Si-TPV dynamic vulcanizate thermoplastic silicone-based elastomer advances EVA foam technology

describe:

Ethylene vinyl acetate (EVA) is a versatile copolymer formed by blending ethylene and vinyl acetate monomers. The proportion of vinyl acetate (VA) content in EVA can vary from 2% to 60%, allowing for customization of its properties. EVA with lower VA content, around 3 wt%, is commonly used to modify polyethylene, while compositions with higher VA content, ranging from 5 to 50 wt%, find applications in manufacturing shrinkable films, food packaging, and footwear, among others.

SEND EMAIL TO US

Product Detail
Product Tags

Detail

Si-TPV dynamic vulcanizate thermoplastic silicone-based elastomer is an innovative Easy clean EVA foam modifier. it can be used as Modifier EVA foam for seating, Modifier It can be used as Modifier EVA foam for seating, Modifier EVA foam for protective equipment, Modifier EVA foam for construction toys, Modifier EVA foam for shin guards, and it can also facilitate the upgrade of Eva foaming running shoes technology upgrading. It has the advantages of reducing the thermal shrinkage of EVA foam, improving the resilience and abrasion resistance, improving the compression deformation of the material, and promoting the bubble holes to be more uniform and dense.

Key Benefits

01

Improve the elasticity of EVA foam materials

Compared with talcum powder or anti-abrasion agent, Si-TPV has better elasticity.
02

Improve the color saturation of EVA foam materials

Some groups on Si-TPV may interact with dye chromophores, enhancing color saturation.
03

Decrease the heat shrinkage of EVA foam materials

The elasticity of Si-TPV helps release the internal stress of EVA foam material.
04

Improve the wear anti-abrasion resistance of EVA foam materials

Si-TPV can participate in the reaction of the cross-linking agent, which increases the crosslinking density.
05

Heterogeneous nucleation

Si-TPV is uniformly dispersed in the EVA foam material, which can assist cell nucleation.
06

Decrease the compression deformation of EVA foam materials

Si-TPV has good high and low-temperature resistance performance, and can simultaneously improve the high and low temperature compression deformation of higher hardness EVA foam materials

Durability Sustainability

Advanced solvent-free technology, without plasticizer, no softening oil, and odorless.
Environmental protection and recyclability.
Available in regulatory-compliant formulations.

EVA foaming Guide

Si-TPV 2250 series has the characteristics of a long-term skin-friendly soft touch, good stain resistance, no plasticizer and softener added, and no precipitation after long-term use, especially suitably used for Super light high elastic eco-friendly EVA foaming material preparation.

Innovation in EVA Foam materials (4)

After adding Si-TPV 2250-75A, the bubble cell density of EVA foam gets slightly reduce, bubble wall thickening, and Si-TPV is dispersed in the bubble wall, the bubble wall becomes rough.

Comparison of Si-TPV2250-75A and polyolefin elastomer addition effects in EVA foam

Innovation in EVA Foam materials (5)

Innovation-in-EVA-Foam-materials-7

Innovation-in-EVA-Foam-materials-8

Innovation-in-EVA-Foam-materials-82

Application

By incorporating Si-TPV modifiers into your manufacturing processes, businesses can produce EVA foam materials endowed with enhanced resilience, durability, and comfort, catering to diverse applications, including shoe soles, sanitary products, sports leisure items, floor/yoga mats, and more.

Unlike its semi-crystalline counterpart, polyethylene, the introduction of VA monomers disrupts the formation of crystals in the polymer chain, resulting in reduced crystallinity. As the VA content increases, EVA becomes progressively amorphous, leading to changes in its physical and mechanical properties. While parameters like elongation at break, glass transition temperature, and density increase with higher VA content, others such as tensile strength, modulus, hardness, and melting temperature decrease. However, despite its enhanced elasticity, EVA may exhibit deficiencies in tear strength, wear resistance, and compression set, particularly in applications requiring robustness.

To overcome these limitations, EVA is often blended with rubbers or thermoplastic elastomers (TPEs), improving tensile strength, tear resistance, abrasion resistance, and chemical resilience compared to pure EVA. Blending EVA with TPEs like thermoplastic polyurethane (TPU) or polyolefin elastomers (POE) enhances viscoelastic properties and facilitates processing and recycling. Additionally, the emergence of olefin block copolymers (OBC) offers elastomeric characteristics and high-temperature resistance. OBC's unique structure, comprising crystallizable hard segments and amorphous soft segments, enables superior performance in various applications, with compression set properties comparable to TPU and TPV.
However, SILIKE Si-TPV dynamic vulcanizate thermoplastic silicone-based elastomer advances is a groundbreaking vulcanizate thermoplastic Silicone-based elastomer modifier. Compared to modifiers like OBC and POE, Key Highlights of Si-TPV include: ● Improve the elasticity of EVA foam materials ● Improve the color saturation of EVA foam materials ● Decrease the heat shrinkage of EVA foam materials ● Improve the wear anti-abrasion resistance of EVA foam materials ● Si-TPV can simultaneously improve the high and low-temperature compression deformation of higher-hardness EVA foam materials