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paint and coating product composition analysis

a coating is a continuous film that is applied to the surface of the object being protected or decorated and can be firmly adhered to the object being coated. it is usually a viscous liquid prepared from resin, or oil, or emulsion, with or without the addition of pigments and fillers, with the addition of corresponding additives, and with organic solvents or water.

coatings generally consist of four basic components: film-forming substances (resins, emulsions), pigments (including body pigments), solvents and additives (auxiliaries). the film-forming substances are the main components of the coating film and include oils and fats, processed oil and fat products, cellulose derivatives, natural resins, synthetic resins and synthetic emulsions. film-forming substances are the main components of a coating film and include oils and fats, processed oils and fats products, cellulose derivatives, natural resins, synthetic resins and synthetic emulsions. pigments are generally divided into two types: colouring pigments, such as titanium dioxide and chrome yellow, and body pigments, which are often referred to as fillers, such as calcium carbonate and talcum powder. solvents include hydrocarbons. solvents (mineral spirits, paraffin, petrol, benzene, toluene, xylene, etc.), alcohols, ethers, ketones and esters. the main role of solvents and water is to disperse the film-forming base material to form a viscous liquid. it helps in construction and improves certain properties of the coating film.

the global trend in the coatings industry is towards the reduction of volatile organic compounds and other aspects. the share of traditional solvent-based coatings in china is beginning to decrease, in addition, the development of water-based coatings is beginning to accelerate and is gradually becoming a highly promising coating product. improving the quality and developing new varieties of water-based coatings is an important part of consolidating and developing water-based coatings.

noa has nearly 30,000m² central laboratory with organic laboratory, inorganic laboratory, physical and chemical laboratory, thermal analysis laboratory, mechanics laboratory, reliability laboratory, combustion laboratory, weathering laboratory, which can provide one-stop analysis and testing services such as raw material quality control, composition analysis, foreign substance analysis, performance testing and reliability testing for plastic materials and products.

service content

noa can provide composition analysis, formulation analysis, failure analysis, comparative analysis, foreign matter analysis, environmental protection testing and other services through spectroscopy, chromatography, nuclear magnetism and other large precision instruments, using "light, colour, heat, mass, meta-chemical" multi-analysis techniques, to help customers analyse the chemical composition and composition content of samples, or qualitative and quantitative analysis of specified ingredients and content according to customer requirements, identification of raw materials, additives, specific ingredients, content and foreign matter components and other analytical services.

i. service offerings

service offerings	common products
acrylate coatings	varnishes, water-based acrylic paints, white emulsions
polyurethane adhesive coatings	water-based finishes
epoxy resin coatings	powder coating, epoxy floor paint
silicone coatings	silicone brighteners, finishing agents, slip agents
uv coatings	uv paper varnish, uv plastic coating, uv water-based varnish

ii. services

service name	service definition
component analysis	qualitative and quantitative analysis of the constituents
system identification	resin system identification
comparative analysis	qualitative and quantitative analysis of constituents description of differences in composition suggestions for performance improvement
foreign body analysis	foreign body discovery analysis protocol test results foreign body composition analysis conclusions
failure analysis	failure background questionnaire analysis protocol test results failure analysis conclusions
environmental testing	volatile organic compounds, hazardous substances limits
specified component analysis	compound name and content test method
resin structure analysis	resin synthesis monomer types and ratios
large-scale instrument testing	py-gcms, tga, dsc, nmr and other spectroscopic tests
raw material quality control	raw material purity testing, material characterisation, qualitative and quantitative analysis of specified components

service process

q&a

what are the film-forming mechanisms of coatings?

coatings have two film-forming mechanisms, physical film formation and chemical film formation. the drying process, which relies on the evaporation of solvents in the coating or hot melting to obtain a dry, hard coating film, is called physical curing. chemical film formation refers to the process of coating a soluble (or fusible) polymer of low relative molecular mass on the surface of a substrate and then, under heating or other conditions, reacting between molecules to further increase the relative molecular mass or cross-linking to form a tough film.

what performance indicators are of more concern when manufacturing and storing paint products?

key performance indicators for the manufacture and storage of coatings are: viscosity, density, solids content, fineness, storage stability, precipitation delamination condition, and freeze-thaw stability.

as the paint industry moves towards an environmentally friendly approach, what support can noa provide to companies in this area?

noa can test paint products for voc and hazardous substance limits in accordance with national standards to determine whether they can meet national environmental standards; at the same time, noa has the ability to analyse research and development to help companies develop new products in the direction of environmental protection such as water-based paint.

what are the common testing standards for limits of hazardous substances in paint products?

the more common paint products are: gb 38468-2019 limits of hazardous substances in interior floor coatings, gb 38469-2019 limits of hazardous substances in marine coatings, gb30981-2020 limits of hazardous substances in industrial protective coatings, gb 24409-2020 limits of hazardous substances in vehicle coatings, gb 38507-2020 limits of volatile organic compounds (vocs) content in ink and other testing standards.

our advantage

authoritative qualification

noa has been approved by certification and accreditation administration of the people’s republic of china（cnca）(cnca-r-2002-051), and has obtained qualification of china inspection body and laboratory mandatory approval (cma),and has passed the multiple approvals of china national accreditation service for conformity assessment (cnas), international accreditation service (ias), united kingdom accreditation service (ukas), joint accreditation system of australia and new zealand (jas-anz). noa has been approved by state administration for market regulation of china, and has been recognized as inspection and testing institution of china's special equipment, as well as the qualification of china's national equipment supervision and engineering supervision. noa-dci is the notified body of the ce directive of the european commission. noa has been recognized by the international electrotechnical commission (iecq) by obtaining electronic component quality assessment system. it is also a national inspection and assessment notified body of import and export commodity in china.noa is a high-tech enterprise in shanghai.

improve performance, realize asset value appreciation, and service throughout the entire value chain

from pre-design to post-operation, noa has the ability to guarantee the whole life cycle of the business. noa, as an independent third-party inspection company, has a large number of domestic and international standards and specifications proficient in design, welding, non-destructive testing, painting, packaging and other fields the experienced team of professional engineers and inspection experts, with more than ten years of experience in the domestic market, is familiar with all aspects of the domestic industrial equipment supply chain, and can provide you with technical support services for the full life cycle of technical services in a timely manner, combining various products. inspection, certification, testing, consulting, and auditing services can provide you with one-stop all-round comprehensive services.

quality, efficiency and service

noa has formed a mature and solid operation system in the development of more than 20 years. we let technical experts who are familiar with market regulations and testing standards and have professional industry experience to carry out inspection, evaluation and design review work. while meeting the requirements of domestic and international standards, we ensure that customers can obtain satisfactory service results in the first time with accurate time-sensitive management methods, and ensure that customers can seize the opportunity in the market competition.

service area

noa inspection services currently cover europe, australia, russia, some middle east regions and most regions in china. noa can ensure the consistency and continuity of customer service in different regions, and eliminate the impact of unfamiliar environments on customer quality. the guarantees and the impact of project implementation enable customers to participate in different markets across the country or around the world with flawless quality.

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