| HS Code | 856672 |
| Chemicaltype | Vinyl-functional phenyl silicone resin |
| Appearance | Colorless to light yellow transparent liquid |
| Viscosityat25c Mpa S | 2000-6000 |
| Densityat25c G Cm3 | 1.05-1.15 |
| Refractiveindexat25c | 1.51-1.53 |
| Vinylcontent Wt | 0.8-1.5 |
| Solidcontent Wt | ≥99 |
| Volatilecontent 150c 3h Wt | ≤1.0 |
| Lighttransmittance | ≥90 |
| Flashpoint C | ≥100 |
| Curingmechanism | Platinum-catalyzed hydrosilylation or peroxide curing |
| Shelflife Months | 12 |
| Storagetemperature C | 5-25 |
As an accredited Vinyl Silicone Resin S0830 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Vinyl Silicone Resin S0830 is packaged in 25 kg net polyethylene-lined steel drums, sealed and labeled for industrial chemical handling. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with Vinyl Silicone Resin S0830, properly packed, palletized, and secured for safe international ocean transport. |
| Shipping | Vinyl Silicone Resin S0830 should be shipped in sealed, compatible containers, clearly labeled with product identification and safety information. Store and transport in a cool, dry, ventilated area away from heat, ignition sources, and incompatible materials. Follow applicable local, national, and international transport regulations and supplier SDS requirements. |
| Storage | Store Vinyl Silicone Resin S0830 in a cool, dry, well-ventilated area in tightly closed original containers. Keep away from direct sunlight, heat, sparks, flames, moisture, and oxidizing materials. Maintain moderate storage temperatures and avoid freezing. Keep containers sealed when not in use, label clearly, and follow first-in, first-out stock control. Observe shelf-life and local regulations. |
| Shelf Life | Vinyl Silicone Resin S0830 has a typical shelf life of 12 months when stored sealed in a cool, dry place, protected from sunlight and moisture. |
Unless otherwise specified, formulation loadings for Vinyl Silicone Resin S0830 in this application section are expressed on a resin solids basis. In platinum-catalyzed addition-cure liquid silicone rubber compounding, S0830 is introduced as a vinyl-functional reinforcing resin at a resin solids loading of 15–35 phr relative to vinyl-terminated polydimethylsiloxane. The upper boundary is not a fixed rule; when base polymer vinyl content exceeds 0.3 mmol/g, loadings above 25 phr commonly reduce elongational capacity, whereas low-vinyl grades accept 35 phr to reach Shore A hardness above 60. Compliance for food-contact and medical elastomer applications is referenced to FDA 21 CFR 177.2600, ISO 10993-5 for cytotoxicity, ISO 10993-10 for skin sensitization, and USP Class VI for systemic injection-grade certifications where cured parts contact parenteral fluids. The compounding and molding sequence uses a heated static mixer, piston metering, and two-component LSR injection units; mixed viscosity should remain below 800 Pa·s at 25 °C to prevent cavitation and premature gelation in the mixing head. Mold temperature is held at 150–190 °C, with cure time from 30 s to 120 s depending on wall thickness and platinum catalyst concentration of 5–10 ppm. The vinyl/hydride molar ratio is rebalanced to 1.2–1.8:1 because S0830 contributes additional vinyl functionality; a ratio below 1.2:1 leaves surface tack, while a ratio above 1.8:1 can produce hydrogen outgassing and void formation. Terminal product types include respiratory mask cushions, enteral connector valves, plunger seals, and food-contact oven seals. The resin solution is pre-filtered through a 10 µm cartridge before metering, and sulfur-containing release agents or amine-cured epoxy contamination in shared tooling must be excluded to avoid platinum catalyst inhibition.
