Polyurethane sound insulation coating and production process thereof

A technology of sound insulation coating and production process, applied in polyurea/polyurethane coatings, anti-corrosion coatings, fire-retardant coatings, etc., can solve the problems of insufficient polyurethane strength, high production cost, unstable damping performance, etc.

Active Publication Date: 2022-01-11
安徽瑞联节能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The impact of noise on people's physical and mental health is increasing. The sound insulation effect of existing residential quarter floors is poor. The traditional sound insulation method is to lay sound insulation materials with special structures. Research and development of sound insulation composite materials
[0003] With the development of the coatings industry, sound insulation coatings have emerged, especially polyurethane sound insulation coatings. Polyurethane (PU) has good wear resistance and high elasticity. Its macromolecular main chain contains glass above and below room temperature. The rigid segment and the flexible segment at a higher temperature can obtain an ideal damping temperature range and have a certain sound insulation performance. Existin...

Method used

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  • Polyurethane sound insulation coating and production process thereof
  • Polyurethane sound insulation coating and production process thereof
  • Polyurethane sound insulation coating and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a modified hollow glass microsphere, which is made by the following steps:

[0037] Step A1. Soak 15 g of hollow glass microspheres in 200 mL of sodium hydroxide solution with a mass fraction of 5%, stir and soak for 6 hours at a rotating speed of 200 r / min, then stop stirring and soak for 24 hours, then wash with distilled water for 3 times, filter with suction, and The cake was washed until the washing solution was neutral, and then dried in an oven at 80°C to constant weight to obtain pretreated glass beads;

[0038] Step A2. Add 0.05mol 9,9'-bis(4-hydroxyphenyl)fluorene to 190mL 1,4-dioxane, under nitrogen protection, stir and heat up to 60°C, dropwise add 0.025mol divinyldi Chlorosilane, control the dropping rate at 1 drop / second, after the dropwise addition, stir and react for 4 hours, after the reaction, remove 1,4-dioxane by rotary evaporation to obtain the intermediate product 1;

[0039] Step A3: Add 0.05 mol of pentafluoropentanethio...

Embodiment 2

[0043] This embodiment provides a modified hollow glass microsphere, which is made by the following steps:

[0044] Step A1. Soak 17g of hollow glass microspheres in 220mL of sodium hydroxide solution with a mass fraction of 8%, stir and soak for 6h at a rotating speed of 250r / min, then stop stirring and soak for 24h, then wash with distilled water for 4 times, suction filter, filter The cake was washed until the washing solution was neutral, and then dried in an oven at 80°C to constant weight to obtain pretreated glass beads;

[0045] Step A2. Add 0.05mol 9,9'-bis(4-hydroxyphenyl)fluorene to 220mL 1,4-dioxane, under the protection of nitrogen, stir and heat up to 60°C, dropwise add 0.025mol divinyldi Chlorosilane, control the dropping rate to 1 drop / second, after the dropwise addition, stir and react for 5h, after the reaction, remove 1,4-dioxane by rotary evaporation to obtain the intermediate product 1;

[0046] Step A3: Add 0.05 mol of pentafluoropentanethiol and 70 mL o...

Embodiment 3

[0050] This embodiment provides a modified hollow glass microsphere, which is made by the following steps:

[0051] Step A1, soak 18g of hollow glass microspheres in 250mL of sodium hydroxide solution with a mass fraction of 10%, stir and soak for 6h at a rotating speed of 300r / min, then stop stirring and soak for 24h, then wash with distilled water 5 times, suction filter, filter The cake was washed until the washing solution was neutral, and then dried in an oven at 80°C to constant weight to obtain pretreated glass beads;

[0052] Step A2. Add 0.05mol 9,9'-bis(4-hydroxyphenyl)fluorene to 250mL 1,4-dioxane, under nitrogen protection, stir and heat up to 60°C, dropwise add 0.025mol divinyl di Chlorosilane, control the dropping rate to 2 drops / second, after the dropping, stir the reaction for 6h, after the reaction, remove the 1,4-dioxane by rotary evaporation to obtain the intermediate product 1;

[0053] Step A3: Add 0.05 mol of pentafluoropentanethiol and 80 mL of carbon t...

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Abstract

The invention relates to a polyurethane sound insulation coating and a production process thereof, belonging to the technical field of preparation of sound insulation materials. The production process comprises the following steps: 1, mixing polyester diol, isocyanate, epoxy resin and dibutyltin dilaurate according to a formula ratio, carrying out heating to 75-90 DEG C, and performing stirring for a reaction for 1-2 hours to obtain a polyurethane prepolymer; and 2, adding N-methyl pyrrolidone into the polyurethane prepolymer, carrying out stirring and reacting for 20-60 minutes, adding triethylamine and water, conducting heating to 70-90 DEG C, performing stirring for 2-3 hours, then adding modified hollow glass beads, aminated tetrapod-like zinc oxide whiskers, a defoaming agent and a coalescing agent, and carrying out stirring and reacting at 70-80 DEG C for 1-2 hours to obtain the polyurethane sound insulation coating. According to the invention, by adding the modified hollow glass beads and the modified tetrapod-like zinc oxide whiskers, the polyurethane coating is endowed with excellent sound insulation and noise reduction performance, and the problems that an existing floor in a building of a community is poor in sound insulation effect and tedious in construction are solved.

Description

technical field [0001] The invention belongs to the technical field of sound-insulating material preparation, and in particular relates to a polyurethane sound-insulating coating and a production process thereof. Background technique [0002] The impact of noise on people's physical and mental health is increasing. The sound insulation effect of existing residential quarter floors is poor. The traditional sound insulation method is to lay sound insulation materials with special structures. Research and development of sound insulation composite materials. [0003] With the development of the coatings industry, sound insulation coatings have emerged, especially polyurethane sound insulation coatings. Polyurethane (PU) has good wear resistance and high elasticity. Its macromolecular main chain contains glass above and below room temperature. The rigid segment and the flexible segment at a higher temperature can obtain an ideal damping temperature range and have a certain sound...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D163/00C09D5/08C09D7/62
CPCC09D175/04C09D5/18C09D5/08C09D7/62C09D7/70C08L63/00C08K9/08C08K7/28C08K9/06C08K7/08
Inventor 范伟王壮王智伟文礼冯家玉徐成余亚梅沈佳佳王永回
Owner 安徽瑞联节能科技股份有限公司
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