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Preparation method and application of coated porous expanded perlite

A technology of pore expansion and perlite, applied in the field of preparation of coated porous expanded perlite, which can solve the problems of size limitation, reduction of actual use space, inconvenience of use and construction, etc., to enhance strength and toughness, and improve cohesion , good sound insulation effect

Inactive Publication Date: 2021-05-25
广东施彩新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These sound-absorbing panels are not easy to store, transport, and assemble due to size limitations, and some materials need additional protection and decorative layers on the surface
Moreover, rock / mineral wool materials are harmful to the human body, and there is a risk of carcinogenicity if used improperly; polystyrene foam sound-absorbing panels have poor air permeability and heat resistance, and will release harmful gases in case of fire; Metal plate sound-absorbing materials and micro-perforated structure sound-absorbing panels are too expensive and have not been widely used
Perlite sound-absorbing materials often need to reach a large thickness to achieve effective sound insulation, and the resulting problem is the inconvenience of use and construction. If it is necessary to carry out sound insulation transformation on existing projects, the heavy sound insulation material will not only affect the The construction will cause inconvenience, reduce the actual use space, and also have a negative impact on the appearance of the renovation

Method used

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  • Preparation method and application of coated porous expanded perlite
  • Preparation method and application of coated porous expanded perlite
  • Preparation method and application of coated porous expanded perlite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method of coated porous expanded perlite, comprising the steps of:

[0038] (1) Get the porous expanded perlite, dry, grind, and sieve to obtain a particle size of 60 mesh porous expanded perlite powder;

[0039] (2) Add 5 parts by weight of water-based polyurethane monomer, 20 parts by weight of pure water, 1 part by weight of ethylene glycol, 0.01 parts by weight of carbodiimide and 3 parts by weight of porous expanded perlite powder into the reactor , heated in a water bath at a heating temperature of 50°C, stirred for 24 hours, cooled to room temperature with cold water, and an intermediate product was obtained;

[0040] (3) The intermediate product was discharged, filtered under reduced pressure, and dried in an oven at a temperature of 60° C. for 8 hours to obtain coated porous expanded perlite.

[0041] An application of coated porous expanded perlite in a paste-like sound-insulating coating, the paste-like sound-insulating coating is composed of t...

Embodiment 2

[0058] A preparation method of coated porous expanded perlite, comprising the steps of:

[0059] (1) Get the porous expanded perlite, dry, grind, and sieve to obtain the porous expanded perlite powder with a particle size of 80 mesh;

[0060] (2) 10 parts by weight of water-based polyurethane monomer, 30 parts by weight of pure water, ethylene glycol of 3 parts by weight, aziridine of 0.05 parts by weight and porous expanded perlite powder of 6 parts by weight are added to the reactor successively, Heating in a water bath at 62°C, stirring for 10 hours, cooling to room temperature with cold water to obtain an intermediate product;

[0061] (3) The intermediate product was discharged, filtered under reduced pressure, and dried in an oven at a temperature of 50°C for 10 hours to obtain coated porous expanded perlite.

[0062] An application of coated porous expanded perlite in a paste-like sound-insulating coating, the paste-like sound-insulating coating is composed of the foll...

Embodiment 3

[0079] A preparation method of coated porous expanded perlite, comprising the steps of:

[0080] (1) Get the porous expanded perlite, dry, grind, and sieve to obtain the porous expanded perlite powder with a particle size of 100 mesh;

[0081] (2) Add 6 parts by weight of water-based polyurethane monomer, 25 parts by weight of pure water, 2 parts by weight of ethylene glycol, 0.03 parts by weight of azobisisobutyronitrile and 5 parts by weight of porous expanded perlite powder Reactor, heated in a water bath, the heating temperature is 65 ° C, stirred for 10 hours, cooled to room temperature with cold water, and the intermediate product was obtained;

[0082] (3) The intermediate product was discharged, filtered under reduced pressure, and dried in an oven at a temperature of 70° C. for 5 hours to obtain coated porous expanded perlite.

[0083] An application of coated porous expanded perlite in a paste-like sound-insulating coating, the paste-like sound-insulating coating is...

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Abstract

The invention discloses a preparation method of coated porous expanded perlite. According to the preparation method, a waterborne polyurethane monomer, purified water, ethylene glycol, an initiator and porous expanded perlite are used as raw materials to prepare the organic polymer-coated porous expanded perlite. As an expanded perlite matrix is coated with aqueous polyurethane, chemical reaction or physical winding can occur, so the cohesiveness of the modified expanded perlite is effectively improved, and meanwhile the porous expansion performance of the perlite is kept. The coated porous expanded perlite prepared by the method is applied to a pasty sound insulation coating; the perlite contains a large number of pores and has remarkable sound attenuation and sound insulation effects; and meanwhile, the coating waterborne polyurethane can be organically combined with the coating due to the cohesiveness of the waterborne polyurethane, so the strength and toughness of the coating are enhanced. The pasty sound insulation coating can be directly sprayed, rolled or brushed on a surface needing sound insulation transformation, can be naturally dried at room temperature, and is simple in operation and good in sound insulation effect.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a preparation method and application of coated porous expanded perlite. Background technique [0002] The noise pollution in modern society, especially the harm of indoor noise pollution to health and daily life has gradually attracted people's attention. Therefore, many modern buildings need to consider their internal sound insulation effect when designing. Sound insulation materials can not only improve the indoor sound quality environment, but also play a very important role in noise control. [0003] There are many kinds of traditional building sound-absorbing materials, and the common ones are gypsum decorative sound-absorbing panels, glass wool decorative sound-absorbing panels, rock / mineral wool decorative sound-absorbing panels, perlite decorative sound-absorbing panels, polystyrene foam decorative sound-absorbing panels board, metal decorative sound-absorbing board, micro-perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/62
CPCC09D7/62C08K9/10C08K7/26
Inventor 叶邦君谢冠群王小霞钟小秋
Owner 广东施彩新材料科技有限公司