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Rubber sound insulation material as well as preparation method and application thereof

A sound insulation material and rubber technology, applied in the directions of transportation and packaging, superstructure, superstructure sub-assembly, etc., can solve the problems of poor interface bonding, insufficient bonding, difficulty in achieving sound insulation effect, etc., and achieve excellent and good aging resistance. Acid and alkali resistance, excellent sound insulation effect

Inactive Publication Date: 2022-06-10
XUZHOU COLLEGE OF INDAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the materials used in automobiles are mainly high-foaming rubber-plastic materials with multi-layer composite structure or traditional resin sound insulation materials; The phenomenon of peeling between layers occurs, so that the gaps cannot be filled, which in turn affects the density of the unit dense surface, resulting in a gradual decline in the sound insulation effect
In the sound insulation layer of traditional resin sound insulation materials, although it is a composite material, it is difficult to achieve the ideal density because the molecules of various thermoplastic resins are not tightly bonded, and the interface between the thermoplastic resin and the filler is poorly bonded, which also affects the density of the unit dense surface. Sound insulation

Method used

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  • Rubber sound insulation material as well as preparation method and application thereof
  • Rubber sound insulation material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of a rubber sound insulation material, comprising the following steps:

[0029] (1) Weighing: Weigh the raw materials according to the following parts by weight: 100 parts of polyurethane prepolymer; 15 parts of nitrile rubber; 25 parts of EPDM rubber; 10 parts of polyvinyl chloride; 50 parts of ethylene-vinyl acetate copolymer 8 parts of cross-linking agent p-chlorobenzoyl peroxide, for use;

[0030] (2) Preparation of polyurethane prepolymer:

[0031] In a nitrogen atmosphere, propylene glycol and isophorone diisocyanate are reacted under the action of catalyst dibutyltin dilaurate at 85 ° C for 4 h to obtain a polyurethane prepolymer;

[0032] Wherein, the ratio of the amount of propylene glycol to isophorone diisocyanate material is 2.3:1, and the ratio of the amount of propylene glycol and isophorone diisocyanate total material to the amount of dibutyltin dilaurate material is 150:1;

[0033] (3) Preparation of rubber sound insulation materia...

Embodiment 2

[0036] A preparation method of a rubber sound insulation material, comprising the following steps:

[0037] (1) Weighing: Weigh the raw materials according to the following parts by weight: 100 parts of polyurethane prepolymer; 25 parts of nitrile rubber; 22 parts of EPDM rubber; 13 parts of polyvinyl chloride; 35 parts of ethylene-vinyl acetate copolymer 6 parts of cross-linking agent dicumyl peroxide, for subsequent use;

[0038] (2) Preparation of polyurethane prepolymer:

[0039] In a nitrogen atmosphere, diethylene glycol and tetramethylene-1,4-diisocyanate are reacted under the action of a catalyst dibutyltin dilaurate at 90 °C for 3 hours to obtain a polyurethane prepolymer;

[0040] Among them, the ratio of the amount of diethylene glycol to tetramethylene-1,4-diisocyanate is 2.1:1, and the total amount of diethylene glycol and tetramethylene-1,4-diisocyanate is the same as that of dilaurin The ratio of the amount of dibutyltin acid is 140:1;

[0041] (3) Preparatio...

Embodiment 3

[0044] A preparation method of a rubber sound insulation material, comprising the following steps:

[0045] (1) Weighing: Weigh the raw materials according to the following parts by weight: 100 parts of polyurethane prepolymer; 30 parts of nitrile rubber; 20 parts of EPDM rubber; 15 parts of polyvinyl chloride; 25 parts of ethylene-vinyl acetate copolymer ; 4 parts of cross-linking agent p-chlorobenzoyl peroxide, standby;

[0046] (2) Preparation of polyurethane prepolymer:

[0047] In a nitrogen atmosphere, 1,4-butanediol and methylenebis-4,4-cyclohexyl diisocyanate are reacted at 100° C. for 2h under the action of a catalyst dibutyltin dilaurate to obtain a polyurethane prepolymer;

[0048]Among them, the ratio of 1,4-butanediol to methylenebis-4,4-cyclohexyl diisocyanate is 2:1, 1,4-butanediol and methylenebis-4,4-cyclohexyl The ratio of the total amount of hexyl diisocyanate to the amount of dibutyltin dilaurate is 160:1;

[0049] (3) Preparation of rubber sound insulat...

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Abstract

The invention relates to the technical field of rubber preparation, in particular to a rubber sound insulation material and a preparation method and application thereof, and the rubber sound insulation material is prepared from the following raw materials in parts by weight: 100 parts of polyurethane prepolymer; 15-30 parts of nitrile rubber; 20 to 25 parts of ethylene propylene diene monomer; 10 to 15 parts of polyvinyl chloride; 25 to 50 parts of an ethylene-vinyl acetate copolymer; 4-8 parts of a cross-linking agent; 5-6 parts of stearic acid; 8-10 parts of zinc oxide; the polyurethane prepolymer is prepared from diisocyanate and polyhydric alcohol. The coating further comprises the following raw materials in parts by weight: 2-4 parts of a VOC screening agent, 5-6 parts of white oil and 20-30 parts of carbon black. The rubber sound insulation material with elasticity and high unit dense surface density is prepared from the polyurethane prepolymer, the nitrile rubber, the ethylene propylene diene monomer, the polyvinyl chloride, the ethylene-vinyl acetate copolymer and the cross-linking agent.

Description

technical field [0001] The invention relates to the technical field of rubber preparation, in particular to a rubber sound insulation material and a preparation method and application thereof. Background technique [0002] When a sound wave propagates in the air, various substances that are easy to absorb energy are generally used to consume the energy of the sound wave, so that the sound wave is blocked by consumption and cannot pass directly during the propagation process, which is called sound insulation; The receiver is separated to isolate the transmission of air noise, which can effectively reduce the degree of noise pollution. Sound insulation material refers to a material that can isolate, partition and separate sound or noise and vibration sound; the sound insulation volume follows the principle of quality law, that is, the greater the unit density of the sound insulation material, the greater the sound insulation volume, and the surface density and sound insulation...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L9/02C08L23/16C08L27/06C08L23/08C08L91/06C08K5/14B60R13/02B60R13/08
CPCC08L75/04B60R13/02B60R13/0815C08L9/02C08L23/16C08L27/06C08L23/0853C08L91/06C08K5/14
Inventor 王再学徐云慧张兆红张双也王兆威
Owner XUZHOU COLLEGE OF INDAL TECH