What items do chemical additives need to be tested? Where can I test 20

Some testing items of chemical additives.

Physical indexes: pH value, color, crystallization point, density, whiteness, particle size, oil absorption, activation determination, pH, boiling range, etc.;

Chemical indexes: purity and impurity content, evaporation residue, acidity, hydroxyl compounds, polymerization inhibitors, total aldehyde content, compound content, peroxide, elemental content, moisture, chloride, alcohol content, heavy metal content, ignition residue, insoluble matter content, water soluble matter content, sieve residue content, bulk density, looseness, 105 volatiles, etc.

Physical Properties: Appearance color, specific gravity, crystallization point, flash point, refractive index, thermal stability, epoxy value, thermal decomposition temperature, kinematic viscosity, freezing point, acid number.

Purity Ash, moisture, heating loss, saponification value, ester content.

Rubber grade evaluation volatile content, ash content, tensile strength, tensile strength.

Production parameter testing Mooney viscosity, thermal stability, shear stability, vulcanization curve, Mooney coke burning time.

Physical properties Apparent density, melting point, softening point, crystallization point, viscosity, acidity, iodine absorption value.

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Zhongke Testing. It has the ability to detect disinfection products, paints and coatings, and chemical products, and provides professional coating testing and analysis solutions.

Focusing on the physical and chemical properties, environmental performance, and ingredient formula of coatings, we provide professional and authoritative test reports. It has a complete quality management system, advanced inspection and testing facilities and equipment, and experienced laboratory professionals. We can provide professional testing services for our customers.

We can carry out all kinds of coating testing services, we can help you choose the right coating testing items according to the material, use, buyer's demand, target market, etc.; Meet the environmental protection requirements of the target market, reduce risks and optimize quality. Zhongke Testing.

Coating testing items include: harmful substance testing, antibacterial and anti-mildew performance testing, aging performance testing, chemical performance testing, etc., and the coating testing report has CMA qualification, which can be used as a trade reputation Yeyi certificate or quality assurance fairness statement.

The general coating additives testing items are: pH value, active content, fineness, viscosity, wettability, surface tension, stability, corrosion inhibition, harmful substance detection, water content, scale inhibition, acid and alkali resistance, thermal stability, iodine value, purity, sealing, etc.

Different coating additives will test the appropriate items according to their performance, and I don't know what coating additives you want to test, so I can't give you an accurate answer, but the above answers include most of the items that paint additives need to be tested.

Common test items of chemical additives: purity, density, pH value, ultimate viscosity, scale inhibition, corrosion inhibition, critical micelle concentration, interfacial tension, wettability, iodine value, acid and alkali resistance, viscosity, activity test, specific surface area, empty volume ratio, thermal stability, stability, cooling, corrosiveness, sealing, harmful substance detection, water content, trace elements.

Analysis items: formula analysis, ingredient identification, content analysis, ingredient comparison, ingredient testing, qualitative and quantitative analysis.

Testing items for coating additives.

Physical indexes: pH value, color, crystallization point, density, whiteness, particle size, oil absorption, activation determination, pH, boiling range, etc.;

Chemical indexes: purity and impurity content, evaporation residue, acidity, hydroxyl compounds, polymerization inhibitors, total aldehyde content, compound content, peroxide, elemental content, moisture, chloride, alcohol content, heavy metal content, ignition residue, insoluble matter content, water soluble matter content, sieve residue content, bulk density, looseness, 105 volatiles, etc.

Testing standards for coating additives.

HG T 4492-2013 Natural nonionic surfactant - Tea saponin.

GB T 24802-2009 Rubber plasticizer A

GB T 8826-2011 Rubber antioxidant TMQGB T 13173-2008 Surfactant Detergent test method.

GB T 5553-2007 Surfactants -- Water repellent -- Water resistance determination method.

GB 11987-1989 Surfactant industrial alkane sulfonates Determination of total alkane sulfonate plates.

Commonly used functional additives for coating additives include defoamers, dispersants, rheology agents, leveling agents, matting agents, anti-slip agents, anti-static agents, etc. The polymer wetting and dispersing agent forms a thick and firm adsorption layer on the surface of the pigment, and the dispersion system has good stability. Its molecules have multiple adsorbent group structures and solvation chain structures, and most of them are block polymers such as polyurethane, polyacrylate, polyester and grafted polymer components.

**Can you carry out coating additives testing?

Zhongke Testing. Provide chemical additives testing services, including coating additives testing, with CMA testing qualifications, which can provide manufacturers and users with quality control of chemical additives.

