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Cocoanut fiber reinforced polypropylene complex and preparation method thereof

A technology of coconut shell fiber and polypropylene, which is applied in the field of composites and its preparation, can solve problems such as difficulty in obtaining suitable treatment methods, and achieve the effects of easy treatment, cost reduction, and increased content

Inactive Publication Date: 2011-06-29
SHANGHAI SUNNY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, glass fiber reinforced plastics have excellent heat resistance and mechanical properties, but it is difficult to obtain suitable treatment methods after use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0029] (1) Prepare raw materials according to the following components: polypropylene, coconut shell fiber, compatibilizer, antioxidant, lubricant, wherein polypropylene is copolymerized polypropylene, and the length of coconut shell fiber is 1-3mm, and the compatibilizer is polypropylene The oligomer of propylene grafted unsaturated acid, the melt index of the compatibilizer is 40-150g / 10min, the grafting rate is 0.5-1%, the antioxidant is a compound of antioxidant 1010 and antioxidant 168, The lubricant is stearic acid amide TAF, and the content of each raw material is shown in Table 1.

[0030] (2) Pretreatment of coconut fiber: first dissolve o-aminophenol in 0.5mol / L hydrochloric acid, then mix with 1mol / L NaNO in an ice-water bath below 5°C 2 Mix to prepare o-chlorodiazophenol solution; then immerse the cleaned and dried coconut shell fiber (its humidity is only 1-2%) into a 5% NaOH ice-water bath with a temperature lower than 5°C for 10 minutes; Slowly add o-chlorodiaz...

Embodiment 3

[0041] A preparation method of coconut shell fiber reinforced polypropylene composite, the method may further comprise the steps:

[0042] (1) Prepare raw materials according to the following components and contents: 52kg polypropylene, 40kg coconut fiber, 3kg compatibilizer, 0.1kg antioxidant, 0.1kg lubricant, wherein polypropylene is block polypropylene, and compatibilizer is The oligomer of polypropylene grafted unsaturated acid anhydride, the melt index of compatibilizer 150g / 10min, graft rate 0.5%, antioxidant is that antioxidant 1010 and antioxidant 168 are formed by weight ratio 1:1 Compound, the lubricant is stearic acid amide TAF.

[0043] (2) Treatment of coconut shell fiber: first dissolve o-aminophenol in 0.5mol / L hydrochloric acid, and then mix with 1mol / L NaNO in an ice-water bath below 5°C 2 Mix to prepare o-chlorodiazophenol solution; then through cleaning and drying, the coconut shell fiber with a humidity of 1-2% is immersed in a NaOH ice-water bath with a c...

Embodiment 4

[0046] A preparation method of coconut shell fiber reinforced polypropylene composite, the method may further comprise the steps:

[0047] (1) Prepare raw materials according to the following components and contents: 85kg polypropylene, 10kg coconut fiber, 8kg compatibilizer, 1kg antioxidant, 1kg lubricant, wherein polypropylene is block polypropylene, and compatibilizer is polypropylene The oligomer of grafted unsaturated acid anhydride, the melt index of compatibilizer 100g / 10min, graft rate 0.8%, antioxidant is the composite of antioxidant 1010 and antioxidant 168 by weight ratio 2: 1 composition The lubricant is stearic acid amide TAF.

[0048] (2) Treatment of coconut shell fiber: first dissolve o-aminophenol in 0.5mol / L hydrochloric acid, and then mix with 1mol / L NaNO in an ice-water bath below 5°C 2 Mix to prepare the o-chlorodiazophenol solution; then through cleaning and drying, the coconut shell fiber with a humidity of 1-2% is immersed in a NaOH ice-water bath with...

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Abstract

The invention relates to a cocoanut fiber reinforced polypropylene complex and a preparation method thereof. The complex comprises the following components in percentage by weight: 52 to 85 percent of polypropylene, 10 to 40 percent of cocoanut fibers, 3 to 8 percent of compatilizer, 0.1 to 1 percent of antioxidant and 0.1 to 1 percent of lubricant. The preparation method comprises the following steps of: dissolving ortho-aminophenol in hydrochloric acid, and mixing the solution and NaNO2 to obtain ortho-cloro diazo phenol solution; soaking the cocoanut fibers in ice water bath of NaOH; dropwise adding ortho-cloro diazo phenol solution into the ice water bath of NaOH; taking out the cocoanut fibers and drying the cocoanut fibers in the air; mixing the treated cocoanut fibers and the other raw materials; and adding the mixture in a screw extrusion machine, and extruding and pelleting the mixture to obtain the product. When the preparation method is compared with the prior art, the cost of the raw materials is further reduced. Due to the introduction of the cocoanut fibers, plastic fittings used for vehicles and prepared from the material are easier to recycle and treat.

Description

technical field [0001] The invention relates to a composite and a preparation method thereof, in particular to a coconut shell fiber reinforced polypropylene composite and a preparation method thereof. Background technique [0002] With the introduction of new concepts such as "green, ecology, and environmental protection", people have put forward higher requirements for traditional reinforcement materials. For example, glass fiber reinforced plastics have excellent heat resistance and mechanical properties, but it is difficult to obtain a suitable treatment method after use. Due to many environmental problems, the recycling and processing of many traditional reinforced plastics has attracted widespread attention. For this reason, people have turned their attention to natural fibers with low density and abundant sources, such as jute, wood fiber, coconut fiber, etc., as reinforcing materials for synthetic resins. Compared with glass fiber, natural fiber has many advantages...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L53/00C08L97/02C08L51/06
Inventor 陈晓东杨艳孟成铭项军
Owner SHANGHAI SUNNY
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