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Method for producing non-metal self-heatable molds

A metal heat and mold technology, applied in the direction of coating, etc., can solve the problems of early degradation of metal layer due to chemical erosion heat loss, unsuitable for products with holes, complex manufacturing process, etc., to achieve good mold surface temperature uniformity, chemical erosion prevention , the effect of reducing heat loss

Inactive Publication Date: 2016-04-06
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mold-preparation method described in JP62257819A has the following disadvantages: (1) the metal layer used is laid on the mold surface, which can lead to undue rapid heat loss and premature degradation of the metal layer due to chemical attack and premature wear; 2) The heating medium is listed only for fluid heating including design, operation, and maintenance complexities; and (3) Metal layers are not suitable for perforated products
The panel-building method described in U.S. Patent No. 3,827,667 has the following disadvantages: (1) sheet metal or panels are laid on the panel surface; (2) the loose material of the back layer is ceramic (such materials as Portland cement, Pourable various ceramic materials of known composition, stucco and cellular plastic, stucco, etc.); and (3) heat transfer channels limited to fluid
Flame spraying (mold-forming method described in JP5192931A) has disadvantages: the metal layer must be flame-sprayed onto the mold surface; dust and smoke
However, WO2009007077A1 has the following disadvantages: (1) the mold body is made of ceramics, which are brittle and weak in tension and shear; and the mold body can also have a porous mold surface; (2) the manufacturing process of the ceramic mold Complex and expensive; and (3) the mold does not incorporate metal layers to improve mold surface temperature uniformity
None of the prior art methods involve inserting a metal layer below the outermost mold surface layer

Method used

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  • Method for producing non-metal self-heatable molds
  • Method for producing non-metal self-heatable molds
  • Method for producing non-metal self-heatable molds

Examples

Experimental program
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preparation example Construction

[0044] The preparation of the curable formulation and / or any of its steps may be a batch or continuous process. The mixing equipment used in this method can be any vessel and auxiliary equipment known to those skilled in the art.

[0045]The method of curing the curable composition can be performed by a conventional method well known to those skilled in the art. For example, in one embodiment curing may be performed at a predetermined temperature, typically from about 10°C to about 300°C; in another embodiment at a temperature from about 10°C to about 200°C; and in yet another embodiment Examples are carried out at temperatures from about 25°C to about 150°C. In one embodiment, curing may be performed for a predetermined period of time, such as typically from about 1 minute to about 1 week, in another embodiment from about 10 minutes to about 2 days, and in yet another embodiment about 1 hour to about 24 hours. For periods of less than about 1 minute, the time may be too sh...

example 1 and comparative example A

[0095] The first multilayer mold structure was prepared by the following general method:

[0096] (1) Applying one or more composite surface layers 2 mm thick into the master mold via injection molding;

[0097] (2) applying one or more thermally conductive adhesive layers adjacent to one or more layers of step (1) with a spatula;

[0098] (3) Manually stacking one or more 1mm thick aluminum sheet layers adjacent to one or more layers of step (2);

[0099] (4) Manually stacking one or more fabric layers adjacent to one or more layers of step (3);

[0100] (5) manually stacking one or more nonwoven fiber mat layers adjacent to one or more layers of step (4);

[0101] (6) manually stacking one or more heating layers with holes adjacent to one or more layers of step (5);

[0102] (7) Manually stacking one or more fabric layers adjacent to one or more layers of step (6);

[0103] (8) Manually stacking one or more porous foam core material layers adjacent to one or more layers ...

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Abstract

A multi-layered composite mold structure (10) is provided. The multi-layered composite mold structure (10) comprises a multi-layered member including (a) at least one metal heating layer (11); (b) at least one metal heat distribution layer (13); (c) at least one laminate composite layer (12); and (d) a surface layer (14). A process for preparing the multi-layered composite mold structure is also provided.

Description

technical field [0001] The present invention relates to a method for making a non-metallic mold; and more particularly, the present invention relates to a method for making a non-metallic mold that provides high surface temperature uniformity when said mold is used to make a heat-curable composite part Methods. The invention may be used, for example, in processes for the production of wind rotor blades, locomotive components, yacht hulls, aircraft wing panels, and the like. Background technique [0002] To date, two types of molds, one made of metal and the other of non-metallic materials, have been used in infusion / injection molding for the production of fiber-reinforced composite parts such as wind rotor blades or locomotive components used in manufacturing process. Because of the higher thermal conductivity of metal molds, molds made of metals such as steel, aluminum, copper, or metal alloys provide excellent surface temperature uniformity, however metal molds are heavy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/02B29C45/00
CPCB29C33/02B29K2913/00B29K2995/0013B29C33/3828B29C33/3842B29K2905/00B29C33/405B29C35/02B29C2033/385B29K2101/10
Inventor D·谢L·马
Owner DOW GLOBAL TECH LLC
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