The test shows that when the floor coating with poor dispersion effect is used, the mechanical properties of the paint film are reduced, the paint film gloss is low, and the color is uneven. If the dispersant is not selected properly or the amount of dispersant is too small, the pigment filler can not be dispersed to the required fineness, the dispersion system is unstable, and the pigment filler is prone to flocculation, aggregation and sedimentation, resulting in poor storage stability of the coating, and in serious cases, the paint can not be used. When there is too much dispersant in a coating system, the excess dispersant causes a severe drop in the surface tension of the coating and makes the dispersion system unstable.

When choosing, we should pay attention to the synergy and antagonism between additives; adaptability of additives to processing conditions; the appearance, odor, durability and whether the additives will be contaminated, etc.; The integration of the additive and the additive is a more important point. If the additives are not compatible with the coating, it will affect the appearance of the floor and cause a series of coating film defects.

The testing items of coating additives mainly include physical and chemical indicators, paint film performance, paint film reliability, and composition analysis

Physical and chemical indicators: appearance and transparency, color, viscosity, fineness, flash point, density, outflow time, hiding power, storage stability, non-volatile content, soluble metal content (lead, antimony, barium, cadmium, hexavalent chromium, chromium, mercury), volatile organic compound (VOC) content, benzene, toluene, ethylbenzene and xylene content, chlorinated hydrocarbon content, formaldehyde content, DDT content, lacquer-based acid value, lacquer-based saponification value, lacquer-based softening point, lacquer-based glass transformation temperature, etc.

Paint film performance: color, white and light paint contrast ratio, drying time, back tack, sag resistance, thickness, hardness, adhesion, flexibility, impact resistance, putty film sanding, wear resistance, bending test, pendulum damping test, non-volatile object integral, Buckholz indentation test, scratch test, palletizing resistance test, cupping test, gloss, wood coating anti-adhesion, insulating paint film breakdown strength, etc.

Paint film reliability: water resistance, oil resistance, damp heat resistance, mold resistance, algae resistance, solvent wiping resistance, moisture resistance, heat resistance, neutral salt spray resistance, liquid medium resistance, filament corrosion resistance, wood coating yellowing resistance, architectural coating alkali resistance, building coating scrubbing resistance, architectural coating coating stain resistance, architectural coating coating freeze-thaw cycle resistance, latex paint freeze-thaw resistance, marine paint salt water resistance, antibacterial coating antibacterial, etc.

Component analysis: component analysis, formula analysis, qualitative analysis, quantitative analysis, chemical composition analysis, formula reduction, etc.

Coating additives testing unit.

Zhongke Testing. It can provide accurate testing of coating additives, and the report of testing coating additives can be stamped with CMA qualification seal, which can provide quality control of coating additives for manufacturers and users.

Physical Properties: Appearance color, specific gravity, crystallization point, flash point, refractive index, thermal stability, epoxy value, thermal decomposition temperature, kinematic viscosity, freezing point, acid number.

Purity: ash, moisture, heating reduction, saponification value, ester content Rubber grade evaluation: volatile content, ash, tensile strength, tensile strength, tensile strength Production parameter testing:

Mooney viscosity, thermal stability, shear stability, sulfidation curve, Mooney coke burning time physical properties: apparent density, melting point, softening point, crystallization point, viscosity, acidity, iodine absorption value.

What additives are needed for chemical additives testing items. There are still differences in the testing items of different chemical additives. This needs to be determined according to the relevant testing standards.

The conventional testing items of chemical additives are:

Physical property test items: appearance color, specific gravity, crystallization point, flash point, refractive index, thermal stability, epoxy value, thermal decomposition temperature, kinematic viscosity, freezing point, acid number, apparent density, melting point, softening point, crystallization point, viscosity, acidity, iodine absorption value, volatile matter, ash content, tensile strength, tensile strength.

Purity test items: ash, moisture, heating reduction, saponification value, ester content Production parameter test items: Mooney viscosity, thermal stability, shear stability, vulcanization curve, Mooney coke burning time.

?Release Information8 Work Evaluation? Positive reviews? Reverse evaluation of the figure (version 2) (59 photos).

Key testing items:

content, impurity elements, particle size, whiteness, color, ash, acidity, alkalinity, moisture, refractive index, density, viscosity, melting point, boiling point, volatile matter, softening point, crystallization temperature, insoluble matter, pH value, iodine absorption value, oil absorption value, pore volume, pore size, specific surface area. Content testing, ingredient identification, ingredient analysis and formula reduction, etc.

Key testing items:

Content, heterogram broad elements, particle size, whiteness, color, ash, acidity, alkalinity, moisture, refractive index, density, viscosity, melting point, boiling point, volatile matter, soft cleaning point, crystallization temperature, insoluble matter, pH value, iodine absorption value, oil absorption value, pore volume, pore size, specific surface area. Answer: Content testing, ingredient identification, ingredient analysis and formula reduction, etc