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Preparation method of high-strength hard plastic alloy granules

A hard plastic and high-strength technology, applied in the field of plastic alloys and plastics, can solve problems such as poor weather resistance and easy cracking of polystyrene, and achieve the effects of improving aging resistance, reducing environmental pressure, and reducing costs

Active Publication Date: 2020-07-10
WUXI JIAHONG PLASTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems in the prior art, the present invention provides a method for preparing high-strength hard plastic alloy pellets, which solves the problems of easy cracking and poor weather resistance of polystyrene, uses phenyl silicone resin as a three-dimensional frame structure, and uses ethylene -Vinyl acetate copolymer emulsion is used as an internal plasticizer and binder, which improves the tensile strength and impact strength, and also effectively improves the aging resistance

Method used

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  • Preparation method of high-strength hard plastic alloy granules

Examples

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Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing high-strength hard plastic alloy pellets, characterized in that it comprises the following steps:

[0022] Step 1, adding polystyrene to toluene and stirring evenly, distilling under constant temperature and reduced pressure until a small amount of crystals are precipitated, cooling and filtering to obtain a saturated polystyrene toluene liquid;

[0023] Step 2: Add the ethylene-vinyl acetate copolymer emulsion to the saturated polystyrene toluene liquid and stir evenly at low temperature to obtain a saturated polystyrene mixed liquid

[0024] Step 3, adding phenyltrichlorosilane to the saturated polystyrene mixed liquid for low-temperature ultrasonic dispersion for 20 minutes, and then filtering the insoluble matter to obtain a mixed toluene liquid;

[0025] Step 4, put the mixed toluene liquid into the mold to evaporate at constant temperature to form viscous granules, and then place it in a sealed reaction kettle for ventilation reaction for 2 ...

Embodiment 2

[0033] A method for preparing high-strength hard plastic alloy pellets, characterized in that it comprises the following steps:

[0034] Step 1, adding polystyrene to toluene and stirring evenly, distilling under constant temperature and reduced pressure until a small amount of crystals are precipitated, cooling and filtering to obtain a saturated polystyrene toluene liquid;

[0035] Step 2: Add the ethylene-vinyl acetate copolymer emulsion to the saturated polystyrene toluene liquid and stir evenly at low temperature to obtain a saturated polystyrene mixed liquid

[0036] Step 3, adding phenyltrichlorosilane to the saturated polystyrene mixed liquid for 50 minutes of ultrasonic dispersion at low temperature, and then filtering the insoluble matter to obtain a mixed toluene liquid;

[0037] Step 4, put the mixed toluene liquid into the mold and evaporate at constant temperature to form viscous granules, and then place them in a sealed reaction kettle for ventilation and react ...

Embodiment 3

[0045] A method for preparing high-strength hard plastic alloy pellets, characterized in that it comprises the following steps:

[0046] Step 1, adding polystyrene to toluene and stirring evenly, distilling under constant temperature and reduced pressure until a small amount of crystals are precipitated, cooling and filtering to obtain a saturated polystyrene toluene liquid;

[0047] Step 2: Add the ethylene-vinyl acetate copolymer emulsion to the saturated polystyrene toluene liquid and stir evenly at low temperature to obtain a saturated polystyrene mixed liquid

[0048] Step 3, adding phenyltrichlorosilane to the saturated polystyrene mixed solution for low-temperature ultrasonic dispersion for 40 minutes, and then filtering the insoluble matter to obtain a mixed toluene solution;

[0049] Step 4, put the mixed toluene liquid into the mold to evaporate at constant temperature to form viscous granules, and then place it in a sealed reaction kettle for ventilation reaction fo...

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Abstract

The invention belongs to the field of plastics, relates to the field of plastic alloys, in particular to a preparation method of high-strength hard plastic alloy granules. The preparation method comprises the following steps: step 1. adding polystyrene into toluene, uniformly stirring, carrying out constant-temperature reduced-pressure distillation to at least crystallize and separate out, coolingand filtering to obtain a saturated polystyrene toluene solution; step 2, adding the ethylene-vinyl acetate copolymer emulsion into the saturated polystyrene toluene solution, and uniformly stirringat low temperature to obtain a saturated polystyrene mixed solution; step 3, adding phenyl trichlorosilane into the saturated polystyrene mixed solution, carrying out low-temperature ultrasonic dispersion for 20-50 minutes, and filtering insoluble substances to obtain a mixed toluene solution; step 4, putting the mixed methylbenzene solution into a mold for constant-temperature evaporation to formviscous particles, and then putting the viscous particles into a sealed reaction kettle for ventilation reaction for 2-5 hours to obtain prefabricated granules; and step 5, sintering the prefabricated granules for 30-60 min at the constant temperature so as to obtain the alloy granules.

Description

technical field [0001] The invention belongs to the field of plastics and relates to the field of plastic alloys, in particular to a method for preparing high-strength hard plastic alloy pellets. Background technique [0002] At present, polystyrene refers to a polymer synthesized by free radical addition polymerization of styrene monomer. It is a colorless and transparent thermoplastic with a glass transition temperature higher than 100°C, so it is often used to make various disposable containers that need to withstand the temperature of boiling water, as well as disposable foam lunch boxes. Polystyrene has a head-to-tail structure, the main chain is a saturated carbon chain, and the side group is a conjugated benzene ring, which makes the molecular structure irregular, increases the rigidity of the molecule, and makes PS a non-crystalline linear polymer. Due to the presence of benzene rings, PS has a high Tg (80-105°C), so it is transparent and hard at room temperature. D...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L23/08C08L83/04C08J3/00
CPCC08L25/06C08J3/005C08L2201/08C08J2325/06C08J2423/08C08J2483/04C08L23/0853C08L83/04
Inventor 顾友强管锡康
Owner WUXI JIAHONG PLASTICS TECH
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