AC blowing agent is a chemical blowing agent commonly used to create fine, controlled gas cells in polymers, rubber, and other foamable materials. In most industrial contexts, “AC blowing agent” refers to azodicarbonamide, also known as ADC or ADCA. When heated under suitable processing conditions, it decomposes and releases gas, helping manufacturers produce lightweight, expanded products with improved insulation, cushioning, or material efficiency. At Shitong, we supply AC blowing agent for industrial buyers who need consistent material selection, application guidance, and dependable export support.
AC blowing agent is not a finished foam by itself; it is an additive that must be matched with the polymer, processing temperature, activator system, dosage, and equipment. Its suitability depends on the required cell structure, density, surface quality, odor control, and production speed. A technical evaluation should therefore include a laboratory trial or production validation before full-scale purchasing.
During heating, azodicarbonamide undergoes thermal decomposition and releases gases that expand the surrounding polymer or rubber compound. The gas becomes trapped as cells while the material is in a softened or molten state. The final foam structure depends on decomposition behavior, melt strength, nucleation, mixing quality, and the timing between gas generation and material solidification.
Commercial AC blowing agent is generally supplied as a yellow to orange powder, although appearance can vary by grade and formulation. A commonly referenced decomposition range for standard AC blowing agent is approximately 200–210°C, but the effective processing range may be adjusted with activators or other formulation components. Gas evolution and decomposition characteristics should always be confirmed against the supplier’s technical data sheet and the customer’s actual processing conditions.
The primary function of AC blowing agent is to generate gas for cellular material production. This can reduce product density and create a controlled internal structure. Depending on the formulation, the resulting foam may provide cushioning, thermal insulation, sound absorption, or weight reduction.
AC blowing agent supports controlled expansion when its decomposition profile is compatible with the polymer’s softening and curing behavior. An unsuitable decomposition temperature can cause premature gas release, incomplete expansion, surface defects, or internal voids. For this reason, I recommend evaluating the material together with the complete compound rather than selecting a grade only by name.
Particle dispersion and decomposition control influence cell size and uniformity. A well-dispersed powder can help produce more consistent expansion, while agglomeration may result in uneven cells or localized defects. Milling, particle-size distribution, activator selection, and mixing sequence are therefore important considerations for foam manufacturers.
| Property or factor | Why it matters | What buyers should verify |
|---|---|---|
| Decomposition temperature | Controls when gas generation begins | Typical range, activation behavior, and processing compatibility |
| Gas evolution | Influences expansion ratio and density reduction | Test method, reported gas volume, and batch consistency |
| Particle characteristics | Affect dispersion and cell uniformity | Particle-size data, powder condition, and handling requirements |
| Residue and odor profile | Can affect appearance, odor, and downstream performance | Application-specific limits and post-processing requirements |
AC blowing agent is widely considered for foamed plastics such as PVC, polyethylene, polypropylene, and selected engineering polymer systems. It may be used in profiles, sheets, boards, molded components, edge protection, and other lightweight products. The exact formulation must account for polymer melt strength, processing temperature, residence time, and the required density.
In rubber processing, AC blowing agent can support the production of cellular sheets, seals, gaskets, insulation materials, and cushioning components. The blowing agent must be compatible with the curing system and the compound’s rheology. Excessive dosage may create oversized cells, poor compression behavior, or dimensional instability.
Foamed materials used in soles, insoles, pads, and protective components may use chemical blowing agents to reduce weight and improve cushioning. Buyers should evaluate rebound, compression set, surface finish, odor, and color requirements rather than focusing only on expansion volume. For footwear or consumer-facing products, regulatory and formulation requirements should be reviewed for the target market.
AC blowing agent can be considered for certain polymer-based insulation boards, profiles, and sealing products. Foam density and cell uniformity influence thermal performance and mechanical strength. The final material must also meet the applicable fire, emissions, and building-product requirements for its intended use; the blowing agent alone does not establish compliance.
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Buyers may encounter standard AC blowing agent, activated AC blowing agent, fine-particle grades, and application-specific modified products. Standard grades can be suitable when the polymer processing temperature aligns with the decomposition behavior. Activated grades are designed to decompose at a lower or more controlled temperature, which may help when the base resin or rubber compound cannot tolerate standard processing conditions.
Fine-particle grades may improve dispersion in systems where surface quality and cell uniformity are important. However, finer powders can also require stronger dust-control procedures and more careful handling. At Shitong, I recommend selecting the grade according to polymer type, equipment, target density, color requirement, and processing window rather than assuming that the finest or most active grade is always the best option.
A purchasing specification should include more than the product name. Important information may include chemical identity, appearance, purity or assay method, decomposition range, gas evolution method, particle-size distribution, moisture, residue, packaging, and storage conditions. Depending on the application, buyers may also need data related to odor, color compatibility, heavy metals, restricted substances, or regional regulatory requirements.
Dosage should be established through formulation trials instead of copied directly from another product. A starting range such as 0.5–5% by weight may be used in some development programs, but the appropriate level varies substantially with polymer, target density, activator, equipment, and product geometry. Any numerical dosage is only a development reference and should be confirmed by testing for expansion, cell structure, mechanical properties, and dimensional stability.
First, provide the supplier with the polymer or rubber type, processing temperature, production method, target density, and desired surface finish. These details allow a more useful grade recommendation than a general request for “AC blowing agent.” If the material is used in a regulated or consumer-facing product, identify the destination market and relevant compliance expectations at the quotation stage.
Professional buyers should request a current technical data sheet, safety data sheet, packaging information, storage guidance, and a certificate of analysis when applicable. I also suggest confirming lot traceability, production consistency, sample availability, and the supplier’s process for handling quality questions. Documentation should describe measurable product attributes without making unsupported claims about final product performance.
AC blowing agent is typically shipped as a powder, so packaging integrity, moisture protection, labeling, and transport conditions matter. Buyers should confirm available packaging sizes, minimum order quantity, lead time, export documents, and whether samples can be arranged before a commercial order. A supplier that responds clearly to formulation questions can reduce trial-and-error during scale-up.
At Shitong, I approach AC blowing agent supply as a combination of product selection and application support. We can discuss standard and activated options, particle characteristics, intended polymer system, packaging needs, and export requirements before recommending a purchasing route. Our goal is to help industrial buyers define a practical specification instead of choosing solely by price or generic product descriptions.
For a reliable evaluation, we encourage buyers to share the material being foamed, processing temperature, current dosage if available, target density, product dimensions, and any odor or color limitations. This information helps us prepare a more relevant quotation and identify the technical questions that should be answered by sampling. Final suitability should be confirmed through the customer’s own processing trial and quality-control criteria.
AC blowing agent is a practical option when you need controlled gas generation for lightweight, cellular plastic or rubber products. It can support density reduction, cushioning, insulation, and material efficiency, but the correct result depends on matching the grade to the full processing system. No single AC blowing agent grade is automatically suitable for every polymer, temperature profile, or product requirement.
The next step is to define your polymer or rubber compound, processing temperature, target density, product size, dosage objective, and market requirements. Send these details to Shitong for a product discussion, sample evaluation, and quotation based on your application. We will help you review the relevant grade options, documentation, packaging, and supply conditions before you place a commercial order.
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