A method for continuously preparing multilayer plates of polymer composite materials

A sheet and core layer technology, which is applied in the field of continuous preparation of multilayer sheets of polymer composite materials, can solve the problems of endangering the personal health of production workers, low production efficiency, pollution, etc., and achieve high production efficiency, increase production efficiency, and reduce costs. Effect

Active Publication Date: 2012-02-08
申悦生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the casting method not only seriously endangers the personal health of production workers in the production process due to the large use of solvents, but also causes a lot of pollution.
However, the method of melting calendering mainly adopts a multi-step method in China at present, and finally obtains a composite plate through discontinuous multiple steps, so the production efficiency is low.

Method used

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  • A method for continuously preparing multilayer plates of polymer composite materials
  • A method for continuously preparing multilayer plates of polymer composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, continuous production five-layer composite polypropylene laminated board

[0017] The structure of the five-layer composite PP laminate is as follows figure 1 As shown, from top to bottom are the upper skin layer 1, the upper core layer 2, the inner core layer 3, the lower core layer 4 and the lower skin layer 5. Wherein, the upper core layer 2 and the lower core layer 4 are reinforced grid cloth.

[0018] Evenly feed polypropylene (PP) into the extruder at a speed of 20kg / min for plasticizing processing. The processing temperature of the extruder is 160-220°C (heating the solid state into a viscous fluid state); after plasticizing, it is extruded The machine is continuously extruded into the plate mold, and the temperature of the mold is 140-160°C (to change the viscous flow state into a high elastic state), and extrude from the plate mold to obtain a high elastic state polypropylene (PP) sheet after molding. Then, the high elastic state polypropylene (...

Embodiment 2

[0021] Embodiment 2, continuous production five-layer composite polypropylene laminated board

[0022] The structure of the five-layer composite PP laminate is as follows figure 1 As shown, from top to bottom are the upper skin layer 1, the upper core layer 2, the inner core layer 3, the lower core layer 4 and the lower skin layer 5. The upper core layer 2 and the lower core layer 4 are reinforced grid cloth.

[0023] Evenly feed polypropylene (PP) into the extruder at a speed of 20kg / min for plasticizing processing. The processing temperature of the extruder is 160-220°C (heating the solid state into a viscous fluid state); after plasticizing, it is extruded The machine is continuously extruded into the plate mold, and the temperature of the mold is 140-160°C (to change the viscous flow state into a high elastic state). After molding, it is extruded from the plate mold to obtain a high elastic polypropylene (PP) sheet. An elastic polypropylene (PP) sheet is used as the inne...

Embodiment 5

[0036] Embodiment 5, polyethylene is the preparation of the five-layer composite polypropylene laminate of upper and lower cortex

[0037] The structure of the five-layer composite polypropylene laminate is as follows figure 1 As shown, from top to bottom are the upper skin layer 1, the upper core layer 2, the inner core layer 3, the lower core layer 4 and the lower skin layer 5. Wherein, the upper core layer 2 and the lower core layer 4 are reinforced grid cloth.

[0038] Evenly feed polypropylene (PP) into the extruder at a speed of 20kg / min for plasticizing processing. The processing temperature of the extruder is 160-220°C (heating the solid state into a viscous fluid state); after plasticizing, the polypropylene is formed The extruder is continuously extruded into the plate mold, and the temperature of the mold is 140-160°C (to change the viscous fluid state into a high elastic state). After forming, extrude from the plate mold to obtain a high elastic polypropylene (PP)...

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Abstract

The invention discloses a method for continuously preparing multilayer plates. The method comprises the following steps, and each step is uninterrupted: 1) pressing the material of the following a) or b) or c) into a core layer; wherein, said a) is resin and grid cloth, and said b) is resin, foaming agent, processing aid and grid cloth, and c) is non-woven fabric; 2) the core layer advances at a certain speed, and during the advancement process, the upper surface of the core layer and The lower surface is coated and calendered with resin and grid cloth separately or simultaneously or alternately coated and calendered with resin and grid cloth multiple times to obtain the multi-layer plate. The method for preparing the polymer composite material multi-layer plate provided by the invention is simple and easy, has high production efficiency and no solvent pollution. At the same time, waste and old polymer materials are used as raw materials, which not only reduces costs, protects the environment, but also realizes the recycling of raw materials.

Description

technical field [0001] The invention relates to a method for continuously preparing multi-layer boards of polymer composite materials. Background technique [0002] Combining polymer materials with other materials, or combining polymer materials with each other, the polymer sheet prepared not only greatly improves its strength and performance, but also expands its application field. At present, there are mainly two methods for preparing polymer sheets: casting and melt calendering. Among them, the method of tape casting not only seriously endangers the personal health of production workers, but also causes a lot of pollution due to the large amount of solvent used in the production process. As for the melt calendering method, at present, the multi-step method is mainly adopted in China, and the composite sheet is finally obtained through discontinuous multiple steps respectively, so the production efficiency is low. For example, in the current preparation process of PVC co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/70B29L9/00B29L7/00B29K709/08B29K705/00B29K101/00
Inventor 孙建宁
Owner 申悦生物科技有限公司
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