Halogen-free flame retardant highlight polypropylene and preparation method thereof

A polypropylene and flame retardant technology, which is used in the preparation of halogen-free flame retardant high-gloss polypropylene, can solve the problems of large addition amount, loss of cost advantage of antimony resources, etc. Effect

Active Publication Date: 2013-10-23
广东波斯科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The limiting oxygen index (LOI) of PP is only 18, which is a flammable material. Although the traditional brominated flame retardants are environmentally friendly, the rise in the price of antimony resources has caused the loss of their cost advantages, and the large amount of addition has a certain impact on performance. Influence, and long-term use will corrode the mold and other unfavorable factors have further increased the necessity of halogen-free flame retardant

Method used

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  • Halogen-free flame retardant highlight polypropylene and preparation method thereof

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preparation example Construction

[0048] The same preparation method can be used for the halogen-free flame-retardant high-gloss polypropylene of the embodiment of the present invention, including the following steps:

[0049] S1. Weigh each component according to the following weight percentages:

[0050] Polypropylene 70-85%;

[0051] Ultrafine barium sulfate 15-25%;

[0052] Halogen-free flame retardant 2~3%;

[0053] Nucleating agent 0.2~0.5%;

[0054] Antioxidant 0.3~0.5%;

[0055] Processing aid 0.5~0.8%.

[0056] S2. Mix all the raw materials weighed evenly;

[0057] S3. Add the mixed raw materials into the parallel twin-screw extruder, melt and extrude, and granulate.

[0058] Among them, the process conditions of the melting stage of the parallel twin-screw extruder in the embodiment of the present invention are: the screw diameter of the parallel twin-screw extruder is 35-75 mm; in the temperature control section of the twin-screw machine, the temperature in the first zone is 180° , the temper...

Embodiment 1

[0060] (1) Weigh 82kg homopolymer PP, 15kg superfine barium sulfate, 2kg halogen-free flame retardant, 0.2kg nucleating agent, 10100.1kg, 1680.2kg antioxidant, 0.2kg lubricant EBS, 0.3KG polypropylene wax;

[0061] (2) Mix all the raw materials weighed in a high-speed mixer for 10 minutes;

[0062](3) Put the uniformly mixed material into the hopper of the twin-screw extruder, melt, blend and extrude through the twin-screw extruder, water-cool, air-dry, pelletize, and finally pack into a finished product. Wherein, the screw speed is 250r / min.

[0063] The above-mentioned halogen-free flame-retardant high-gloss PP was injected into a standard sample, and the test performance is shown in Table 1.

Embodiment 2

[0065] (1) Weigh 70.2kg of homopolymer PP, 25kg of superfine barium sulfate, 3kg of halogen-free flame retardant, 0.5kg of nucleating agent, 10100.3kg of antioxidant, 1680.2kg, lubricant EBS0.3kg, polypropylene wax 0.5KG ;

[0066] (2) Mix all the raw materials weighed in a high-speed mixer for 20 minutes;

[0067] (3) Put the uniformly mixed material into the hopper of the twin-screw extruder, melt, blend and extrude through the twin-screw extruder, water-cool, air-dry, pelletize, and finally pack into a finished product. Wherein, the screw speed is 450r / min.

[0068] The above-mentioned halogen-free flame-retardant high-gloss PP was injected into a standard sample, and the test performance is shown in Table 1.

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Abstract

The invention relates to the technical field of thermoplastic high polymer material modification and discloses halogen-free flame retardant highlight polypropylene applied to household appliances, electronics and the like. The halogen-free flame retardant highlight polypropylene comprises the following materials: polypropylene, a nucleating agent, a halogen-free flame retardant, a superfine barium sulphate filling agent, an antioxidant and a processing aid. The invention also discloses a preparation method of the halogen-free flame retardant highlight polypropylene. The invention aims at providing high-glossiness, halogen-free and flame retardant modified polypropylene which can be applied to a bread maker, a water dispenser, a shell of an electric appliance and the like.

Description

technical field [0001] The invention relates to a preparation method of a halogen-free flame-retardant high-gloss polypropylene, which belongs to the technical field of modification of thermoplastic polymer materials. The product of the invention is a high-gloss, halogen-free flame-retardant modified polypropylene, which can be applied to bread machines, water dispensers, electrical shells, and the like. Background technique [0002] Polypropylene is a non-toxic, odorless, tasteless milky white highly crystalline polymer with a density of only 0.90-0.91g / cm -3 , is currently one of the lightest varieties of all plastics. It is particularly stable to water, the water absorption rate in water is only 0.01%, and the molecular weight is about 80,000-150,000. Good formability, but due to the large shrinkage rate (1% to 2.5%), thick-walled products are easy to sag, and it is difficult to meet the requirements for some parts with high dimensional accuracy. To reduce the shrinkage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/02C08K3/30C08K5/09C08K5/103C08K5/526B29C47/92B29C48/92
CPCB29B7/46B29B7/72B29B7/7461B29B9/06B29C48/0022B29C48/022B29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29K2023/12B29K2105/0026C08K3/30C08K5/005C08K5/0066C08K5/0083C08K5/134C08K5/20C08K5/526C08K2003/3045C08L23/12
Inventor 刘鹏郑辉卢俊文
Owner 广东波斯科技股份有限公司
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