Industrial-scale high-performance high-impact polystyrene production device and production process

A technology for polystyrene and production equipment, which is applied in the field of industrial-scale high-performance high-impact polystyrene production equipment and production technology, and can solve the problems of difficult to control styrene and poor comprehensive performance of high-impact polystyrene resin, etc. problems, to achieve the effect of improving toughness and strength, excellent impact resistance, and optimizing efficiency

Pending Publication Date: 2022-04-26
上海希尔吾新材料科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing rubber-styrene monomer graft polymerization is difficult to control the structure of the submicroscopic dispersed phase particles formed in the phase transition process of styrene and rubber slurry graft polymerization (the particle size of the dispersed phase particles, particle The distribution width of diameter distribution), so that the final high-impact polystyrene polymer fails to have the performance of absorbing a large amount of impact energy and also has excellent crack propagation resistance, resulting in the final high-impact polystyrene polymer Styrene resin has poor comprehensive properties in terms of mechanics and optics

Method used

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  • Industrial-scale high-performance high-impact polystyrene production device and production process
  • Industrial-scale high-performance high-impact polystyrene production device and production process
  • Industrial-scale high-performance high-impact polystyrene production device and production process

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Such as figure 2 As shown, an industrial-scale high-performance high-impact polystyrene production device is invented, which includes: a glue preparation and supply device for preparing rubber-styrene glue, a styrene preheater 1a, a glue preheater 1b and glue filter, and static mixer, pre-polymerization device, post-polymerization device, polymer preheating and two-stage devolatilization device, unreacted monomer recovery device, polymer pelletizing connected in sequence through pipelines Drying device; wherein, the styrene preheater 1a is a styrene monomer preheater, and the glue preheater 1b is a preheater for a styrene-polybutadiene series rubber solution; the glue preparation and supply device is connected with the glue The liquid preheater 1b is connected; the glue preheater 1b is connected with the static mixer; the glue filter is set between the glue preheater 1b and the static mixer; the styrene preheater 1a is connected with the static mixer; The mixer is set ...

Embodiment 2

[0059] Such as figure 1 , figure 2 As shown, a production process of industrial-scale high-performance high-impact polystyrene utilizing the production device of industrial-scale high-performance high-impact polystyrene in Example 1 of the present invention is described in detail as follows:

[0060] Step 1. Glue configuration and processing:

[0061] Styrene and chopped rubber are dissolved in the sol tank (rubber configuration tank) by blending and stirring, and are prepared into a rubber styrene solution (rubber slurry, referred to as glue) with a corresponding concentration; temperature control facilities are installed in the sol tank to control The glue preparation temperature is in a suitable temperature range; the prepared glue is stored in the glue storage tank, and is used after circulating and dissolving in the glue storage tank for 24 hours; whether it is glue distribution, circulation or glue transportation, all need The gear pump is used to transport the glue. ...

Embodiment 3

[0086] The formula used by a specific product of the present embodiment is as follows:

[0087] A. Styrene: purity greater than 99.8%, colorless transparent liquid, dosage 0.910 parts.

[0088] B. Industrial white oil: a colorless transparent liquid with a flash point greater than 240°C, the dosage is 0.020 parts.

[0089] C. Internal and external lubricants: zinc stearate, stearic acid amide, 2 kinds of white granules or powders with a purity greater than 99.8%. These 2 kinds are used in combination according to the needs in production according to the ratio of 6:1. The total dosage is 0.005 parts.

[0090] D. Antioxidant: BHT, Irganox1076, according to the needs of production, use these two kinds in combination with a ratio of 2:1, and the dosage is 0.005 parts.

[0091] E. Polybutadiene rubber: the dosage is 0.072 parts.

[0092] F. Ultraviolet absorber and light stabilizer: Tinuvin328, Tinuvin622, these two kinds are used in combination according to the needs in product...

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PUM

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Abstract

The invention discloses an industrial-scale high-performance high-impact polystyrene production device and a production process. A pre-polymerization reaction device in the production device is a pre-polymerization reaction kettle group which is formed by combining four full mixing flow reaction kettles with stirring in a specific series-parallel connection manner; the prepolymerization reaction kettle group comprises two groups of parallel two-stage prepolymerization kettles, and each group of two-stage prepolymerization kettles consists of a first-stage prepolymerization kettle and a second-stage prepolymerization kettle which are connected in series. The production process is a styrene and rubber mixed solution graft copolymerization reaction process formed by combining four prepolymerization kettles; in the prepolymerization reaction, two groups of parallel two-stage prepolymerization kettles are adopted for feeding at the same time; by controlling different process conditions of each group of kettles, the reaction of each group of two-stage prepolymerization kettles reaches the styrene reaction conversion rate and the rubber grafting rate which meet specific requirements; and mixing the two groups of materials in a plug flow reactor, and further polymerizing to obtain the dispersed phase particle modified high-performance high-impact polystyrene with a submicrostructure with specific particle size and particle size distribution.

Description

technical field [0001] The invention belongs to the technical field of polystyrene production, and in particular relates to an industrial-scale high-performance high-impact polystyrene production device and a production process. Background technique [0002] Polystyrene refers to a polymer synthesized by free radical addition polymerization of styrene monomer. Polystyrene is widely used in the light industry market, packaging, electrical, toys, construction and other industries due to its hard quality, good rigidity, easy processing and molding, stable size, insulation and other characteristics, coupled with low price. However, general-purpose polystyrene also has the disadvantage of not being impact-resistant, which limits its application. To make general-purpose polystyrene impact-resistant, rubber has been introduced into it, i.e. modified polystyrene or high-impact polystyrene (HIPS). Rubber-modified polystyrene is an improvement to general-purpose polystyrene, and it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F2/01
CPCC08F212/08C08F2/01
Inventor 赵加昱
Owner 上海希尔吾新材料科技发展有限公司
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