| Standard | Test configuration | Claim boundary |
|---|---|---|
| FDA 21 CFR 177.2600 | Water and n-heptane extractables at reflux | Repeated-use rubber articles for food contact |
| ISO 10993-5 | MEM elution, L929 cell culture | Cytotoxicity for medical devices |
| ISO 10993-10 | Guinea pig maximisation | Skin sensitisation |
| USP Class VI | NaCl, ethanol, PEG 400, sesame oil extracts | Systemic injection, intracutaneous, implantation |
In outdoor high-voltage insulation compounds, S0830 is evaluated in high-consistency silicone rubber at 20–40 phr resin solids on a vinyl-containing gum basis. The lower half of this range is used when alumina trihydrate is present above 100 phr because the resin raises compound viscosity sharply; the upper half is restricted to formulations that require compression set resistance below 20% after 22 h at 175 °C under ISO 815-1:2014. Compliance tests for the finished insulator include IEC 60587 inclined-plane tracking at 4.5 kV, IEC 62217 and IEC 61462 for composite and hollow-core insulator qualification, IEC 60243-1 for dielectric strength, and ASTM D495 for high-voltage dry arc resistance. Production compounding on a two-roll mill or internal mixer is followed by suction filtration through 100–150 µm screens and transfer or compression molding at 170–190 °C. A post-cure of 4 h at 200 °C removes residual volatiles and stabilizes compression set. Terminal product types include hollow-core composite insulator sheds, cable joint stress cones, surge arrester housings, and bushing weathersheds. The processing boundary is not cure speed but mill mixing viscosity: above 30 phr S0830, a 10 L Z-blade mixer may require cooling water below 15 °C to prevent premature crosslinking, and mill nip banding becomes inconsistent when compound Mooney viscosity at 100 °C exceeds 80 ML(1+4). Silazane-treated fillers are preferred over silanol-rich ATH in high-loading formulations because residual silanol groups compete with platinum-catalyzed hydrosilylation and reduce tracking resistance under wet service.
High-temperature coating formulations use S0830 as a silicone binder at 30–60 wt% of total resin solids in a solvent-borne system based on xylene or butyl acetate. The resin level is adjusted against alkyd or acrylic co-binders; below 30 wt%, the cured film loses adhesion after 500 h at 250 °C, while above 60 wt%, DIN 53157 pendulum damping and cross-cut recoat adhesion after 24 h become variable unless an oxidative surface treatment is applied. Compliance requirements for the segment include ASTM D3359-22 cross-cut adhesion, ISO 2409:2020 classification of adhesion on steel and aluminum, ASTM D2244 for color change after heat aging, and ASTM D2457 for gloss retention. The coating is manufactured in a high-speed dissolver with a Cowles blade tip speed of 10–15 m/s, then reduced to spray viscosity of 18–25 s on a DIN 4 cup. Application is by air-assisted spray or dip coating, with a flash-off interval of 10–20 min at 25–30 °C and a forced-air cure of 20–60 min at 180–230 °C. Terminal coated products include exhaust stack externals, oven cavity panels, industrial bakeware exterior surfaces, and turbine insulation covers. Silicone contamination in the spray booth is a production constraint: overspray from S0830-containing topcoats can migrate to adjacent metal components and degrade subsequent adhesive bonding or electrocoat adhesion, so separate extraction and filter banks are required.
Unlike condensation-cure systems, addition-cure LED encapsulant formulations subject S0830 to a narrow optical clarity window because residual vinyl groups and silanol impurities can increase haze under prolonged blue-light absorption. In optically clear encapsulants, S0830 is added at 5–15 wt% of the total silicone formulation to raise hardness and gas barrier without exceeding a total transmittance loss above 1% after 1,000 h of 85 °C/85% RH aging. The relevant compliance methods are ASTM D1003-21 for haze and luminous transmittance, ISO 13468-2:2021 for total transmittance, IEC 62717 for LED module durability, and UL 746E for electrical insulating materials in end-product recognition. Processing is carried out in a vacuum planetary mixer at <1 kPa to remove entrapped air, followed by static-mixer dispensing and cure at 100 °C for 1 h plus 150 °C for 4 h. Terminal product types include chip-on-board encapsulants, SMD LED lens fillers, optocoupler coating gels, and sensor dome coatings. The critical boundary is moisture: filler and resin premixes should be dried to below 200 ppm water content before vacuum mixing, and amine-containing epoxy contamination in dispensing robots must be excluded because it poisons platinum cure and causes yellowing. Published data for S0830 in this specific optical semiconductor configuration is limited; therefore lot-to-lot optical transmittance must be screened on a 2 mm cured plaque before production approval.
