3D-ADD SH, Self-Heal temperature-targeted repair additives for 3D printing resins

Product description

3D-ADD SH are dynamic self-healing additives supplied in a 100% reactive, ultra-low-odor medium for SLA, DLP and LCD resins at 385–405 nm. They enable interlayer re-bonding, post-print repair, and cure-stress relaxation at defined activation temperatures.

Each grade is tuned so designers can select the right balance of mobility and toughness for their resin system. Available grades are SH-RT, SH-60, SH-80, SH-100 and SH-120, with extended grades SH-140 and SH-180 available on request.

Application framework

Designed for use with SLA, DLP and LCD resin systems operating at 385–405 nm within industrial and R&D environments. Suitable for soft, delicate, optical, engineering and high-performance printed components requiring interlayer welding, post-print self-repair and stress relaxation.

Typical applications

• Interlayer welding and post-print self-repair of SLA, DLP and LCD printed parts
• Soft or delicate components and thin optics
• Optical and delicate functional parts
• General-purpose repair applications
• Engineering, higher-Tg and thermal-cycling parts

Measured physical properties

• Appearance: Clear to pale-yellow liquid
• Odor: Very low, neutral
• Viscosity (25 °C): SH-RT/60 ≈ 300–700 mPa·s
• Viscosity (25 °C): SH-80 ≈ 500–900 mPa·s
• Viscosity (25 °C): SH-100 ≈ 700–1200 mPa·s
• Viscosity (25 °C): SH-120 ≈ 900–1500 mPa·s
• Density (25 °C): ≈ 0.99–1.10 g/cm³
• Color (APHA): typically < 60 (clear grades)
• SH-RT activation: RT with light assist; 40–60 °C gentle assist
• SH-60 activation: 55–70 °C (10–30 min)
• SH-80 activation: 75–90 °C (10–20 min)
• SH-100 activation: 95–110 °C (10–20 min)
• SH-120 activation: 115–130 °C (10–20 min)
• Shelf life ≈ 12 months sealed
• Storage: 15–25 °C, dry and protected from light
• Delivery time is around 3–4 weeks after ordering

Functional performance characteristics

• Heat- or light-assisted interlayer welding and post-print self-repair
• Releases internal stress, minimizing micro-cracking and warpage
• Improves fatigue resistance and toughness in brittle matrices
• Optical-friendly at recommended use levels
• Low-yellowing design at typical loadings
• 100% reactive (no non-reactive solvents)
• Ready to use
• Mixes directly with standard UV-curable resins

Processing and handling performance

• Dosage: 5–10 wt% into the host resin (typical 7–10%)
• For softer/flexible hosts, 3–5% may suffice
• For very brittle hosts, validate up to ~12%
• Stir under moderate agitation until homogeneous
• Temper to 40–50 °C if needed
• Degas before printing
• Protect from stray light
• Expect a slight increase in exposure vs. baseline; typical +5–15%
• Re-optimize initial and per-layer cures
• Align surfaces and apply the grade’s activation temperature for 10–30 min under light pressure
• For SH-RT, use room temperature with localized light-assist to lock the interface
• Follow the host resin’s standard UV post-cure after the repair cycle
• SLA/DLP/LCD systems operating at 385–405 nm
• Compatible with common 3D-resin matrices including rigid-tough, tough-clear, engineering clears and flexible systems
• Compatible with clear and pigmented formulations, verify in opaque/filled systems
• Use standard PPE (gloves, goggles, lab coat) and adequate ventilation
• Avoid prolonged exposure to strong light during mixing
• Consult the SDS for detailed handling information
• It is supplied as a kit, which contains the product and a 10 gram sample of 3D-ADD SHB1 Self-Heal Booster, one graduated beaker and one empty 250 mL black bottle to measure, mix, keep and protect the 3D resins from daylight
• Please do not expose any 3D resins to natural or room light to prevent their curing

Chemical and safety characteristics

• 100% reactive
• Ultra-low-odor medium
• Added metals/amines: None
• For industrial and R&D use only
• Not evaluated for implantable, pharmaceutical, or food-contact applications unless stated in writing

Testing & processing disclaimer

Exact activation depends on host Tg, degree of cure, section thickness, and applied pressure. Validate on internal coupons. Use gentle pressure/clamping during dwell.

Disclaimer

This material is supplied as a professional manufacturing material and is not marketed as a finished medical device. Final part performance and suitability must be validated by the user according to the intended application.

Document reference: TDS-3D-ADD-SH-EN | Version: 1.0 | Last updated: March 2026