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construction auxiliary products composition analysis

construction auxiliaries are auxiliary chemicals added in industrial production to improve the production process, improve product quality and yield, or to give the product some unique application properties, and are widely used in architectural coatings, wood, cement, stone, concrete, construction adhesives and many other construction products.

although the amount of construction additives used is relatively small, they have a great impact on the performance of the product. for example, the role of additives in architectural coatings is to improve certain properties of coatings and coating films, and their main varieties and properties are as follows:

film-forming additives: general film-forming substances have their own film-forming temperature, different varieties, their film-forming temperature varies. when the external ambient temperature is lower than the film-forming temperature of the coating, the coating will appear cracking, chalking and other phenomena, can not be film. in order to make the coating adapt to a certain construction environment and form a continuous and complete film in a wide temperature range, a certain amount of film-forming additives should be added to improve the film-forming properties of the coating.

wetting and dispersing agent: the role of wetting agent is to reduce the surface tension of the wetted material, so that the pigment and filler particles are sufficiently wetted and keep the dispersion stable. the role of dispersant is to make the pigment and filler particles attached together to disperse into primary particles through shear force, and to make the pigment and filler particles stably dispersed in the system for a long time without adhesion through electrostatic repulsion and spatial resistance effect.

defoamer: the role of defoamer is to reduce the surface tension of the liquid, in the production of eliminating and reducing the foam generated to avoid adverse effects on the product.

common construction additives are mortar additives, cement grinding aid, cement retarder, high efficiency water reducing agent, naphthalene high efficiency water reducing agent, amino high efficiency water reducing agent, aliphatic high efficiency water reducing agent, melamine high efficiency water reducing agent, oil washing water reducing agent, anthracene water reducing agent, lignin water reducing agent, polycarboxylic acid high efficiency water reducing agent, compound water reducing agent, slow setting high efficiency water reducing agent, early strength water reducing agent, air-entraining water reducing agent, rapid setting agent, expansion agent, antifreeze agent, leak plugging agent, antifreeze agent, antifreeze agent, plugging agent, grouting agent, cement stimulating agent, marble polishing auxiliary, marble anti-slip auxiliary, marble bright auxiliary, solid grinding aid, liquid cement grinding aid, gas grinding aid.

noa has nearly 30,000 square meters of central laboratory, with organic laboratory, inorganic laboratory, physical and chemical laboratory, thermal analysis laboratory, mechanical laboratory, reliability laboratory, combustion laboratory, weathering laboratory, to provide raw material quality control, composition analysis, foreign matter analysis, performance testing, environmental performance, reliability testing one-stop analysis and testing services for building additives products.

service content

noa can provide composition analysis, formulation analysis, failure analysis, comparative analysis, foreign matter analysis, environmental protection testing and other services to help customers analyze the chemical composition and content of samples, or qualitative and quantitative analysis of specified components and content according to customer requirements, identification of raw materials, additives, specific components, content and foreign matter components and other analytical services.

i. service products

service products	common products
concrete admixtures	foaming agent, synergist, water reducing agent, foam stabilizer
construction adhesive powder	putty powder, diatomaceous earth, seam sealant, glue powder
stone additives	stone polishing agent, stone crystalline agent, stone staining agent, stone additives
cement additives	cement abrasives

ii. services

service	service definition
component analysis	qualitative and quantitative analysis of constituents
product development	composition qualitative and quantitative analysis raw material recommendation equipment recommendation process guidance
contrast analysis	qualitative and quantitative analysis of components description of component differences suggestions for performance improvement
foreign body analysis	foreign body discovery analysis protocol test results foreign body composition analysis conclusion
environmental testing	volatile organic compounds, harmful substances limit
specified component analysis	compound name and content test method
large-scale instrument testing	ftir, nmr, gcms, icpms, lcms, gpc and other instrument testing
raw material quality control	raw material purity testing, material characterization, qualitative and quantitative analysis of specified components

service process

q&a

diatomaceous earth is a relatively popular environmentally friendly paint, the use of the process is often found to have fallen powder, low strength, poor constructability of the situation, from the perspective of the formulation of the analysis, what is the reason for this phenomenon?

powder falling is mainly because the bonding of diatomite after construction is not enough, and the filler and the additives inside need to be adjusted; the strength is not enough mainly because the filler and additives in the product are not properly selected and proportioned; the bad construction performance is due to the problem of adding functional additives. overall need to adjust the filler and additives composition and ratio of diatomaceous earth products.

a seam sealer is a product used to fill tile joints. what are the advantages and disadvantages of single-component and two-component formulations of seam sealants?

single-component seam sealant is more common is benzene propylene emulsion, the advantages of easy construction, less difficult to operate, single-tube packaging, no ingredients, a variety of colors, the disadvantages are low hardness, brittle, adhesion is small, easy to fall off, shrinkage is obvious, sink, cavity, need to fill, short life. the advantage of two-component is high hardness, high strength, no collapse, no shrinkage, good stain resistance, can be used for adhesive repair, the disadvantage is that the two-component ingredients complex, general gloss, less color selection, construction operation is complicated. the market demand for both one-component and two-component is high, and seam sealant is a relatively mature and profitable product.

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

noa can test the voc and hazardous substance limits of building auxiliary products in accordance with national standards to determine whether they can meet national environmental standards; meanwhile, noa has the ability to analyze and develop new products to help enterprises develop in the direction of environmental protection.

sealing curing agent is a colorless transparent, easy to construct, non-toxic, non-combustible, strong penetration, can permanently seal the concrete liquid material. what is the working mechanism of sealing curing agent?

sealing curing agent by penetrating into the concrete interior, chemical reaction with the chemicals in it, the formation of gel, shrinkage of concrete pores and cracks, so that the concrete becomes a dense whole, thus greatly improving the concrete impermeability, wear resistance, freeze-thaw cycle, surface hardness and other performance indicators standard.

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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