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High fire-retardant and high impact-resistant regenerated polystyrene XPS particle and preparation method thereof

A technology for regenerating polystyrene and polystyrene, applied in the field of material science, can solve the problems of being difficult to degrade, destroy soil structure, pollute the air and atmospheric environment, etc., and achieve the effects of easy processing, good mechanical properties and broad prospects.

Inactive Publication Date: 2014-04-23
LIHAI CHEM IND CO LTD OF JIANGSU JINQIAO SALT & CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With the rapid development of petrochemical and plastic industries, polystyrene (XPS) is widely used in building materials, household appliances, etc., but it also causes serious white pollution, and its recycling rate is less than 20%.
If the discarded polystyrene (XPS) is buried deeply, it will pollute the groundwater source, destroy the soil structure, and reduce the production of crops such as food because it is not easy to age and degrade. If it is simply incinerated, it will seriously pollute the air and the atmospheric environment

Method used

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  • High fire-retardant and high impact-resistant regenerated polystyrene XPS particle and preparation method thereof
  • High fire-retardant and high impact-resistant regenerated polystyrene XPS particle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0038] Put the solid powder flame retardant, heat stabilizing system and other auxiliary agent systems in the high-speed mixer according to the formula and mix them uniformly to obtain compound 1, then put the composite carrier in the high-speed mixer for mixing, and then add the liquid flame retardant The agent is mixed well, and then the above-mentioned compound 1 is added, and the mixing is continued to obtain the high flame-retardant high-impact recycled polystyrene (XPS) particles.

[0039] The prepared granules are put into a vacuum oven and dried at 80-90 DEG C for 2-3 hours, and then molded into standard splines with an injection molding machine. The injection molding temperature is set at 185°C for the machine head, 180°C for the first zone, 180°C for the second zone, and 175°C for the third zone. The standard splines were tested for various performances, and the results are shown in Table 1. The amount of the raw materials is based on 100 parts by weight of the comp...

Embodiment 1

[0043] Example 1 is compared with Example 2. From the experimental data, it can be seen that the carrier of the particles is compounded with recycled polystyrene (XPS) and high impact polystyrene (HIPS). On the one hand, high impact polystyrene (HIPS) and recycled Polystyrene (XPS) has good compatibility, and at the same time retains the excellent impact resistance of high impact polystyrene (HIPS) resin, so blending the two together with other additives can obtain very good impact resistance and mechanical properties.

[0044] From the comparison of Examples 3 to 5, it can be known from the experimental data that the flame retardant system of the particles adopts several flame retardants for compounding, and supplemented with other components can give full play to the weather resistance, fluidity, and flame retardancy of various flame retardant components. , so the compounding of flame retardant can obtain very good high flame retardant effect.

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Abstract

The invention discloses a high fire-retardant and high impact-resistant regenerated polystyrene XPS particle, which is composed of a composite carrier, a fire-retardant system, a thermal stable system, and a mixed auxiliary agent; wherein the mass ratio of the composite carrier: the fire-retardant system: the thermal stable system: the mixed auxiliary agent is 90-110:1-5:0.1-0.5:0.05-0.3; the composite carrier is composed of regenerated polystyrene XPS particles and high impact-resistant polystyrene particles, and the fire-retardant system is composed of a solid powder fire retardant and a liquid retardant. Recycled regenerated polystyrene resin is adopted as the main raw material to product the high fire-retardant and high impact-resistant regenerated polystyrene XPS particle, then a novel carrier is added, a novel fire retardant is selected, and the thermal stable system and other auxiliary agent system are optimized, so that the product has the advantages of high fire retardant property, high impact resistance, environment-friendliness, good thermal stability, good mechanical property, and easy processing and forming property.

Description

technical field [0001] The invention belongs to the field of material science, and relates to a high flame-retardant and high-impact polystyrene (XPS) material, and more specifically, to a preparation method of a highly flame-retardant and high-impact recycled polystyrene (XPS) particle and its application. Background technique [0002] Polystyrene (Polystyrene, abbreviated as PS) resin is one of the five general-purpose synthetic resins, and generally ranks fourth in terms of output after PE, PVC and PP. In the early stage of styrene-based resin development, only general-purpose polystyrene (GPPS) was produced, which was hard and brittle, with low mechanical strength, poor heat resistance, and flammable. For this reason, people have done a lot of improvement work, forming high impact polystyrene (HIPS), expandable polystyrene (EPS), extrudable polystyrene (XPS) and so on. [0003] High-impact polystyrene (HIPS) material has excellent mechanical properties and processing p...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L51/04C08K5/00C08K5/02C08K5/03C08K5/06C08K5/134
Inventor 章庚柱吉玲李备战
Owner LIHAI CHEM IND CO LTD OF JIANGSU JINQIAO SALT & CHEM GRP
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