Preparation method of flame retardant type separant

A kind of isolation agent, flame retardant technology, applied in the field of preparation of functional isolation agent, to achieve the effect of not easy to spontaneous combustion

Active Publication Date: 2013-06-19
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that spontaneous combustion is easily caused during the storage and transportation of powdered rubber, and provides a preparation method of a flame-retardant release agent. The synthesized release agent with flame-retardant The agent is evenly coated on the surface of the powder rubber, and the flame retardant group is also evenly distributed on the surface of the powder rubber particles, thus endowing the powder rubber with a certain flame retardant performance, thereby ensuring the safety of the storage and transportation process

Method used

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  • Preparation method of flame retardant type separant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 10mol monoenyl octadecanoic anhydride and 20mol CCl to the reactor 4 Stir to mix evenly, add 0.1mol of (PhCO 2 ) 2 Initiator, control the reaction temperature at 40°C, add 5% (w) NaOH solution to the reactor after reacting for 60 minutes to adjust the pH of the reaction solution to 8.5, and stir for 20 minutes to obtain a spacer for use. Get 500g of 20% (w) styrene-butadiene latex, add 40g of the aforementioned release agent, stir to make it evenly mixed, then add 50g of CaCl 2 Coagulation is carried out, the temperature of the coagulation tank is controlled at 40°C, and the obtained slurry is washed and dried to obtain powdered rubber. The oxygen index is 23.5%, which is flame retardant.

Embodiment 2

[0029] Add 10mol dienyl octadecanoic anhydride and 1molCCl to the reactor 4 Stir and mix evenly, add 0.05mol of (PhCO 2 ) 2 As an initiator, control the reaction temperature at 30°C, add 50% (w) NaOH solution to the reactor after reacting for 30 minutes to adjust the pH of the reaction solution to 8.5, and stir for 6 minutes to obtain a spacer for use. Take 500g of 20% (w) styrene-butadiene latex, add 10g of the aforementioned release agent, stir to make it evenly mixed, add 200g of CaCl 2 Coagulation is carried out, the temperature of the coagulation tank is controlled at 45°C, and the obtained slurry is washed and dried to obtain powdered rubber. The oxygen index is 24.8%, which is flame retardant.

Embodiment 3

[0033] Add 10mol triene octadecanoic anhydride and 60mol CCl to the reactor 4 Stir and mix evenly, add 0.3mol of (PhCO 2 ) 2 As an initiator, control the reaction temperature at 90°C, add 25% (w) NaOH solution to the reactor after 180 minutes of reaction to adjust the pH of the reaction solution to 8.9, and stir for 120 minutes to obtain a spacer for use. Get 500g of 20% (w) natural rubber latex, add 200g of the aforementioned release agent, stir to make it evenly mixed, add 10g of CaCl 2 Coagulation is carried out, the temperature of the coagulation tank is controlled at 55° C., and the obtained slurry is washed and dried to obtain powdered rubber. The oxygen index is 25.8%, which is flame retardant.

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Abstract

Aiming at spontaneous combustion caused by improper dispose in storage and transportation of powder rubber, the invention provides a preparation method of a flame retardant type separant. The method is as below: conducting an addition reaction on a halogen donor of carbon tetrachloride and a halogen acceptor of unsaturated fatty acid, and saponifying by a sodium hydroxide aqueous solution, so as to prepare the separant with flame retardant function. The flame retardant type separant can be used in condensation process of rubber latex and preparation of powder rubber product with flame retardance, and can guarantee safety of product storage and transportation process.

Description

technical field [0001] The invention relates to a preparation method of a functional release agent, in particular to a preparation method of a release agent with flame retardant function and suitable for powder rubber preparation. Background technique [0002] The preparation methods of powder rubber mainly include mechanical pulverization, spray drying and coagulation coating. All three methods need to use a release agent. The function of the release agent is to prevent the surface of the rubber particles from sticking. It is mainly divided into two categories: inorganic substances and inorganic substances. etc.; organic matter, such as: polymer resin, divalent fatty acid salt, etc. Whether it is an inorganic release agent or an organic release agent, it only plays the role of isolation and anti-adhesion in the production process of powder rubber, and no literature report has been found that the release agent has flame retardancy. [0003] At present, the flame retardant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/41C07C53/19C08C1/14C08K5/098C08L9/06C08L9/02C08L7/00C08L9/00
Inventor 艾纯金赵旭涛郑聚成龚光碧徐典宏朱晶魏绪玲赵洪国赵志超梁滔李晶李树毅刘超伟高阳光何颖李波康安福
Owner PETROCHINA CO LTD
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