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Preparation method of PVC special-effect halogen-free flame retardant

A flame retardant and special-effect technology, which is applied in the preparation field of PVC special-effect halogen-free flame retardant, can solve the problems of product transparency, poor heat resistance, etc., and achieve the effect of good flame retardancy and heat resistance

Pending Publication Date: 2022-03-18
卢韩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the existing technology has disclosed that some halogen-free flame-retardant PVC materials have good flame-retardant and mechanical properties, but they have a certain impact on the transparency of the finished product, and the heat resistance is poor, and there is still room for further improvement in its related properties.

Method used

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  • Preparation method of PVC special-effect halogen-free flame retardant

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] This embodiment provides a technical solution: a preparation method of PVC special-effect halogen-free flame retardant: step 1, put 50 kg of magnesium-based materials into the reaction kettle, and the magnesium-based materials are obtained by low-cost magnesite hydration method;

[0020] Step 2: Add 1 kg of phosphorus-containing polysiloxane DVP into the reaction kettle, raise the temperature to 80°C, add a 5% tetramethylammonium hydroxide aqueous soluti...

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Abstract

The invention discloses a preparation method of a PVC special-effect halogen-free flame retardant. The preparation method comprises the following steps: adding a magnesium material into a reaction kettle; the preparation method comprises the following steps: adding phosphorus-containing polysiloxane DVP into a reaction kettle, adding a tetramethylammonium hydroxide aqueous solution and hexamethyldisilane, titrating and flocculating to remove unreacted raw materials, water and tetramethylammonium hydroxide, filtering and drying to obtain slightly yellow transparent solid powder; putting the fixed powder into a jet mill experiment machine, and putting the ultrafine crushed raw material into a high-speed surface treatment machine; 3-aminopropyl methyl dimethoxy silane is added, and the mixture enters a stock bin after being qualified; the halogen-free gas barrier powder material and the material in the stock bin are mixed according to the mass ratio of 1: 5 and put into a zero-gravity mixing machine, and finally the mixture is packaged by a packaging machine; the invention has the advantages that: organic silicon molecules accelerate surface carbon formation, improve gas barrier property and effectively improve the flame retardant property of the finished product, the refractive index is close to that of pure PVC resin, the transparency of the finished product is hardly influenced, and the heat resistance is good.

Description

technical field [0001] The invention relates to the technical field of flame retardant preparation, in particular to a preparation method of PVC special-effect halogen-free flame retardant. Background technique [0002] Flame retardant science and technology is a science developed to meet the needs of social safety production and life, prevent fires, and protect people's lives and property. It is a substance that can increase the flame resistance of polymer materials, and is mainly used in polymer materials such as plastics. , rubber, fiber, etc., and most of these materials are combustible, especially plastics. To apply them in transportation, construction, electrical equipment, aviation, spaceflight, etc., it is urgent to solve the problem of their combustion resistance. [0003] At present, the prior art has disclosed that some halogen-free flame-retardant PVC materials have good flame-retardant and mechanical properties, but they have a certain impact on the transparency...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L83/08C08K9/06C08K3/22C08K9/04C08K3/34
CPCC08L27/06C08L2201/02C08L2201/22C08K2003/2224C08L83/08C08K9/06C08K3/22C08K9/04C08K3/346
Inventor 卢韩
Owner 卢韩
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