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A flame-retardant, easy-to-weld and pressure-resistant polypropylene material and its preparation method and application

A polypropylene material and polypropylene technology are applied in the field of flame-retardant, easy-to-weld and pressure-resistant polypropylene materials and their preparation fields, which can solve the problems of poor pressure resistance, difficult welding, welding sticky materials, etc., so as to improve the pressure resistance performance. , The effect of improving rheological properties and optimizing welding performance

Active Publication Date: 2018-03-06
TIANJIN KINGFA NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ordinary glass fiber reinforced polypropylene materials currently on the market have problems such as floating fibers in appearance, poor pressure resistance, not easy to weld, easy to seepage at the weld joint, and welding sticky material
Lithium-ion batteries may have a high ambient temperature and self-heating during use, and there is a risk of ignition. Therefore, the flame retardancy of the shell material is required. However, generally reinforced polypropylene materials do not have flame retardancy. Its use Range is also limited

Method used

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  • A flame-retardant, easy-to-weld and pressure-resistant polypropylene material and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A flame-retardant, easy-to-weld and pressure-resistant polypropylene material, its preferred component raw material formula is shown in Table 1, and its preparation method includes the following steps: uniformly mixing the above-mentioned raw materials, and then feeding them from the main feeding port of the extruder The raw material is melted, extruded and granulated in an extruder to obtain the flame-retardant, easy-to-weld and pressure-resistant polypropylene material of the present invention. The pellets were injection molded into corresponding samples for testing, and the test results are shown in Table 2.

[0024] Among them, polypropylene is a mixture of high crystalline polypropylene, homopolypropylene and copolymerized polypropylene in a mass ratio of 1:1:1, and the melt flow rate is 0.5-5g / 10min (230°C, 2.16kg). The glass fiber is chopped glass fiber with a length of 0.2-10 mm and a diameter of 8-20 μm. The compatibilizer is polypropylene grafted maleic anhyd...

Embodiment 2

[0026] A flame-retardant, easy-to-weld and pressure-resistant polypropylene material, its preferred component raw material formula is shown in Table 1, and its preparation method includes the following steps: uniformly mixing the above-mentioned raw materials, and then feeding them from the main feeding port of the extruder The raw material is melted, extruded and granulated in an extruder to obtain the flame-retardant, easy-to-weld and pressure-resistant polypropylene material of the present invention. The pellets were injection molded into corresponding samples for testing, and the test results are shown in Table 2.

[0027] Among them, polypropylene is a mixture of high crystalline polypropylene, homopolypropylene and copolymerized polypropylene in a mass ratio of 1:1:1, and the melt flow rate is 0.5-5g / 10min (230°C, 2.16kg). The glass fiber is chopped glass fiber with a length of 0.2-10 mm and a diameter of 8-20 μm. The compatibilizer is polypropylene grafted maleic acid....

Embodiment 3

[0029] A flame-retardant, easy-to-weld and pressure-resistant polypropylene material, its preferred component raw material formula is shown in Table 1, and its preparation method includes the following steps: uniformly mixing the above-mentioned raw materials, and then feeding them from the main feeding port of the extruder The raw material is melted, extruded and granulated in an extruder to obtain the flame-retardant, easy-to-weld and pressure-resistant polypropylene material of the present invention. The pellets were injection molded into corresponding samples for testing, and the test results are shown in Table 2.

[0030] Among them, polypropylene is a mixture of high crystalline polypropylene, homopolypropylene and copolymerized polypropylene in a mass ratio of 1:1:1, and the melt flow rate is 0.5-5g / 10min (230°C, 2.16kg). The glass fiber is chopped glass fiber with a length of 0.2-10 mm and a diameter of 8-20 μm. The compatibilizer is polypropylene grafted maleic acid....

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Abstract

The invention provides a flame-retardant, easy-welding and pressure-resistant polypropylene material and its preparation method and application. The preparation raw materials include: polypropylene 35-60.9%, mineral filler 3-7.5%, glass fiber 15-20%, 5% of grafted polypropylene, 15-35% of brominated flame retardant, 1-10% of flame-retardant synergist, and 0.1-2.5% of processing aid, the percentages are mass percentages. The flame-retardant, easy-welding and pressure-resistant polypropylene material of the present invention utilizes the strengthening effect of glass fibers and mineral fillers, and effectively improves the material pressure resistance by increasing the interface bonding strength between polypropylene and fillers; by adding an appropriate content Processing aids and screening of suitable polypropylene materials to improve the rheological properties of the material, thereby optimizing the welding performance of the material, making it easy to weld, high welding strength, and impervious to liquids; by selecting a suitable flame retardant system, endowed with The material is flame retardant, and its flame retardant grade can reach UL94 V‑0 grade.

Description

technical field [0001] The invention belongs to the technical field of modified plastics, and in particular relates to a flame-retardant, easy-to-weld and pressure-resistant polypropylene material and its preparation method and application. Background technique [0002] Glass fiber reinforced polypropylene has the advantages of high mechanical strength, good heat resistance, chemical corrosion resistance, dimensional stability, etc. It is widely used in household appliances, automobiles, machinery and other fields. The strength and modulus of glass fiber reinforced polypropylene are comparable to engineering plastics, which further expands the application prospects of reinforced polypropylene. Compared with other polymer lithium-ion battery shell materials, glass fiber reinforced PP has obvious cost advantages, and has good comprehensive performance, good solvent resistance, strong toughness, stable properties, and certain advantages in impact resistance and pressure resista...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08L51/06C08K13/04C08K7/14C08K5/06C08K3/22C08K5/03C08K3/38H01M2/02H01M50/122H01M50/143
CPCC08L23/12C08L2201/02C08L2203/20C08L2205/025C08L2205/035C08K2201/004C08K2201/003C08L23/14C08L51/06C08K13/04C08K7/14C08K5/06C08K3/2279C08K5/03C08K2003/387
Inventor 李聪陶四平肖鹏陈国雄叶茂张自会赵盼虎郭丽媛
Owner TIANJIN KINGFA NEW MATERIAL