PDMS-based Hybrid Materials

P7 Thermosetting silicone resin material
The PDMS hybrid material, Yamamura's original material, is a thermosetting condensation
polymerization type silicone resin with an inorganic Si-O bond as its main backbone and no C-C bondin its structure, resulting in a high heat resistance temperature and no yellowing or cloudiness when
exposed to UV light or heat. Therefore, there is no decrease in transmittance or change incharacteristics. Furthermore, by using special raw materials, the volatilization of low-molecular-weightsiloxane, which has been a problem with conventional silicone-based materials, is reduced to a verysmall amount. We can also design custom compositions to meet your desired properties.

●FeaturesHigh UVTransmittanceCompared to conventional silicone-based resins, it achieves hightransmittance in the UV region. It also has excellent UV resistance and isresistant to changes such as yellowing.

Excellentheat resistanceHeat resistance temperature: Max 250°C (cleared 1000h)
Also clears general cycle tests (-55 ⇔ +125°C) for electronic components.

FlexibilityHigh flex resistance

Since it remains flexible even after curing, it can be used to bondmaterials with differing coefficients of thermal expansion. It can also beused as an elastic material due to its excellent bending resistance.

Adhesion

Hybrid materials bond to functional groups present on the surface of theadherend during curing, making it possible to bond to a wide variety ofmaterials. In addition, since the bonded surface interface is protected,
corrosion due to moisture is less likely to occur.

◆Generation of low molecular weight siloxane

PDMS-based hybrid materials (Yamamura)

In general silicone resin materials,
volatilization of low-molecular-weightsiloxane is an issue. Yamamura has reduced
the generation of low-molecular-weightsiloxane in hybrid materials to an extremely
low level (less than 10 ppm) by refining at
the raw material level.

silicone-based resins (other companies)

Contact Information
New Product Development Department
4207 Ikonobecho, Tsuzukiku, Yokohama, 224-0053 Japan
URL：https://www.yama-ph.co.jp/en/contact/ (Inquiry form)
This products information is subject to changed or updated without notice.

Apr. / 2023 Ver.1

PDMS-based Hybrid Materials

P7 Thermosetting silicone resin material
Yamamura Photonics has prepared representative part numbers with different characteristics. Pleaseconsider the product number that best suits your application.

《High Transmittance Type (visible light to UV-A)》■HE59NHE59N is a high transmittance resin material developed for UV-LEDs in the UV-A to 400 nm range. Inaddition to its high light resistance, HE59N has a high adhesive strength unique to hybrid materials,
and it adheres firmly to packages, etc., thus providing corrosion protection.
HE59NTransmittance(on silica glass)@300nm@400nm7.2
100:5
80℃×30min → 200℃3h0.8
350
89.2%
92.0%

HardnessshoreE52

Viscosity (Tuning fork type )Pa・s

Mixing ratio (Main : Cure agent)

Wt%

Curing conditions-Characteristics ofcured product

Elastic modulus

Mpa

Elongations％《High Transmittance Type (UV-B to UV-C)》■HE81F、HE84F、HE86F
HE81F, HE84F, and HE86F are resin materials developed to achieve high transmittancein the deep UV region and improved UV resistance. It can be used as an adhesive forlens materials and UV packages.
HE81F@280nm21100:580℃×30min → 200℃3h
0.8
350
92.0%
92.5%

shoreE52

Viscosity (Tuning fork type )Pa・s

Mixing ratio (Main : Cure agent)

Wt%

Curing conditions-Characteristics ofcured product

Elastic modulus

Mpa

Elongations％

Transmittance
Hardness@265nm

HE84F

HE86F

13.3
17.4
100:10100:10100℃×15min⇒250℃×3h
1.3
1.5
140
120
91.1%
90.2%
92.0%
91.2%
5965

《High Heat Resistance Type》■HP36UPN-1
HP36UPN-1 is a high heat-resistant resin material developed as a base material for functional sheets;
it has heat resistance of 200-250°C and can be used as a base resin for heat-dissipating sheets, etc.
by adding ceramic filler.
HP36UPN-1
Viscosity (Tuning fork type )Pa・sCuring conditions

Hardness

Characteristics ofcured productshoreE

Volume resistance
16×10 Ω/cm
(60 sec)
Dielectric constant

100Hz
1kHz

Dielectric strength kV/mm

7.1
80℃×30min → 200℃3h32500v: 2.32
1000v: 4.44
3.23
3.65
DC: ≧70kV
AC: ≧5kV

Contact Information
New Product Development Department
4207 Ikonobecho, Tsuzukiku, Yokohama, 224-0053 JapanURL：https://www.yama-ph.co.jp/en/contact/ (Inquiry form)
This products information is subject to changed or updated without notice.

Apr. / 2023 Ver.1