CN1253308C

CN1253308C - Compound damping board and its manufacturing method

Info

Publication number: CN1253308C
Application number: CN 03146756
Authority: CN
Inventors: 戚广连
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-05-31
Filing date: 2003-06-24
Publication date: 2006-04-26
Anticipated expiration: 2023-06-24
Also published as: CN1480325A

Abstract

The present invention discloses a compound damping board for passenger vehicle floors and a manufacturing method thereof. The compound damping board is formed by heating and pressing a bottom layer board, a damping interlayer board and a surface layer board, wherein the damping interlayer board is made of regenerated rubber and waste plastic as raw materials. The compound damping board is manufactured by the way that after being dipped, attached and glued, two outer surfaces of sheet materials of the damping interlayer board are arranged between the bottom layer board and the surface layer board and are heated on a hot press at 80 to 140 DEG C; the pressurization is carried out from 8 to 16MPa for keeping 5 to 20 minutes. The compound damping board has the advantages of simple production technics, less production equipment and low manufacturing cost; particularly the compound damping board uses the waste rubber and plastic and is favorable for environmental protection; the compound damping board has good social benefits. The compound damping board has the advantages of good sound isolation effect and good shock reduction effect; an average noise reduction index is from 8 to 10dB(A); the compound damping board can be widely used for occasions of needing sound isolation and shock reduction in passenger vehicles, trains, ships and buildings.

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 glued board, and sound insulation, damping effect are poor, are eliminated gradually.

Chinese patent ZL98114310.5 discloses a kind of bus deck damping sheet, this patent describe this sandwich plate by glued board---damping sheet---glued board is formed by stacking, the material of main part of viscoplasticity glue is a natural rubber in the damping sheet, account for 30-60%, preparation condition is relatively harsher, and production cost 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 reclaimed rubber, and by weight percentage, its prescription is as follows:

Reclaimed rubber 35-60%; All the other have for inserts: 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%.

Reclaimed rubber can be an old tire, the scraped car band of bicycle, tricycle, and the discarded object of rubbers such as old sebific duct is pulverized through grinder, and making granularity is 20-80 purpose powder, the powder in other inserts, 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 inserts 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 outer surfaces with sandwiched damping board soak attached binding 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 environment 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 schematic diagram 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 reclaimed rubber granularity is 40 orders, and the granularity of powder is 60 orders in the inserts; Its method is that the regnerated rubber powder desulfurization is handled, and puts into mixer, drops into inserts again, stirs, and this compound 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 outer surfaces all soak attached binding agent, place the bottom plate, between the sheet surface layer, be tiled in the 10Mpa that exerts pressure on the hot press workbench after, heat to 120 ℃, under this pressure, temperature conditions, keep after 15 minutes, cool to environment 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 reclaimed 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 inserts; 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 inserts; 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 inserts; 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 mixer; Drop into regnerated rubber powder 35%, its granularity is 60 orders, puts inserts 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 inserts; 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 comprises bottom plate (1), and sheet surface layer (3) is characterized in that: between bottom plate (1) and the sheet surface layer (3) sandwiched damping board (2) is arranged, sandwiched damping board (2) two outer surfaces soak attached binding agent (4); Bottom plate (1) and sheet surface layer (3) are made by glued board; Sandwiched damping board (2) is that major ingredient is made with the reclaimed rubber, by weight percentage, its prescription is as follows: reclaimed rubber 35～60%, all the other are inserts, and pitch 5～20% is arranged, 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, according to the described a kind of composite damping plate of claim 1, it is characterized in that: described reclaimed rubber is meant old tire, the scraped car band of bicycle, tricycle, the discarded object of the various rubbers of old sebific duct, pulverize through grinder, making granularity is 20～80 purpose powders.

3, according to the described a kind of composite damping plate of claim 1, it is characterized in that: described inserts, it is 20～100 orders that the granularity of powder wherein requires.

4, a kind of method of making the product of claim 1 is characterized in that: make sandwiched damping board earlier, its manufacture method is that regnerated rubber powder is handled through desulfurization, after adding inserts and puddling, under normal temperature condition, pushes on opening rubber mixing machine and forms; Described composite damping plate, its forming method is after two outer surfaces with sandwiched damping board (2) soak attached binding agent (4), place between bottom plate (1) and the sheet surface layer (3), be tiled on the hot press work top, 8～the 16Mpa that exerts pressure, be warmed up to 80～140 ℃ after, pressing 5～20 minutes, be cooled to environment temperature, make.