Silicon rubber for Gypsum

HY-638 Silicon Material for Gypsum Products

Usage:

For toy gifts and craftwork gift, products with complex fine details, and made in pouring way.

HY-638 Silicon Material for Gypsum Description:

HY-638 Silicon Material for Gypsum is mainly used for toy gifts

and craftwork gifts with the advantages of good tensile strength, high tear

strength, high temperature resistance, high duplication times and repeated use,

etc. It is suitable for small products or fine and precision products which is

difficult to demould. This plaster molding silicon is one of the products with

the highest use level in the production of craftwork gifts and the shrinkage is

up to 2‰.

HY-638 Silicon Material for Gypsum Applications: Poly technique, lightings, candles,

and  molds in multiple pieces for large products.\

HY-638 Silicon Material for Gypsum Datasheet:

Model	Appearance	Viscosity (cps)	Hardness (Ao)	Tensile Strength (Mpa)	Tear Strength (KN/m)	Elongation (%)	Mixing ratio(%)	Operating Time(H)	Curing Time(H)
638	White	≤38000	36±2	≥3.8	≥28	≥360	2~3	0.5~1	2~5

HY-638 Silicon Material for Gypsum General Description:

HY-638 Silicon Material for Gypsum are

general called two-component room temperature vulcanization silicone rubber with

excellent fluidity and good operational performance. Add curing agent of 2%-3%

at the room temperature, the plaster molding silicon is still operational within

30 minutes,and in 2-5 hours, an elastic silicon mold will be obtained with

resistance to deformation, high-temperature, acid and alkali and expansion. The

plaster molding silicon is mainly applicable to mold duplication of poly crafts,

resin craftworks, lightings, candles, etc. and fabrication of precision

molds.

Operation Instruction for HY-638 Silicon Material for Gypsum

The product is white or red flowing liquid with general hardness

of 34—38A°after curing . If the customer wants to make large products and large

size molds, the mold should be made of silicone rubber with high hardness. On

the contrary, if  the mold with fine and precision patterns , it should be made

of silicon with low hardness. The amount of the curing agent depends on the

actual requirements of the customer. If molds requiring fast drying and demould,

more curing agent is needed; contrarily, if molds requiring slower drying and

demould, less curing agent is needed.

(Note: our company does not recommend you to add silicone oil. If

a special soft silicon mold or fine detailed and complex patterns products are

required, 5%-10% silicone oil can be added to soften the mold for easy

demould.)

The proportions and reactions of the curing agent and the

HY-638 Silicon Material for Gypsum are listed as follows:

1. Adding curing agent 1%, the silicone can still be operated

within 2.5 hours and can be demoulded after 6-8 hours.

2. Adding curing agent 2%, the silicone can still be operated

within 50 minutes to 1 hour and can be demoulded after 2-3 hours.

3. Adding curing agent 3%, the silicone can still be

operated within 28 - 30 minutes and can be demoulded after 1.5-2 hours.

4. Adding curing agent 4%, the silicone can still be

operated within 10 - 15 minutes and can be demoulded after 1 -1.5 hours.

TDS of addition cure silicoen rubber:

Modle	Mix Ratio	Mix viscosity	pot life ( mins)	Cure time( hours at 25C)	Hardness	Shrinkage	Tensile Strength (MPa)	Tear-Strength((kN/m))	Elongation at Break (%)	Color
HYE610#	1：1 or 10:1	1500±2000	20-40	3-5	10±2	0.001	3.2	12±2	600-700	Translucent
HYE615#	1：1	6000±1000	20-40	3-5	15±2	0.001	4.2	12±2	470	Translucent
HYE620#	1：1	7000±2000	20-40	3-5	20±2	0.001	4.7	25±2	520	Translucent
HYE625#	1：1	8000±2000	20-40	3-5	25±2	0.001	5.2	25±2	470	Translucent
HYE630#	1：1	9000±2000	20-40	3-5	30±2	0.001	5.2	20±2	470	Translucent
HYE640#	1：1	20000±2000	10-40	6-8	40±2	0.001	5.6	22±2	400-500	Translucent
HYE650#	1：1	10000±2000	20-40	3-5	50±2	0.001	5.3	12±2	300	Translucent
HYT640#	1：1	40000±2000	10-60	cured by heating 30mins at 120℃	40±2	0.001	5-6	20±2	400-500	transparent
Q630	1:1	16000±2000	20-40mins	3-5H at 25℃ 20-30mins at 60℃	30±2	0.1%	3.3	8±2	420	transparent
Q640	1:1	45000±2000	20-40mins	24H at 25℃ 40-60mins at 60℃	40±2	0.1%	3.1	7±2	170	Highly Transparent

Any more details,welcome to contact Ms.Raemon for more information:

Name:Raemon Shi

Email:raemon(at)szrl.net

Tel:0086-18948315840

Skype:wendy.wen121

Wechat:18948315840

FaceBook: https://..........com/RaemonShi

Website:..........net

Company:ShenZhen HongYeJie Technology Co.,Ltd.