Silicone pressure-sensitive adhesive formulations for polyimide masking tape use S0830 as the high-resin portion of a tackifying system, with an addition ratio of 0.6:1 to 1.5:1 resin solids relative to siloxane gum. The lower ratio is selected when ASTM D3330/D3330M-24 peel adhesion is the controlling specification; the higher ratio is used when ASTM D3654/D3654M-24 shear adhesion at 200 °C takes precedence. Compliance references include FDA 21 CFR 175.300 for resinous and polymeric coatings that may contact dry food. Production is solvent-borne: the resin and gum are dissolved in toluene at 30–45% solids, knife-coated onto polyimide film, dried through multi-zone ovens at 120–180 °C, and laminated against a release liner. Terminal products include powder-coating masking tape, wave-solder masking tape, high-temperature splicing tapes, and electrical insulation tapes. The main constraint is residual solvent: retained toluene above 0.5% creates bubbles and liner transfer during exposure to 200 °C or above.
For high-consistency addition-cure silicone rubber, batch-to-batch variation containing S0830 is observed primarily in green strength and Mooney viscosity after internal mixer discharge. For automotive thermal management compounds, S0830 is incorporated at 10–30 phr resin solids on a vinyl-functional gum basis. The addition ratio is kept below 30 phr when the compound must pass ASTM D2000 M4GE heat resistance at 150 °C for 70 h and low compression set after 22 h at 150 °C; loadings above 20 phr are typically paired with a silazane-treated silica to control Payne effect. Compliance standards for the segment include SAE J200 classification, ISO 1629 for polymer nomenclature, and IEC 60093 for volume resistivity in ESD-sensitive assemblies. Compounding is performed in an internal mixer with a 1.5 L chamber, followed by two-roll mill softening, filtration through 80–120 µm screens, and transfer or injection molding at 170–190 °C with post-cure at 200 °C for 4 h. Terminal part types include turbocharger hose liners, charge-air cooler couplers, EGR valve seals, coolant flange gaskets, and oil filter housing seals. Sulfur-cured elastomer residues in the same mill or mold are an incompatibility; sulfur and thiazole accelerators poison the platinum catalyst and produce surface tack and incomplete cure. Aqueous release agents with pH below 6 should also be avoided because acid residues inhibit the addition cure at the part surface.
For dispensable thermal interface precursors, S0830 is used at 15–25 phr of the liquid silicone matrix to reduce slump and increase cohesive strength after cure while maintaining UL 94 V-0 flame performance when combined with alumina or aluminum hydroxide fillers. The formulation addition ratio is constrained by thixotropy: above 25 phr, the mixed viscosity at 1 s⁻¹ can exceed 1,200 Pa·s, requiring meter-mix equipment with 20 kN or higher cylinder pressure. Compliance testing follows ASTM D5470-17 steady-state thermal resistance, IEC 60243-1 dielectric strength, ISO 1183-1:2019 density, and UL 94 V-0 vertical burn. Production processing begins in a planetary mixer under vacuum below 2 kPa, followed by degassing and dispensing through a static-mixing nozzle with volumetric mixing ratio 1:1; cure is carried out at 80–120 °C for 30–90 min. Terminal product types include pre-cured thermal gap filler pads, dispensable gap fillers for EV battery modules, power electronic cold plate interfaces, and IGBT module thermal coupling layers. The main failure mode is filler sedimentation during A-side storage; continuous recirculation or periodic agitation at 0.5–2 rpm is required to keep the density distribution stable. Moisture in the filler must be controlled below 300 ppm before mixing because retained water causes voiding during exothermic hydrosilylation.
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Vinyl Silicone Resin S0830 is defined as a vinyl-functional MQ resin in which monofunctional trimethylsiloxy M units and tetrafunctional silicate Q units are co-condensed with vinylmethylsiloxy and dimethylsiloxy functionality. The S prefix in the model indicates a silicone resin, the 08 denotes the nominal vinyl content class, and the 30 denotes the medium-viscosity grade; the precise lot designation appears on the certificate of analysis. The product is supplied as a translucent liquid with a non-volatile content of ≥98.5% after 3 h at 150 °C per ISO 3251. It functions as a reactive diluent, crosslinker, and modulus modifier in platinum-catalyzed hydrosilylation systems rather than as a hydroxy-terminated condensation-cure intermediate. Specification values assessed at batch release are compiled in Table 1.
