High-viscosity nylon 6 and preparation method thereof

A nylon, high-viscosity technology, applied in the field of polymer synthesis, can solve the problems of difficulty in stirring and by-product diffusion, and achieve the effect of obvious improvement effect, reasonable ingredients and improved wear resistance.

Inactive Publication Date: 2015-11-25
河北北田工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Another object of the present invention is to provide a preparation method of the above-mentioned high-viscosity nylon 6, which is simple and quick in response, and can overcome the difficulties in stirring and diffusion of by-products due to the high viscosity of materials in the late stage of the reaction in the prior art. defects, the prepared product has good mechanical properties

Method used

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  • High-viscosity nylon 6 and preparation method thereof
  • High-viscosity nylon 6 and preparation method thereof
  • High-viscosity nylon 6 and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1 A kind of preparation method of high viscosity nylon 6

[0050] This embodiment is carried out according to the following steps:

[0051] (11) mixed

[0052] 80kg of nylon 6 with a relative viscosity of 2.8Pa·S, 15kg of low-temperature toughening agent (a mixture of 3.75kg of binary ethylene-propylene rubber and 11.25kg of grafted EPDM rubber), 2.7kg of wear-resistant agent (of 1.4 kg polytetrafluoroethylene and 1.3kg molybdenum disulfide mixture), 0.3kg antioxidant {is 0.075kg tris(2.4-di-tert-butylphenyl) phosphite, 0.075kg tetrakis[β-(3,5- Di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol, and 0.15kg N,N'-bis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl)hexanedi Amine mixture}, 1kg of black masterbatch, and 1kg of reactive masterbatch with nylon 6 as the carrier, produced by Brüggemann Chemical Company in Germany, the model is M-1251, placed in a mixer with a speed of 200rpm, and mixed evenly get A1;

[0053] (12) Mixing

[0054] Add A1 i...

Embodiment 2～6

[0057] Embodiment 2~6 high-viscosity nylon 6 and preparation method thereof

[0058] Example 2 ～ 6 are a kind of high-viscosity nylon 6 (referred to as the second to sixth high-viscosity nylon 6 in turn) and its preparation method, which are similar to Example 1, the only difference is the ratio of raw materials and the preparation process The technical parameters are different, see the table below for details.

[0059] Table 1 Technical parameter list

[0060]

Embodiment 7

[0061] Embodiment 7 Performance test of the first to sixth high-viscosity nylon 6

[0062] This embodiment is to embodiment 1 ～ The first to sixth high-viscosity nylon 6 prepared in 6 were tested for their mechanical properties, and the testing methods were all the testing methods in the prior art, specifically:

[0063] 1) Tensile strength

[0064] Test according to GB / T1040, test speed: 50mm / min;

[0065] 2) Elongation at break

[0066] Test according to GB / T1040, test speed: 50mm / min;

[0067] 3) Bending strength

[0068] Test according to GB / T9341, test speed: 2mm / min;

[0069] 4) Charpy notched impact strength

[0070] Test according to GB / T1043;

[0071] 5) Low temperature Charpy notched impact strength (-40°C)

[0072] Test according to GB / T1043;

[0073] 6) Shore D hardness

[0074] Test according to GB / T2411;

[0075] 7) Melt index MFR

[0076] Test according to GB / T3682.

[0077] The test results of the mechanical properties of No. 1 to No. 6 high-visc...

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Abstract

The invention provides high-viscosity nylon 6, made from nylon 6, low temperature resistant toughener, wear-resistant agent, antioxidant, black masterbatch, and chain extender according to a reasonable ratio. The high-viscosity nylon 6 is high in molecular weight, high in viscosity and good in mechanical property. The invention further provides a preparation method of the high-viscosity nylon 6. The preparation method includes sequential steps of blending, mixing, drying and the like; the preparation method is simple and high in response speed; the defect that high viscosity of materials in later period of reaction causes difficulty of stirring and byproduct spreading is overcome. The preparation method is applicable to the preparation of the high-viscosity nylon 6 and is further applicable to processing and application of spring guards for heavy-duty trucks.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, and relates to a nylon, in particular to a high-viscosity nylon 6 and a preparation method thereof. Background technique [0002] Nylon (PA) is a kind of engineering plastic with good comprehensive performance, which is widely used in various fields such as automobile industry, electrical industry, building materials, mechanical parts, medical equipment and daily necessities. Due to its good barrier properties to organic solvents such as chemicals and oils, the demand for containers made of PA has greatly increased. With the development of the process of economic globalization, my country's automobile, electronic appliances, communications, and machinery industries are also developing rapidly. The demand for nylon is increasing, and the requirements for its performance and variety are also getting higher and higher. Nylon has been It has become an indispensable structural material in industries s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L23/16C08L51/04C08L27/18C08K13/02C08K3/30C08K5/526C08K5/134C08K5/20C08J3/22B29C47/92B29C48/92
CPCC08L77/02B29C48/92B29C2948/9258B29C2948/92704C08J3/226C08J2377/02C08J2451/04C08L2205/025C08L2205/035C08L23/16C08L51/04C08L27/18C08K13/02C08K2003/3009C08K5/526C08K5/1345C08K5/20C08L51/003
Inventor 王丽杰胡鹏举澹台建礼袁福兴孔祥娇
Owner 河北北田工程塑料有限公司
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