A kind of layered composite metal hydroxide and its multifunctional masterbatch preparation method

A composite metal and hydroxide technology, applied in the field of chemical materials, can solve the problems of high raw material consumption, raw material cost, freight and labor costs, affecting the health of workers, and excessive dust in the workplace, achieving less raw material consumption and product quality. The effect of stability and reduced work difficulty

Active Publication Date: 2018-04-24
北京泰克来尔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In this method to prepare hydrotalcite, because industrial aluminum chloride AlCl 3 9H 2 O, aluminum sulfate Al 2 (SO 4 ) 3 18H 2 O, aluminum nitrate Al(NO 3 ) 3 9H 2 O contains a large amount of crystal water, resulting in the use of about 5 tons of solid raw materials in the industrial production of 1 ton of hydrotalcite. The amount of raw materials, raw material costs, freight and labor costs are high, and the yield is low.
The obtained hydrotalcite powder is easy to fly, has strong water absorption, and is easy to adhere to the metal surface under wet conditions; due to the large specific surface area, it is not easy to disperse in the matrix resin; When processing molecular materials, high moisture content will cause air bubbles, which will affect its use
When hydrotalcite is added to polymer materials, it is easy to remove interlayer moisture during thermal processing, resulting in discoloration and unstable performance.
[0005] And dry powdered hydrotalcite as an additive has a lot of dust flying in the production and application, which is easy to cause excessive dust in the workplace, seriously affects the health of the staff, and will pollute the ecological environment

Method used

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  • A kind of layered composite metal hydroxide and its multifunctional masterbatch preparation method
  • A kind of layered composite metal hydroxide and its multifunctional masterbatch preparation method
  • A kind of layered composite metal hydroxide and its multifunctional masterbatch preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] This embodiment relates to a preparation method of nano-layered composite metal hydroxide:

[0038] The first step is to prepare magnesium ion aqueous solution. Dissolve 74.55Kg of industrial magnesium sulfate into 400Kg of deionized water, mix and prepare to obtain a magnesium ion aqueous solution with a concentration of 0.75mol / L;

[0039] The second step is to prepare an alkaline solution of aluminum. 8.54Kg sodium metaaluminate, 8.33Kg sodium hydroxide and 21.24Kg Na 2 CO 3 Dissolved in 400Kg deionized water, mixed and prepared to obtain an alkaline solution of aluminum with a concentration of 0.25mol / L;

[0040] The third step is to add the aluminum alkali solution and the magnesium ion aqueous solution in equal proportions to the high-shear dispersing emulsifier under the premise of volumetric metering, and mix quickly and uniformly.

[0041] In the fourth step, the suspension formed by the high-shear dispersing and emulsifying machine is passed into the close...

Embodiment 2

[0046] The first step is to prepare a mixed aqueous solution of magnesium and zinc ions. Dissolve 77Kg of industrial zinc nitrate hexahydrate and 30Kg of industrial zinc nitrate hexahydrate into 500Kg of deionized water, mix and prepare to obtain a mixed aqueous solution of magnesium and zinc ions;

[0047] The second step is to prepare an alkaline solution of aluminum. Dissolve 17.08Kg of sodium metaaluminate, 12.5Kg of sodium hydroxide and 42.48Kg of sodium carbonate into 500Kg of deionized water, mix and prepare to obtain an alkaline solution of aluminum with a concentration of 0.4mol / L;

[0048] In the third step, the above-mentioned aluminum alkali solution and the mixed aqueous solution of magnesium and zinc ions are added to the colloid mill in equal proportions under the premise of volumetric measurement, and mixed rapidly and uniformly.

[0049] The fourth step is to pass the suspension formed by the colloid mill into the reaction kettle. The temperature was raised ...

Embodiment 3

[0054] The mass percentages of each component of the masterbatch are: 43% polyethylene, 40% nano-layered composite metal hydroxide obtained in Example 1, 5% maleic anhydride grafted polyethylene, 4% white oil, silicone 1%, EBS 2%, stearic acid 2%, calcium stearate 1%, 3-propylene oxide 2%.

[0055] Add the nano-layered composite metal hydroxide, 3-propylene oxide, and dispersant prepared in Example 1 into a high-speed mixer and mix for 5 minutes to obtain a pre-dispersion. The maleic anhydride grafted polyethylene, polyethylene and pre-dispersion were respectively added to the internal mixer for mixing, and the materials obtained by mixing at 160°C for 15 minutes were cooled to 30°C and discharged. The mixed materials are added to twin-screws for melt blending, extruded and granulated to obtain multifunctional masterbatches. The twin-screw processing temperatures are 145, 155, 160, 170, 175, 165, 170, and 180°C, respectively.

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Abstract

The invention discloses laminated composite metal hydroxide and a multifunctional master batch preparation method thereof. According to the multifunctional master batch preparation method, first sodium metaaluminate NaAlO2, NaOH, a Na2CO3 alkali solution and a bivalent metal salt solution are used as raw materials to perform reaction under high temperature and high pressure, then the product obtained through the reaction is subjected to surface modification to obtain composite metal hydroxide powder with a modified laminated structure, and then the powder is compounded with a high polymer material to prepare functional master batches. The multifunctional master batches prepared by means of the method include 30-80 parts by mass of nano laminated composite metal hydroxide, 15-65 parts by mass of carrier resin, 3-epoxy propane, a dispersant and a processing agent. The master batches prepared by means of the method are good in dispersing performance, have good suitability with different resin matrixes and good compatibility and do not affect the mechanical properties of a matrix material. In addition, when the master batches are added into different plastic products, the master batches can have the multiple functions of acid absorption, thermal stability, flame retardance and smoke suppression, infrared absorption and the like, are low in price and are environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and in particular relates to a preparation method of a layered composite metal hydroxide and a multifunctional master batch thereof. Background technique [0002] The functionalization and performance improvement of polymer materials, such as thermal stability, flame retardancy and smoke suppression, usually adopt the method of adding functional material additives. Due to the requirements of environmental protection, traditional halogen-containing flame retardants and lead-containing heat stabilizers have been gradually restricted in use. Layered composite metal hydroxides have tightly combined hydroxide layers and anions between the layers, commonly known as hydrotalcites. Its more prominent chemical properties are reversible anion exchange and thermal decomposition properties. Because of its special properties, it is widely used as a heat stabilizer, flame retardant, acid absorber a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L27/06C08L23/12C08L67/02C08L23/08C08L77/02C08L55/02C08K13/06C08K9/04C08K3/22C08K3/26
CPCC08K2201/011C08L23/06C08L23/0853C08L23/12C08L27/06C08L55/02C08L67/02C08L77/02C08L2201/02C08L2201/08C08L2205/03C08L2205/035C08L51/06C08L91/06C08K13/06C08K9/04C08K3/22C08K3/26C08L23/286C08L33/04C08L91/00
Inventor 邢颖宿磊
Owner 北京泰克来尔科技有限公司
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