Preparation method of hollow rod-shaped zinc borate

A zinc borate and rod-shaped technology is applied in the field of preparation of zinc borate, which can solve the problems of poor flame retardant performance, long reaction and aging time, complicated zinc borate process, etc., and achieves shortened reaction time, easy control, and controllable morphology. Effect

Active Publication Date: 2019-02-22
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the existing problems of complex process for preparing zinc borate, long time-consuming reaction and aging and poor flame retardancy, and provide a method for preparing hollow rod-shaped zinc borate

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  • Preparation method of hollow rod-shaped zinc borate
  • Preparation method of hollow rod-shaped zinc borate
  • Preparation method of hollow rod-shaped zinc borate

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specific Embodiment approach 1

[0021] Specific implementation mode one: the present implementation mode is the preparation method of hollow rod-shaped zinc borate, specifically completes according to the following steps:

[0022] 1. Mix boric acid, zinc oxide and deionized water evenly to obtain a mixed solution;

[0023] The volume ratio of the amount of boric acid described in step 1 to deionized water is (3mol ~ 5mol): (400mL ~ 700mL);

[0024] The volume ratio of the amount of zinc oxide described in step 1 to deionized water is 1mol:(400mL~700mL);

[0025] 2. Put the mixed solution into the hydrothermal reaction kettle, then raise the temperature of the hydrothermal reaction kettle to 100℃~160℃, and then magnetically stir at the temperature of 100℃~160℃ and the stirring speed of 30r / min~60r / min React for 0.5h to 4h to obtain the reaction solution; then quickly cool the hydrothermal reaction vessel to room temperature, remove the reaction solution, and then filter to obtain the reactant; wash the react...

specific Embodiment approach 2

[0033] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the rapid cooling of the hydrothermal reactor to room temperature in step 2 is performed by putting the hydrothermal reactor into a room temperature water bath for cooling. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0034] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the volume ratio of the amount of boric acid described in step 1 to deionized water is 3.5mol:(420mL~700mL). Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of hollow rod-like zinc borate, relates to a preparation method of zinc borate and aims to solve the problem that an existing zinc borate process is complicated, consumes long time for reaction and ageing and is poor in flame-retardant property. The preparation method comprises the steps that 1, boric acid, zinc oxide and deionized water are evenly mixed to obtain a mixed solution; 2, the mixed solution is put in a hydrothermal reaction kettle, hydrothermal reaction is performed under stirring, and then cleaning and drying are performed to obtain the hollow rod-like zinc borate. The prepared zinc borate by adopting the preparation method has a hollow rod-like structure and can increase the contact area between the zinc borate and a flame retardant and a flame retardant material when serving as an inorganic flame retardant material. By adding 1%-5% of zinc borate prepared in the flame retardant, the flame retardant performance of the inorganic flame retardant material can be effectively improved, namely the oxygen index is improved for 1-4 units, and the zinc borate is more suitable for development and application of the inorganic flame retardant material. The hollow rod-like zinc borate can be obtained by adopting the preparation method.

Description

technical field [0001] The invention relates to a preparation method of zinc borate. Background technique [0002] As an inorganic flame retardant, zinc borate has excellent properties such as non-toxicity, flame retardancy, smoke suppression and droplet prevention. Zinc borate is mainly composed of Zn, B, and O elements, and its structure is relatively complex. At present, the structure of zinc borate with a definite molecular formula is, for example, 2ZnO·3B 2 o 3 ·7H 2 O, 2ZnO 3B 2 o 3 ·3H 2 O, 3ZnO 5B 2 o 3 14H 2 O, 3ZnO 3B 2 o 3 3.5H 2 O, 6ZnO 5B 2 o 3 ·3H 2 O and ZnO·5B 2 o 3 4H 2 O et al. Since 1972, Nies successfully prepared 2ZnO·3B 2 o 3 3.5H 2 O and proved its flame retardant effect, after more than thirty years of development 2ZnO·3B 2 o 3 3.5H 2 The application of O gradually gained wide acceptance and became a widely used commodity. [0003] Zinc borate used as a flame retardant mainly includes 2ZnO·3B 2 o 3 3.5H 2 O and 4ZnO·B 2 o ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B35/12C08L23/06C08L23/08C08L51/06C08L53/02C08L23/12C08K7/24C08K3/22
CPCC01B35/127C01P2002/72C01P2004/03C01P2004/61C08K2201/003C08K2201/004C08L23/06C08L23/0853C08L23/12C08L53/025C08L2201/02C08L2201/22C08L2205/02C08L2205/03C08L2207/066C08L51/06C08K7/24C08K2003/2224C08L23/0815
Inventor 王春锋韩志东王继华王永亮
Owner HARBIN UNIV OF SCI & TECH
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