Preparation method of halogen-free flame-retardant nylon 610 and polypropylene alloy composite material

A composite material and polypropylene technology, applied in the field of polymer material preparation, can solve the problems of secondary damage, toxic release, poor flame retardancy, etc.

Inactive Publication Date: 2013-03-27
CHANGSHU CHIKUSHI MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a class of engineering plastics, nylon has the characteristics of high strength, wear resistance, oil resistance and chemical corrosion resistance. It is widely used in automobile manufacturing, electronic appliances, mechanical equipment, aerospace, sports equipment and other fields. However, nylon resin has weak impact strength and Lack of poor flame retardancy
In order to make nylon have good flame retardancy, halogen-containing flame retardants are usually added to nylon, because halogen-containing flame retardants tend to produce toxic and harmful gases when burned, which threatens health, especially in fire conditions. secondary damage
[0003] In view of the above, how to make nylon materials have an outstanding flame-retardant effect and avoid the release of toxic and harmful gases during combustion, and how to make nylon have excellent impact strength has become the direction that the industry is currently working on. However, In the published patents and non-patent literature, there is no technical inspiration that can be used for reference. For this reason, the applicant has made a useful attempt, and the technical solution to be introduced below is produced under this background

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] First, weigh the resin with a melting point of 220°C in parts by weight, namely 140 parts of nylon 610 resin, 51 parts of polypropylene resin, which is general-purpose resin, and 20 parts of polypropylene resin grafted with maleic anhydride and a grafting rate of 2%. The coupling agent is 2.5 parts of aniline methyl triethoxy silane, the filler is 55 parts of surface-treated magnesium hydroxide, and 35 parts of melamine urate with an average particle size of 30 μm. Put them into a high-speed mixer and mix for 10 minutes. Then add 1.7 parts of tris(2,4-di-tert-butylphenyl) phosphite, 77 parts of non-alkali chopped glass fibers with a length of 3mm, and surface modifier weighed in parts by weight. 0.5 part of monostearic acid amide, continue to mix for 5 minutes, and then transfer to a parallel twin-screw extruder for melt extrusion. The temperature of the first to tenth zone of the twin-screw extruder is: the temperature of the first zone is 220℃, the temperature of the se...

Embodiment 2

[0019] First, weigh the resin with a melting point of 220°C in parts by weight, namely 170 parts of nylon 610 resin, 39 parts of polypropylene resin, which is general-purpose resin, and polypropylene resin 17 with maleic anhydride grafted and 2% grafting rate. Part, coupling agent, 2.2 parts of aniline methyl triethoxysilane, filler, 50 parts of surface-treated magnesium hydroxide, and 45 parts of melamine urate with an average particle size of 30 μm, put them into a high-speed mixer and mix for 8 minutes, Then add 0.9 parts of tris(2,4-di-tert-butylphenyl) phosphite, 91 parts of non-alkali chopped glass fiber with a length of 3mm and surface modifier weighed in parts by weight. 0.9 parts of monostearic acid amide, continue to mix for 3 minutes, and the rest are the same as described in Example 1.

Embodiment 3

[0021] First, weigh the resin with a melting point of 220°C in parts by weight, namely 160 parts of nylon 610 resin, 45 parts of polypropylene resin, which is general-purpose resin, and 28 parts of polypropylene resin grafted with maleic anhydride and a grafting rate of 2%. Coupling agent, 3.3 parts of aniline methyl triethoxy silane, filler, 60 parts of magnesium hydroxide with surface treatment, and 52 parts of melamine urate with an average particle size of 30μm. Put them into a high-speed mixer and mix for 15 minutes. Then add 1.5 parts of tris(2,4-di-tert-butylphenyl) phosphite, 82 parts of non-alkali chopped glass fiber with a length of 3mm, and surface modifier weighed in parts by weight. 0.7 parts of monostearic acid amide, continue to mix for 6 minutes, and the rest are the same as described in Example 1.

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Abstract

The invention discloses a preparation method of a halogen-free flame-retardant nylon 610 and polypropylene alloy composite material, and belongs to the technical field of preparation of high-molecular materials. The preparation method comprises the following steps of: firstly, putting nylon 610 resin, polypropylene resin, grafted polypropylene resin, a coupling agent, filler and melamine urate weighed according to the weight parts into a high-speed mixing machine; then adding an antioxidant, glass fiber and a surface modifying agent weighed according to the weight parts; and then transferring the materials into a parallel double-screw extruding machine for melt extrusion to obtain the halogen-free flame-retardant nylon 610 and polypropylene alloy composite material, wherein the temperatures from the first area to the tenth area of the double-screw extruding machine are as follows: 220 DEG C, 225 DEG C, 225 DEG C, 230 DEG C, 230 DEG C, 235 DEG C, 235 DEG C, 240 DEG C, 240 DEG C and 240 DEG C. The halogen-free flame-retardant nylon 610 and polypropylene alloy composite material has the advantages that the safety can be guaranteed, the environment-friendly effect is achieved; and the tensile strength is more than 170MPa, the bending strength is more than 240MPa and the impact strength of gaps of a cantilever beam is more than 29kj/m<2>.

Description

Technical field [0001] The invention belongs to the technical field of polymer material preparation, and specifically relates to a preparation method of a halogen-free flame-retardant nylon 610 and polypropylene alloy composite material. Background technique [0002] As a class of engineering plastics, nylon has the characteristics of high strength, wear resistance, oil resistance and chemical corrosion resistance. It is widely used in automobile manufacturing, electronic appliances, mechanical equipment, aerospace, sports equipment and other fields. However, nylon resin has weak impact strength and Lack of poor flame retardancy. In order to make nylon have good flame retardancy, halogen-containing flame retardants are usually added to nylon. Because halogen-containing flame retardants are prone to produce toxic and harmful gases when burned, they threaten health, especially in fire conditions. Secondary damage. [0003] In view of the above, how to make nylon materials have outs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L23/12C08L51/06C08K13/06C08K9/00C08K7/14C08K3/22C08K5/3492C08K5/526C08K5/20B29C47/92B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 朱雪忠
Owner CHANGSHU CHIKUSHI MACHINERY
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