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Anti-corrosion plastic filling master batch special for underground tubular product and preparing method

A technology of corrosion resistance and filling masterbatch, applied in the field of plastic masterbatch, can solve the problems of poor corrosion resistance, difficulty in high addition amount, etc., and achieve the effects of easy availability of raw materials, reduced surface energy, and excellent corrosion resistance

Inactive Publication Date: 2019-11-15
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the defects that the existing calcium carbonate is difficult to use in high dosage and has poor corrosion resistance in the application of plastic filler masterbatch, the present invention provides a kind of corrosion-resistant plastic filler masterbatch for underground pipes and its preparation method

Method used

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  • Anti-corrosion plastic filling master batch special for underground tubular product and preparing method
  • Anti-corrosion plastic filling master batch special for underground tubular product and preparing method
  • Anti-corrosion plastic filling master batch special for underground tubular product and preparing method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] (1) Disperse graphite powder, sodium silicate, water, and nano-calcium carbonate into a slurry with a mass ratio of 3:0.5:30:15, grind it in a sand mill for 15 minutes, and then dry it with a high-pressure pump nozzle at a high pressure of 2MPa. The nozzle temperature is 200°C to obtain modified nano-calcium carbonate;

[0034] (2) Add a modifying agent to the modified nano-calcium carbonate obtained in step (1), and stir to make the modifying agent infiltrate the micropores on the surface of the calcium carbonate to obtain surface-infiltrated calcium carbonate; the modifying agent is oleic acid; the stirred The speed is 50r / min, and the time is 15min;

[0035] By mass percentage, modified nano-calcium carbonate 95%, modifier 5%;

[0036](3) First mix the surface-impregnated calcium carbonate obtained in step (2) with the high melting point polymer at a high temperature of 200°C, stir it into a slurry, then filter the plate, and then condense and pelletize to obtain a ...

Embodiment 2

[0039] (1) Disperse graphite powder, sodium silicate, water, and nano-calcium carbonate into a slurry with a mass ratio of 3:0.5:30:15, grind it in a sand mill for 15 minutes, and then dry it with a high-pressure pump nozzle at a high pressure of 1MPa. The nozzle temperature is 200°C to obtain modified nano-calcium carbonate;

[0040] (2) Add a modifier to the modified nano-calcium carbonate obtained in step (1), and stir to make the modifier infiltrate the micropores on the surface of the calcium carbonate to obtain surface-infiltrated calcium carbonate; the modifier is linoleic acid; stir The rotating speed is 100r / min, and the time is 10min;

[0041] By mass percentage, modified nano-calcium carbonate 97%, modifier 3%;

[0042] (3) First mix the surface-impregnated calcium carbonate obtained in step (2) with the high melting point polymer at a high temperature of 150°C, stir to form a slurry, then filter the plate, and then condense and cut into pellets to obtain a corrosi...

Embodiment 3

[0045] (1) Disperse graphite powder, sodium silicate, water, and nano-calcium carbonate into a slurry with a mass ratio of 3:0.5:30:15, grind it in a sand mill for 10 minutes, and then dry it with a high-pressure pump nozzle at a high pressure of 1MPa. The nozzle temperature is 230°C to obtain modified nano-calcium carbonate;

[0046] (2) adding a modifying agent to the modified nano-calcium carbonate obtained in step (1), stirring, so that the modifying agent infiltrates the micropores on the surface of the calcium carbonate to obtain surface-infiltrated calcium carbonate; the modifying agent is a diphosphate ester salt; The stirring speed is 70r / min, and the time is 12min;

[0047] By mass percentage, modified nano-calcium carbonate 98%, modifier 2%;

[0048] (3) First mix the surface-impregnated calcium carbonate obtained in step (2) with the high melting point polymer at a high temperature of 180°C, stir into a slurry, then filter the plate, and then condense and cut into...

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Abstract

The invention relates to the technical field of plastic master batches, and discloses an anti-corrosion plastic filling master batch special for an underground tubular product and a preparing method.The method includes the following steps of firstly, dispersing graphite powder, sodium silicate, water and nano calcium carbonate into slurry according to the mass ratio of 3:0.5:30:15, grinding the slurry for 10-15 minutes in a grinder, and drying the slurry through a high-pressure pump spraying nozzle to obtain modified nano calcium carbonate; secondly, mixing surface-infiltration calcium carbonate with a high-melt-flow-index polymer into slurry, filtering the slurry through a filtering plate, and conducting condensing and pelletizing to prepare the anti-corrosion plastic filling master batch special for the underground tubular product. The prepared filling master batch has excellent corrosion resistance to acid and alkali, can be easily dispersed in a plastic product, can use a high addition amount of calcium carbonate and meanwhile is simple in preparing process and low in cost.

Description

technical field [0001] The invention relates to the technical field of plastic masterbatch, and discloses a special corrosion-resistant plastic filling masterbatch for buried pipes and a preparation method thereof. Background technique [0002] Calcium carbonate can play a skeleton role in plastic products, which has a great effect on the dimensional stability of plastic products, can also improve the hardness of products, and improve the surface gloss and surface smoothness of products. Since the whiteness of calcium carbonate is above 90%, it can also replace expensive white pigments. Due to its low price and excellent product performance, it can not only reduce the raw material cost of plastic products, save synthetic resin, and bring economic benefits to enterprises, but also has the characteristics of improving the physical properties of plastic products and improving processing efficiency, so it is the fastest growing in recent years. Plastic fillers have become an im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K9/04C08K3/26C08K3/04C08K3/34C08J3/22
CPCC08J3/226C08J2323/08C08K3/04C08K3/34C08K9/04C08K2003/265C08K2201/011
Inventor 陈庆曾军堂
Owner CHENDU NEW KELI CHEM SCI CO LTD