1,4-butanediol-terminated polybutylene succinate and preparation method thereof, and environment-friendly near-dry cutting oil prepared from polybutylene succinate

Abstract

The invention provides 1,4-butanediol-terminated polybutylene succinate and a preparation method thereof, and environment-friendly near-dry cutting oil prepared from the polybutylene succinate. The chemical formula of the polybutylene succinate is shown in the specification, wherein n is an integer no more than 50. The preparation method of the polybutylene succinate comprises the following steps: adding 1,4-butanediol and succinic acid into a polymerization kettle according to a mol ratio of 1:1, adding a strongly acidic cation exchange resin as a catalyst to perform polymerization reaction at 200-210 DEG C for 2-3 hours, then adding a certain proportion of 1,4-butanediol to perform end capping, removing water and the unreacted 1,4-butanediol under reduced pressure, and removing the strongly acidic cation exchange resin. The environment-friendly near-dry cutting oil comprises the following components: 70-80% of base oil of which the kinematic viscosity at 40 DEG C is no more than 50 mm<2> / s and 20-30% of 1,4-butanediol-terminated polybutylene succinate. The environment-friendly near-dry cutting oil provided by the invention has favorable extreme pressure antiwear property, lubricating property and cooling property; and when the environment-friendly near-dry cutting oil is used with a near-dry cutting and lubricating device, the consumption of lubricant can be reduced by more than 95%, thereby achieving remarkable energy saving and emission reduction effect.

Description

technical field [0001] The invention belongs to the technical field of lubrication, and in particular relates to a 1,4-butanediol-terminated polybutylene succinate, a preparation method thereof, and an environment-friendly quasi-dry cutting oil formulated with the polyester. Background technique [0002] The traditional metal cutting process uses mineral oil or vegetable oil or cutting fluid for a large amount of shower lubrication, the amount of lubricant used is large, and a large amount of extreme pressure and anti-wear components containing sulfur, phosphorus, chlorine, etc. It wastes resources, causes huge pollution of processing sites and the environment at the same time, and seriously affects the health of operating workers. Additives such as sulfur, phosphorus, and chlorine have a relatively large negative impact on the environment. Contents of the invention [0003] The purpose of the invention is to overcome the deficiencies in the prior art, to provide a kind of...

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Problems solved by technology

[0002] The traditional metal cutting process uses mineral oil or vegetable oil or cutting fluid for a large amount of shower lubrication, the amount of lubricant used is large, and a large amount of extreme pressure and anti-wear components containing sulfur, phosphorus, chlorine, etc. It is a waste of resources, and at the same time causes huge pollution of the processing site and the environment, and will seriously affect the health of the operators. Additives such as sulfur, phosphorus, and chlorine have a relatively large negative impact on the environment.

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