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 o

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
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1:

[0028] A method for preparing high-strength and high-impact polystyrene that uses mechanical blending technology to integrate the synergistic effect of nano-nucleating agent and rigid body, including the following steps:

[0029] a. Raw material pretreatment:

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

[0031] b. Ingredients and mixing:

[0032] The surface treatment of the nucleating agent is completed in the reactor (for example: a three-necked flask or a reactor, the same hereinafter). Add nano-calcium carbonate and KH-550 (KH-550 is formulated as an ethanol solution with a concentration of 0.5% by mass) whose mass accounts for 0.2% of the mass of nano-calcium carbonate into the reactor; after stirring uniformly, it is heated to reflux for 8 hours. Suction and collect the filter cake, dry and grind the filter cake to ...

Example Embodiment

[0036] Example 2:

[0037] A method for preparing high-strength and high-impact polystyrene that uses mechanical blending technology to integrate the synergistic effect of nano-nucleating agent and rigid body, including the following steps:

[0038] a. Raw material pretreatment:

[0039] Dry the raw polystyrene pellets at 80°C for 4 hours, and 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 completed in the reactor. Add the nano attapulgite and KH-550 (KH-550 is formulated as an ethanol solution with a concentration of 0.5% by mass) whose mass accounts for 0.2% of the mass of the nano attapulgite into the reactor; after stirring uniformly, heating and refluxing for 8 hours. Suction and collect the filter cake, dry and grind the filter cake to obtain the surface-treated nucleating agent-the surface-treated na...

Example Embodiment

[0045] Example 3:

[0046] A method for preparing high-strength and high-impact polystyrene that uses mechanical blending technology to integrate the synergistic effect of nano-nucleating agent and rigid body, including the following steps:

[0047] a. Raw material pretreatment:

[0048] Dry the raw polystyrene pellets at 80°C for 4 hours, dry the nano-titanium dioxide at 110°C for 4 hours; dry PMMA@NR core-shell structure 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 completed in the reactor. Add nanometer titania and KH-550 (KH-550 is formulated as an ethanol solution with a concentration of 0.5% by mass) whose mass accounts for 0.2% of the mass of nanometer titania into the reactor; after stirring uniformly, it is heated to reflux for 8 hours. Suction and collect the filter cake, dry and grind the filter cake to obtain the surface-treated nu...

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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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