My factory is going to make PVC pipes, is it better to use light calcium or heavy calcium?

Dude, make a sewer pipe, it's strange that the formula of 1:1 like dude doesn't lose! I've been out of the industry for a long time.

Previous experience, light calcium made products with good physical properties with heavy calcium. However, light calcium is not easy to plasticize, and it is relatively necessary to increase plasticizers (DOP or dibutyl ester, chlorinated paraffin, epoxy soybean oil, etc., or mixed), and the internal lubricant must be increased accordingly. If a compound stabilizer is used, it should also be adjusted accordingly.

Another point of pure light calcium formula is that for single-screw extruders, slipping and not making materials can be unbearable. It is recommended that 25 resin powder + 35 light calcium + 15 heavy calcium, if you feel that the yield is not ideal, you can also add crushed material or granules in real time during production.

Switch to twin screws to ensure that you can achieve 1:3 pipes. SG5 grade powder, Qilu's or Haihua, not very good, should choose large molecular weight model S-1200 and so on.

I used South Korea's LH-100 in the past, and it was very good, and the products made were much stronger in the same ratio, but now I don't know if there are any more.

The number of meters produced by light calcium is large, and the specific gravity is small, so it is called light calcium.

The first time I heard that the trunking was made of heavy calcium.

Heavy calcium is good in the production of PVC gusset, and heavy calcium is basically used, and there is no contact with light calcium. The main production areas of gusset plates are Wuxi, Jiangsu Province, and Haining, Zhejiang, which basically use heavy calcium, and some of them use active heavy calcium. The ratio of ordinary gusset PVC resin to calcium carbonate and the ratio of high-grade gusset can only be determined according to your raw materials, formula, and the quality of heavy calcium used, not fixed.

It depends on the customer's requirements for product performance and appearance.

If you introduce the product to the market, it is better to light calcium.

It depends on what effect you want to give birth to If you want to toughen it, light calcium is better, but it is not easy to disperse evenly, and the requirements are not high, and heavy calcium is generally recommended.

1. The particle size is different.

The particle size of heavy calcium products is unequal, and the particle size of the product varies depending on the crushing equipment. The particle size of ordinary light calcium products is generally, because the particle shape is spindle-shaped, it is difficult to accurately determine, and it is generally a range; The nano calcium carbonate in light calcium has a finer particle size, and the size is generally 20 200 nm.

The particle size of ordinary light calcium carbonate is generally about 2500 mesh, which can meet the performance needs of PVC pipes and profiles, so from the particle size consideration, PVC pipes and profiles are traditionally selected light calcium carbonate. In the past, due to the limitation of crushing equipment, heavy calcium carbonate could not reach this fineness, but now the particle size of heavy calcium carbonate can fully meet the needs, and even finer than light calcium carbonate;

2. The moisture content is different.

The moisture content of heavy calcium products is generally low, and it is also relatively stable, and the moisture of some high-grade heavy calcium products can even reach about it. The moisture of ordinary light calcium products sometimes fluctuates to a certain extent and is not stable. Traditionally, the distinction between heavy and light calcium is to test the moisture with a water instrument, and the water content is close to 1% is light calcium, and the small amount is heavy calcium.

3. The whiteness is different.

Due to the relatively large number of impurities in heavy calcium powder products, the whiteness of the product is generally 80% to 95%, and a very small number of products can reach 95%. Because of the chemical synthesis of light calcium powder products, a lot of impurities are removed, and the purity of the product is very high, so the whiteness is mostly 92% 95%, and some products can reach 96% 97%, which is also the main reason why light calcium products are mostly used for filling high-grade or light-colored products.

1. The alkalinity of the two is different.

The oil absorption of light calcium is much larger than that of heavy calcium, and the alkalinity is also relatively high. The dry hiding power of light calcium is much higher than that of heavy calcium, and it is also white than specific calcium.

2. The weight is different.

The same volume is, of course, heavy calcium is heavier. The same 25 kg package of heavy calcium and light calcium, light calcium is nearly 1 times larger than heavy calcium.

3. **Different.

In the application of coatings: heavy calcium is relatively safe, the dry hiding power is not high, and it is not as good as the whiteness of light calcium, but it is cheaper.

4. Different uses.

Light calcium is used in fillers, welding rods, organic synthesis, etc., and heavy calcium is used in the production of anhydrous calcium chloride, sodium dichromate, cement, etc.

Rubber generally uses light calcium, which has better reinforcing performance than heavy calcium, large filling amount, and high cost performance!

Considering the cost, heavy calcium should be selected, and active light calcium should be used for quality.

Heavy calcium **Low Good blanking Good rigidity I am a small advertisement Guangdong Weilinna I am a PVC stabilizer

Your formulation is incorrect, you don't need light calcium or heavy calcium to make latex paint, and the process of latex paint painting varies across the country. When the flatness or verticality of putty before priming is insufficient, it can be thickened to the required flatness or verticality by layering with high ash.

You're talking about paint, if you want to spray, you can only use light calcium, and if you brush it, then you can put it casually.