Decorative Paint Inspection
Architectural interior wall coatings: latex paint, water-based wall paint, diatomaceous earth paint, children's room specific interior wall paint
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Product Introduction
Detection range
(1) Product type
Architectural interior wall coatings: latex paint, water-based wall paint, diatomaceous earth paint, children's room specific interior wall paint
Building exterior wall paint: synthetic resin lotion exterior wall paint, elastic exterior wall paint, reflective thermal insulation exterior wall paint
Wood decorative paint: water-based wood paint, solvent based wood paint, furniture topcoat, wooden door and window coating
Special decorative paint: metal decorative paint, plastic decorative paint, fireproof decorative paint, anti mold decorative paint
Supporting materials: putty, primer, varnish, topcoat
(2) Application scenarios
Civil buildings: residential buildings, office buildings, hotels, schools, hospitals, indoor and outdoor walls, ceilings, wooden products
Public spaces: shopping malls, stations, venues, road guardrails, decorative coatings for signage and signs
Industrial Decoration: Factory Buildings, Equipment Enclosures, Steel Structure Decorative Protective Coatings
Special environment: damp bathroom, kitchen, balcony, outdoor exposure to sunlight, coastal high salt spray area
(3) Detection object
Raw materials: paint liquid, lotion, pigment, filler, additive
Finished product: unopened original paint, dry film coating after construction
Sample: Standard test panel, on-site sampling coating, aged coating
Testing items
(1) Basic physical and chemical properties
Status in container: check the uniformity of paint solution, whether there is caking, layering, precipitation and gel
Fineness: Detect the dispersion of pigment particles to avoid rough and uneven paint film
Viscosity: Evaluate construction fluidity using a Stomer viscometer and a coated cup test
Solid content: determined by drying method to determine the proportion of solid components, affecting film thickness and covering power
Drying time: Measure the duration of surface drying and actual drying to evaluate construction efficiency
Construction performance: leveling, covering power, brush/roll/spray adaptability, anti sagging performance
(2) Mechanical properties of paint film
Adhesion: Test the adhesion between the paint film and the substrate using the grid method and the pull off method to determine the level of detachment
Hardness: Pencil hardness and pendulum hardness testing to evaluate scratch resistance and impact resistance
Impact resistance: Heavy hammer impact test to check whether the paint film cracks or falls off
Flexibility: Bend test, cupping test, evaluate the deformation resistance of the paint film
Wear resistance/scrub resistance: The abrasion tester tests the number of scrubbing times and is suitable for interior wall and floor coatings
(3) Optical and appearance properties of paint film
Glossiness: Measure the mirror gloss at angles of 20 °, 60 °, and 85 ° to evaluate the decorative effect
Color and color difference: Determine the color difference value to ensure batch consistency and color matching accuracy
Appearance: Check the smoothness of the paint film, whether there are bubbles, pinholes, shrinkage holes, sagging, whitening, and discoloration
(4) Environmental and chemical resistance
Water resistance: immersion test, check for blistering, peeling, loss of gloss, and discoloration of the paint film
Alkali resistance: alkali immersion test, suitable for cement based wall coatings
Acid resistance: acid immersion test to evaluate corrosion resistance
Weather resistance: QUV artificial accelerated aging, xenon lamp aging, testing for loss of gloss, discoloration, powdering, and cracking
Moisture and heat resistance: high temperature and high humidity environment testing to check the stability of the paint film
Salt spray resistance: Salt spray test to evaluate the corrosion resistance of outdoor and coastal environments
Stain resistance: simulate stain testing to check the ease of cleaning of the paint film
(5) Environmental safety performance (core mandatory project)
Volatile organic compound (VOC) content: determined by gas chromatography to control indoor air pollution
Benzene derivatives: benzene, toluene, xylene (including ethylbenzene) content detection, strict control of carcinogens
Free formaldehyde: determined by acetylacetone spectrophotometry, restricted to allergenic and irritating substances
Heavy metals: soluble content detection of lead, cadmium, mercury, and hexavalent chromium to ensure human safety
Other harmful substances: residual detection of halogenated hydrocarbons, ethylene glycol ethers and ether esters, isocyanates (TDI/HDI)
Radiation: Limit detection of radioactive isotopes in building materials to avoid radiation hazards
Testing Standards
GB/T 3186-2006: Sampling of raw materials for paints, varnishes, and paints and varnishes
GB/T 5206-2015: Terminology for paints and varnishes
GB/T 1725-2007: Determination of non-volatile matter content in paints, varnishes and plastics
GB/T 1728-2021: Determination of drying time for paint film and putty film
GB/T 6753.1-2007: Determination of Grinding Fineness of Paints and Varnishes
GB/T 9286-2021: Cross cut test for paints and clear coatings
GB/T 9754-2007: Paints and Varnishes - Determination of 20 °, 60 °, and 85 ° specular gloss of paint films without metallic pigments
GB/T 23990-2009: Determination of Benzene, Toluene, Xylene, and Ethylbenzene in Coatings - Gas Chromatography Method
GB/T 23993-2009: Determination of formaldehyde content in water-based coatings Acetylacetone spectrophotometric method
GB/T 30647-2014: Determination of soluble harmful elements content in coatings
GB/T 9756-2018: Synthetic resin lotion interior wall coating
GB/T 9755-2014: Synthetic resin lotion exterior wall coating
GB/T 34676-2017: Interior Wall Coatings for Children's Room Decoration
GB/T 23984-2009: Paints and Varnishes - Determination of Volatile Organic Compounds Content in Low VOC Latex Coatings
GB 18582-2020: Limit of harmful substances in interior decoration materials and interior wall coatings
GB 18581-2020: Limit of harmful substances in solvent based wood coatings for indoor decoration materials
GB 50325-2020: Standard for Indoor Environmental Pollution Control of Civil Building Engineering
GB 6566-2010: Limits for Radionuclides in Building Materials
ISO 2409: Cross cut test for paints and varnishes coatings
ISO 11341: Artificial accelerated aging of paints and varnishes (xenon arc lamp)
ASTM D3359: Determination of Adhesion of Paint and Varnish Films
ASTM D2486: Standard Test Method for Scratch Resistance of Architectural Coatings
ASTM G154: Standard Practice for Operating Fluorescent Ultraviolet Lamp Equipment Exposed to Non Metallic Materials
was established in 2011. As a national high-tech enterprise recognized by the Zhejiang Provincial Higher People's Court as a judicial authentication institution for construction engineering quality, we specialize in structural performance testing and safety assessment of construction projects, special equipment, communication towers, electromagnetic environments, large bridges, and building safety appraisal.
The company has more than 100 professional and technical personnel, over 90% of whom hold various medium and senior technical certificates. Equipped with complete testing equipment worth over RMB 10 million, our business scope covers the whole country.
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