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Preparation technology for modified engineering plastics

A technology of engineering plastics and preparation process, which is applied in the field of engineering plastics, can solve the problems of toughening agent functioning, the modification effect is not very good, and the toughening effect is general, so as to achieve good toughening effect, good overall modification effect, The effect of highlighting substantive features

Inactive Publication Date: 2019-01-11
NANJING OUNAYI ORGANIC PHOTOELECTRICITY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, this purpose is achieved by adding a toughening agent, but the modification effect is not very good. On the one hand, due to the problems of the components themselves, and on the other hand, there are problems in the process itself, the toughening agent cannot maximize the Play a role, the toughening effect is general, at the same time, because the strength of the plastic will decrease after toughening, so the reasonable allocation of toughness and strength is very important

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation process for modified engineering plastics, comprising the following steps:

[0021] The first step is to dissolve the resin raw material and the elastomer in the solvent, and add a compatibilizer to solubilize; high-speed stirring and mixing for 10-20 minutes;

[0022] In the second step, add other additives to the solvent in the first step to mix and stir. The order of addition is as follows: divide the toughening agent into three equal parts, after the first part of toughening agent is added, stir and mix evenly, and then add antioxidants , nucleating agent, nucleating aid; add the second portion of toughening agent, stir and mix evenly; then add defoamer, stir and mix evenly, then add the third portion of toughening agent, stir and mix evenly to obtain a mixed slurry ;

[0023] The third step is to pulverize the filler, and then add the filler to the slurry in the second step to continue mixing;

[0024] The fourth step is to sieve the mixed slurry, p...

Embodiment 2

[0031] The raw material components of the engineering plastics in Example 1 are: 30 parts of resin raw materials, 20 parts of elastomers, 2 parts of toughening agents, 0.5 parts of antioxidants, 0.5 parts of nucleating agents, 0.1 parts of nucleating aids, 2 parts of fillers, 0.2 parts of defoamer, 2 parts of solvent.

Embodiment 3

[0033] The raw material components of the engineering plastics in Example 1 are: 50 parts of resin raw material, 30 parts of elastomer, 10 parts of toughening agent, 2 parts of antioxidant, 2 parts of nucleating agent, 1 part of nucleating auxiliary agent, 10 parts of filler, 1 part of defoamer, 10 parts of solvent.

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Abstract

The invention discloses a preparation technology for modified engineering plastics. The preparation technology comprises the following steps: 1) dissolving resin raw materials and elastomer in a solvent and adding a compatilizer for solubilizing; 2) adding other auxiliaries into the solvent in the step 1) and then mixing and stirring, wherein the adding sequence is that toughening agents are equally divided into three parts and then added in several times; 3) smashing the filler and then adding the filler into the sizing agent acquired in the step 2) and continuing to mix; 4) screening the mixed sizing agent, putting the sizing agent into a twin-screw extruder for primarily pelletizing, and then extruding into engineering plastic grains; 5) cooling the engineering plastic grains and then adding the engineering plastic grains into the twin-screw extruder for extruding and molding, thereby extruding into the engineering plastics in required shape. According to the preparation technologyfor modified engineering plastics, disclosed by the invention, the toughening effect of the modified plastics is excellent, the influence on rigidity is small and the overall modified effect of the engineering plastics is excellent.

Description

technical field [0001] The invention relates to engineering plastics, in particular to a preparation process of modified engineering plastics. Background technique [0002] Engineering plastics refer to a class of high-performance polymer materials that can be used as structural materials, withstand mechanical stress in a wide temperature range, and be used in harsh chemical and physical environments. Engineering plastics must be able to withstand certain external forces, have good mechanical properties and dimensional stability, and maintain their excellent properties at high and low temperatures, and can be used as plastics for engineering structural parts. [0003] At present, the main modification point of modified plastics is toughening and improving the toughness of plastics. In the prior art, this purpose is achieved by adding a toughening agent, but the modification effect is not very good. On the one hand, due to the problems of the components themselves, and on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L67/00C08L23/12C08L25/06C08L23/16C08L9/00C08L9/06C08K3/04
CPCC08L23/12C08L25/06C08L67/00C08L77/00C08L23/16C08L9/00C08L9/06C08K3/04
Inventor 肖淑勇
Owner NANJING OUNAYI ORGANIC PHOTOELECTRICITY CO LTD
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