cellulose based acoustic panels.pptx

8/18/2019 Cellulose Based Acoustic Panels.pptx

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ew Materials in Construction Acoustic Materials : Cellulose

MBEM 2014-1!rou" 1

Acoustic Material

CelluloseAmit MozaGroup 1


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What is

Cellulose

A natural polymer primarily produced by

plants

Main component of plant cell walls : 33%of plant matter

A polysaccharide-Long chain of linkedsugar molecules

asic building block for te!tile and paper

Cotton is the purest natural form ofcellulose


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Chemical Composition

"ormula:

#C$&'()*n

+ensity: &,)'

gcm.

The length of the chain varies from a fewhundred sugar units in wood pulp to over6000 for cotton


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C#aracteristics

• /asteless

• (dorless

• 0nsoluble in water

• iodegradable

• Can be broken down chemically into it1s

glucose units by treating it withconcentrated acids at high temperatures

2canning electron micrograph of wood cellulose


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Acoustic Pro"erties o$Cellulose•

oise reduction is achie4ed in two ways• /he 5rst is that cellulose completely 5lls ca4ities lea4ing few airpockets for sound to tra4el in,

• /he second is the cellulose materials ability to trap air

Cellulose is approximately threetimes denser than berglass. Thishelps deaden the sound through

walls and between oor levels


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• Cellulose insulation installation

is typically a two-personoperation – one person to feed the insulation

material into a blowing machine

– the other directs the hose to wherethe cellulose is re6uired,

• /he air to 5ber ratio can bead7usted to ensure completeco4erage,

• Moisture-added installations aretypically utili8ed for newconstruction

• /he insulation is sprayedthrough the hose9 a smallamount of water is added tohelp adhesion,

• /he ca4ity is 5lled until the

material actually e!tendsbeyond the face of the studs or

Loose CelluloseApplication


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Cellulose %ase& Acoustic

Panels• Cellulose based materialwith $)-;)% recycledcontent,

• sed for acoustical as wellas thermal insulation,

MaterialPercenta'e

Cellulose 0nsulation $'% - ?'%

@/ &'% - 3'%


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+eatures

• Controls = +eadens 2ound•


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@hysical @roperty +ata

Pro"ert8 3estMet#o&

9alue

2urface burningCharacteristic

A2/M -EF9>L ;B3

&* "lame 2pread: &),B* 2moke +e4eloped:GF)' #Class A*,

Critical


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coustical @erformance

3#icness NC

JK ',)

&K ',E

BK &,'

0ncreased sound absorption tocontrol = deaden sound

Achie4es higher oise


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A&anta'es • 2ound 0nsulation – @ro4ides mass =

damping –

cellulose based acoustic panels.pptx

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