Summary of Main Categories of Chemical Additives
I. Overview
Chemical additives can be classified by various methods, and can be divided according to function, mechanism of action, or application field. Mastering these classifications helps in selecting suitable additives in industrial production, improving product performance, processing efficiency and quality, while meeting the specific needs of different fields.
II. Classification by Function
1. Synthesis Additives
(1) Main functions:
Used in chemical reactions or polymerization processes to improve product quality and reaction efficiency. Regulate the polymerization reaction rate, control polymer molecular structure and molecular weight distribution, and ensure the stability of the synthesis reaction and product consistency.
(2) Common representative varieties:
Catalysts, initiators, emulsifiers, dispersants, polymerization inhibitors, terminators, oxidizing agents, molecular weight regulators, chain extenders, neutralizers, dehydrating agents, solvents.
(3) Main application scenarios:
Polymer synthesis, resin polymerization, organic synthesis reactions, emulsion polymerization production, and other chemical synthesis processes.
2. Crosslinking Additives
(1) Main functions:
Promote crosslinking reactions to form network structures, significantly improving the mechanical properties, strength, durability, and stability of materials.
(2) Common representative varieties:
Vulcanizing agents, crosslinking agents, photoinitiators, reactive diluents, reactive flame retardants.
(3) Main application scenarios:
Rubber vulcanization molding, epoxy resin curing, UV-curable coatings, ink production, thermosetting resin processing.
3. Functional Additives (Modifying Additives)
(1) Main functions: Improve existing properties or impart new functions.
(2) Common representative varieties:
Toughening agents, tackifiers, reinforcing agents, plasticizers, flame retardants, coupling agents, fillers, accelerators, softeners, conductive agents, foaming agents, colorants, decolorants, antistatic agents, chelating agents, deodorants.
(3) Main application scenarios:
Plastic modification, composite material preparation, adhesive production, functional polymer material processing, daily chemical product modification.
4. Stability Additives
(1) Main functions:
Prevent products from degrading due to light, heat, oxidation, and other factors during processing or use, extending service life.
(2) Common representative varieties:
Antioxidants, light stabilizers, heat stabilizers, ultraviolet absorbers.
(3) Main application scenarios:
Plastic pipes, rubber products, outdoor coatings, polymer films, wire and cable insulation layers.
5. Processing Aids
(1) Main functions:
Improve production processes and processing performance. Optimize the flowability, moldability, surface condition, and production efficiency of materials during processing, eliminate defects during processing, and reduce processing energy consumption and defect rates.
(2) Common representative varieties:
Lubricants, leveling agents, defoamers, dispersants, driers.
(3) Main application scenarios:
Plastic injection molding or extrusion molding, coating production and application, rubber compounding, ink printing, composite material processing.
III. Classification by Application Field
1. Plastic Additives
(1) Main functions: Improve processability, flexibility, and weatherability.
(2) Common representative varieties:
Plasticizers, heat stabilizers, antioxidants, lubricants, colorants, foaming agents, antistatic agents.
2. Rubber Additives
(1) Main functions: Enhance elasticity, strength, abrasion resistance, and anti-aging properties.
(2) Common representative varieties:
Vulcanizing agents, accelerators (such as MBT), anti-aging agents (such as 40AONA), reinforcing agents (such as carbon black), softeners (such as aromatic oils).
3. Coating Additives
(1) Main functions:
Improve coating performance, ensuring smooth coatings, bubble-free, and strong adhesion.
(2) Common representative varieties:
Leveling agents, defoamers, dispersants, driers, anti-settling agents (such as bentonite), thickeners.
4. Textile and Dyeing Auxiliaries
(1) Main functions: Improve hand feel, dyeing uniformity, and color fastness.
(2) Common representative varieties:
Detergents, softeners (such as silicones), leveling agents, fixing agents, penetrating agents.
5. Papermaking Additives
(1) Main functions: Improve paper strength, sizing properties, and drainage.
(2) Common representative varieties:
Sizing agents (such as AKD), retention and drainage aids (such as polyacrylamide), strengthening agents (such as starch).
6. Oilfield Chemical Additives
(1) Main functions: Enhance oil recovery and improve drilling fluid performance.
(2) Common representative varieties:
Viscosity reducers, drilling fluid additives, demulsifiers, paraffin inhibitors, water shutoff agents.
7. Mineral Processing Additives
(1) Main functions: Improve mineral separation efficiency.
(2) Common representative varieties:
Flotation agents, collectors, frothers, depressants, flocculants.
8. Daily Chemical Additives
(1) Main functions: Improve the performance and skin feel of cosmetics and washing products.
(2) Common representative varieties:
Surfactants, humectants, preservatives, fragrances, thickeners, emulsifiers.
9. Food Additives
(1) Main functions: Improve food color, flavor, and shelf life.
(2) Common representative varieties:
Preservatives (such as potassium sorbate), antioxidants (such as VE), emulsifiers (such as lecithin), thickeners (such as xanthan gum), sweeteners, pigments.
10. Building Material Additives
(1) Main functions: Improve the performance of concrete, mortar, and other building materials.
(2) Common representative varieties:
Water reducers (such as naphthalene-based), retarders, early strength agents, air-entraining agents, waterproofing agents.
11. Electronic Component Additives
(1) Main functions: Cleaning, protection, and improving component reliability.
(2) Common representative varieties:
Cleaning agents, fluxes, insulating varnishes, moisture-proof agents, conductive adhesives.
12. Water Treatment Additives
(1) Main functions: Purify water quality, prevent scaling, and sterilize.
(2) Common representative varieties:
Flocculants (such as polyaluminum chloride), scale inhibitors, bactericidal and algaecidal agents, corrosion inhibitors, defoamers.
13. Pesticide Additives
(1) Main functions: Enhance efficacy, dispersibility, and adhesion.
(2) Common representative varieties:
Emulsifiers (such as agricultural emulsifier series), wetting agents, dispersants, synergists, stabilizers.
14. Pharmaceutical Additives
(1) Main functions: Assist in drug forming, stabilization, and absorption.
(2) Common representative varieties:
Excipients (such as starch), binders, disintegrants, lubricants, coating materials.
15. Electroplating Additives
(1) Main functions: Improve coating uniformity, brightness, and adhesion.
(2) Common representative varieties:
Brighteners, leveling agents, wetting agents, stress relievers, anti-pitting agents.
