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Magnetic attraction type noise reduction damping plate and machining process thereof

A processing technology and damping plate technology, which are applied in the field of magnetic suction-type noise-absorbing damping plates and their processing technology, can solve the problems of poor stability and environmental pollution of superimposed damping plates, and achieve smooth appearance and flexibility. , Improve the effect of high temperature extrusion softness

Pending Publication Date: 2020-04-07
MAANSHAN LIANHONG SYNTHETIC MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems in the prior art that the magnetic absorption type noise reduction damping plate is easy to cause environmental pollution and the stability of the superimposed damping plate is poor in specific applications, the present invention provides a magnetic absorption type magnetic absorption type noise reduction damping plate and its processing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The magnetic absorption type sound-absorbing damping plate of the present embodiment is formulated as follows in parts by weight: c5 resin, 26-28, EVA resin 3-5, modified resin 7-9, mica powder 15-18, light calcium carbonate 12-5 13. 8-12 heavy calcium carbonate, 20-25 magnetic powder, 1-2 fibers, 3-6 vibration-absorbing and sound-absorbing auxiliary agents, and the sound-absorbing auxiliary agent is modified starch.

[0039] The specific steps are as follows:

[0040] S1. Stirring synthesis: put the three kinds of resins, mica powder, light calcium carbonate, heavy calcium carbonate, magnetic powder, fiber and modified starch into the heating mixer in sequence for hot-melt stirring synthesis, and the stirring time is 40-60min , the oil outlet temperature of the mixer is 225±25°C, and the oil return temperature is 210±20°C, so as to ensure that the output temperature is ≥110°C;

[0041] S2. Extrusion: transfer the semi-fluid material after hot-melt synthesis into the e...

Embodiment 2

[0047] The magnetic absorption type magnetic absorption type noise reduction damping plate and its processing technology of this embodiment, the steps of the base body are as in embodiment 1, but a more optimized solution: the formula is, each weight part: c5 resin is 27, EVA resin is 4, modified Resin 9, mica powder 16, light calcium carbonate 12, heavy calcium carbonate 10, magnetic powder 22, fiber 2, modified starch 5.

[0048] The specific steps are as follows:

[0049] S1. Stirring and synthesis: put three kinds of resins, mica powder, light calcium carbonate, heavy calcium carbonate, magnetic powder, crushed fiber and modified starch in each weight part into a heating mixer for hot-melt stirring and synthesis, and the stirring time is 50min , the oil outlet temperature of the mixer is 240°C, and the oil return temperature is 210°C to ensure that the output temperature is ≥110°C; the modified starch is colloidal in the semi-fluid, which improves the fusion degree of each...

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Abstract

The invention discloses a magnetic attraction type noise reduction damping plate and a machining process thereof and belongs to the technical field of automobile damping plate manufacturing. The formula of the damping plate is that the damping plate comprises the following components in parts by weight: 36-42 parts of resin, 15-18 parts of mica powder, 20-25 parts of calcium carbonate, 20-25 partsof magnetic powder, 1-2 parts of fibers and 3-6 parts of vibration reduction and sound absorption auxiliary agent. In the components, no asphalt material polluting the environment is added, the resinis combined with inorganic materials such as the mica powder, the calcium carbonate and the magnetic powder to replace asphalt, the effects of ductility and flexibility of the asphalt are achieved, furthermore, the inorganic materials are high in specific gravity and are over 60%, the heat resistance and the flame retardance of a product are improved, the increase of the production cost caused byadding the resin is balanced, in addition, under the action of the vibration reduction and sound absorption auxiliary agent and the sectional type calendering and film coating process, inorganic components are fully fused with the resin in the manufacturing process, the effective vibration reduction effect is achieved, the propagation characteristic of sound waves is changed, the energy loss of sound is increased, and therefore the noise is lowered.

Description

technical field [0001] The invention belongs to the technical field of automobile damping plate production, and more specifically relates to a magnetic-absorbing type magnetic-absorbing noise-absorbing damping plate and a processing technology thereof. Background technique [0002] At present, most cars use traditional asphalt damping plates. Asphalt is a brown-black organic gelatinous substance, including natural asphalt, petroleum asphalt, shale asphalt and coal tar asphalt. The main components of asphalt and its smoke are phenols, compounds, and asphalt and its smoke are phenols, compounds, anthracene, naphthalene, pyridine, etc., which are irritating to the skin and mucous membranes, and the asphalt damping board has a strong Carcinogenic effect, which will endanger the health of personnel, so how to reduce the impact of these harmful ingredients is an eternal problem faced by technicians. [0003] Moreover, with the advancement of manufacturing technology in the automo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L57/02C08L23/08C08L3/00C08K3/34C08K3/26B60R13/08B29C69/00B29L7/00
CPCC08L57/02B60R13/0815B29C48/0011B29C48/0021B29L2007/002C08L2205/035C08L2201/02C08L2201/08C08K2003/265C08K2201/014C08L23/0853C08L3/00C08K3/34C08K3/26
Inventor 刘福吴铭伍国栋刘崑芝
Owner MAANSHAN LIANHONG SYNTHETIC MATERIALS