ISO 8780-2-1990 “Mga pamamaraan ng pagkalat para sa pagsusuri ng pagkakakalat katangian ng pigments at fillers – Bahagi 2: Pagkakalat gamit ang mga vibrator”
panimula
ISO (International Organization para sa Standardisasyon) ay isang pandaigdigang pederasyon ng mga pambansang pamantayan ng katawan (Mga katawan ng miyembro ng ISO). Ang pagbuo ng mga internasyonal na pamantayan ay karaniwang isinasagawa sa pamamagitan ng ISO teknikal na komite. Ang bawat grupo ng miyembro na interesado sa isang paksa kung saan ang isang teknikal na komite ay itinatag ay may karapatang kumatawan sa Komite. Mga internasyonal na organisasyon, ang mga pamahalaan at mga non government organization na nakikipag ugnayan sa ISO ay kasangkot din sa gawaing ito. ISO ay gumagana nang malapit sa International Electrotechnical Commission (IEC) sa lahat ng bagay ng electrical standardization.
Ang draft international standard na pinagtibay ng Technical Committee ay ipapakalat sa mga miyembro ng mga katawan para sa pagboto. Publication as an international standard requires approval by a vote of at least 75% of the member bodies.
The international standard ISO 8780-2 was developed by the ISO/TC 35 Technical Committee on Paints and Varnishes.
ISO 8780 consists of the following sections, under the general heading Pigments and increments – Dispersion methods for assessing dispersion properties:
ISO 8780-2-1990 “Mga pamamaraan ng pagkalat para sa pagsusuri ng pagkakakalat katangian ng pigments at fillers – Bahagi 2: Pagkakalat gamit ang mga vibrator”
– Bahagi 1: Panimula
– Bahagi 2: Dispersion using oscillators
– Bahagi 3: Dispersion of grinding using high-speed impellers
– Bahagi 4: Dispersion using a bead mill
– Bahagi 5: Dispersion using an automatic grinder
– Bahagi 6: Dispersion using a three-roll grinder
Appendix A forms an integral part of this part of ISO 8780.
1 Saklaw ng Aplikasyon
Ang bahaging ito ng ISO 8780 specifies a method for dispersing pigments and increments using a shaking bed. The method is suitable for the preparation of multi-sample dispersion in pigment quality control. This part is used in conjunction with the assessment methods described in ISO 8781, using an agreed low viscosity adhesive system. It should be read together with ISO 8780-1.
Tala 1: The advantage of the oscillatory shaking method is that several batches of small amounts of abrasive can be tested simultaneously in a closed system with minimal solvent loss.
ISO 8780-2-1990 “Mga pamamaraan ng pagkalat para sa pagsusuri ng pagkakakalat katangian ng pigments at fillers – Bahagi 2: Pagkakalat gamit ang mga vibrator”
This method is limited to low-viscosity grinding substrates that allow the ball to move freely (tingnan sa 7.1). It is not suitable for optimizing paste formulations for other dispersion technologies.
2 Normatibong mga dokumento ng sanggunian
The following standards contain provisions which, by reference herein, constitute the provisions of this part of ISO 8780. At the time of publication, the version shown is valid. All standards are subject to revision and parties to agreements based on this part of ISO 8780 are encouraged to investigate the possibility of applying new versions of the following standards. IEC and ISO members maintain a register of currently valid international standards.
ISO 787-10:1981, General test methods for pigments and increments-Part 10: Pagpapasiya ng densidad – pyronometer method.
ISO 842:1984, Raw materials for paints and varnishes – Pag sampling.
ISO 2431:1984, Mga pintura at barnis – Determination of flow time using a flow cup.
ISO 8780-1:1990, pigments and increments – Dispersion methods for the assessment of dispersion properties – Bahagi 1: Panimula.
ISO 8780-2-1990 “Mga pamamaraan ng pagkalat para sa pagsusuri ng pagkakakalat katangian ng pigments at fillers – Bahagi 2: Pagkakalat gamit ang mga vibrator”
ISO 8781-1:1990, pigments and increments – Methods for assessing dispersion properties – Bahagi 1: Assessment against changes in tint strength of coloured pigments.
ISO 8781-2:1990, pigments and increments – Methods for assessing dispersion properties – Bahagi 2: Assessment against changes in grinding fineness.
ISO 8781-3:1990 Pigments and increments – Methods for assessing dispersion properties – Bahagi 3: Assessment from changes in gloss.
Ang standard information section lamang ang pampubliko. Upang makita ang buong nilalaman, kailangan mong bilhin ang pamantayan sa pamamagitan ng mga opisyal na channel.