Method for continuously preparing polymer composite multilayer plates

A sheet and core layer technology, applied in the field of continuous preparation of polymer composite multi-layer sheets, can solve the problems of harming the health of production workers, low production efficiency, pollution, etc., and achieve high production efficiency, improve production efficiency, and reduce costs. Effect

Active Publication Date: 2009-12-09
孙建宁
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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.
Howeve

Method used

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  • Method for continuously preparing polymer composite multilayer plates
  • Method for continuously preparing polymer composite multilayer plates

Examples

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Example Embodiment

[0016] Example 1. Continuous production of five-layer composite polypropylene laminate

[0017] The structure of the five-layer composite PP laminate is as figure 1 As shown, from top to bottom, it is an upper skin layer 1, an upper core layer 2, an inner core layer 3, a lower core layer 4, and a lower skin layer 5. Among them, the upper core layer 2 and the lower core layer 4 are reinforced mesh fabrics.

[0018] The polypropylene (PP) is uniformly fed into the extruder at a speed of 20kg / min for plasticization processing. The processing temperature of the extruder is 160-220℃ (the solid state is heated to a viscous fluid state); after plasticization, it is extruded The machine continuously extrudes into the sheet mold, the temperature of the mold is 140-160°C (changes the viscous fluid state into a highly elastic state), and extrudes from the sheet mold to obtain a highly elastic polypropylene (PP) sheet after molding. Then, the highly elastic polypropylene (PP) sheet is cooled...

Example Embodiment

[0021] Example 2: Continuous production of five-layer composite polypropylene laminate

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

[0023] The polypropylene (PP) is uniformly fed into the extruder at a speed of 20kg / min for plasticization processing. The processing temperature of the extruder is 160-220℃ (the solid state is heated to a viscous fluid state); after plasticization, it is extruded The machine continuously extrudes into the sheet die, the temperature of the mold is 140-160℃ (changes the viscous fluid state into a highly elastic state), after molding, extrudes from the sheet die to obtain a highly elastic polypropylene (PP) sheet. The elastic polypropylene (PP) sheet serves as the inner core layer. Then the i...

Example Embodiment

[0036] Example 5. Preparation of a five-layer composite polypropylene laminate with polyethylene as the upper and lower skin layers

[0037] The structure of the five-layer composite polypropylene laminate is as figure 1 As shown, from top to bottom, it is an upper skin layer 1, an upper core layer 2, an inner core layer 3, a lower core layer 4, and a lower skin layer 5. Among them, the upper core layer 2 and the lower core layer 4 are reinforced mesh fabrics.

[0038] The polypropylene (PP) is uniformly fed into the extruder at a speed of 20kg / min for plasticization processing. The processing temperature of the extruder is 160-220℃ (the solid state is heated to a viscous fluid state); the polypropylene is plasticized by The extruder continuously extrudes into the sheet mold, the temperature of the mold is 140-160℃ (changes the viscous fluid state into a highly elastic state), after forming, extrudes from the sheet mold to obtain a highly elastic polypropylene (PP) sheet. The pol...

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Abstract

The invention discloses a method for continuously preparing multilayer plates. The method comprises the following steps without being interrupted: (1) a material (a), (b) or (c) is pressed to form a sandwich layer, wherein the material (a) is resin and gridding cloth, the material (b) is resin, foaming agent, processing aid and gridding cloth, and the material (c) is non-woven cloth; (2) the sandwich layer advances with a certain velocity, and during the advancing process, the upper surface and the lower surface of the sandwich layer are respectively or simultaneously coated or rolled by the resin and the gridding cloth or are alternately coated or rolled by the resin and the gridding cloth time after time to obtain the multilayer plates. The method for preparing the polymer composite multilayer plates is simple to realize, and has high production efficiency without solvent pollution. By taking waste polymer materials as the raw materials, the invention reduces the cost, protects the environment and realizes the cyclic utilization of the 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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IPC IPC(8): B29C70/70B29K101/00B29K705/00B29K709/08B29L7/00B29L9/00
Inventor 孙建宁
Owner 孙建宁
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