1. Latex is a milky white flowing liquid that looks like milk. Latex is a biosynthetic product. Due to differences in tree species, geology, climate and other related conditions, its composition and colloidal structure varies greatly.
2. Rubber is a natural polymer compound with polyisoprene as its main component. It is 93% composed of rubber hydrocarbons, the rest is protein. Natural rubber is the most widely used general purpose rubber.
Secondly, the uses are different:
1. Latex is a liquid that flows out of the rubber tree when it is knocked. It is milky and ammonia and other stabilizers are usually added to prevent natural latex from curing due to microbes and enzymes.
2. Rubber is the basic raw material of the rubber industry and is widely used in the manufacture of tires, hoses, tapes, cables and other rubber products. It is an important material, equivalent to metal, chemical fiber and plastic.
Third, the usage is different:
1.Common latex products:sponges, gloves, pacifiers, rubber hoses.
2. Common rubber products:tires, basketballs, ping-pong paddles.
Extended Information:
Latex Properties
1. Concentration
The concentration of latex is expressed in terms of total solids content and dry gel content. Dry gel content is the amount of dry gel in the latex, while total solids content is the amount of all solids in the latex after removing water and volatile components, expressed as a percentage.
2. Relative Density
The relative density of fresh latex is about 0.96-0.98, which is determined by the relative densities of whey (1.02) and rubber hydrocarbon (0.9064). The rubber hydrocarbon content of the latex can be approximated from the relative density. The higher the rubber content, the lower the relative density of the latex, as shown in the table.
3. Viscosity
The viscosity of fresh latex with a total solids content of about 35% is about 12-15 MPa-s, and varies considerably with time of collection and other factors. Generally, the viscosity of latex with high total solid content is high, but the viscosity of latex with the same total solid content will be relatively different due to the different storage methods, storage time and particle size.
4. ph value
The PH value of latex has a great influence on its stability. Fresh latex is neutral and slightly alkaline, PH value of 7~7.2. After a few hours to a dozen hours, due to the influence of bacteria and enzymes in the latex, the PH value will be reduced, become acidic, resulting in coagulation. For this reason, ammonia or other alkali is often added to raise the PH value to 10~10.5 for long-term preservation.