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Plastic lubricant and preparation method thereof

A lubricant and plastic technology, which is applied in the field of plastic lubricant and its preparation, can solve the problems of not meeting the requirements of plastic molding processing, poor plastic fluidity and mold release, and single product performance, so as to achieve the reduction of comprehensive production cost and reduction of The effect of low friction and raw material cost

Active Publication Date: 2016-09-21
GUANGZHOU CARDLO BIOCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, internal lubricants mainly use fatty acid esters and alcohols, such as fatty acids, fatty alcohols, soybean oil, polyethylene wax, etc., as raw materials, and are processed to obtain internal lubricants. The product structure of these internal lubricants is relatively simple. Single, can no longer meet the requirements of plastic molding processing
Therefore, those skilled in the art try to compound various esters, alcohols and acids to prepare internal lubricants. For example, Chinese patent application 103012995A discloses a compound made of hydroxystearic acid, pentaerythritol stearate, stearyl alcohol and The composite lubricant composed of fatty acid has both internal and external lubrication effects, but its formula is relatively complicated, the cost is high, and it is poor in improving plastic fluidity and mold release

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, plastic lubricant of the present invention and its preparation

[0020] Prescription: glyceryl tristearate 100kg, pentaerythritol stearate 60kg and low-density polyethylene 30kg; Described pentaerythritol stearate is the composition of pentaerythritol monostearate and pentaerythritol distearate, and described The weight ratio of pentaerythritol monostearate and pentaerythritol distearate is 1:2.

[0021] Preparation method: weigh glyceryl tristearate, pentaerythritol stearate and polyethylene according to the formula, first put glyceryl tristearate into a high-speed shear mixer, and add glyceryl tristearate by weight 1 % isopropyl tris(dioctylpyrophosphate acyloxy) titanate, reacted at 100°C for 20min; then put pentaerythritol stearate, and gradually heated up to 120°C under nitrogen protection and negative pressure of 0.03MPa, and kept React for 20 minutes; continue to add polyethylene, under the protection of nitrogen and negative pressure of 0.03MPa, h...

Embodiment 2

[0022] Embodiment 2, plastic lubricant of the present invention and preparation thereof

[0023] Prescription: glyceryl tristearate 120kg, pentaerythritol stearate 80kg and low-density polyethylene 50kg; Described pentaerythritol stearate is the composition of pentaerythritol monostearate and pentaerythritol distearate, and described The weight ratio of pentaerythritol monostearate and pentaerythritol distearate is 1:3.

[0024] Preparation method: weigh glyceryl tristearate, pentaerythritol stearate and polyethylene according to the formula, first put glyceryl tristearate into a high-speed shear mixer, and add glyceryl tristearate after dissolving. % isopropyl tris(dioctyl pyrophosphate acyloxy) titanate, reacted at 100°C for 30min; then put pentaerythritol stearate, gradually heated up to 130°C under nitrogen protection and negative pressure of 0.05MPa, and kept React for 30 minutes; continue to add polyethylene, under the protection of nitrogen and negative pressure of 0.0...

Embodiment 3

[0025] Embodiment 3, the plastic lubricant of the present invention and its preparation

[0026] Prescription: glyceryl tristearate 120kg, pentaerythritol stearate 60kg and low-density polyethylene 30kg; Described pentaerythritol stearate is the composition of pentaerythritol monostearate and pentaerythritol distearate, and described The weight ratio of pentaerythritol monostearate and pentaerythritol distearate is 1:2.

[0027] Preparation method: weigh glyceryl tristearate, pentaerythritol stearate and polyethylene according to the formula, first put glyceryl tristearate into a high-speed shear mixer, and add glyceryl tristearate after dissolving. % isopropyl tris(dioctyl pyrophosphate acyloxy) titanate, reacted at 100°C for 20min; then put pentaerythritol stearate, gradually heated up to 130°C under nitrogen protection, negative pressure 0.03MPa, and kept warm React for 30 minutes; continue to add polyethylene, under the protection of nitrogen and negative pressure of 0.03...

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Abstract

Belonging to the technical field of plastics, the invention in particular relates to a plastic lubricant and a preparation method thereof. The plastic lubricant provided by the invention is prepared from the following raw materials: 100-120 parts of glyceryl tristearate, 60-80 parts of pentaerythrityl tetrastearate and 30-50 parts of polyethylene. The plastic lubricant provided by the invention can effectively improve plastic lubricity, reduce friction and lower the interface adhesion performance, improves fluidity and demoulding properties in plastic processing and the like, prevents the formation of fisheyes and other defects due to adhesion in a machine or mold, at the same time, the raw material cost is low, and the preparation method is simple.

Description

technical field [0001] The invention belongs to the technical field of plastics, and in particular relates to a plastic lubricant and a preparation method thereof. Background technique [0002] With the continuous development of plastic processing technology at home and abroad and the extensive application of plastic processing equipment, in order to increase the processing speed, reduce energy consumption, and improve the quality of plastic products, especially the apparent quality, the variety and quantity of plastic lubricants have been developed rapidly. . As an important additive in plastic processing, plastic lubricants are used to endow plastics with lubricity to reduce harmful friction and prevent product interface adhesion. There are many kinds of plastic lubricants. According to the lubricating effect of lubricants, they are divided into internal lubricants (fatty acid esters and alcohols, etc.), external lubricants (metal soaps, higher fatty acids, fatty amides a...

Claims

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Application Information

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IPC IPC(8): C08K5/103C08L23/06
CPCC08K5/103C08K2201/014C08L2207/066C08L23/06
Inventor 徐怀义闵菊平陈昊民刘惠敏邵磊蔡名柳
Owner GUANGZHOU CARDLO BIOCHEM TECH
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