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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: BETTERLY
  • Model Number: BQ-Q7906
  • Appearance: Semitransparency
  • ViscosityPa.s*2(30℃): 4000
  • Operation time min(25℃): 18
  • Curing time min(25℃): 30
  • Hardener content: 2.5
  • Hardness Shore A: 25
  • Gravity (25℃) g/cm3: 1.2
  • Tensile strength(MPa): 4
  • Elongation(%): 500
  • Tear stength: 24

Packaging & Delivery

Packaging Details 20kg/barrel
Delivery Time Shipped in 3 days after payment

 RTV silicone rubber component/RTV liquid silicone rubber/LSR raw material

Product Description

  

Characters of mold silicone rubber

RTV mold silicone compound
Excellent fluid property
Mold release property
Weather resistance
Simple operation
Vulcanizing time and operation time adjustable
Deeper vulcanizing available
Stable mould dimension
Thermal resistance
Chemical resistance
Good physical property, high tear streangth
It is specially suitable for products made from unsaturated polyester,

good durability and long processing life of the mould.

 

Applications of mold silicone rubber 

The soft mold made of RTV silicone rubber mainly use for products which are made from unsaturated polyester,epoxy,
polyurethane resin, gypsum and paraffin as below,
1. Crafts
2. Furniture part and assembly
3.Lighting parts
4.Other decorating products
It can be also used in fields as below,
1. Leather printing
2. Transfer printing rubber head
3.Other elastic products

 

Typical properties of mold silicone rubber 

 

Properties BQ-Q7906
Appearance Semitransparency
ViscosityPa.s*2(30℃) 4000
Operation time min(25℃) 10
Curing time min(25℃) 30
Hardener content 2.5
Hardness Shore A 25
Gravity (25℃) g/cm3 1.2
Tensile strength(MPa) 4

 

Company Information

 We are a professional manufacturer and supplier of RTV & HTV silicone rubber, silicone coatings& inks& Print,silicone sealant and oil such as polydimethylsiloxane trimethylsiloxy terminated,  chemical additives, such as platinum catalyst Divinyltetramethyldisilazanemolding silicone rubber, mold duplicating rubber for resin craft makers, special silicon for manual molding, shoe mold rubber, pad printing silicone, encapsulants and potting compound,addition cure liquid silicone,baby  nipple silicone rubber ,lifecasting,food grade silicone rubber, trademark silicone rubber, HTV silicone rubber, lead-zinc alloy crafts silicone rubber, hot stamping silicone plate, hot stamping silicone roller, gross rubber, RTV-2 silicone rubber, silicone molds, silicone products,etc

 

 Operation:

Operation way of making silicone mold for soap products:
(there is two opearation way: pouring and brusing. Today i am sharing the pouring with you. For the brushing way, i will share with you later)
1.Prepare all the tool for making silicone mold: plaster products, board, silicone rubber, release agent(Vaseline, soap water, detergent, liquid paraffin). then polish and smooth the plaster products,clean the surface and dry it for if you do not do that,the silicone mold will be striate and unsmooth.when you finished it, fixing the plaster products in a smooth board and circling it with 4 pieces of board to make a frame square. Then we need to brush the release agent on the plaster products and board to make it easy to demould.

 
2. Weight Part A and Part B in Electronic scale according to the mixing ration. The mixing ration of the condesation cure silicone rubber is 100:2 and the mixing ration of the addition cure silicone rubber is 1:1 or 10:1. It must be accurate for if it's wrong, it will cause the problem of uncure. For example: For condesation cure silicone rubber, we take 100g part A, then we need to take 4g part B to mix it. For addition cure silicone rubber, we take 100g part A, we need to take 10g or 100g part B to mix it, which depends on the mixing ration is 1:1 or 10:1.
 
3.Mix part A and part B evenly. If no, the silicone mold will be partly solidified. what's more, it will affect the duplication times, even causing the waste of silicone rubber, which means that we need to take the new material to do the silicone mold again.
 
4.Vacuum pumping. To make the silicone mold perfect, we need to use vacuum machine to release the air bubbles. we put the mixtuer into vacuum machine when we mix it evenly for 3-5mins. If the time is too long, it will cause cross linking reaction,which means the silicone cured in the vacuum machine and we need to take the new material to do the silicone mold again.
(PS: if we do not have vacuum machine, there is two way to relese the bubble. First, we can extend the operating time of the silicone rubber, letting it contact the air. it will be better. Second, for the condensation cure silicone rubber, we can reduce the mixing ratio of catalyst from 4% to 2-3%, then the reaction of mixture( part a and part b) will be slower and the bubble will be exhausted by itself.
 
 

5.Pouring. when finished the step 4, then we pouring the silicone rubber into the fram square from a corner, flowing it smoothly.

 

6.Demoulding. If the operate time is 30-40 mins, then the curing time will be 4-5hrs under 25 degree. Usually the cure time is the 6 times of the operate time. so after 4-5 hrs later,we can demould the silicone mold. but we suggest that it will be better to use it after 24 hrs.(ps: if we want the silicone mold looks beautiful, we can use the scissors to trim it). 

 

7. Pouring the material of your products, like plaster, concrete or resin. when it cured, the products are finished.
 Questions & Answers

Question:How many kgs of silicone i need to make a mold, like 1m*1m?

Answers: First, you change the "m" to "cm" . then the V(volume)=100cm(length)*100cm(width)*1.5cm(height or thickness) =15000cm3

→ the density of the liquid silicone is 1.1g/cm3→ the quantity= 15000cm3
1.1g/cm3=16500g(16.5kg) 

Question: How can i know the thickness of the silicone mold?

Answers: For the pouring way, if you do not have a plaster have a base to keep its shape(like square),then we usually suggest that  2-3cm is enough. If yes, then 1-1.5 cm enough.

Question:  Why is there not enough 25kgs silicone in the drum? 

Answers: V=m/p. because the different of the silicone viscosity, so there will be a little diffenrence. when the viscosity is lower, there will be 26kgs or more. In contrast, there will be 24kgs or little.

What you can get

 

1. Quality silicone similar to Dow Corning and Smooth-on but at a competitive price ( 4USD/KG-7USD/KG).

2. Free Sample for testing if you doubt about the quality.

3. Free technical support with professional R&D department in the silicone business for 17 years.

Our Services

 1:  Reach the international standard high quality with competitive price !

2:  Passed the certificates including the  FDA, RoHS, MSDS, SGS,ISO9001:2008 !

3:  Online and on-site follow-up service for product demonstration !

4:  Free technical training on products usage and operation instructions !

5:  Free customer service to solve technical issues !

6:  Free mold opening technologies !

7:  Any of our products with quality problems will be replaced within 3 months after purchase !

 

 

 

For more information about silicon, pls feel free to contact with

Contact us

 

Dongguan City Betterly New Materials Co., Ltd.

Contact me:  Doris

Skype:btlxcl

Mob/whatsapp: +86 13686608942

TradeManager: cn1514635537ooyx

Website:www.btlchemical.com

Address: One cross road,Zhangpeng village,Machong town, Dongguan city, Guangdong province china 

 

 

24 hrs online

TradeManager: cn1514635537ooyx

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