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A method for adjusting the surface tension of polybutadiene super-large particle size latex

A technology of polybutadiene and surface tension, which is applied in the field of engineering plastics production, can solve the problems of damaging the stability of latex, achieve the effect of short residence time and ensure stability

Active Publication Date: 2017-07-14
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional methods are powerless and will damage the stability of latex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 5000 grams, the total solid content is 30%, the surface tension is 29.0mN / m 2 The polybutadiene super-large particle size (about 600nm) latex is added to the storage tank, and the tank is filled with deionized water. The temperature of the deionized water is 15°C, and the temperature of the latex is 15°C. Start the latex circulation pump and pump the latex into the tubular tank. In the membrane separator, the membrane separator is a tubular inorganic material SPG membrane. Circulate the latex, changing the deionized water every half hour. After 5 hours, the surface tension of polybutadiene latex with ultra-large particle size (about 600nm) rose to 31.2, the total solid content remained at 30%, and the latex had good stability.

Embodiment 2

[0020] 5000 grams, the total solid content is 28%, the surface tension is 28.2mN / m 2 The polybutadiene super large particle size (about 600nm) latex is added to the storage tank, and the tank is filled with deionized water. The temperature of the deionized water is 25°C, and the temperature of the latex is 25°C. Start the latex circulation pump and pump the latex into the tubular In the membrane separator, the membrane separator is a tubular inorganic material SPG membrane. Circulate the latex and change the deionized water every half hour. After 4 hours, the surface tension of polybutadiene super-large particle size (about 600nm) latex rose to 30.3, the total solid content remained at 28%, and the latex had good stability.

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Abstract

The invention relates to a method for adjusting the surface tension of polybutadiene super-large particle latex; it is characterized in that polybutadiene super-large particle latex is added to a storage tank, and pumped into a tubular membrane separator through a pump, and the membrane is separated The device is arranged in the water tank, the outside of the tube is deionized water, and the inside of the tube is the circulating latex material. The latex returns to the storage tank after passing through the membrane separator. There is a constant temperature device in the water tank. The temperature of the latex is 15°C to 25°C, and the deionized water is replaced regularly every half an hour; the invention not only ensures the stability of the latex with super-large particle size of polybutadiene, but also ensures that the reverse osmosis can be performed rapidly and repeatedly.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of engineering plastics production, and in particular relates to a method for surface tension of polybutadiene latex with super large particle size (about 600nm). Background technique [0003] ABS resin is one of the five major synthetic resins. It has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties. It also has the characteristics of easy processing, stable product size, and good surface gloss. It is easy to paint. , coloring, and secondary processing such as surface metal spraying, electroplating, welding, hot pressing and bonding, etc. It is widely used in industrial fields such as machinery, automobiles, electronic appliances, instrumentation, textiles and construction. Wide range of thermoplastic engineering plastics. [0004] Plastic ABS resin is currently the polymer with the largest output and the most widely used. It or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F6/16C08C1/00C08C1/04
Inventor 殷兰庞建勋孙继德王秀芝李正张秀玲
Owner PETROCHINA CO LTD