Calcium carbonate masterbatch filled with PP carrier

September 30, 2008 on 10:09 pm | In Products | 2 Comments

Calcium carbonate filler material from the mother of the last century since the birth of the early 1980s, for plastic processing industry and society as a whole has made great contributions to the annual output reached more than 1,000,000 tons, is a modified plastic one of the important species.

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Masterbatch fill the first carrier to use the polymer when the PP is a by-product – random polypropylene (APP), hence known as APP masterbatch. After the Beijing Yanshan Petrochemical Corporation as a result of technological transformation, no depletion of the source of polypropylene, synthetic resin and calcium carbonate as a substitute during the shortage, the market demand. In this context, in order to polyethylene resin as the carrier of calcium carbonate-filled masterbatch came into being, such as LDPE1F7B is still the mother is expected to fill most of the major raw materials.

As the mother of filling materials are mainly used for stretching the use of polypropylene bags and packing tape, from the price, compatibility and strength in areas such as stretching, the use of polypropylene resin as the carrier filled more suitable for such a masterbatch.

The early 1990s, the then Ministry of Light Industry Institute of Plastics Processing application to be the first to introduce polypropylene powder as the carrier resin material calcium carbonate-filled mother, known as the PPM masterbatch, and in 1992 won the State New product class title.

PPM masterbatch small body PP powder as a carrier compared to price, such as PE resin 1F7B a significant advantage, so far has kept 1,000 yuan / ton over the price difference. At the same time, the low density of the PP in itself means that the same quality of the resin more of the number of vector borne polymer resin.

In addition the strength of PP is higher than PE, under the same conditions allow stretching, packaged with a higher intensity, such as different carrier made of resin-filled PP masterbatch for injection molding products, and will be stretching, packaged with Similar products such as the results of the PP as the carrier is about to fill the resin masterbatch with other resins for the carrier to fill the masterbatch, according to the QB 1126-91 “filled polyolefin masterbatch” industry standard spline made of injection, When the same formula, sample preparation equipment, conditions at the same time, PP as the carrier filled the masterbatch best.

The PP as the carrier filled with calcium carbonate masterbatch production of the main points are as follows:
① PP granular powder PP than cheaper, more evenly mixed with calcium carbonate, priority should be to use.
② powder melt flow rate of the PP not be too big, 4 ~ 10g/10min for good.
③ PP powder did not join the antioxidant, lubricant additives, and so on, we must add the appropriate amount.
④ PP powder stored in the process of gradual degradation, let sour, it must be time to ask the production and use in a timely manner, preferably in a polymer used up within one month after.
⑤ to PP powder as the carrier of calcium carbonate-filled masterbatch can use the same parallel to the twin-screw extruder processing, the ratio of calcium carbonate can reach more than 80%. The key question is not eager Granulation air-cooled surface model, we should not be using the pull water granulation, the only way to use air-cooled grain belt.
1.2.2 for ABS in place of the main goals of the modified Polypropylene

(1) Co., Ltd. of Japan Karp CALP resin composition, performance and purpose
CALP resin on many occasions can be expensive to replace the ABS, there are still obvious shortcomings.

  1. Than the density of large ABS;
  2. Low surface hardness, described intolerance;
  3. Less rigid;
  4. Low-gloss surface;
  5. Poor surface coating;
  6. Forming large size shrinkage. The original use of ABS injection molding die need to be modified to use modified PP resin.
Hint:If there is any inconsistency or conflict between the English and Chinese versions, the Chinese version shall prevail for all purposes.

2 Comments »

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  1. Dear Sir,
    we want to establish a unit to making the CaCo3 60% with PP 40% granule, please send us complete machinery information with price.Thanks, Nasir.

    Comment by M Rafiq Nasir — February 7, 2009 #

  2. How different would atalc masbatch be?
    Regards.
    Loffie Henn

    Comment by P.R.Henn — October 1, 2009 #

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