PVC is one of the world’s largest production of general-purpose plastics with a wide range of applications. It is widely used in building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, foaming materials, sealing materials, fibres and so on. However, the product quality problems encountered in the actual production of PVC materials have been plaguing the productivity and cost of enterprises.
PVC materials are prone to the following difficulties and product defects during processing due to the disadvantages of high melt viscosity, poor fluidity and poor thermal stability:
PVC materials are prone to difficulties in processing:
1. Difficulty in controlling processing temperature: Due to the poor thermal stability of PVC, it is prone to thermal degradation at high temperatures, and requires precise control of the processing temperature in order to avoid the degradation of material properties.
2. Uneven plasticisation: High melt viscosity leads to uneven plasticisation of PVC, which affects the processing performance of the material and the quality of the product.
3. equipment wear: high viscosity PVC in the process of processing equipment caused by greater wear and tear, shorten the service life of the equipment.
4. Difficulty in demoulding: Due to the viscosity of PVC, demoulding may become difficult, resulting in product deformation or mould damage.
5. Low production efficiency: Due to the poor fluidity, the mould filling speed of PVC material is slow and the production cycle is prolonged, which affects the production efficiency.
PVC products are prone to product defects:
1. Unsmooth surface: Poor fluidity leads to ripples, unevenness or orange peel on the product surface.
2. Internal bubbles: high viscosity of the melt may lead to internal gas is difficult to discharge, the formation of bubbles.
3. Insufficient strength of the product: Uneven plasticisation or poor thermal stability may lead to insufficient strength and toughness of the product.
4. Uneven colour: poor thermal stability may lead to changes in the colour of the material during processing, affecting the appearance quality of the product.
5. Unstable product dimensions: Due to the inconsistency of thermal expansion and cooling contraction, the product may have dimensional deviations.
6. Poor aging resistance: poor thermal stability may cause the product to age easily and become brittle during long-term use.
7. Scratch and abrasion: Poor flowability and insufficient melt strength may result in the product surface being easily scratched and abraded.
In order to solve the processing problems of PVC materials and reduce the defects of PVC products, it is usually necessary to modify PVC materials by adding processing aids, optimising the processing process, improving the design of equipment, etc., in order to improve its processing performance and product quality.
SILIKE SILIMER 5235, Effective solutions to improve lubrication performance in PVC processing
SILIKE SILIMER 5235 is an alkyl modified silicone additive. It is used in super light plastic products such as PVC, PC, PBT, PET, PC/ABS, etc. At the same time, SILIKE SILIMER 5235 has a special structure with good compatibility with the matrix resin, no precipitation, no effect on the appearance and surface treatment of products.
The application advantages of SILIKE SILIMER 5235:
1. The addition of SILIKE SILIMER 5235 in the right amount can improve the surface scratch resistance and abrasion resistance of PVC products.
2. Reduce surface friction coefficient, improve surface smoothness;
3. Make products have good mold release and lubricity, improve processing efficiency.
4. Adding SILIKE SILIMER 5235 in the right amount can effectively extend the processing cleaning cycle and improve production efficiency.
Are you troubled by plastic modification, do you want to improve the processing fluidity and product surface properties of PVC materials or other polyolefin materials, if you are looking for cost-effective plastic processing aids, welcome to choose SILIKE.
Chengdu Silike Technology Co., Ltd, a chinese leading Silicone Additive Supplier for modified plastic, offer innovative solutions to enhance the performance and functionality of plastic materials. Welcome to contact us, SILIKE will provide you with efficient plastics processing solutions.
Contact us Tel: +86-28-83625089 or via email: amy.wang@silike.cn.
website:www.siliketech.com to learn more.
Post time: Aug-08-2024
