What are the advantages and disadvantages of rubber, and what are the advantages of rubber plastic a

The biggest feature of rubber is that it has the advantages of elasticity, wear resistance, cold resistance, and not easy to deflate.

These abilities of rubber are related to the properties of the molecules that make up rubber. Natural rubber is made up of thousands of isoprene molecules. Its molecular chain itself has the characteristics of softness and toughness, which is called flexibility.

Generally speaking, rubber with good flexibility has high elasticity and good wear and cold resistance. Some synthetic rubbers have special advantages because they have deliberately changed their molecular structure. For example, butyl rubber, which is made of isobutylene and a small amount of isoprene, has excellent air tightness due to the large number of methyl side chains in the molecule, which hinders the movement of the molecular chains.

In addition, the size of rubber molecules and whether the arrangement between molecules is neat will affect the performance of rubber. Generally speaking, the low molecular weight of rubber means that the elasticity is poor; The molecular weight is too large, and the rubber hardens. It is based on this relationship that chemists design and manufacture rubber with various properties.

The biggest disadvantage of rubber is that it is prone to aging. After a few years of use, a pair of rubber shoes will have many cracks, and the upper will become hard and brittle, and lack of elasticity. This is caused by the action of oxygen in the heated air and ultraviolet rays in the sun.

Therefore, rubber shoes are most afraid of the sun. Drying rubber shoes in the sun, on the one hand, heating the rubber shoes, on the other hand, the ultraviolet rays in the sun are like a pair of scissors, cutting the rubber molecular chain into small sections, so that the rubber reduces elasticity and tensile force.

Similarly, rubber products such as hot water bottles, adhesive tapes, and raincoats should not be used together with acids, alkalis, oils, etc. Because they can damage rubber products. Rubber shoes and raincoats should not be washed with boiling water, hot water, alkaline water, or soaked in soapy water for a long time.

After washing, the rubber products should be dried in a cool place, not in the sun, and not dried with fire.

1. Advantages: natural rubber: wear-resistant, easy to make preparations, and low degree of environmental pollution.

Synthetic rubber: there are many types, excellent performance in all aspects, imitation socks, with high elasticity, insulation, air tightness, oil resistance, high temperature or low temperature resistance and other properties. Synthetic rubber material and suitable for normal use between minus 60 degrees and 250 degrees. **Inexpensive.

2. Disadvantages. Natural rubber: limited production, high manufacturing cost, high use requirements, poor performance.

Synthetic rubber: not easy to decompose, great pollution to the environment. The tensile effect is relatively poor, and the tear strength and mechanical properties are also relatively poor.

His advantage is definitely that he is wear-resistant and elastic feet. Shortcoming. It's that the breathability of the foot is poor.

The disadvantages of high rubber content include the following:

1.Poor durability: Rubber with high glue content is softer and relatively easy to wear and age, resulting in a shorter service life.

2.Difficult processing: rubber with high glue content has strong viscosity and is not easy to process, so stricter control and more professional technology are required in the processing process.

3.High slow section: Because rubber with high glue content is relatively rarer, it is also relatively high.

4.Poor stability: Rubber with high glue content in potato hollow is prone to deterioration and decomposition under the influence of heat and humidity, which affects its use effect.

Therefore, in practical application, it is necessary to select and match rubber according to the specific use requirements and environment, comprehensively consider the rubber content and other performance parameters.

Advantages: rubber sole has good abrasion resistance, non-slip, elasticity, not easy to break, good softness, good elongation, stable shrinkage, good bendability, and waterproof. The rubber sole has high elasticity, high abrasion resistance, and can withstand multiple bending, stretching, compression without destruction, improving comfort and reaction speed.

It also has acid and alkali resistance, so it is suitable for wearing on rainy days.

Disadvantages: heavier, not corrosion-resistant, not hard, easy to be pierced; Poor air permeability and moisture absorption, afraid of oil soaking.

Categories of rubber soles:

Rubber soles are divided into two categories: natural rubber and synthetic ones, as a common material choice for shoe soles, natural rubber has the advantages of softness and good elasticity, suitable for most sports scenes; The synthetic rubber is more prominent in the strength and wear-resistant, even if it is bent and stretched many times, it will not cause great damage to the shoes.

Rubber sole safety shoes are generally used in the heavy industry, their weight is heavy, hot compression molding, and the bottom must be ground on the fitting surface when molding, and it is easy to shorten when heated, and the color is inconsistent.