Cold-proof, impactive and high toughness casting nylon and method for producing the same

A casting nylon, impact-resistant technology, applied in the field of material science, can solve the problems of insignificant cold resistance, high production cost, complicated process, etc., and achieve the effects of excellent comprehensive mechanical properties, low production cost, and uniform distribution of fillers.

Inactive Publication Date: 2009-03-25
邱玉佩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Such as CN200510024996.0 patent discloses a cold-resistant, impact-resistant and high-strength cast nylon composite material and its manufacturing method, which mainly consists of polyamide monomer, surface treatment agent, silicon dioxide (SiO2) monomer, dispersion medium, Composed of toughening agents, it has a certain degree of toughness and rigidity, and is suitable for use in low temperature environments, but there are problems

Method used

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  • Cold-proof, impactive and high toughness casting nylon and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Each raw material component and percentage by weight are in the technical scheme of the present invention:

[0051] Polyamide Monomer 96%

[0052] Catalyst using sodium hydroxide 0.1%

[0053] Activator Triphenylmethane triisocyanate 0.1%

[0054] Toughening agent using hexamethylphosphoric triamide (HPT) C 6 h 18 N 3 OP 1.9%

[0055] Glass beads 400 mesh 1.9%

[0056] The technological process of the embodiment of the present invention:

[0057] Each raw material component operates according to the following steps:

[0058] 1. Melt caprolactam at 60°C;

[0059] 2. Add glass microspheres and hexamethylphosphoric triamide (HPT), dehydrate under vacuum <0.2KPa for 20 minutes, and the temperature is 130°C;

[0060] 3. After the dehydration is completed, add sodium hydroxide and vacuum dehydrate again for 30 minutes at a temperature of 140°C;

[0061] 4. After dehydration, add the activator triphenylmethane triisocyanate, mix well, quickly pour into the mold that ...

Embodiment 2

[0063] Each raw material component and percentage by weight are in the technical scheme of the present invention:

[0064] Polyamide monomer 65.4%

[0065] Catalyst using sodium methoxide 0.65%

[0066] Activator using toluene diisocyanate 1.3%

[0067] Toughening agent using hexamethylphosphoric triamide (HPT) C 6 h 18 N 3 OP 13%

[0068] Glass beads 200 mesh 19.6%

[0069] The technological process of the embodiment of the present invention:

[0070] Each raw material component operates according to the following steps:

[0071] 1. Melt caprolactam at 60°C;

[0072] 2. Add glass microspheres and hexamethylphosphoric triamide (HPT), dehydrate under vacuum <0.2KPa for 20 minutes, and the temperature is 130°C;

[0073] 3. After the dehydration is completed, add sodium methoxide, and vacuum demethanol again for 30 minutes at a temperature of 140°C;

[0074] 4. After dehydration, add the activator triphenylmethane triisocyanate, mix well, quickly pour it into a mold tha...

Embodiment 3

[0076] Each raw material component and percentage by weight are in the technical scheme of the present invention:

[0077] Polyamide monomer 86.2%

[0078] Catalyst using NaOH 0.1%

[0079] Activator Triphenylmethane triisocyanate 0.17%

[0080] Toughening agent using hexamethylphosphoric triamide (HPT) C 6 h 18 N 3 OP 6.8%

[0081] Glass beads 250 mesh 6.8%

[0082] The technological process of the embodiment of the present invention:

[0083] Each raw material component operates according to the following steps:

[0084] 1. Melt caprolactam at 60°C;

[0085] 2. Add glass microspheres and hexamethylphosphoric triamide (HPT), dehydrate under vacuum <0.2KPa for 20 minutes, and the temperature is 130°C;

[0086] 3. After the dehydration is completed, add sodium hydroxide and vacuum dehydrate again for 30 minutes at a temperature of 140°C;

[0087] 4. After dehydration, add the activator triphenylmethane triisocyanate, mix well, quickly pour it into a mold that has been...

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PUM

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Abstract

The invention discloses monomer cast nylon with cold-resistance, impact-resistance and high-tenacity and a preparation method thereof. The components and the weight percentage are as follows: 65.4 percent to 96 percent of caprolactam, 0.1 percent to 0.65 percent of NaOH or sodium methoxide, 0.1 percent to 1.3 percent of isocyanate activator, 1.9 percent to 13 percent of hexamethylphosphoric triamide (HPT) and 1.9 percent to 19.6 percent of glass beads. The process flow is as follows: (1) the caprolactam is melted at 60 DEG C to 90 DEG C; (2) the glass beads and the flexibilizer HPT are added and dehydrated under vacuum with pressure smaller than 0.2KPa; (3) the catalyzer NaOH or sodium methoxide is added and dehydrated under vacuum again or methanol is added; (4) the isocyanate activator is added, fully and evenly mixed and then poured into a mould quickly; and the fashioned nylon product is obtained after natural cooling and demoulding. The monomer cast nylon prepared by the method is characterized by excellent cold resistance, impact resistance and high tenacity.

Description

technical field [0001] The invention relates to a cast nylon composite material and a manufacturing method thereof, belonging to the technical field of material science. Background technique [0002] In the current technology, cast nylon is a widely used engineering plastic, with low polymerization temperature, high crystallinity, large molecular weight, good physical and mechanical properties, mechanical properties, oil resistance, chemical corrosion resistance, etc. . However, at low temperatures, cast nylon, like other non-modified plastics, has greatly reduced performance, low bending strength, impact strength and compressive strength, poor wear resistance, self-slip properties, and poor structural dimensions. stability issues. Especially in the low temperature environment, the product is prone to cracking, and the impact strength and rigidity are significantly reduced, which affects its use in low temperature areas or low temperature fields. The characteristics of th...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08K5/5399C08K7/28C08G69/24C08G69/18
Inventor 邱玉佩邱棱李斌
Owner 邱玉佩
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