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Flame-resistant plastic-wood composite materials and process for preparing same

A technology of wood-plastic composite materials and plastics, which is applied in the field of composites of natural polymer compounds and polyolefin plastics, to achieve the effect of expanding the application range, obvious economic benefits, and broad market prospects

Active Publication Date: 2006-09-27
南京聚新锋新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wood-plastic composite materials produced with PP or PE as the base material account for 80% of the world's total production. So far, there is no patent for its flame retardancy in China.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (A) 32kg of reclaimed polyethylene (PE) resin;

[0030] (B) the wood powder natural fiber of 45kg;

[0031] (C) 12kg degree of polymerization is the ammonium polyphosphate of 4000;

[0032] (D) the pentaerythritol of 2kg;

[0033] (E) melamine of 8kg;

[0034] (F) 1 kg of calcium stearate processing aid.

[0035] The above-mentioned components are used to prepare flame-retardant wood-plastic composite materials through the following process.

[0036] Step 1: After sorting, crushing, drying and removing metal impurities from 32kg of recycled polyethylene (PE) resin, the speed of the mixer is controlled at 400rpm during the standby mixing;

[0037] Step 2: Fully mix 12kg of ammonium polyphosphate, 2kg of pentaerythritol carbon forming agent and 8kg of melamine foaming agent in a mixer. The speed of the mixer is controlled above 400rpm. The time is controlled at 15 minutes;

[0038] Step 3: add the wood powder of 45kg after the ammonium polyphosphate of 12kg, the pen...

Embodiment 2

[0041] (A) 18kg polypropylene (PP) resin new material;

[0042] (B) straw natural fiber of 70kg;

[0043] (C) 7kg degree of polymerization is the ammonium polyphosphate of 20;

[0044] (D) melamine of 3kg;

[0045] (E) Antioxidant 1010 processing aid of 2kg.

[0046] The above-mentioned components are used to prepare flame-retardant wood-plastic composite materials through the following process.

[0047] Step 1: Fully mix 18kg of new polypropylene (PP) resin material directly through a mixer and set it aside for later use. During stirring, the speed of the mixer is controlled at 20rpm;

[0048] Step 2: Fully mix 7kg of ammonium polyphosphate with a degree of polymerization of 20 and 3kg of melamine foaming agent in a mixer, the speed of the mixer is controlled above 400rpm, and the process parameters are: heating temperature: 40°C, mixing time: 30 minutes ;

[0049] Step 3: Add 70kg of stalk natural fiber and antioxidant 1010 after mixing the 18kg polypropylene (PP) resin...

Embodiment 3

[0052] (A) 7kg recycled polyethylene (PE) resin and 8kg polyethylene (PE) resin new material;

[0053] (B) 3kg of bran natural fiber and 2kg of husk natural fiber;

[0054] (C) the degree of polymerization of 20kg is the ammonium polyphosphate of 1000 and the degree of polymerization of 20kg is the ammonium polyphosphate of 3000;

[0055] (D) the pentaerythritol of 10kg and the ethylene glycol of 10kg;

[0056] (E) The melamine of 5kg and the polyamide of 5kg;

[0057] (F) 5 kg of stabilizer UV531 and 5 kg of maleic anhydride grafted polyethylene processing aid.

[0058] The above-mentioned components are used to prepare flame-retardant wood-plastic composite materials through the following process.

[0059]Step 1: After sorting, crushing, drying and removing metal impurities, the recycled 7kg polyethylene (PE) resin is fully mixed by a mixer, and mixed with 8kg of new polyethylene (PE) resin material. Mix well, and the mixer speed is controlled at 200rpm when stirring;

...

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PUM

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Abstract

The invention provides a flame-proof plastic-wood composite material, which is prepared from the following constituents: (1) 15-32 wt% of plastic, (2) 5-70 wt% of natural fiber, (3) 7-40 wt% of polyphosphoric ammonium with a molecular formula of (NH4)n+2PnO3n+1, (4) 0-20 wt% of carbon-forming agent, (5) 3-10 wt% of foaming agent, (6) 1-10 wt% of processing auxiliary agent through mixing, agitating, melting and squeezing.

Description

technical field [0001] The invention belongs to the compound of natural polymer compound and polyolefin plastic, and belongs to the technical field of composite materials. Background technique [0002] Wood-plastic composite material is a new type of material developed in recent years. It uses various waste natural fibers and recycled plastics (PE or PP) to compound to produce various profiles of different cross-sections, which are widely used in gardens. Construction, transportation, decoration and other industries. Since natural fibers, PE or PP plastics are all flammable substances, the wood-plastic composite material itself is also very easy to burn. Generally, the oxygen index is only 17%-19%, and it cannot self-extinguish after catching fire. This makes it limited in application and can only be applied outdoors or near water. [0003] For wood-plastic composite materials with flame-retardant requirements, the flame-retardant characteristics of polyvinyl chloride are ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L97/02B29B9/12B29C47/40
Inventor 温原戴东花丁建生吴汾
Owner 南京聚新锋新材料有限公司
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