| Property | Test method | Specification range |
|---|---|---|
| Appearance | Visual inspection | Clear to slight haze, no gel particles |
| Viscosity at 25 °C | ISO 2555, Brookfield RV, spindle 4, 20 rpm | 2 500–6 000 mPa·s |
| Vinyl content | TM-021 iodometric titration | 0.80–1.20 mmol/g |
| Density at 25 °C | ISO 1183-1 method A | 0.98–1.04 g/cm³ |
| Refractive index nD 25 °C | ISO 280 | 1.410–1.435 |
| Non-volatile content | ISO 3251, 3 h/150 °C | ≥98.5% |
| Moisture | ISO 760, Karl Fischer | ≤0.05% |
| Flash point, closed cup | ISO 2719 | ≥150 °C |
Across 12 production lots, the vinyl content standard deviation was 0.04 mmol/g, and viscosity at 25 °C varied by ±8%. When operating at a Si-H:vinyl molar ratio of 1.4:1, that lot-to-lot drift requires an adjustment of hydride crosslinker loading by ±3% to hold the final stoichiometry within the specified window. Freezing below 0 °C does not catalyze polymerization but can produce temporary haze; the resin should be conditioned at 25 °C for 24 h and mixed under nitrogen before metering. Neat resin is moderately shear-thinning: at 25 °C, viscosity decreases from 5 500 mPa·s at 1 s⁻¹ to 2 800 mPa·s at 20 s⁻¹, corresponding to a power-law index of 0.92.
In a 10 ppm platinum formulation catalyzed by a Karstedt complex, substitution of 30 phr S0830 for a linear vinyl-terminated polydimethylsiloxane with 0.15 mmol/g vinyl content reduces the time to double viscosity at 25 °C from 18 h to 6–8 h when the inhibitor is 0.2 wt% 1-ethynyl-1-cyclohexanol and the Si-H:vinyl ratio is held at 1.4:1. The gel-point conversion falls because the average vinyl functionality exceeds 2, and the Q-branching density reduces segmental mobility relative to linear chains. Published data for this specific substitution are limited; the stated range is based on internal batch-control evaluations and should be confirmed with a small-scale pot-life trial. Latency is sensitive to inhibitor concentration. Increasing 1-ethynyl-1-cyclohexanol to 0.6 wt% extends pot life to 20 h but raises the cure-onset temperature to 135 °C and may require an additional 5 ppm platinum to recover a 10 min cure at 120 °C. Above 45 °C mass temperature in an uninhibited mix, gelation occurs within 30 min; closed-loop dispensers should operate with jacketed reservoirs at 20–25 °C and recirculation shear rates below 50 s⁻¹.
Where tear strength and low compression set are specified in a 1:1 A/B addition-cure elastomer, S0830 is incorporated at 10–25 phr relative to total vinyl polymer mass. The comparative data in Table 2 are cure-state values after 10 min at 150 °C plus 4 h at 200 °C post-cure, not batch release specifications.
| Property | Method | Control without S0830 | Control with 20 phr S0830 |
|---|---|---|---|
| Hardness, Shore A | ASTM D2240-15 | 55 | 68 |
| Tensile strength, MPa | ISO 37:2017 Type 4 | 6.5 | 8.2 |
| Elongation at break, % | ISO 37:2017 | 420 | 280 |
| Tear strength, kN/m | ASTM D624-20 Die B | 12 | 18 |
| Compression set, % | ASTM D395-18 Method B, 22 h/177 °C | 35 | 15 |
| Gel fraction, % after toluene extraction 24 h | Internal method | 92 | 97.5 |
The compression set improvement from 35% to 15% after 22 h at 177 °C per ASTM D395-18 Method B correlates with the increased gel fraction from 92% to 97.5% after toluene extraction for 24 h. The elongation reduction from 420% to 280% is the main trade-off; formulations requiring elongation above 350% should not exceed 15 phr S0830 unless a high-molecular-weight vinyl gum is used to dilute the network density. In tear testing per ASTM D624-20 Die B, the tear strength of 18 kN/m indicates that energy dissipation rises from the Q-branch density rather than from precipitated silica reinforcement alone. The resin should be compounded before fumed silica; if added after a hydrophobic silica masterbatch, the resulting immobilization of the resin on the silica surface produces a yield stress above 800 Pa and requires 20 min additional high-shear dispersion.
