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Nano-modified flame-retardant phenolic injection molding material and preparation method thereof

A nano-modification and injection molding technology, which is applied in the field of phenolic injection molding, can solve problems such as high production cost, impact on injection molding performance, and application field limitations, and achieve outstanding flame retardant effects, improved dispersion performance, and low pollution.

Active Publication Date: 2015-07-01
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, due to the existence of clay, the loss of production equipment is large, and the organic clay itself requires a certain cost, and the price of this type of material may not be competitive.
In addition, its injection molding performance will be affected due to the addition of organoclay
[0007] U.S. Patent 6664343B2 discloses a preparation method of a phenolic composite material, its main component is more than 70% thermoplastic phenolic plastics, plus a certain amount of silicone rubber components and curing agent, its curing speed is fast, moisture-proof performance is good, However, due to the large amount of silicone rubber and phenolic resin used as raw materials, the production cost is relatively high, and the application field is limited.

Method used

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  • Nano-modified flame-retardant phenolic injection molding material and preparation method thereof
  • Nano-modified flame-retardant phenolic injection molding material and preparation method thereof
  • Nano-modified flame-retardant phenolic injection molding material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Slowly add 0.2mol / L magnesium nitrate and 0.1mol / L aluminum nitrate mixed solution (100ml) dropwise into 500mL sodium dodecylbenzenesulfonate solution with a concentration of 0.1mol / L at room temperature, and keep the pH of the system at 9-11, aging at 60°C for 20 hours after the dropwise addition, filtering and washing, the obtained white powder is the nano-modified magnesium-aluminum composite flame retardant. The reaction yield was 92%.

[0042] figure 1 The X-ray diffraction pattern of the nano-modified magnesium-aluminum composite flame retardant prepared for this example, it can be seen from the figure that the first-order diffraction peak (003) appears at 3.10°, and the corresponding layer spacing is 2.84nm, which is indeed Modifiers at the nanoscale.

[0043] figure 2 Schematic diagram of the structure of the nano-modified magnesium-aluminum composite flame retardant prepared for this example, the intercalation agent is mainly sodium dodecylbenzenesulfonate ...

Embodiment 2

[0049] Slowly add 0.1mol / L magnesium nitrate and 0.05mol / L aluminum nitrate mixed solution (50ml) dropwise into 500mL sodium dodecylbenzenesulfonate solution with a concentration of 0.05mol / L at room temperature to keep the pH of the system at 9-11, aging at 80°C for 15 hours after the dropwise addition, filtering and washing, the obtained white powder is the nano-modified magnesium-aluminum composite flame retardant. The reaction yield was 95%.

[0050] 20 grams of the nano-modified magnesium-aluminum composite flame retardant prepared in this implementation and 180 grams of thermoplastic phenolic resin (PF8062 thermoplastic phenolic resin of Zhejiang Jiamin Plastic Co., Ltd.) were melt-blended on a three-roller machine (drum temperature 90-120° C. ), fully mixed for 30 minutes to make nano-modified flame-retardant thermoplastic phenolic resin B.

[0051] Mix each component according to the weight percentage in Table 2, roll on a double-roller mill, and then pulverize to obt...

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Abstract

The invention discloses a nano-modified flame-retardant phenolic injection molding material. The nano-modified flame-retardant phenolic injection molding material is prepared from the following raw materials in parts by weight: 50-80% of nano-modified flame-retardant thermoplastic phenolic resin, 5-30% of wood powder, 5-30% of filling material, 1-2% of release agent, 0.5-1.5% of coloring agent, 5-15% of curing agent and 0.5-5% of curing agent aid. The preparation method of the nano-modified flame-retardant phenolic injection molding material comprises the following steps: mixing a soluble magnesium salt, a soluble aluminum salt and the water to obtain a mixed solution, dropwise adding the mixed solution to a sodium dodecyl benzene sulfonate water solution, keeping the pH value of the reaction system at 8-13, aging after finishing dropwise adding, and then filtering; and blending and modifying the thermoplastic phenolic resin and a nano-modified magnesium-aluminum composite flame retardant to obtain the nano-modified flame-retardant phenolic resin. The nano-modified flame-retardant phenolic injection molding material provided by the invention is long in storage time, and excellent in insulation performance, toughness and heat resistance flame retardance.

Description

technical field [0001] The invention relates to the technical field of phenolic injection plastics, in particular to a nano-modified flame-retardant phenolic injection plastic and a preparation method thereof. Background technique [0002] Phenolic injection molding is a thermosetting plastic material prepared mainly from thermoplastic phenolic resin and other fillers. It has the characteristics of low price, excellent mechanical properties, good insulation performance, and easy and quick molding. It is widely used in military industry, electrical components, instruments, and buildings. and other fields. However, this type of material also has defects such as brittleness, difficult storage, limited heat resistance and flame retardancy. [0003] Most of the currently published invention patents for flame-retardant phenolic molding materials use halogen-containing flame retardants, and their preparation, use, and post-treatment processes have a greater impact on the environme...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L97/02C08K13/06C08K9/04C08K3/28C08K3/16C08K3/34C08K3/26C08K3/36
Inventor 范宏曹骏沈芳沈培林周大鹏俞立琼
Owner ZHEJIANG UNIV
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