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PUR Rigid Foam

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PUR Rigid Foam

The insulation and refrigeration industry uses polyurethane systems and chemical catalysts as crucial materials in producing high-efficiency PUR rigid foam. Due to their diverse properties, such as excellent thermal conductivity, lightweight structural strength, and strong substrate adhesion, these materials are considered significant in this industry. As a professional manufacturer, Mingxu is committed to meeting the requirements of the rigid insulation sector. With our extensive knowledge and expertise, we are offering high-activity amine catalysts to ensure a precise foaming balance while increasing production efficiency. This contributes to the energy conservation and thermal protection of modern cold chain systems.

Types of PUR Rigid Foam

You can find Graphite Electrodes in a variety of grades and types. Let us have a look at the common types that are currently available in the market:

SPF
PUR Spray Foam Insulation

Widely used for residential and commercial building envelopes, providing seamless thermal barriers and air sealing directly on-site.

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PUR Refrigeration Grade Foam

Specifically designed for refrigerators, freezers, and cold rooms, focusing on extremely low thermal conductivity and excellent mold flow.

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PUR Discontinuous Sandwich Panels
PUR Pipe-in-Pipe Insulation

Specialized for pre-insulated district heating and industrial pipelines, requiring high compressive strength and long-term heat resistance.

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Maximizing Thermal Efficiency with High Closed-Cell Content
PUR Discontinuous Sandwich Panels

Used for specialized cold storage doors and architectural panels, emphasizing uniform density and strong adhesion to diverse substrates.

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Recommended Catalyst Material

Clear liquid MXFR-TEP (CAS 78-40-0), Triethyl Phosphate halogen-free flame retardant and viscosity depressant for PU foams

MXFR-TEP

MXFR-TEP (CAS 78-40-0) is a high-efficiency halogen-free phosphate flame retardant with ultra-low viscosity and 17% phosphorus content designed for superior fire resistance in rigid PU

Clear liquid MXFR-TCPP (CAS 13674-84-5), Tris(1-chloro-2-propyl) phosphate flame retardant for rigid polyurethane foams

MXFR-TCPP

MXFR-TCPP (CAS 13674-84-5) is a high-performance chlorinated phosphate ester flame retardant featuring exceptional thermal and hydrolysis stability, low viscosity, and superior compatibility for polyurethane foams,

Clear liquid MXC-B20 (CAS 7560-83-0), N-Methyldicyclohexylamine catalyst in a glass beaker for rigid polyurethane foams

MXC-B20

MXC-B20 (CAS 34364-26-6) is a high-performance, bismuth-based gelation catalyst that offers an eco-friendly alternative to organotin, providing a unique delayed viscosity build followed by an

Amber liquid MXC-T120 (CAS 1185-81-5) organotin catalyst in a beaker, known for excellent hydrolytic stability in polyurethane

MXC-T120

MXC-T120 (CAS 1185-81-5) is a high-purity organotin mercaptide catalyst that provides superior controlled reactivity and exceptional hydrolytic stability for microcellular shoe sole and rigid polyurethane

Light yellow liquid MXC-C18 Zinc Octoate catalyst for polyurethane coatings and elastomers

MXC-C18

MXC-C18 (CAS 7560-83-0) is a tertiary amine co-catalyst used to improve surface curing (skin cure) and increase hardness in polyurethane foams.

Clear light yellow liquid MXC-DPA catalyst in a glass beaker for polyurethane synthesis

MXC-DPA

MXC-DPA (CAS 63469-23-8) is a high-activity, low-emission tertiary amine catalyst featuring reactive hydroxyl groups to provide exceptional odor control and structural stability in flexible PU

Clear liquid MXC-F77 catalyst in a glass beaker for advanced polyurethane production

MXC-F77

MXC-70 (CAS 3855-32-1) is a high-performance, low-odor balancing tertiary amine catalyst designed to optimize reaction kinetics and structural integrity in polyurethane foams and coatings.

Clear liquid MXC-R70 specialty catalyst in a glass beaker for advanced polyurethane curing

MXC-R70

MXC-70 (CAS 1739-84-0)  is a high-reactivity tertiary amine catalyst that significantly accelerates curing and eliminates surface friability in rigid polyurethane foam systems.

Maximizing Thermal Efficiency with High Closed-Cell Content

The insulation performance of PUR rigid foam is primarily determined by its closed-cell structure and gas retention. Mingxu catalysts are specifically designed to optimize the gelling reaction, ensuring a high percentage of closed cells that trap insulating gases effectively. This results in a lower Lambda value (thermal conductivity), providing superior energy-saving performance for refrigerators, cold storage, and building insulation systems over their entire service life.

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Precision Control for Seamless Spray Foam Applications

In on-site spray foam applications, environmental conditions can significantly impact the reaction profile. Our specialized catalysts provide the necessary reactivity to ensure an instantaneous rise and rapid cure, preventing sagging on vertical surfaces or ceilings. Utilizing Mingxu solutions allows contractors to achieve uniform thickness, excellent air sealing, and consistent foam density regardless of the complex geometries or substrate temperatures encountered during construction.

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Enhancing Structural Integrity through Superior Substrate Adhesion

For sandwich panels and pre-insulated pipes, the bond strength between the PUR core and the facing material is critical for structural durability. Mingxu catalysts facilitate a balanced reaction that promotes excellent surface wetting and chemical bonding with various substrates, including metal, wood, and plastic. This ensures that the final components possess high compressive strength and dimensional stability, even when exposed to extreme temperature fluctuations.

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