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Preparation method of high polymer damping plate with excellent noise reduction performance

A polymer and damping plate technology, which is applied in the field of damping plates, can solve the problems of environmental hazards, excessive material consumption, labor costs, etc., and achieve the effects of good physical and mechanical properties, good noise reduction performance, and short cycle time

Inactive Publication Date: 2017-08-18
DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional pipeline noise reduction adopts bandaging method. First, a layer of damping layer is coated on the pipe wall, then one or more layers of sound-absorbing materials are wrapped, and then multiple layers of barbed wire are wrapped, and finally cement is pasted in stages to wrap a pipe. , using a lot of materials, labor-intensive, and long working hours; and the current commonly used damping plate preparation process often uses a large amount of toxic organic solvents, which seriously endangers the environment

Method used

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  • Preparation method of high polymer damping plate with excellent noise reduction performance

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing a polymer damping plate with excellent noise reduction performance, comprising the following steps:

[0031] (1) At -20°C, add deionized water, main initiator tricumyl chloride, LiCl, trifluoromethanesulfonic acid, the first monomer isobutylene, the second monomer alkylstyrene and isobutene into the reactor Pentadiene and tert-butyl acetate are uniformly mixed to obtain a mixed solution; the co-initiator is diluted with hexane or deionized water to obtain a co-initiator system;

[0032] Wherein, in the mixed solution, the concentration of tert-butyl acetate is 2×10 -4 mol / L; the molar ratio of tert-butyl acetate to initiator is 2:1; the co-initiator is a mixture of tris(pentafluorophenyl)gallium and tris(pentafluorophenyl)aluminum, the mass of both The ratio is 1:1; the content of LiCl in deionized water is 50wt%; the molar ratio of the first monomer to the second monomer is 10:1; the amount of trifluoromethanesulfonic acid added is 10wt% of the ...

Embodiment 2

[0038] A method for preparing a polymer damping plate with excellent noise reduction performance, comprising the following steps:

[0039] (1) At -100°C, add deionized water, main initiator water, H2SO4, sodium lauryl sulfate, the first monomer isobutylene, the second monomer alkylstyrene and isoprene to the reactor Alkene and triethylamine are mixed uniformly to obtain a mixed solution; the co-initiator is diluted with hexane or deionized water to obtain a co-initiator system;

[0040] Wherein, in the mixed solution, the concentration of triethylamine is 1×10 -2 mol / L; the molar ratio of triethylamine to initiator is 10:1; the co-initiator is a mixture of tris(pentafluorophenyl)gallium and tris(pentafluorophenyl)aluminum, the mass of both The ratio is 1:1; the content of H2SO4 in deionized water is 5wt%; the molar ratio of the first monomer to the second monomer is 70:1; the addition amount of sodium lauryl sulfate is 0.5wt of the monomer mass %;

[0041] (2) At -100°C, ad...

Embodiment 3

[0046]A method for preparing a polymer damping plate with excellent noise reduction performance, comprising the following steps:

[0047] (1) At -40°C, add deionized water, main initiator dicumyl chloride, HBF4, sodium lauryl sulfate, the first monomer isobutylene, the second monomer alkylstyrene, Propiophenone; co-initiator adopts hexane or deionized water dilution to make co-initiator system;

[0048] Wherein, in the mixed solution, the concentration of propiophenone is 2×10 -3 mol / L; the mol ratio of propiophenone and initiator is 4:1; Described co-initiator is the mixture of three (pentafluorophenyl) gallium, three (pentafluorophenyl) aluminum, and the mass ratio of the two is 1:1; the content of HBF4 in deionized water is 15wt%; the molar ratio of the first monomer to the second monomer is 20:1; the addition of sodium lauryl sulfate is 2wt% of the monomer mass;

[0049] (2) At -40°C, add the co-initiator system to the mixed solution in the reactor, carry out the polymer...

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Abstract

The invention discloses a preparation method of a high polymer damping plate with excellent noise reduction performance. The preparation method comprises a surface layer and a damping layer, wherein the surface layer is prepared from a random copolymer of isobutene, alkyl styrene and / or isoprene, C5 petroleum resin, polypropylene, perlite, fine sand and wollastonite powder; and the surface layer is prepared from asphalt, talcum powder, waste rubber powder, glass fibers and rosin resin. The preparation method is simple in operation, mild in process conditions and short in preparation period, and the prepared damping plate has excellent physical and mechanical performance.

Description

[0001] Technical field: [0002] The invention relates to a damping plate, in particular to a preparation method of a polymer damping plate with excellent noise reduction performance. [0003] Background technique: [0004] Nowadays, many mechanical equipment will generate vibration and noise more or less during work and operation, such as automobiles, ships, airplanes and other vehicles; air conditioners, refrigerators and other household appliances, and various machine operations, etc. The instrument of the machine will become unstable or inaccurate due to strong vibration, and in severe cases, the internal structure will be damaged due to fatigue, which will greatly shorten the service life of the machine. At the same time, the noise generated by vibration pollutes the environment, endangers people's physical and mental health, and reduces people's normal production and living quality. In order to improve the working and living environment, people try to study various metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30B32B11/02B32B11/04B32B37/12C08L95/00C08L19/00C08L93/04C08K7/14C08L23/22C08L57/02C08L23/12C08K3/34C08F210/10C08F212/12C08F210/12C08F236/08
CPCB32B11/02B32B11/046B32B27/30B32B37/1284B32B2262/101B32B2264/104B32B2307/102B32B2307/56C08F210/10C08F210/12C08K2201/011C08L23/22C08L95/00C08L2205/03C08L19/003C08L93/04C08K7/14C08K3/34C08F212/12C08F236/08C08L57/02C08L23/12
Inventor 王海燕
Owner DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD