Formula and manufacturing method for migration-free odorless natural reclaimed rubber

Abstract

The invention provides a formula for migration-free odorless natural reclaimed rubber, which belongs to the field of rubber. The manufacturing method comprises the following steps: on the basis of 100 parts of natural rubber powder, weighing and mixing the natural rubber powder, an activator 480, YNT800, naphthalene and sodium bicarbonate; adding the mixed substances into a desulphurization tank, heating the desulphurization tank to 200 DEG C, maintaining the temperature for about 120 min, releasing gas every half an hour, and maintaining a pressure of 2.5 MPa for 30 min under the condition of a temperature of 200 DEG C; after completion of desulphurization, carrying out batching off; and then carrying out performance detection. The invention has the following advantages: naphthalene exerts activation effect in the preparation of the reclaimed rubber, can improve the physical properties of the reclaimed rubber and enables the phenomenon of migration not to occur; sodium bicarbonate is used for neutralizing acidic gas produced in the process of desulphurization; and with the formula containing naphthalene and YNT800, all the performance indexes of the reclaimed rubber meet standard requirements, and the reclaimed rubber is free of migration on its surface and free of odor.

Description

technical field [0001] The invention relates to the technical field of reclaimed rubber, in particular to a non-migration, odorless natural regenerated rubber formula and a preparation method thereof. Background technique [0002] Due to the low cost, natural reclaimed rubber has a wide range of applications in the rubber industry. Vegetable oils such as pine tar or mineral oils such as aromatic oil are generally used in the softening system in traditional natural reclaimed rubber production technology. The use of pine tar oil has excellent physical properties, but it has a strong odor and cannot be used in many occasions; the use of aromatic oil has no odor, but its strength and elongation can be used, and the reclaimed rubber turns yellow and migrates on the surface. Contents of the invention [0003] Aiming at the deficiencies of the existing natural regenerated rubber technology, the purpose of the present invention is to solve the defects that the use of pine tar and...

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Problems solved by technology

[0003] Aiming at the deficiencies of the existing natural regenerated rubber technology, the purpose of the present invention is to solve the defects that the use of pine tar and other vegetable oils has a strong odor, the use of aromatic oils migrates, and the physical properties are not high during the manufacturing process of reclaimed rubber, and provides a non-migration, odorless natural rubber. Reclaimed rubber formula and its production method

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