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Medium-anti-impact polystyrene resin production system

An impact polystyrene, production system technology, applied in the field of resin synthesis, can solve the problems of increased labor, poor secondary mixing effect, poor transparency, etc., and achieve the effect of quality assurance

Active Publication Date: 2018-07-27
GUANGDONG RASTAR SYNTHETIC MATERIAL COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since different plastic products have different requirements for product strength, for example, general toys and stationery products do not need too high high impact strength, and there are no medium impact products on the market at present, so it is usually used in high impact strength. The method of blending transparent polystyrene into polystyrene resin reduces product strength and reduces certain costs, but this method has disadvantages such as increased labor, poor secondary blending effect, and inability to maximize the toughening effect of rubber.
Generally, in the production process of HIPS, the smaller the rubber particles dispersed in polystyrene, the better the transparency, but the poorer the impact strength, however, the larger the rubber particles dispersed in polystyrene, the better the impact strength. The better, but the less transparent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1 A production system for medium-impact polystyrene resin

[0052] Such as figure 1 As shown, a medium-impact polystyrene resin production system includes a sol tank 21, a mixing feed tank 22, an ultrafine powder batching tank 11, an ultrafine powder feed tank 12, a prepolymerization preheater 51, First stage prepolymerization reactor 31, second stage prepolymerization reactor 32, first stage polymerization reactor 41, second stage polymerization reactor 42, third stage polymerization reactor 43, fourth stage polymerization reactor 44, Devolatilization preheater 53, first-stage devolatilizer 61, second-stage devolatilizer 62, circulating condenser 55, collection tank 63 and granulator 9; above-mentioned sol tank 21, mixed feed tank 22, superfine Powder batching tank 11, superfine powder feed tank 12, first stage prepolymerization reactor 31, second stage prepolymerization reactor 32, multistage polymerization reactor, first stage devolatilizer 61, second stage ...

Embodiment 2

[0061] Example 2 A production system for medium-impact polystyrene resin

[0062] As a further improvement to Embodiment 1, the production system of this embodiment further includes a three-stage vacuum system.

[0063] This three-stage vacuum system comprises a first-stage vacuum pump, a second-stage vacuum pump 8, and a third-stage vacuum pump 7; the third-stage vacuum pump 7 is arranged on the delivery pipeline of the devolatilizer and the circulating condenser 55; the second-stage prepolymerization reactor The top outlet pipeline of 32 is connected in parallel with the top outlet pipeline of the first-stage devolatilizer 61 through the first reflux condenser 52, then is connected with the first-stage vacuum pump after being connected with the second-stage vacuum pump 8 by the circulation condenser 55; The outlet pipeline of the secondary devolatilizer 62 passes through the second reflux condenser 54 and the third stage vacuum pump 7 successively and is connected with the c...

Embodiment 3

[0066] Example 3 A production system for medium-impact polystyrene resin

[0067] Such as figure 2 As shown, as a further improvement to Embodiment 1, the production system of this embodiment also includes a total heat transfer oil system.

[0068] The total heat transfer oil system includes a heat transfer oil circulation system and a heat transfer oil intelligent temperature control system. The heat transfer oil intelligent temperature control system connects the heat transfer oil pipeline with the inner coil and outer jacket of the reactor to form a heat transfer oil circulation system. Under normal circumstances, the temperature of the polymerization reactor is controlled through the heat transfer oil circulation of the inner coil and the outer jacket, and the reaction heat generated by the polymerization reaction is removed in time. Cool quickly.

[0069] The heat transfer oil intelligent temperature control system consists of a heat transfer oil storage tank 801, a c...

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Abstract

The invention discloses a medium-anti-impact polystyrene resin production system, which comprises a system collosol tank, a mixed feeding tank, a two-stage prepolymerization reactor, a multistage polymerization reactor, a two-stage devolatilization device and a pelleting machine in sequential and series connection, wherein a superfine powder material preparation tank and a superfine powder feedingtank are connected in series and are then connected with an inlet of a first-stage polymerization reactor of the multistage polymerization reactor; a prepolymerization preheater is arranged on a pipeline between the mixed feeding tank and the first-stage polymerization reactor; a devolatilization preheater is arranged on a pipeline between the last-stage polymerization reactor of the multistage polymerization reactor and a first-stage devolatilization device; the upper parts of the end parts of the first-stage and second-stage devolatilization devices are connected in series and are then connected with a cycle condenser through a conveying pipeline; a connecting tank is connected with the bottom of the cycle condenser; a bottom outlet of the collecting tank is connected with an inlet of the prepolymerization preheater. A multistage prepolymerization-multistage polymerization-multistage devolatilization combination system is used; the requirements of users on medium-anti-impact products can be met; the large-scale production is easy.

Description

technical field [0001] The invention belongs to the technical field of resin synthesis. More specifically, it relates to a medium-impact polystyrene resin production system. Background technique [0002] Polystyrene (PS) has the advantages of excellent formability, good transparency, high rigidity, good electrical insulation performance, easy dyeing, low hygroscopicity and low price. It is widely used in packaging, electronics, construction, automobiles, home appliances, instruments, daily necessities and toys. It has been widely used in other industries and has become one of the fastest-growing varieties of general-purpose synthetic resins. Polystyrene can be mainly divided into transparent grade polystyrene (GPPS, commonly known as transparent benzene) and high impact polystyrene (HIPS, commonly known as modified benzene). Among them, GPPS is polymerized from styrene monomer, and its appearance is colorless or light blue transparent particles. It is used in daily necessi...

Claims

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Application Information

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IPC IPC(8): C08F279/02C08F212/08C08F2/01
CPCC08F2/01C08F279/02C08F212/08
Inventor 陈利杰陈朝阳黄彦鹏
Owner GUANGDONG RASTAR SYNTHETIC MATERIAL COMPANY
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