Thermosetting Plastics: A Complete Guide to Chemical Fixatives
Introduction: What are thermosetting plastics?
Thermosetting resins, also known as chemical anchors or injection compounds, are a revolutionary solution in the construction and industrial sectors. They use chemical bonding to create extremely strong anchors in concrete, brick, and other building materials—without the need to drill large holes or use mechanical anchors.
How Do Thermosetting Plastics Work?
Thermosetting plastics consist of two or more components that are mixed together and then cure through a chemical reaction. The process is simple:
- Injection: The mass is injected into a pre-drilled hole.
- Reaction: The chemical components react with each other.
- Hardening: The mass becomes hard and creates a strong bond.
- Load: After full curing, the assembly can be loaded.
Popular Products on the Market
Hilti Hit Series HIT-HY 200-R V3:
An ultimate injectable hybrid mortar with approvals for post-injected reinforcement and fastening of load-bearing base plates
This product is ideal for projects with high performance requirements.
HIT-HY 200-A V3: A fast-curing grouting compound classified as a chemical anchor for casting
HIT-ICE: A special product for cold weather with a working temperature down to -18°C, ideal for Nordic conditions.
HIT-CT: An injection mortar for fastenings in concrete that works for both post-injection of reinforcement and fastening with anchor rods. Chemically cured fasteners Chemically cured fasteners are injection mortars with the highest performance – fast-curing chemically cured fasteners approved for fastening in load-bearing foundation slabs and post-injected reinforcement.
These are workhorses in the fastening industry and are used for everything from light to heavy installations.
Other brands
There are also other suppliers of high-quality thermosetting plastics on the market:
Fischer - Known for innovative solutions
Rawplug - Traditionally reliable brand
Soudal - Swiss quality
Generic brands - Cost-effective alternatives
Work Safety and Environment
It is critical to understand the health and safety potential of thermosetting plastics:
Chemical Risks
Many thermosetting plastics contain methacrylate and dibenzoyl peroxide6, which can:
Cause skin irritation upon direct contact
Cause respiratory symptoms upon inhalation
Require ventilation during work
Protective measures:
✓ Always wear protective gloves (neoprene or nitrile)
✓ Safety goggles to protect the eyes
✓ Adequate ventilation or respiratory protection
✓ Dark clothing or protective coat
✓ Always read the safety data sheet (SDS) before use
Environmental considerations
Keep the paste away from drainage systems
Disposal in accordance with local waste management regulations
Choose environmentally friendly options where possible
Limited quantity - precise planning reduces waste
Advantages and Disadvantages of Thermosetting Plastics
Advantages
✓ Extremely strong bond
✓ Works in most building materials
✓ Requires smaller holes than mechanical anchors
✓ Works in holes and cracks
✓ Long service life (often 50+ years)
✓ Quick installation possible
Disadvantages
✗ Requires the right environmental conditions (temperature, humidity)
✗ May cause chemical exposure
✗ Requires training for optimal results
✗ Higher initial cost than some alternatives
✗ Cannot be easily removed later
Thermosetting plastics are a must-have tool for modern construction projects and industrial installations. By choosing the right product, following safety protocols, and using the correct techniques, you can ensure installations that will last for decades.
Remember:
Safety first – Protect yourself and your colleagues
The right product – Choose the right type for your project
The right technique – Follow the instructions carefully
The right environment – Temperature matters Invest in knowledge and safety – it always pays off!
Thermosetting plastics Self-study
Thermosets Self-Study Online Training provides participants with knowledge on how to handle thermosets safely in an industrial environment to minimize the risk of hypersensitivity and allergy.
The risk of hypersensitivity and allergy is high if the products are handled incorrectly.
Therefore, there is a training requirement when handling thermoset components.
Thermosets Self-study Training is carried out according to AFS 2023:10 Risks in work environment risks and guides participants through the safety procedures involved in working with thermosets.
The training meets the requirements of the REACH regulation.

