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IOTA LSR 3140 is a two-component, transparent addition-cure liquid silicone rubber with excellent vulcanization performance. It is widely used for coating and anti-slip applications on pure cotton, polyester-cotton, nylon, linen, wool, silk, anti-slip fabric, waterproof fabric, sealing fabric, high-temperature-resistant fabric, low-temperature-resistant fabric, insulating fabric, anti-corrosion fabric, outdoor premium tent fabric, premium umbrella fabric, anti-aging fabric, and other textiles. Product specifications: Component A viscosity 60,000±5,000 mPa·s and Component B viscosity 50,000±5,000 mPa·s at 25°C; specific gravity 1.08±0.02 g/cm³; Shore A hardness 35±2; tensile strength ≥4.5 MPa; tear strength ≥4.0 Kgf/mm; elongation ≥450%; workable time ≥60 min at 25°C; complete cure in 60 seconds at 150°C for thickness below 1 mm.
Selection should not rely only on “high transparency,” “high tensile strength,” or “good anti-slip.” First confirm the fabric type and pretreatment, screen printing or other coating method, target film thickness and pattern, A/B mixing and metering, curing temperature and time, whether multiple print passes are used, and the project acceptance criteria for anti-slip, abrasion resistance, wash resistance, heat resistance, transparency, and adhesion. This article does not equate typical mechanical data with a specific number of wash cycles, abrasion grade, or fire rating. IOTA can provide addition-cure liquid silicone rubber raw materials and corresponding product data; the company does not provide complete formulations or formulation development services.
The product is used for fabric coating and anti-slip applications, and also for silicone products, electronic potting, and coating. Different projects focus on different points: screen printing on workable time, thixotropy, and overprint definition; anti-slip on surface friction and planted-rubber adhesion; abrasion and wash resistance on cure degree and adhesion; high transparency on visible-light performance and film thickness; electronic potting on flow, bubble release, and curing. Selection should start with the fabric type, application method, and target defect, not just “fabric coating silicone.”
| What to confirm | What to specify in an inquiry or sample request |
|---|---|
| Fabric and pretreatment | Pure cotton, polyester-cotton, nylon, linen, wool, silk, etc.; surface cleaning, heat setting, primer, or other treatment |
| Application method | Screen printing, knife coating, coating, or other method; mesh count, pattern, number of print passes, target wet/dry film thickness |
| Mixing and metering | Two-component A/B; mixing ratio, metering accuracy, mixing uniformity, and workable time |
| Curing conditions | Curing temperature and time; the data give 60 seconds at 150°C for thickness below 1 mm; actual conditions should be confirmed with workpiece thickness and equipment |
| Acceptance criteria | Anti-slip, abrasion resistance, wash resistance, heat resistance, transparency, hardness, tensile strength, tear strength, adhesion, etc. |
| Sample preparation | Sample size, fabric batch, number of print passes, multiple overprints, additional layers, sample quantity |
If the customer already has a test specification, obtain the original document first. When criteria are missing, confirm them with the project owner and test laboratory before making samples, so that both sides do not discover different interpretations of “pass” after testing.
IOTA LSR 3140 is a two-component addition-cure liquid silicone rubber. Both Component A and Component B are colorless or translucent viscous liquids, with viscosities at 25°C of 60,000±5,000 mPa·s and 50,000±5,000 mPa·s, respectively. Workable time is ≥60 min at 25°C, and complete cure is 60 seconds at 150°C for thickness below 1 mm. Actual curing should be confirmed with fabric heat tolerance, film thickness, equipment heating efficiency, and number of overprint layers. A tack-free or briefly set film does not necessarily mean fully cured; under-curing can affect adhesion, abrasion resistance, and wash resistance.
When comparing candidate solutions, keep fabric batch, pretreatment, mixing ratio, mesh count, and curing conditions as consistent as possible. If film thickness, number of print passes, or additional layers are changed, record them separately.
The product features state high three-dimensional definition, excellent texture, and easy operation, and it can be used for decorative tapes, woven tapes, anti-slip tapes, woven-label specialty silicone (fabric coating silicone), and anti-slip decorative tablecloths. Screen-printing pattern definition, overprint accuracy, and planted-rubber adhesion depend on mesh count, compound viscosity, number of print passes, and curing conditions; one set of parameters cannot simply be applied to all fabrics.
Different fabrics—pure cotton, polyester-cotton, nylon, linen, wool, and silk—have different surface properties, water absorption, and heat tolerance, so adhesion and anti-slip performance should be evaluated separately. For functional fabrics such as anti-slip fabric, waterproof fabric, sealing fabric, insulating fabric, and anti-corrosion fabric, the corresponding functional criteria should also be confirmed, not just anti-slip or transparency.
The product specifications give Shore A hardness 35±2, tensile strength ≥4.5 MPa, tear strength ≥4.0 Kgf/mm, elongation ≥450%, shrinkage below 0.1%, and describe good anti-slip performance, no staining, low hardness, firm planted-rubber adhesion, abrasion resistance, wash resistance, heat resistance, high transparency, high tensile strength, tear resistance, and good adhesion. These are typical data under the corresponding conditions in the product data and should be understood together with fabric, film thickness, curing conditions, and test methods.
“Abrasion resistance, wash resistance, and heat resistance” are feature descriptions, not the same as having passed a specific abrasion cycle count, wash cycle count, temperature class, or fire standard; relevant projects should be verified separately according to the corresponding specification. Low shrinkage is favorable for dimensional stability, but finished dimensions are also affected by fabric, printed pattern, and curing.
Obtain the customer’s service conditions and acceptance criteria; confirm whether anti-slip, abrasion resistance, wash resistance, heat resistance, transparency, and adhesion are targets or existing results.
Specify fabric type, surface treatment, application method, mesh count and pattern, target film thickness, A/B mixing ratio, and curing conditions.
Check the current IOTA LSR 3140 data, then have the user make representative samples and keep records of mixing, printing, overprinting, and curing.
Arrange tests as agreed; keep sample identity, test conditions, observation photos, and evaluation results in the report. Before expanding use, confirm whether the samples represent actual workpieces.
IOTA/Anhui Iota Silicone Oil Co., Ltd. positions itself as a solution provider across the organosilicon industry chain and can provide addition-cure liquid silicone rubber raw materials and corresponding product data. When communicating, provide the fabric type, existing application method, mesh count, target defects, and curing equipment together to facilitate candidate screening; the company does not provide complete formulations or formulation development services.
First define the fabric, film thickness, curing conditions, and wash criteria, and then obtain the corresponding test evidence. The product features list wash resistance, but this is not the same as having passed a specific wash-cycle count.
The data give complete cure in 60 seconds at 150°C for thickness below 1 mm. Actual workpiece thickness, fabric heat tolerance, and equipment heating will affect curing and should be confirmed with representative samples; this condition cannot be directly applied to all thicknesses.
This value is at 25°C. Mesh count, pattern, ambient temperature, and number of print passes all affect workable time and should be verified under actual printing conditions.
No direct inference can be made. Pure cotton, polyester-cotton, nylon, linen, wool, and silk have different surface properties; adhesion and anti-slip performance should be evaluated separately.
Not necessarily. Transparency depends on film thickness, fabric background color, curing conditions, and test method, and should be confirmed separately on the target film thickness and substrate.
No. Abrasion resistance, wash resistance, and heat resistance are different evaluation dimensions and must be tested separately against project criteria; they cannot be directly converted into outdoor service life or fire rating.