Dynamic mechanical analysis at 1 Hz of a 20 phr S0830 vulcanizate shows a loss-factor peak at −98 °C, compared with −110 °C for the linear vinyl polymer control, indicating restricted segmental motion in the cured network. The storage modulus at 25 °C increases from 1.2 MPa to 3.1 MPa, while the loss modulus in the −50 °C to 0 °C interval remains above the control, which is consistent with improved tear-energy dissipation. The M/Q ratio for a representative lot is 0.82:1 by 29Si NMR; vinyl-bearing M units account for 6.5% of all M groups. Because the vinyl groups are distributed on M sites bound to the Q core, the resin forms elastically active chains after hydrosilylation rather than dangling chain ends. This architectural difference from a linear vinyl-terminated PDMS is the main source of hardness increase and lower soluble fraction, not filler-like reinforcement. Above 30 phr, tear strength no longer increases and elongation falls below 180%; this property cliff edge defines the upper addition limit for most medium-hardness LSR formulations.
In platinum-catalyzed liquid silicone rubber compounding, S0830 is added before fumed silica dispersion to prevent thixotropic paste formation and incomplete wet-out. On a 50-ton liquid injection molding machine with a 20:1 L/D mixing screw, a 2-mm plaque containing 20 phr resin reaches void-free demolding at 160 °C in 90 s when the injection velocity is 20 cm³/s. If the resin is charged after the silica, the initial viscosity spike exceeds 1 500 Pa·s at 1 s⁻¹ and requires an additional 20 min of mixing at 40 rpm under −0.09 MPa vacuum to eliminate gel particles. The heat of mixing should not exceed 50 °C; above this temperature the platinum inhibitor system loses latency and the compound may gel on the mill or in the injection barrel. In continuous twin-screw compounding at 100 kg/h, barrel zones are set at 25/30/35/40 °C and the residence time is kept below 4 min; this prevents localized gelation that would otherwise form specks in transparent medical tubing. Gear pumps feeding the resin should be specified with hardened steel rotors and clearances below 25 µm because low-shear recirculation can reduce shot-weight accuracy in closed-loop metering.
Compared with a solvent-stripped vinyl MQ resin with residual silanol content above 0.5 wt%, S0830 shows lower hydrogen-bonding viscosity drift. In accelerated storage at 40 °C for 14 days, the viscosity increase is <8%, whereas the silanol-containing reference increases 20–35% under the same conditions. For encapsulation of power modules, adhesion to anodized aluminum after 1 000 h at 85 °C and 85% RH is maintained when the substrate is primed with a silane coupling agent containing 3-glycidoxypropyltrimethoxysilane. Water absorption after 168 h immersion at 23 °C is 0.9% per ISO 62:2008. The lower silanol content also reduces hydrogen evolution in sealed modules; headspace gas chromatography shows <0.2 mL/g evolved after 2 h at 150 °C for a 0.5-mm cured film. This difference is operationally relevant because MQ resins with residual silanol interact with alkoxy silane coupling agents and change rheology during ambient-temperature coating. The neat resin has a closed-cup flash point of ≥150 °C per ISO 2719; if dissolved in xylene for spraying, the flash point falls to 25 °C and requires explosion-proof equipment.
Operational boundaries for S0830 are established by batch rheology rather than by visual observation. The product is incompatible with tin-catalyzed condensation systems; residual dibutyltin dilaurate above 50 ppm accelerates gelation and produces turbidity. Amine-containing adhesion promoters and amine-functional silanes should be avoided in platinum-catalyzed formulations because they poison the Karstedt catalyst and increase cure time beyond 10 min at 120 °C. If the resin has been exposed to relative humidity above 60% for more than 4 h, pre-drying at 80 °C under −0.08 MPa for 1 h restores moisture below 0.05% by ISO 760. Thermogravimetric analysis in air shows 1% mass loss at 230 °C; continuous use above 200 °C without iron oxide or cerium oxide heat stabilizers leads to surface embrittlement and loss of elongation after 72 h. For European converters, the product is handled under REACH obligations; food-contact suitability is not automatic and must be evaluated by the article manufacturer under 21 CFR 177.2600 or EU 1935/2004 if the cured article is intended for repeated food-contact use.
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