Super-tough green nylon 11 alloy prepared by using in-situ process and preparation method thereof

A nylon and alloy technology is applied in the field of preparing super-tough green nylon 11 alloy, which can solve the problems of less super-tough green nylon 11 alloy, strong equipment corrosion, strong eye irritation, etc., and achieves easy popularization and application and low equipment corrosion. , the effect of high notched impact strength

Active Publication Date: 2014-02-26
SINOPLAST NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the research of super-tough nylon, the reactive compatibilizer used is generally maleic anhydride (MAH), but the grafting rate of MAH is low, and the compatibilization effect is limited, and glycidyl methacrylate (GMA) is used as The grafting rate of active monomer grafted polymer is generally higher than that of MAH as active monomer grafted polymer
Secondly, MAH is highly corrosive to equipment and has a greater impact on equipment, especially when it is used in industrial applications and more sophisticated equipment, it is very unfavorable
Third, MAH is highly irritating to the human body, especially the eyes. From the perspective of environmental protection and health, it should not be used in large quantities.
At present, there are few domestic reports on the preparation of super-tough green nylon 11 alloy by in-situ method

Method used

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  • Super-tough green nylon 11 alloy prepared by using in-situ process and preparation method thereof
  • Super-tough green nylon 11 alloy prepared by using in-situ process and preparation method thereof
  • Super-tough green nylon 11 alloy prepared by using in-situ process and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A super-tough green nylon 11 alloy whose raw material composition and parts by weight are:

[0064]

[0065] The method for preparing the above-mentioned super-tough and super-tough green nylon 11 alloy includes the following steps:

[0066] (1) Dissolve the initiator dicumyl peroxide (DCP) in glycidyl methacrylate (GMA) to obtain a solution and place it for use;

[0067] (2) Place nylon 11 in a vacuum oven at 90°C for 4 hours, and place POE in a vacuum oven at 70°C for 4 hours. After cooling, mix nylon 11 with POE uniformly, and then add high-density polyethylene grafted Malay Acid anhydride (HDPE-g-MAH), and finally add the solution of step (1) to obtain a premix;

[0068] (3) Put the premixed material of step (2) in a parallel twin-screw extruder to melt and extrude, and pelletize. The process parameters are as follows: the parallel twin-screw extruder has a screw speed of 200r / min and a zone temperature of 180 ℃, the second zone temperature is 190℃, the third zone temperat...

Embodiment 2

[0071] A super-tough green nylon 11 alloy whose raw material composition and parts by weight are:

[0072]

[0073] The method for preparing the above-mentioned super-tough and super-tough green nylon 11 alloy includes the following steps:

[0074] Step (1) and step (2) are the same as step (1) and step (2) of embodiment 1;

[0075] (3). Put the premixed material of step (2) in a parallel twin-screw extruder to melt and extrude and pelletize. The process parameters are as follows: the parallel twin-screw extruder has a screw speed of 100r / min and a zone temperature of 180 ℃, the second zone temperature is 190℃, the third zone temperature is 200℃, the fourth zone temperature is 200℃, the fifth zone temperature is 200℃, the sixth zone temperature is 200℃, the seventh zone temperature is 200℃, and the die temperature is 195℃.

Embodiment 3

[0077] A super-tough green nylon 11 alloy whose raw material composition and parts by weight are:

[0078]

[0079] The method for preparing the above-mentioned super-tough and super-tough green nylon 11 alloy includes the following steps:

[0080] (1) Dissolve the initiator 2,5-dimethyl-2,5-di-tert-butylperoxyhexane (L-101) in glycidyl methacrylate (GMA) to obtain a solution and place spare;

[0081] (2) Place nylon 11 in a vacuum oven at 90°C for 4 hours, and place POE in a vacuum oven at 70°C for 4 hours. After cooling, mix nylon 11 with POE uniformly, and then add high-density polyethylene grafted Malay Acid anhydride (HDPE-g-MAH), and finally add the solution of step (1) to obtain a premix;

[0082] (3). Put the premixed material of step (2) in a parallel twin-screw extruder to melt and extrude and pelletize. The process parameters are as follows: the parallel twin-screw extruder has a screw speed of 75r / min and a zone temperature of 180 ℃, the second zone temperature is 190℃, ...

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Abstract

The invention discloses a super-tough green nylon 11 alloy prepared by using an in-situ process and a preparation method thereof. According to the invention, the prepared nylon 11 alloy has high toughness, low temperature resistance, low water absorption and low oil absorption, cost for the alloy can be reduced by about 26%, and the nylon 11 alloy has a great industrial application value. Raw materials for the super-tough nylon 11 alloy provided by the invention comprise, by weight, 55 to 95 parts of nylon 11, 5 to 45 parts of a copolymer of ethene and octene, 0.01 to 1 part of an initiator, 0.1 to 6 parts of glycidyl methacrylate and 0.1 to 4 parts of high density polyethylene-grafted maleic anhydride, wherein the sum of the weight parts of nylon 11 and the copolymer of ethene and octene is 100. Nylon 11 used in the invention is long-carbon-chain soft nylon synthesized with castor oil as a raw material and is a bio-based material. The prepared super-tough nylon 11 alloy in the invention has the characteristics of greenness and environment friendliness and has excellent comprehensive properties.

Description

Technical field [0001] The invention belongs to the field of materials, and specifically relates to an in-situ method for preparing super-tough green nylon 11 alloy and a method thereof. Background technique [0002] Polyamide is often called nylon, and it is currently the most widely used type of engineering plastic. The industrialized varieties mainly include nylon 11, nylon 66, nylon 610 and nylon 11, etc. Nylon is one of the five most important engineering plastics. Nylon 11 is a long carbon chain soft nylon synthesized from castor oil. Compared with nylon 6 and nylon 66, it has the advantages of low water absorption, good dimensional stability, low temperature resistance, and excellent electrical insulation properties; It also has an elastic memory effect. When the external force is removed, nylon 11 can return to its original shape; it has good stress cracking resistance and is embedded in metal parts and is not easy to crack; it can meet various melt viscosity ranges for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L23/08C08L51/06C08F255/02B29C47/92B29B13/06B29C48/92
CPCB29C48/04B29C48/40B29C48/625B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 朱怀才王忠强
Owner SINOPLAST NEW MATERIAL
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