Requirements for choosing resin for talc transparent modified masterbatch

In addition to the special materials for the plastic fuel tank and the wheel cover of some models, other modification materials are mainly polypropylene.

Apart from a few PP/EPDM toughening and super toughness alloys such as bumper, wheel cover, etc., automobile polypropylene materials are filled with talc alloy, which occupies a very important position.

After more than 20 years of unremitting efforts, China has made great progress in the development, development and industrialization of automotive polyolefin plastics and their modified materials. The domestic automobile industry has fully realized the localization of polyolefin automobile special materials, and the achievements of some scientific research units have reached the international advanced level.

When choosing resin for talc transparent modified parent material, the following requirements should be met except the requirements for carrier resin in the modified parent material filled with calcium carbonate.

The properties of the resin used in plastics are similar, the compatibility is good, the melting point gap is small and the physical properties are good.

The resin MFR used in alumina talcum powder is significantly higher than that used in calcium carbonate filling modification matrix.

The resin content should be improved to ensure the performance of the product.

Haicheng talc powder wholesale in talc transparent modification of the mother material used in the auxiliary, should be selected as far as possible relative molecular quality, good lubricity, low volatile additives. According to the product requirements, the types of additives can be adjusted or increased. If partial use of polyethylene wax or polypropylene wax instead of paraffin wax, the coupling agent can choose silane, aluminate, etc., the dosage of coupling agent is 2% ~ 3%, and the dosage of auxiliary agent should also be appropriately increased.

Talc powder and calcium carbonate are both used for filling. The main purposes are:

1. Increase dimensional stability (i.e. decrease of shrinkage);

2. Increase the rigidity of materials.

3. Increase the heat resistance of materials.

4. Reduce material cost and other aspects

But there are drawbacks:

1. Density increases.

2. Poor use, reduced impact toughness,

3. The luster of materials has decreased.

Talcum powder and calcium carbonate as distinguished by granularity, generally is 300 mesh, 600 mesh, 800 mesh, 1250 mesh and 2500 mesh, of course, there is a thin, and commonly used in plastic can choose 800 mesh and 1250 mesh between the two, so that we can make the performance/price is highest.

Talcum powder price fluctuate, generally speaking, according to the mesh price won't have too big problem, for example: 800 mesh price is in commonly 700 to 850 yuan between, 1250 in 1000 to 1280 yuan between. It is not normal for prices to be too high or too low.

Talcum powder