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Mold Making Silicone Rubber
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Product Description
Description
Mold Making Silicone rubber is a two-component silicone room temperature mold rubber (Room Temperature Vulcanization), referred to as RTV, commonly known as Silicone. This is a two-component compound. The A component contains a cross-linking agent, and the B component contains a catalyst. During the packaging process, the cross-linking agent and the catalyst must be separated. Its vulcanization is carried out at room temperature. As long as the two components are mixed in a certain ratio (the specific ratio can be determined according to the operating time and product performance), the two-component compound will undergo a cross-linking reaction to form a flexible and elastic colloid.
Applicable to POLYSTER epoxy resin (EPOXY), Pu foam resin, gypsum, cement, candles, electronics and other craft factories, toy factories, electronics factories, lighting factories, silk screen factories, candle factories, production of decorative handicrafts and Copy products and make molds.
Features
1. It has the characteristics of no deformation, high temperature resistance, acid and alkali resistance, and no expansion.
2. Good shrinkage rate, many times of re-molding, mold silicone shrinkage rate is 2/‰。
3. Good tension, elasticity, and good tearing, not only make your products beautiful, but also make your products not deformed. There is no problem with high temperature resistance at 200 degrees, and the silicone mold of minus -50 degrees is still not brittle and still It is soft and the simulation effect is very good.
Application
1.Plaster products mold making
2.Gypsum products mold making
3.GRC products mold making
4.Resin products mold making
5.PU products mold making
6.Concrete products mold making
7.Wax molding
8.Stone/artificial stone mold making
9.Epoxy products mold making
10.All kinds of crafts/decorations mold making
11.Candle mold making
12.Fiberglass mold making
13.Cake/chocolate/candy/cookies/butter mold making
14.Tiremold making
15.Dental mold making
16.Soap mold making
17.Prototype mold making
18.Jewelry
19.Human parts mold making (hands, arms, legs, fingers, other organs)
20.Shoe mold making
Type
Mold silicone rubber can be divided into addition and condensation type.
A1: Room temperature vulcanization condensation molding silicone rubber, it has excellent fluidity, mold release, easy to operate, vulcanization time and operation time can be adjusted as needed, deep vulcanization, stable mold size, heat resistance, chemical resistance, and good physical properties , High tear strength, especially for unsaturated polyester products, good durability and long mold life.
B1: Addition molding silicone rubber, it has the characteristics of good transparency, easy deep curing and low shrinkage.
A2: Silicone rubber soft molds made of condensation mold glue are mainly used for mass production of handicrafts, furniture parts, lighting parts, and other decorative products made of unsaturated polyester, epoxy resin, polyurethane resin, gypsum and paraffin wax. . It can also be used for leather printing, transfer plastic heads and other elastic products.
B2: Addition molding silicone rubber is mainly used for the production of precision molds and exquisite replicas.
Parameters for Platinum Cure Molding Silicone or Addition Cure Molding Silicone
8 series of addition molding translucent mold silicone parameters (25℃)
|
Model
|
815
|
820
|
825
|
830
|
840
|
|
Color
|
translucent
|
||||
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Hardness (Shore A°)
|
15±2
|
20±2
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25±2
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30±2
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40±2
|
|
Two-component mixing weight ratio (A:B)
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1:1
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1:1
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1:1
|
1:1 or 10:1
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1:1 or 10:1
|
|
Dynamic viscosity（mPa.s）
|
3000±1000
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5000±2000
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6000±2000
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7000±2000
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8000±2000
|
|
Tensile strength（MPa)
|
4.7
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4.8
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5.7
|
7.0
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7.5
|
|
Tear strength（kN/m）
|
18±2
|
22±2
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24±2
|
18±2
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15±2
|
|
Elongation（%）
|
580
|
520
|
510
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550
|
385
|
|
Density （g/cm³）
|
1.05
|
1.05
|
1.07
|
1.13
|
1.14
|
|
Operating time （min)
|
20-40
|
20-40
|
20-40
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20-40
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20-40
|
|
Vulcanization time（h)
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3-5h（25℃）20-30min（60℃）
|
||||
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Linear shrinkage rate（%）
|
《0.1
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《0.1
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《0.1
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《0.1
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《0.1
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G series of addition molding high transparent mold silicone parameters (25℃)
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Model
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G815
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G820
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G825
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G830
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G840
|
|
Color
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high transparent
|
||||
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Hardness (Shore A°)
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15±2
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20±2
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25±2
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30±2
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40±2
|
|
Two-component mixing weight ratio (A:B)
|
1:1
|
1:1
|
1:1
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1:1 or 10:1
|
1:1 or 10:1
|
|
Dynamic viscosity（mPa.s）
|
9000±1000
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12000±2000
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14000±2000
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16000±2000
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45000±5000
