Thermostable lubrication reinforcing agent used for polyvinyl chloride profiles and its preparation method

A polyvinyl chloride and heat stabilization technology, applied in the field of composition and preparation of heat stabilizers, can solve the problems of poor quality, low grade, flying lead salt dust, etc., and achieves large capacity, less precipitation and good production stability. Effect

Inactive Publication Date: 2012-05-30
刘连生
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Domestic production of dust-free composite lead-salt stabilizers has not started since the 1980s. Although this stabilizer has solved the problem of flying lead-salt dust, the design concept has not deviated from the traditional three-sal

Method used

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Examples

Experimental program
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Embodiment Construction

[0050] (1) Take each component according to the following process proportioning:

[0051] Stearic acid 153Kg Salicylic acid 8.18Kg Diethylene glycol 24.55Kg

[0052] Huang Dan 525Kg Paraffin 82.7Kg Glacial acetic acid 1.9Kg

[0053] Cyanuric acid 60Kg Xylene 5.54Kg.

[0054] (2) Put 12.55Kg of stearic acid and 4.45Kg of diethylene glycol into the reactor, start stirring and heating, condense and collect the water vapor escaping from the reactor when the temperature in the reactor rises to 140-150°C, Control the temperature rise rate in the reactor to 10°C / H. When the reaction is about 5-6 hours, the temperature in the reactor is 185-19 °C and no water vapor escapes, stop heating, cool the material to below 100 °C, filter and discharge the material as auxiliary agent 1;

[0055] (3) Put 6.88Kg of stearic acid, 8.18Kg of salicylic acid, and 6.24Kg of diethylene glycol into the reactor, start stirring and heating, and condense and collect it from the reactor when the temperature...

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Abstract

The invention discloses a thermostable lubrication reinforcing agent used for processing polyvinyl chloride profiles and its preparation method. The reinforcing agent is prepared by the following raw materials (w/w): 12.98-25.97% of eleaostearic acid, 0.55-1.09% of salicylic acid, 1.03-2.06% of diethylene glycol, 33.61-67.22% of yellow lead, 6.75-13.50% of paraffin, 0.13-0.25% of glacial acetic acid, 4.58-9.17% of cyanuric acid, and 0.37-0.73% of xylene. The preparation method comprises: taking a technological amount of eleaostearic acid, salicylic acid, diethylene glycol, and xylene respectively to prepare an auxiliary agent 1, an auxiliary agent 2 and an auxiliary agent 3; taking a technological amount of yellow lead, eleaostearic acid and paraffin to prepare an intermediate; and making the rest yellow lead with glacial acetic acid and cyanuric acid into a synthetic material; making the prepared auxiliary agent 1, part of the prepared intermediate, and the synthetic material into a composite material; mixing the composite material, the rest intermediate, as well as the rest of the auxiliary agent 1, the auxiliary agent 2, the auxiliary agent 3 and the eleaostearic acid in a kneading machine, then conducting extrusion moulding.

Description

technical field [0001] The invention relates to a thermally stable lubrication enhancer for polyvinyl chloride profiles, including the composition and preparation method of the thermal stabilizer. Background technique [0002] Polyvinyl chloride is also called PVC. Its molecules are relatively polar molecules. Due to the large intermolecular force, its softening temperature and melting temperature are high, and its glass transition temperature is high. Therefore, it generally needs to be heated to above 150-160°C. In order to make it plasticized, the processing temperature is usually between 160 and 210 °C. However, PVC resin is extremely unstable to heat. It is easy to degrade and dehydrochloride at the processing temperature. This reaction causes PVC to produce polyene sequences of colored conjugated double bonds, resulting in discoloration, brittleness and corrosion of equipment. In severe cases, it will make processing impossible. [0003] In order to inhibit the dehyd...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K11/00
Inventor 刘连生
Owner 刘连生
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