CN1480325A

CN1480325A - Compound damping board and its manufacturing method

Info

Publication number: CN1480325A
Application number: CNA031467563A
Authority: CN
Inventors: 戚广连
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-05-31
Filing date: 2003-06-24
Publication date: 2004-03-10
Anticipated expiration: 2023-06-24
Also published as: CN1253308C

Abstract

A composite damping plate used as the floor in coach is composed of two surface plates and one damping sandwich plate, and is prepared through preparing damping sandwich plate from regenerated rubber or waste plastics, coating adhesive on its both surfaces, putting it between two surface plates, and hot pressing. Its advantage is high effect to damp vibration and noise.

Description

Composite damping plate and manufacture method thereof

Technical field

The present invention relates to a kind of transport facility manufacturing material, particularly relate to a kind of motor passenger vehicle floor composite damping plate.

Background technology

At present, the bus deck material mostly is veneer sheet, and sound insulation, damping effect are poor, are eliminated gradually.

Chinese patent ZL98114310.5 discloses a kind of bus deck damping panel, this patent describe this sandwich plate by veneer sheet---damping panel---veneer sheet is formed by stacking, the material of main part of visoelasticity glue is a natural rubber in the damping panel, account for 30-60%, preparation condition is relatively harsher, and productive costs is also high.

Summary of the invention

The objective of the invention is to overcome the prior art deficiency, provide a kind of damping good, a kind of composite damping plate and the manufacture method thereof that can accomplish scale production again.

The composite damping plate adds hot pressing by bottom plate, sandwiched damping board, sheet surface layer and forms.Composite damping plate provided by the invention is characterized in that: sandwiched damping board is that major ingredient is made with the regeneratd rubber, and by weight percentage, its prescription is as follows:

Regeneratd rubber 35-60%; All the other have for Charge: pitch 5-20%; Waste plastics powder 5-20%; Mica powder 10-30%; Sulfur 2-5%; Zinc oxide 2-5%; Dioctyl phthalate 2-5%; Silica flour, calcite in powder, ball clay powder, wollastonite in powder are selected wherein one or more for use, and it adds up to consumption is 14-30%.

Regeneratd rubber can be a used tire, the scraped car band of bicycle, three-wheel vehicle, and the waste of rubbers such as old sebific duct is pulverized through grinder, and making granularity is 20-80 purpose powder, the powder in other Charge, its granularity requires to be the 20-100 order.

The sandwiched damping board manufacture method is regnerated rubber powder to be carried out desulfurization by prior art handle, and after adding Charge and puddling, under normal temperature condition, through the opening rubber mixing machine extrusion bar, thickness is 1-8mm.

Bottom plate, sheet surface layer can be with wood based panel or bamboo scutums, and its thickness is 3-12mm

The composite damping panel forming method is after two outside faces with sandwiched damping board soak attached adhesive agent, to place between bottom plate and the sheet surface layer, is tiled on the hot press work top, the 8-16Mpa that exerts pressure heated after 80-140 ℃, after pressing 5-20 minute, be cooled to ambient temperature, moulding.

The present invention compares with prior art, has utilized waste rubber, waste plastics, favourable protection environment; Production technology is simple, and is few with equipment, low cost of manufacture, and the average noise reduction index of this composite damping plate is 8-10dB (A), can be widely used in motor passenger vehicle, train, steamer and the building needs sound insulation, the occasion of damping.

Description of drawings

Fig. 1 is a composite damping plate structure scheme drawing of the present invention

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail.

Embodiment 1

Bottom plate 1, sheet surface layer 3 is a wooden plywood, thickness is 6mm; Sandwiched damping board thickness is 3mm, and its prescription is: regnerated rubber powder 45%, pitch 6%, waste plastics powder 5%, Sulfur 3%, mica powder 10%, zinc oxide 3%, wollastonite in powder 26%, dioctyl phthalate 2%; The regeneratd rubber granularity is 40 orders, and the granularity of powder is 60 orders in the Charge; Its method is that the regnerated rubber powder desulfurization is handled, and puts into puddle mixer, drops into Charge again, stirs, and this mixture is placed on is squeezed into the sandwiched damping board sheet material on the opening rubber mixing machine again, and thickness is 3mm; Sandwiched damping board two outside faces all soak attached adhesive agent, place the bottom plate, between the sheet surface layer, be tiled in the 10Mpa that exerts pressure on the hot press bench board after, heat to 120 ℃, under this pressure, temperature conditions, keep after 15 minutes, cool to ambient temperature, remove pressure, make the composite damping plate.