|
|
Tensile strength（MPa)
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3.2
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3.2
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3.3
|
3.3
|
3.1
|
|
Tear strength（kN/m）
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8±2
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9±2
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8±2
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8±2
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7±2
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|
Elongation（%）
|
460
|
460
|
420
|
420
|
170
|
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Density（g/cm³）
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1.05
|
1.05
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1.07
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1.13
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1.14
|
|
Operating time （min)
|
20-40
|
20-40
|
20-40
|
20-40
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20-40
|
|
Vulcanization time（h)
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3-5h（25℃）20-30min（60℃）
|
||||
|
Linear shrinkage rate（%）
|
《0.1
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《0.1
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《0.1
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《0.1
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《0.1
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Packaging
Metal drum or plastic drum: 20kg, 25kg and 200kg
Parameters for Tin Cure Molding Silicone or Condensation Cure Molding Silicone
|
Model
|
915
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920
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925
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930
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935
|
940
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Color
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white/translucent
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|||||
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Hardness (Shore A°)
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15±2
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20±2
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25±2
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30±2
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33±2
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40±2
|
|
Adding ratio of curing agent(%)
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2-3
|
2-3
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2-3
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2-3
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2-3
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2-3
|
|
Dynamic viscosity（mPa.s）
|
13000±2000
|
17000±2000
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25000±2000
|
27000±2000
|
25000±2000
|
15000±2000
|
|
Tensile strength（MPa)
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3.2
|
4.0
|
4.2
|
4.5
|
4.0
|
3.5
|
|
Tear strength（kN/m）
|
16±2
|
19±2
|
24±2
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26±2
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25±2
|
21±2
|
|
Elongation（%）
|
420
|
530
|
480
|
480
|
450
|
250
|
|
Density （g/cm³）
|
1.08
|
1.08
|
1.08
|
1.08
|
1.09
|
1.09
|
|
Operating time(min)
|
30-50
|
30-50
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30-40
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20-40
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30-40
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30-50
|
|
Curing time（h)
|
4-5
|
4-5
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3-4
|
3-4
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3-4
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3-5
|
|
Linear shrinkage rate（%）
|
《0.3
|
《0.3
|
《0.3
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《0.3
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《0.3
|
《0.3
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Packaging
A Part Packing: 25KG/drum, 200KG/drum
B Part Packing: 1KG/bottle
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Silicone Type
|
Manual Molding Silicone
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Manual Molding Silicone
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Manual Molding Silicone
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Shoe Molding Silicone
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|
Model
|
430
|
440
|
470
|
420
|
|
Color
|
white
|
white
|
white
|
white
|
|
Hardness (Shore A°)
|
30±2
|
40±2
|
52±2
|
18±2
|
|
Adding ratio of curing agent（%)
|
2~3
|
2~3
|
2~3
|
2~3
|
|
Dynamic viscosity （mPa.s）
|
9000±2000
|
15000±2000
|
11000±2000
|
11000±2000
|
|
Tensile strength （MPa)
|
2.8
|
5
|
2.4
|
1.8
|
|
Tear strength（kN/m）
|
3±2
|
7±2
|
5±2
|
3±2
|
|
Elongation（%）
|
220
|
150
|
190
|
250
|
|
Density (g/cm³)
|
1.08
|
1.08
|
1.09
|
1.08
|
|
Operating time(min)
|
30-40
|
30-40
|
30-40
|
30-50
|
|
Vulcanization time(h)
|
3-5
|
3-5
|
3-5
|
3-5
|
Packaging:
Component A is 25KG/drum or 200KG/drum
Component B is 1KG/bottle
Silicone rubber mold making is a widespread practice in various industries, and it requires high-quality silicone rubber for optimal results. Two of the most popular types of silicone rubber for mold making are liquid silicone rubber and rtv silicone rubber for mold making.
Liquid silicone rubber, also known asLSR, is an ideal material for creating complex and detailed molds. It offers excellent flowability, making it easy to pour into intricate mold cavities and create precise replicas. The cured liquid silicone rubber molds exhibit excellent durability, flexibility, and resistance to high temperatures, ensuring long-lasting and reliable moldings.
rtv silicone rubber for mold making, or Room Temperature Vulcanizing silicone rubber, is another excellent choice for mold making. It cures at room temperature, eliminating the need for heat or pressure, and offers excellent reproduction capabilities. RTV silicone rubber molds are known for their tear resistance, compression set, and outstanding stability, making them suitable for a wide range of applications.
When it comes to silicone rubber mold making, selecting the right material is crucial for achieving desired results. Both liquid silicone rubber and RTV silicone rubber provide exceptional performance and are versatile, easy to use, and cost-effective. They are widely used in various industries, including automotive, medical, aerospace, and more.
whether you choose liquid silicone rubber for mold making or rtv silicone rubber for mold making needs, you can trust these high-quality silicone rubber options for exceptional results. With their outstanding properties and versatility, they are the ultimate solutions for silicone rubber mold making.
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