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Silicone Rubber Rtv Silicone Rubber For Concrete Mould Silicone Rubber Rtv For Mould Making

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Min. Order / Reference FOB Price
1 Kilograms	US $5.50/ Kilograms

Local Area:	Shenzhen, Guangdong, China
R&D Capacity:	OEM, ODM, Other
Payment Terms:	LC, T/T, D/P, Paypal, Western Union

Brand:	YJS
Model Number:	YJS-520 silicone rubber
Hardness:	20 Shore A
Mixing Ratio:	100:2

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Description
YJS-520isakindofroomtemperaturevulcanizedsiliconerubberincondensationtype.It’sgenerally
namedastwopartsiliconerubber,PartAisaflowableliquid,partBisthecuringagentorcatalyst.It’smainlyusedformoldmaking.

Application
YJS-520siliconerubberisusedformakingmoldsofgypsumdecoration,plasterornaments,
polyesterdecoration,unsaturatedresincrafts,polyresincrafts,polyurethane,bronze,wax,candle,andsimilarproducts.TechnicalParameters
Typicalgeneralcharacteristics
InspectionMethod
Value
Productdata(CatalyzedA+B)
YJS-520
YJS-525
Hardness
ShoreA
20±2
25±2
MixRatio
A:B
100:3
100:3
Color
/
White
White
Potlife
25°C(77F)
30-40mins
30-40mins
Curingtime
25°C(77F)
3-4hours
3-4hours
Mixedviscosity
mPa.s
16000±1000
20000±1000
Tear-strength
kg/cm
20±2
22±2
Tensile-strength
M.pa
3.6±0.5
4.0±0.5
Elongation
%
400±50
450±50
Shrinkage
%
≤0.3
≤0.3
Characteristics
Anexceptionalfluidityandgoodoperability,easytodemold
Akindofsoftsilicone
Goodtensilestrengthandtearstrength
Cureatroomtemperature
Goodflexibility
Outstandingbubblereleasing
Goodduplicationtimes

Operationinstructions
Step1:preparetheoriginalmolds
Makesureyouroriginalmoldsperfect.fixitonaboard.Andfixtheoriginalmoldonaboard,thenusedfourpieceofboardtoenclosetheoriginalmolds.

Step2:Take100GpartsAandadd3GpartsBandmixthemevenly.
Notes:Moldmakingsiliconrubberisakindofflowingliquid,itcontainstwoparts.PartAisakindofflowingwhiteliquidandpartBisthecuringagentorcatalyst.Plsfollowthestepstrictly:
1.Weighthetwopartexactlybyelectronicweight..
Ifnot,forexampleaddtwomuchcatalyst,theoperationtimewillbetoofasttooperate,whichwillcauseinconveniencetooperate.
2.MixpartAandpartBevenly.
Otherwisethesiliconrubberwillbepartlysolidifiedandthiswillgivebirthtodifficultiesinyourfinaloperation.What’smore,thefinishedmoldswillmeetashortlife.Allofthesewillcauseawasteofsiliconrubber.

Step3:Vacuumpumping
Withoutexception,thissteptakeslessthan10minutes.Otherwise,itwillcausecrosslinkingreaction,andnomorefurtherstepswillbeavailable.

Step4:PouringcastingorBrushoperation
Notes:1.Forsimplepatternproductswesuggestusepouringoperationway,whichwillbeveryeasytooperateanddemould.Pourablesiliconerequirelightviscositywhichwillbeeasytoflowsmoothlyandeasytode-air.
2.Fordelicatepatternproductswesuggestusebrushingoperationway,whichcancopythepatternexactly.Brushablesiliconerequirehighviscositywhichwon’tbeeasytoflowawayandeasytobrush. 3.Wesuggesttosetthesiliconemoldforanother12hoursafterdemouldbeforeputintolargeproduction.

Package
25KG/drumvacuumpackingforpartA+1kg/bottlecatalystforpartB
200KG/drumpackingforpartA+1kg/bottlecatalystforpartB

Shelf life
Twelve(12) months when stored under dry and cool place by original package under 25℃Product Catalog Condensation Cure Silicone Rubberplatinum cure silicone rubberfood grade silicone rubbermedical grade silicone rubberpad printing silicone rubbersilicone rubber for insolesCompany Information
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