High-temperature-resistant antistatic modified polyamide and preparation method thereof

A polyamide and antistatic technology, applied in the field of polyamide, can solve the problems of polyamide material intrinsic performance influence, poor dispersion of glass fiber, toughness, rigidity decrease, etc., and achieve outstanding comprehensive performance, strong heat resistance and mechanical properties Good results

Pending Publication Date: 2021-06-04
江阴市宏丰塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main component of glass fiber is silica, which has strong thermal insulation ability and strong surface inertia. If it is directly mixed into polyamide material, the problem of poor dispersion and easy agglomeration of glass fiber often occurs; Insufficient compatibility between fiber and polyamide, which will reduce the chemical force between polyamide molecular chains. Although the heat resistance of the prepared polyamide material is greatly improved, the toughness and rigidity are reduced.
[0004] At present, there are few studies on...

Method used

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  • High-temperature-resistant antistatic modified polyamide and preparation method thereof
  • High-temperature-resistant antistatic modified polyamide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] S1. Mix chlorobenzyltrichlorosilane, anhydrous toluene, and anhydrous pyridine uniformly to obtain a mixed solution, and add dry glass fibers to the mixed solution to obtain glass fiber A;

[0043] S2. Add 30-70 parts of octadecyldimethyl tertiary amine to chloroform and stir to disperse, add 40-65 parts of glass fiber A, and ultrasonically shake at 55-75°C for 1-2 hours to obtain material A ;

[0044] S3. Add 3,4-ethylenedioxythiophene to the sulfonate solution, stir and react at a speed of 300-500r / min for 30-40min under normal pressure, and stir to obtain material B;

[0045] S4. Melt 100-200 parts of polyamide, mix 20-30 parts of material A and 50-70 parts of material B and add them to the polyamide melt, add 0.2-0.9 parts of antioxidant, 3-7 parts of Toughening agent, 0.2-0.4 parts of water, extruded to granulate, stirred and reacted for 2-4 hours to obtain modified polyamide.

[0046] The mass ratio of chlorobenzyltrichlorosilane, anhydrous toluene and anhydrous...

Embodiment 2

[0052] S1. Mix chlorobenzyltrichlorosilane, anhydrous toluene, and anhydrous pyridine uniformly to obtain a mixed solution, and add dry glass fibers to the mixed solution to obtain glass fiber A;

[0053] S2. Add 30-70 parts of octadecyldimethyl tertiary amine to chloroform and stir to disperse, add 40-65 parts of glass fiber A, and ultrasonically shake at 55-75°C for 1-2 hours to obtain material A ;

[0054] S3. Add 3,4-ethylenedioxythiophene to the sulfonate solution, stir and react at a speed of 300-500r / min for 30-40min under normal pressure, and stir to obtain material B;

[0055] S4. Melt 100-200 parts of polyamide, mix 20-30 parts of material A and 50-70 parts of material B and add them to the polyamide melt, add 0.2-0.9 parts of antioxidant, 3-7 parts of Toughening agent, 0.2-0.4 parts of water, extruded to granulate, stirred and reacted for 2-4 hours to obtain modified polyamide.

[0056] The mass ratio of chlorobenzyltrichlorosilane, anhydrous toluene and anhydrous...

Embodiment 3

[0062] S1. Mix chlorobenzyltrichlorosilane, anhydrous toluene, and anhydrous pyridine uniformly to obtain a mixed solution, and add dry glass fibers to the mixed solution to obtain glass fiber A;

[0063] S2. Add 30-70 parts of octadecyldimethyl tertiary amine to chloroform and stir to disperse, add 40-65 parts of glass fiber A, and ultrasonically shake at 55-75°C for 1-2 hours to obtain material A ;

[0064] S3. Add 3,4-ethylenedioxythiophene to the sulfonate solution, stir and react at a speed of 300-500r / min for 30-40min under normal pressure, and stir to obtain material B;

[0065] S4. Melt 100-200 parts of polyamide, mix 20-30 parts of material A and 50-70 parts of material B and add them to the polyamide melt, add 0.2-0.9 parts of antioxidant, 3-7 parts of Toughening agent, 0.2-0.4 parts of water, extruded to granulate, stirred and reacted for 2-4 hours to obtain modified polyamide.

[0066] The mass ratio of chlorobenzyltrichlorosilane, anhydrous toluene and anhydrous...

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Abstract

The invention discloses high-temperature-resistant antistatic modified polyamide and a preparation method thereof. The preparation method comprises the following steps: S1, uniformly mixing chlorobenzyl trichlorosilane, anhydrous toluene and anhydrous pyridine to obtain a mixed solution, and adding dried glass fibers into the mixed solution to obtain glass fibers A; s2, adding octadecyl dimethyl tertiary amine into trichloromethane, stirring and dispersing the component, and adding the glass fiber A to obtain a material A; s3, adding 3,4-vinyl dioxythiophene into the sulfonate solution, and stirring to obtain a material B; and S4, melting polyamide, sequentially adding the material A and the material B into the polyamide melt, then adding an antioxidant, a flexibilizer and water, and performing stirring and extrusive granulation to obtain the modified polyamide. The polyamide material prepared by the invention is good in mechanical property, high in thermal stability, good in antistatic property and antibacterial property, low in cost, simple in reaction principle, mild in condition, outstanding in comprehensive performance and relatively good in application prospect, and components such as an antistatic agent and a bacteriostatic agent do not need to be additionally added.

Description

technical field [0001] The invention relates to the technical field of polyamide, in particular to a high-temperature resistant and antistatic modified polyamide and a preparation method thereof. Background technique [0002] Polyamide, commonly known as nylon, has excellent wear resistance, chemical resistance, flexibility, and flame retardancy, and is widely used in chemical industry, electrical parts, mechanical parts, etc. With the rapid development of related industries, there is an increasing demand for high-performance polyamide materials in the market, and filling polyamide materials with materials such as glass fiber and carbon fiber to improve the heat resistance and wear resistance of polyamide materials has already can gradually become mainstream. [0003] The main component of glass fiber is silica, which has strong thermal insulation ability and strong surface inertia. If it is directly mixed into polyamide material, the problem of poor dispersion and easy agg...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L65/00C08K9/06C08K9/04C08K7/14C08K5/42
CPCC08L77/00C08L2201/08C08L2201/04C08L65/00C08K9/06C08K9/04C08K7/14C08K5/42
Inventor 薛东
Owner 江阴市宏丰塑业有限公司
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