Embodiment 2

Bottom plate 1, sheet surface layer 3 are bamboo plywood, and thickness is 7mm; Sandwiched damping board thickness is 2mm, and its prescription is a regeneratd rubber 40%, pitch 6%, Sulfur 3%, waste plastics powder 8%, mica powder 15%, calcite in powder 18%, dioctyl phthalate 5%, zinc oxide 5%; The granularity of powder is 80 orders in the Charge; The manufacture method step is with embodiment 1, and the condition of molding of its composite damping plate is the 10Mpa that exerts pressure, and heats to 140 ℃ pressing 20 minutes.

Embodiment 3

Bottom plate 1 bamboo plywood, thickness 3mm; Sheet surface layer 3 6mm of wooden plywood; Sandwiched damping board thickness is 6mm, and its prescription is a regnerated rubber powder 35%, mica powder 20%, waste plastics powder 5%, pitch 5%, calcite in powder 15%, ball clay powder 14%, Sulfur 2%, zinc oxide 2%, dioctyl phthalate 2%; The regnerated rubber powder granularity is 80 orders, and the particles of powder degree is 40 orders in the Charge; The manufacture method step is with embodiment 1, and its composite damping sheet metal forming condition is the 16Mpa that exerts pressure, and is heated to 140 ℃, pressing 6 minutes.

Embodiment 4

Bottom plate 1, sheet surface layer 3 is wooden plywood, and thickness is 7mm; Sandwiched damping board thickness 4mm, its prescription are regnerated rubber powders 40%, mica powder 20%, molding powder 5%, ball clay powder 20%, pitch 5%, Sulfur 2%, zinc oxide 3%, dioctyl phthalate 5%; Regnerated rubber powder granularity 30 orders, the particles of powder degree is 20 orders in its Charge; The manufacture method step is with embodiment 1, and its composite damping sheet metal forming condition is the 16Mpa that exerts pressure, and is heated to 120 ℃, pressing 10 minutes.

Embodiment 5

Bottom plate 1, sheet surface layer 3 are wooden plywood, and thickness is 7mm; Sandwiched damping board thickness is 6mm, and its prescription and the practice are with behind 20% asphalt melting, put into puddle mixer; Drop into regnerated rubber powder 35%, its granularity is 60 orders, puts Charge mica powder 15% again, waste plastics powder 5%, wollastonite in powder 8%, calcite in powder 11%, Sulfur 2%, zinc oxide 2%, dioctyl phthalate 2%, after stirring, last rubber mixing machine is made 6mm, sheet material; Wherein the particles of powder degree is 20 orders in the Charge; Composite damping plate manufacturing step is with embodiment 1, and its condition of molding is the 16Mpa that exerts pressure, and is heated to 80 ℃, pressing 8 minutes.

Claims

1, a kind of composite damping plate, the sandwiched damping board (2) that is soaked with adhesive agent (4) by bottom plate (1), sheet surface layer (3) and two outside faces is compositely suppressed to form, it is characterized in that: sandwiched damping board is that major ingredient is made with the regeneratd rubber, by weight percentage, its prescription is as follows: regeneratd rubber 35～60%, and all the other have for Charge: pitch 5～20%; Waste plastics powder 5-20%; Mica powder 10-30%; Sulfur 2-5%; Zinc oxide 2-5%; Dioctyl phthalate 2-5%; Silica flour, calcite in powder, ball clay powder, wollastonite in powder are selected wherein one or more for use, and it adds up to consumption is 14～30%; Sandwiched damping board, its thickness 1-8mm.

2, a kind of method of making the product of claim 1, it is characterized in that: the manufacture method of described sandwiched damping board is that regnerated rubber powder is handled through desulfurization, after adding Charge and puddling, under normal temperature condition, pushes on opening rubber mixing machine and forms; The forming method of described composite damping plate is after two outside faces with sandwiched damping board (2) soak attached adhesive agent (4), place between bottom plate (1) and the sheet surface layer (3), be tiled on the hot press work top, 8～16Mpa exerts pressure, after being warmed to 80～140 ℃, pressing 5-20 minute, be cooled to ambient temperature, make.

3, according to the described a kind of composite damping plate of claim 1, it is characterized in that: described regeneratd rubber is meant used tire, the scraped car band of bicycle, three-wheel vehicle, the waste of the various rubbers of old sebific duct, pulverize through grinder, making granularity is 20-80 purpose powder.

4, according to the described a kind of composite damping plate of claim 1, it is characterized in that: described Charge, the granularity of powder wherein require to be the 20-100 order.