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Titanium dioxide

Our company is a distributor in the territory of Kazakhstan of titanium dioxide (TiO2) «ANHUI GOLD STAR», whose production is located in China.

Titanium dioxide is a colorless solid crystalline substance. Titanium dioxide is not volatile, insoluble in acids and alkalis, non-toxic. Due to its structure (crystals), titanium dioxide does not absorb light, but refracts it and therefore it is used as a pigment in the manufacture of various products. The main property of titanium dioxide is giving high whiteness to the final product, that’s why this product is used in the paint, paper, plastic products, food, cosmetics and glass industries.

Titanium dioxide is widely used in the processing of plastics, for example, in window profiles based on PVC. It provides high whiteness and color intensity, protection against aging and yellowing of the material, improves the resistance of the final product to the harmful effects of the environment.

Rutile pigments disperse light better, overlap the painted surface (high index of hiding), have good weather resistance, do not lose their properties under the influence of UV-radiation.

Our company uses titanium dioxide in the production of white PVC profiles.

The Stabilizers

PVC polymers and products made of them are exposed to a set of factors of adverse effects (temperature, atmospheric oxygen and ozone, solar radiation, atmospheric pollution, etc.); as a result, mechanical, electrical properties and color may change.

PVC stabilizers are multi-component complex additives which are used to prevent breakdown of PVC during its processing. Thanks to stabilizers PVC products gain special chemical and physical properties.

They prevent degradation during extrusion.
Protect PVC profiles from deformation, discoloration and yellowing due to exposure to ultraviolet light.
Facilitate PVC formation.
Provide resistance to high temperatures.

PVC stabilizers are mainly used in the manufacture of pipes and fittings, window profiles, rigid and semi-rigid films, wires and cables, coatings, flooring, etc.

PVC is hard and brittle and only becomes malleable after the addition of plasticizers and stabilizers. Thus, PVC can only be treated with a stabilizer, which, at the same time, protects the final product from deterioration caused by exposure to various weather conditions, ultraviolet radiation or oxygen.

Impact Modifiers

Impact Modifiers for PVC are added to composite materials to improve the durability and toughness of plastic resins. In addition to impact performance, a number of other material characteristics such as optical and tensile properties, weatherability, processability, flammability, heat distortion and cost can also be improved by adding impact modifiers to PVC. One of the main applications of impact modifiers is in PVC resins: MBS (methyl butadiene styrene) and acrylics (impact modifiers) increase the impact resistance of PVC products without impairing other properties.

Impact resistance is one of the most critical properties in most plastics, especially styrenics, polyamides, PVC and thermosets. To solve this fragility problem, a mixture with a specific polymer or copolymerization with a monomer is usually carried out, generating a more flexible plastic material, which absorbs the impact generated energy and dissipates it in a non-destructive way.

The impact modification is somewhat complex, as it influences a lot other properties such as fluidity, gloss, elastic modulus, maximum processing temperature, etc. Other properties changes may not be linear and proportional to the amount of modifier incorporated in the polymer.

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