Think about it: What are the application scenarios of acrylic resin processing?

You have a keen insight! Acrylic resin is one of the most widely used synthetic resins because of its excellent weather resistance, transparency, adhesion and processability. It is mainly used in coatings, adhesives, plastic modification, optical materials and other fields, covering many industries such as architecture, automobiles, electronics and daily necessities.

I. Coating field (core application scenario)

Acrylic resin is the main raw material of coating industry, which can be divided into solvent type, water-based type and powder type according to dosage forms to meet different coating needs.

Architectural coating: the core film-forming substance of exterior wall latex paint and interior wall decorative paint, with strong weather resistance (no fading after 5-10 years of ultraviolet aging) and scrubbing resistance (scrubbing times ≥5000 times), suitable for interior and exterior wall coating of residential and commercial buildings; Acrylic resin is added to the floor paint to improve wear resistance and skid resistance, which is used in factory workshops and parking lots.

Automobile paint: the key component of automobile original paint (color paint, varnish layer) and repair paint. Waterborne acrylic resin is environmentally friendly and compliant, which can achieve high gloss (gloss ≥90%) and stone impact resistance, and ensure long-term bright and crack-free paint surface of automobile body; The matte coatings of automobile interior parts (instrument panel, door panel) also mostly adopt acrylic system, giving consideration to hand feeling and scratch resistance.

Industrial coatings: anticorrosive coatings for metal components (such as bridges and mechanical equipment coatings), acrylic resin and antirust pigments are matched to form a dense protective layer, which can resist salt spray corrosion for more than 1000 hours; Coatings for plastic parts (such as household appliance shells and toys) have strong adhesion (100-gauge test ≥4B), and can achieve various appearance effects such as matte, high gloss and matte.

Second, the field of adhesives and sealants

Acrylic resin adhesive has strong viscosity, fast curing speed, high and low temperature resistance (-40℃ to 120℃), and is suitable for multi-material bonding scenes.

Industrial bonding: metal and plastic, plastic and plastic bonding (such as the assembly of mobile phone middle frame and screen, home appliance parts), UV curable acrylic adhesive can be cured in a few seconds, with accurate positioning, suitable for automated production lines; Adhesion of automobile parts (such as window glass and interior trim panel), acrylic sealant has both adhesion and waterproof functions, and is vibration-resistant and not easy to age.

Daily consumption bonding: the core components of instant-drying adhesive for stationery and nail phototherapy adhesive, UV acrylic phototherapy adhesive has high hardness and good transparency after curing, and is not easy to yellow; Building sealant (such as door and window gap, glass curtain wall seal), water-based acrylic sealant is environmentally friendly and odorless, with strong weather resistance, and can adapt to cold and hot shrinkage and deformation.

Iii. Plastics and Modified Materials

Acrylic resin can be directly processed into plastic products or used as a modifier to improve the properties of other plastics.

Transparent plastic parts: polymethyl methacrylate (PMMA, commonly known as plexiglass) is polymerized from methyl acrylate, and the light transmittance is ≥92% (close to glass). It is used for optical lenses, acrylic plates, mobile phone protective cases, advertising light boxes, dashboard covers, etc. The processing methods include injection molding, extrusion and plastic absorption.

Plastic modification: adding acrylic resin to ABS plastic can improve weather resistance and surface gloss, which can be used for outdoor products and automobile exterior decoration; Acrylate resin is added to PVC plastics to improve low-temperature toughness and avoid brittle cracking in low-temperature environment, which is used for processing pipes and profiles.

Special plastics: Heat-resistant acrylic resin can be processed into high-temperature resistant parts (such as electronic equipment housings and aerospace lightweight parts), and the long-term use temperature can reach above 150℃, which is both lightweight and flame retardant (UL94 V0 level).

IV. Electronic and Optical Fields

Acrylic resin has insulation, transparency and precision molding, which is suitable for high-end scenes of electro-optics.

Electronic packaging: the packaging material of semiconductor chips and LED devices, UV-cured acrylic resin has good insulation (dielectric strength ≥20kV/mm), and there is no volatile matter after curing, which can protect electronic components from environmental erosion; The covering film of flexible printed circuit board (FPC) also adopts acrylic system, which is resistant to bending and high temperature.

Optical materials: the antireflection film and antireflection film of optical lens are coated with acrylic resin, which can reduce the light reflectivity (reflectivity ≤1%) and improve the imaging clarity; The optical lens and light guide plate of VR/AR equipment are processed with high-purity acrylic resin, with high light transmittance and small optical distortion.

Electronic consumables: acrylic resin component in photoresist, which can realize lithography forming of fine patterns (line width ≤1μm) and is used for semiconductor chip manufacturing; The conductive silver paste binding adhesive and acrylic system of the touch screen can ensure stable conductive performance and firm bonding.

V. Other special application fields

Textile and leather: coating finishing of textile fabrics (such as waterproof and breathable fabrics, elastic fabrics), acrylic resin coating can give fabrics waterproof, wrinkle-resistant and wear-resistant characteristics; Leather finishing agent (such as sofa leather and shoe leather) and water-based acrylic resin can improve the gloss and feel of leather, which is environmentally friendly and not easy to fade.

Ink and printing: As the connecting material of printing ink, acrylic ink has fast drying speed (surface drying time ≤30 minutes) and strong adhesion, and is suitable for food packaging printing (meeting FDA food contact safety standards) and plastic film printing (such as PET film and BOPP film).

Medical material: the coating material of medical catheter and dressing paste, medical grade acrylic resin has good biocompatibility (in line with ISO 10993 standard), no sensitization, and can achieve antibacterial and lubricating functions; Dental restoration materials (such as denture base powder) are also made of acrylic resin, which has good moldability and excellent compatibility with human tissues.