Testing Of Papermaking Additives
Including: cooking aids, bleaching aids, dispersants, defoamers, sizing agents, enhancers (dry strength agents, wet strength agents), retention and filtration aids, coagulants, de inks, softeners, preservatives, fungicides, dyes, pigments, coating adhesives, lubricants, waterproofing agents, water repellents, etc.
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Product Introduction
Detection range
(1) Product types: pulp additives, papermaking additives, coating additives, processing additives, water treatment additives.
Including: cooking aids, bleaching aids, dispersants, defoamers, sizing agents, enhancers (dry strength agents, wet strength agents), retention and filtration aids, coagulants, de inks, softeners, preservatives, fungicides, dyes, pigments, coating adhesives, lubricants, waterproofing agents, water repellents, etc.
(2) Applicable scenarios: raw material acceptance, product quality control, application effect evaluation, environmental safety testing, arbitration testing.
Testing items
(1) Appearance and physical and chemical properties
Appearance, odor, chromaticity, solid/non-volatile content, density, relative density, pH value, viscosity, fineness, particle size, moisture, solubility, dispersibility, stability, storage stability, freeze-thaw stability.
(2) Application performance
Retention rate, filtration rate, ash retention rate, slurry filtration speed, paper dry strength, wet strength, tear resistance, burst resistance, tensile strength, sizing degree, water absorption, breathability, smoothness, whiteness, opacity, coating coverage, glossiness, adhesive strength, dispersion effect, defoaming effect, de ink efficiency, flocculation effect.
(3) Environmental Protection and Safety Performance
Free formaldehyde, heavy metals (lead, cadmium, mercury, chromium, etc.), decomposable aromatic amines VOC, Alkylphenol polyoxyethylene ether (APEO), benzene derivatives, chlorine content, antibacterial rate, bactericidal rate, corrosiveness, acute toxicity.
Testing standards
GB/T 14683 Limits of harmful substances in water-based coatings, inks, and adhesives
GB 18582 Limits of Harmful Substances in Building Wall Coatings
GB/T 2679.1 Determination of Dimensions and Skewness of Paper and Paperboard
GB/T 2679.2 Determination of Transparency of Paper and Paperboard
GB/T 453 Determination of Tensile Strength of Paper and Paperboard
GB/T 1540 Determination of burst resistance of paper and paperboard
GB/T 455 Determination of Tear Resistance of Paper and Paperboard
GB/T 2679.10 Determination of adhesive strength for paper and paperboard
GB/T 267911 Determination of Water Absorption of Paper and Paperboard
GB/T 1033.1 Plastics - Determination of density of non cellular plastics
GB/T 2793 Determination of non-volatile matter content in adhesives
GB/T 1723 Determination of viscosity of coatings
GB/T 9724 Determination of pH value of coatings
GB/T 13452.1 Determination of Total Heavy Metal Content in Coatings
GB/T 23986 Determination of Formaldehyde Content in Coatings and Adhesives
GB/T 29493.2 Determination of APEO in Textile Dyeing and Finishing Auxiliaries
QB/T 2850 General Test Methods for Papermaking Additives
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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