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Preparation method of high-intensity and high-impact-resistance polystyrene

A polystyrene, high-impact technology, applied in the field of polymer material preparation, can solve problems such as market expansion restrictions of polystyrene, and achieve the effects of stable and controllable product performance, simple ingredients, and excellent impact resistance.

Inactive Publication Date: 2018-07-13
MIANYANG HONGQI NEW MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few polystyrene material products that meet high strength and high toughness, which limits the market expansion of polystyrene
In the prior art, there is no method for simultaneously using (nano) nucleating agent and rigid body to toughen polystyrene

Method used

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  • Preparation method of high-intensity and high-impact-resistance polystyrene
  • Preparation method of high-intensity and high-impact-resistance polystyrene

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A method for preparing high-strength, high-impact polystyrene that integrates nano-nucleating agents and rigid body synergistic effects using mechanical blending technology, comprising the following steps:

[0029] a. Raw material pretreatment:

[0030] Dry the raw polystyrene pellets at 55°C for 4 hours, dry the nano-calcium carbonate at 130°C for 4 hours; dry A2520 at 130°C for 4 hours; take the lubricant pentaerythritol stearate for use ;

[0031] b. Ingredients and mixing:

[0032] The surface treatment of the nucleating agent is completed in a reactor (for example: a three-necked flask or a reaction kettle, the same hereinafter). Add nano-calcium carbonate and KH-550 (KH-550 is prepared as an ethanol solution with a concentration of 0.5% by mass percentage) that accounts for 0.2% of the mass of nano-calcium carbonate in the reactor; after stirring evenly, heat and reflux for 8 hours. Suction filtration and collecting the filter cake, drying and grinding the filt...

Embodiment 2

[0037] A method for preparing high-strength, high-impact polystyrene that integrates nano-nucleating agents and rigid body synergistic effects using mechanical blending technology, comprising the following steps:

[0038] a. Raw material pretreatment:

[0039] Dry the raw polystyrene pellets at 80°C for 4 hours, dry the nano attapulgite at 110°C for 4 hours; dry A2590 at 110°C for 4 hours; take the lubricant pentaerythritol stearate for use ;

[0040] b. Ingredients and mixing:

[0041] The surface treatment of the nucleating agent is done in the reactor. Add nano-attapulgite and 0.2% KH-550 (KH-550 is prepared as an ethanol solution with a mass percentage concentration of 0.5%) to the reactor; after stirring evenly, heat to reflux for 8 hours. Suction filtration and collecting the filter cake, drying and grinding the filter cake to obtain a surface-treated nucleating agent-surface-treated nano-attapulgite for use;

[0042] Take 92 parts by mass of dried raw polystyrene, 5 p...

Embodiment 3

[0046] A method for preparing high-strength, high-impact polystyrene that integrates nano-nucleating agents and rigid body synergistic effects using mechanical blending technology, comprising the following steps:

[0047] a. Raw material pretreatment:

[0048] Dry the raw polystyrene pellets at 80°C for 4 hours, dry nano-titanium dioxide at 110°C for 4 hours; dry the PMMA@NR core-shell resin at 110°C for 4 hours; take the lubricant pentaerythritol hard fatty acid ester for use;

[0049] b. Ingredients and mixing:

[0050] The surface treatment of the nucleating agent is done in the reactor. Add nano-titanium dioxide and KH-550 with a mass of 0.2% of the mass of nano-titanium dioxide to the reactor (KH-550 is prepared as an ethanol solution with a mass percentage concentration of 0.5%); after stirring evenly, heat and reflux for 8 hours. Suction filtration and collecting the filter cake, drying and grinding the filter cake to obtain a surface-treated nucleating agent-surface...

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Abstract

The invention discloses a preparation method of high-intensity and high-impact-resistance polystyrene. The method is characterized by comprising the following steps: preprocessing raw materials; performing surface treatment on a nucleating agent; mixing 65-92 parts by mass of dried polystyrene, 5-20 parts by mass of rigid particles, 2-10 parts by mass of a nucleating agent undergone surface treatment, and 1-5 parts by mass of a lubricating agent to obtain a mixture; adding the mixture to a twin-screw extruder; smelting and extruding the mixture; then cooling and cutting the mixture into particles; drying to obtain the high-intensity and high-impact-resistance polystyrene. The high-intensity and high-impact-resistance polystyrene prepared according to the method is high in impact resistance, and outstanding in processing performance, pressure resistance and compressive strength, and is applicable to production of products such as food packages, electric elements, inner tanks of refrigerators, housings of electric appliance and electric equipment.

Description

technical field [0001] The invention belongs to the preparation of polymer materials, and relates to a preparation method of high-strength and high-impact polystyrene. The high-strength and high-impact polystyrene prepared by the invention is suitable for the production of food packaging, electrical components, refrigerator linings, electrical shells, electrical equipment and other products. Background technique [0002] High-impact polystyrene (HIPS for short) is a high-impact-strength polystyrene introduced into rubber through chemical or physical methods proposed for the high brittleness of polystyrene. The prior art focuses on improving the impact resistance of HIPS by controlling the amount, size and phase morphology of the dispersed phase rubber or elastomer. However, prior art methods necessarily reduce the tensile and compressive strength of HIPS. For example, using mechanical blending method, 20% SBS (styrene-butadiene-styrene copolymer) can improve the impact res...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L33/12C08L7/00C08L101/00C08K9/06C08K3/22C08K3/34C08K3/26B29B9/06B29B7/00
CPCB29B7/002B29B9/06C08K2003/2241C08K2003/265C08K2201/011C08L25/06C08L2205/24C08L2207/53C08L101/00C08K9/06C08K3/26C08K3/34C08L33/12C08L7/00C08K3/22
Inventor 曾学良汪学军
Owner MIANYANG HONGQI NEW MATERIAL SCI & TECH
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