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Environment-friendly flame-retardant polypropylene-nylon alloy material and preparation method thereof

A technology of flame-retardant polypropylene and alloy materials, which is applied in the field of alloy materials, can solve the problems of reduced physical properties of flame-retardant polypropylene, no performance and cost advantages, and large amount of flame retardants added, so as to improve flame-retardant properties and broaden the Application, Effect of Ignition Temperature Raise

Inactive Publication Date: 2020-07-10
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The development of flame-retardant polypropylene has been carried out in universities, scientific research institutes and enterprises for many years. Most of the flame-retardant polypropylene is traditional brominated flame-retardant, which has problems such as large smoke generation, low oxygen index, and poor environmental protection. At the same time Due to the large amount of flame retardant added, the physical properties of flame-retardant polypropylene are significantly reduced, and the cost is also high. Compared with commonly used flame-retardant engineering plastics, it has no performance and cost advantages.

Method used

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  • Environment-friendly flame-retardant polypropylene-nylon alloy material and preparation method thereof
  • Environment-friendly flame-retardant polypropylene-nylon alloy material and preparation method thereof
  • Environment-friendly flame-retardant polypropylene-nylon alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0035] raw material Example 1 Example 2 Example 3 Example 4 polypropylene 50 servings 48 servings 35 servings 33 servings PA6 15 servings 15 servings PP grafted maleic anhydride 5 servings 5 servings 5 servings 5 servings glass fiber 20 servings 20 servings 20 servings 20 servings Hydroxysiloxane 2 servings 2 servings melamine 4 parts 4 parts 4 parts 4 parts Ammonium polyphosphate 15 servings 15 servings 15 servings 15 servings Pentaerythritol 5 servings 5 servings 5 servings 5 servings Processing aids 1 serving 1 serving 1 serving 1 serving

[0036] After the above components are fully mixed in a high-speed mixer, they are extruded and granulated by a twin-screw extruder. The extrusion temperature is controlled at 180°C and the screw speed is controlled at 400r / min to obtain the product. The obtained products are subjected to relevant experi...

Embodiment 5-8

[0040]

[0041]

[0042] After the above components are fully mixed in a high-speed mixer, they are extruded and granulated by a twin-screw extruder. The extrusion temperature is controlled at 180°C and the screw speed is controlled at 400r / min to obtain the product. The obtained products are subjected to relevant experimental tests, the flexural strength and flexural modulus are tested according to GB / T9341, the notched impact is tested according to GB / T1843, the flame retardancy is tested according to ASTM UL94, and the glow wire ignition temperature is tested according to IEC60695.2-12 . The test results are shown in the table below:

[0043] project Example 5 Example 6 Example 7 Example 8 Bending strength 105 108 103 104 Flexural modulus 4950 5200 5320 5280 Flame retardant properties V-0(3.2mm) V-0(3.2mm) V-0(1.6mm) V-0(1.6mm) glow wire ignition temperature 775 775 800 800 Notched impact strength (KJ / M 2 ...

Embodiment 5

[0044] Example 5 is a method of directly adding various flame retardants, and the added content is equivalent to 26% coated flame retardant masterbatch. Comparing Example 5 and Example 8, it can be seen that the method of adding masterbatches improves the flame retardant of the system. The ignition level has been increased from 3.2mmV-0 to 1.6mmV-0, and the glow wire ignition temperature has also been improved. Comparing Example 5 and Example 6, the amount of coating masterbatch added in Example 6 is only 22%, but the flame retardant performance of Example 6 has fully reached the effect of Example 5, indicating that the same flame retardant level coating masterbatch is achieved The use of pellets can reduce the amount of flame retardants.

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Abstract

The invention relates to an environment-friendly flame-retardant polypropylene-nylon alloy material and a preparation method thereof. The environment-friendly flame-retardant polypropylene-nylon alloymaterial comprises the following components: polypropylene, PA6, glass fibers, a compatilizer, a coated flame retardant master batch and a processing aid. Compared with pure halogen-free flame-retardant reinforced polypropylene, the rigidity is further improved, and fewer flame retardants are used for achieving the same flame-retardant effect, so that the effects of reducing the cost and reducingthe environmental pollution are achieved. Meanwhile, the heat-resistant temperature and the glowing filament ignition temperature of the product are increased, the application of the material in theelectronic and electric appliance industry is greatly widened, and the effect of general plastic engineering is achieved.

Description

technical field [0001] The invention belongs to the field of alloy materials, in particular to an environment-friendly flame-retardant polypropylene-nylon alloy material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is one of the most rapidly developing plastic varieties in the plastic industry. It has the advantages of good mechanical properties, light specific gravity, non-toxic, easy processing, corrosion resistance, etc., and has a wide source of raw materials and low prices. It is widely used in household appliances, Widely used in automotive and packaging fields. However, there are not many applications of polypropylene in the electrical and electronic industry. The main reason is that polypropylene is extremely flammable, and its limiting oxygen index is only 18, which is an extremely flammable type. Products in the electrical and electronic industry are generally in contact with electricity and are current-carrying components. , ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L77/02C08L51/06C08L23/08C08K13/06C08K9/10C08K7/14C08K5/5415C08K5/3492C08K3/32C08K5/053C08K5/134C08K5/526C08K5/20C08K5/098
CPCC08L23/12C08K2003/323C08K2201/014C08L2201/08C08L2205/03C08L2205/035C08L2201/02C08L2201/22C08L2203/20C08L77/02C08L51/06C08K13/06C08K9/10C08K7/14C08K5/5415C08K5/34922C08K3/32C08K5/053C08K5/1345C08K5/526C08K5/20C08K5/098C08L23/0815
Inventor 刘乐文王亚南杨泽尹朝清张爽爽杨霄云夏建盟黄河生袁绍彦
Owner SHANGHAI KINGFA SCI & TECH
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