Is the process of making EVA lure fishing rod wheel base toxic?

None.

EVA is the polymerization of ethylene and acetate. The Chinese chemical name: ethylene-vinyl acetate polymer (ethylene-vinyl acetate polymer), the English chemical name: Ethylene Vinyl Acetate Copolymer. EVA has a wide range of application fields. my country's market consumption is constantly increasing every year, especially in the shoemaking industry. It is used in the soles and interior materials of mid-to-high-end travel shoes, hiking shoes, slippers, and sandals. It is also widely used in the field of new energy, such as photovoltaic materials, solar cell adhesives, etc.

It is widely used in foam shoe materials, functional shed films, packaging molds, hot melt adhesives, wires and cables, toys and other fields.

1. EVA with a vinyl acetate content of less than 5%, its main products are films, wires and cables, LDPE modifiers, adhesives, etc.;

2. EVA with a vinyl acetate content of less than 5% %~10% EVA products are elastic films, etc.;

3. EVA with a vinyl acetate content of 20~28% is mainly used for hot melt adhesives and coating products;

< p>EVA is made of LLDPE (linear low density polyethylene) and acetic acid (VA).

Polymerization method of EVA:

1. High-pressure bulk polymerization (plastic products)

2. Solution polymerization (PVC processing aid)

< p>3. Emulsion polymerization (adhesive products)

4. Suspension polymerization

If the vinyl acetate (VA) content is higher than 30%, emulsion polymerization is used;

< p>If the vinyl acetate (VA) content is low, high-pressure bulk polymerization is used.

Main factors affecting the performance of EVA:

1. Melt Index (referred to as MI, dissolution index)

2. VA% acetic acid content

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With a certain melt index (MI), the higher the vinyl acetate (VA) content, the higher its elasticity, softness, compatibility, transparency, etc.; when the VA content decreases, its performance is close to Polyethylene (PE) has increased rigidity, wear resistance and electrical insulation.

With a certain VA content, the soluble index (MI) increases, the softening point decreases, the processability and surface gloss improve, but the strength will decrease. Otherwise, as the MI decreases, the molecular weight will increase, and the impact properties will decrease. Improved resistance to environmental stress cracking.

EVA is characterized by good softness, rubber-like elasticity, good flexibility at -50°C, transparency and surface gloss, good chemical stability, and anti-aging. It has good ozone resistance and is non-toxic. It has good blendability with fillers, colorability and molding processability.

The polarity of acetate increases elasticity and viscosity, decreases crystallinity and electrical properties, and is soluble in hydrocarbons and oils.

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