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PP/PA composite material for automobile interior and exterior and preparation method of PP/PA composite material

A technology for automotive interior and exterior decoration and composite materials, applied in the field of PP/PA composite materials, can solve the problems of easy moisture absorption, high cost, waste of energy, etc., achieve improved scratch resistance, improved mechanical properties, and solve the problem of scratch resistance Effect

Active Publication Date: 2015-04-01
重庆嘉良塑胶制品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] PP / PA materials are water-absorbent, and injection molding manufacturers must dry the materials when injecting products, which increases costs and wastes energy
And the compatibility of PP / PA materials is poor, simply blending the two materials, the mechanical properties of the materials are very poor, it cannot be popularized and applied, and the cost is high
At present, PP / PA materials use non-environmentally friendly flame retardants, such as halogenated flame retardants, which are very harmful to the human body and the environment; and some intumescent flame retardants are easy to absorb moisture, have poor aging performance, and are difficult to recycle. question

Method used

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  • PP/PA composite material for automobile interior and exterior and preparation method of PP/PA composite material
  • PP/PA composite material for automobile interior and exterior and preparation method of PP/PA composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Preparation of grafts: First dissolve 2kg MAH and 0.1kg DCP with 500ml acetone, add 0.4g antioxidant 1010 powder into 100kg dried block copolymerized polypropylene pellets, stir and mix evenly, pass through twin-screw The extruder is extruded and granulated at 140°C to obtain polypropylene grafted maleic anhydride (PP-g-MAH).

[0025] 2. Modification of talc powder: Add 10kg of talc powder into the high mixing pot, stir at high speed, heat up to 80°C, add 0.3kg of phosphate ester surfactant, continue to heat up to 120°C, unload, and stand for 24 hours for use.

[0026] 3. Preparation of filling masterbatch: 60kg of block copolymerized polypropylene and 1kg of modified talc powder are pre-mixed, mixed, melted and granulated by mixing equipment, and the processing temperature is 160°C.

[0027] 4. Preparation of montmorillonite compound flame retardant: prepared by melt blending 6kg polyphosphoric acid, 2kg pentaerythritol, 2kg melamine and 0.5kg montmorillonite at 120...

Embodiment 2

[0031] 1. Preparation of grafts: first dissolve 3kg MAH and 0.2kg DCP with 800ml acetone, add 0.2g antioxidant 1010 powder into 100kg dried block copolymerized polypropylene pellets, stir and mix evenly, pass through double The screw extruder extruded and granulated at 160°C to obtain polypropylene grafted maleic anhydride (PP-g-MAH).

[0032] 2. Modification of talc powder: Add 10kg of talc powder into a high mixing pot, stir at high speed, heat up to 80°C, add 0.2kg of phosphate ester surfactant, continue to heat up to 120°C, unload, and stand for 24 hours for use.

[0033] 3. Preparation of filling masterbatch: Pre-mix 80kg of block copolymerized polypropylene and 4kg of modified talcum powder, and then knead and melt to granulate through mixing equipment. The processing temperature is 240°C.

[0034] 4. Preparation of montmorillonite compound flame retardant: 16.36kg of polyphosphoric acid, 5.45kg of pentaerythritol, 8.18kg of melamine and 2.5kg of montmorillonite were pre...

Embodiment 3

[0038]1. Preparation of grafts: First dissolve 4kgMAH and 0.4kg DCP with 1000ml acetone, add 0.3g antioxidant 168 powder into 100kg dried block copolymerized polypropylene pellets, stir and mix evenly, pass through twin-screw The extruder is extruded and granulated at 180°C to obtain polypropylene grafted maleic anhydride (PP-g-MAH).

[0039] 2. Modification of talc powder: Add 10kg of talc powder into a high mixing pot, stir at high speed, heat up to 80°C, add 0.5kg of phosphate ester surfactant, continue to heat up to 120°C, unload, and stand for 24 hours for use.

[0040] 3. Preparation of filling masterbatch: pre-mix 70kg of block copolymerized polypropylene and 2.5kg of modified talcum powder, and mix and melt granulate through mixing equipment, and the processing temperature is 200°C.

[0041] 4. Preparation of montmorillonite compound flame retardant: 11.54kg of polyphosphoric acid, 3.85kg of pentaerythritol, 4.62kg of melamine and 1.5kg of montmorillonite were prepared...

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Abstract

The invention discloses a PP / PA composite material for automobile interior and exterior and a preparation method of the PP / PA composite material. The PP / PA composite material comprises the following components in parts by weight: 60-80 parts of polypropylene, 20-40 parts of polyamide, 1-4 parts of modified talcum powder, 3-5 parts of a grafting compatilizer, 0.5-1 part of a flowing modifier, 0.2-0.4 part of an antioxidant, 0.2 part of a light stabilizer, 0.5-2.5 parts of montmorillonite, 10-30 parts of an inrumescent flame retardant and 1-4 parts of a coloring agent, wherein the grafting compatilizer is polypropylene grafted maleic anhydride. The preparation method comprises the following steps: firstly, mixing the compounded inrumescent flame retardant and montmorillonite in a melt blending mode, carrying out mixing and melting granulating on modified talcum powder and polypropylene in advance, feeding the two mixtures together with other components into a mixing pot in different batches, mixing uniformly, carrying out extrusion pelletizing by using a double-screw extruder, thereby preparing the PP / PA composite material. By adopting the PP / PA composite material, the problem of water absorption of a conventional PP / PA composite material is solved, the wear resistance, the anti-aging property and the flame retardancy of the conventional PP / PA composite material are improved, the service life of the PP / PA composite material is prolonged, and the security coefficient of the PP / PA composite material is increased.

Description

technical field [0001] The invention relates to a composite material, in particular to a PP / PA composite material used for interior and exterior decoration of automobiles. Background technique [0002] Nylon is an important engineering plastic. It has high strength, small friction coefficient, excellent wear resistance and oil resistance, good chemical stability, self-lubrication, insulation, self-extinguishing and other excellent properties. It has excellent processing flow properties and is widely used in Automotive, electrical and electronic, machinery and construction industries. However, due to the presence of amide polar groups in nylon, it has strong water absorption, low low-temperature toughness, and poor dimensional stability, so its application is limited; in addition, PA6 has low low-temperature impact strength and insufficient dry toughness. Creep performance also needs to be improved. Polypropylene (PP) is easy to process, heat-resistant, has low water absorp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/00C08L77/02C08L51/06C08K13/06C08K9/04C08K3/34C08K3/32C08K5/053C08K5/3492C08K5/134C08J3/22
Inventor 陈丹程彬
Owner 重庆嘉良塑胶制品有限责任公司
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