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Composite board based on mixed waste polymers and preparation method thereof

A composite plate and polymer technology, applied in the field of polymer composite materials, can solve the problems of large compatibility differences of mixed waste plastics, low product performance, and impact on polymer product performance, so as to avoid delamination, improve performance, Effect of reducing molecular agglomeration phenomenon

Inactive Publication Date: 2011-10-26
佛山市南海承骏科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for small-sized mixed waste polymers, since these mixed polymers may contain thermoplastics such as PE, PP, ABS, HIPS, PVC, PET, POM, PPO, PC, PMM, etc., thermoplastic elastomers such as TPE, TPU , TPR, etc., contain thermosetting plastics such as phenolic resin, epoxy resin, etc., contain highly cross-linked rubber, and may also contain a small amount of impurities such as sediment, iron filings, paper scraps, etc. Thermoplastic processing for recycling
Many recycled plastic processing plants in my country have accumulated a large amount of such small waste polymers that cannot be effectively processed, resulting in waste of resources and environmental pollution.
[0004] Nowadays, most of the processing methods for mixed waste plastics are used as fuel for thermal power stations, and heat is provided by incineration, but the combustion produces a large amount of exhaust gas and dust, which causes serious pollution to the surrounding environment
It is also possible to grind such waste polymers into powder, and then prepare fillers for the preparation of polymer materials through surface modification and activation. However, due to the large difference in compatibility of mixed waste plastics, it has great impact on the performance of final polymer products. Serious impact, not widely used due to low product performance

Method used

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  • Composite board based on mixed waste polymers and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Take mixed waste polymer powder 60.0kg by weight ratio, waste polymer powder contains 68% PE, 30% ABS and 2% impurities such as silt, paper scraps, metal chips, wood powder 20.0 kg, unsaturated 10.0 kg of polyester resin, 2.0 kg of styrene, 1.5 kg of ethylene glycol, 6.0 kg of PE wax, 0.5 kg of antioxidant 1010 and PX802 (mass ratio 1:1). The mixed material is placed in a high mixer, at 40 o Under the condition of C, mix 20 minutes under the speed of 2000 revs per minute, be down to room temperature and discharge; The above-mentioned mixed material is packed in the mould, at 180 o C. Vulcanize under the condition of 10MPa for 10 minutes, cool down, release the pressure and take it out to get the mixed waste polymer matrix composite board. The mechanical properties of the prepared composite material are shown in Table 1. It can be seen that the composite plate prepared by this method has good impact resistance, bending resistance and tensile performance, and has reliabl...

Embodiment 2

[0039] Weigh 80.0kg of mixed waste polymer according to the weight ratio, waste polymer powder contains 75% PP, 25% PVC, 5.0kg superfine kaolin, 10.0kg epoxy resin, 4,4'-diphenylmethane diamine 2.0kg, polyethylene glycol 100 0.5kg, calcium stearate 2.0kg, 1790 and DSTDP total 0.5kg (mass ratio 1:1). Put the mixed material in the high mixer, at 60 o Under the condition of C, mix at 800 rpm for 30 minutes, drop to room temperature and discharge. The above-mentioned homogeneously mixed material is packed into the mould, at 150 o C. Vulcanize under the condition of 15MPa for 20 minutes, cool down, release the pressure and take it out to get the mixed waste polymer matrix composite board.

Embodiment 3

[0041] Take mixed waste polymer 70.0kg by weight ratio, waste polymer powder contains 40% PP, 5% PVC, 50% PET and 5% impurities such as silt, paper scraps, metal scraps, ultrafine carbonic acid Calcium 8.0 kg, urea-formaldehyde resin 12.0 kg, hexamethylenetetramine 3.0 kg, polyethylene glycol 6000 1.0 kg, silicone oil 5.0 kg, antioxidant AT-10 and DLTP total 1kg (mass ratio 1:1). Put the mixed material in the high mixer, at 50 o Under C conditions, mix at 1200 rpm for 25 minutes, drop to room temperature and discharge. The above-mentioned homogeneously mixed material is packed into the mould, at 160 o C. Vulcanize under the condition of 12MPa for 15 minutes, cool down, release the pressure and take it out to get the mixed waste polymer matrix composite board.

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Abstract

The present invention discloses a composite board based on mixed waste polymers and a preparation method thereof. The preparation method of the composite board based on the mixed waste polymers is characterized by comprising the following steps of: (1) weighing the raw materials according to a certain proportion, adding the raw materials to a high-speed mixer, mixing at the temperature of 40-60 DEG C and the rotation speed of 800-2000 rpm for 20-30 minutes, cooling to room temperature and discharging; and (2) adding the mixed material to a mold, vulcanizing at the temperature of 150-180 DEG C and the pressure of 10-15 MPa for 10-20 minutes, cooling and relieving pressure. The composite board based on the mixed waste polymers provided by the invention does not need to consider the complex compatibility and plasticizing problems of multiple polymers, effectively solves the problems that the existing mixed waste polymers can not be classified and are discarded, and can be used as the substitute for wood to be applied in the tray manufacturing field and other fields. The production process provided by the invention is simple, uses existing equipment and is suitable for mass production.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a method for preparing composite boards by using mixed waste polymers. Background technique [0002] The blending of different polymers is one of the most simple and practical methods to prepare new materials. However, because different polymers have different chemical compositions and physical structures, there are significant differences in processing performance and compatibility, so not all polymers can be blended at present. Due to the large difference in processing temperature between polymers with low plasticizing processing temperature and polymers with high plasticizing processing temperature, useful materials cannot be obtained through plasticizing and melting processing; and between polar polymers and non-polar polymers, especially at the same time Polymers with different polarities and different crystallinity, due to poor interfacial c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L55/02C08L51/00C08L27/06C08L67/02C08L69/00C08L33/12C08L71/12C08L59/04C08L21/00C08L67/06C08L63/00C08L61/06C08L61/24C08L61/28C08L97/02C08K3/26C08K3/34C08K3/36C08K7/14
Inventor 何礼俊石光何伟成
Owner 佛山市南海承骏科技有限公司
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