and after being introduced into the mold, they are formed, maintained and cut to make A-level polystyrene board. ) or above), the thermal insulation effect is poor, and the apparent density is large, the application process is self-important, and the risk of falling off is high. SUMMARY OF THE INVENTION [0003] (1) Technical problems to be solved [0004] In order to solve the above problems of the prior art, the present invention provides a preparation method of grade A modified polys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/08C04B28/04C04B111/40
CPCC04B28/04C04B2111/40C04B2201/20C04B2201/32C04B14/24C04B14/22C04B14/42C04B16/08C04B12/04C04B24/42C04B24/24C04B24/383C04B2103/0057C04B38/08C04B38/0067Y02W30/91
Inventor 扈钰龙杨鹏辉
Owner ANHUI SKSHU PAINT CO LTD
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