摘要:
Provided is a method for producing a good epoxy resin composition for obtaining fiber-reinforced plastics. A production method for obtaining a fiber-reinforced composite material by impregnating a fiber assembly with an epoxy resin composition and then curing the epoxy resin composition, wherein the epoxy resin composition contains a component [A], a component [B] and a component [C] respectively satisfying the conditions described below. When the blending amount of the component [B] is set to b parts by mass and the blending amount of the component [C] is set to c parts by mass relative to 100 parts by mass of the component [A] contained in the epoxy resin composition, formula (2) is satisfied within the range of formula (1), formula (4) is satisfied within the range of formula (3), and formula (6) is satisfied within the range of formula (5).
摘要:
Provided is a method for producing a good epoxy resin composition for obtaining fiber-reinforced plastics. A production method for obtaining a fiber-reinforced composite material by impregnating a fiber assembly with an epoxy resin composition and then curing the epoxy resin composition, wherein the epoxy resin composition contains a component [A], a component [B] and a component [C] respectively satisfying the conditions described below. When the blending amount of the component [B] is set to b parts by mass and the blending amount of the component [C] is set to c parts by mass relative to 100 parts by mass of the component [A] contained in the epoxy resin composition, formula (2) is satisfied within the range of formula (1), formula (4) is satisfied within the range of formula (3), and formula (6) is satisfied within the range of formula (5).
摘要:
Layers are thermally bonded with each other while retaining a conformation of fibers of nonwoven fabrics made of synthetic resin, by heating at a heatproof temperature or higher, using a vapor of water or a nonaqueous solvent in a high-pressure steam sterilizer or a high-pressure steam pot. Then, three nonwoven fabrics made of synthetic resin which consist of different materials are superposed to form three layers, and can be thermally bonded together by heating at the heatproof temperature or higher, using the high-pressure steam sterilizer. A laminated body has layers thermally bonded together while retaining a conformation of fibers of each of a nonwoven fabric A made of synthetic resin, a nonwoven fabric B made of synthetic resin and a nonwoven fabric C made of synthetic resin.
摘要:
A prepreg is provided capable of being a composite material having suitable high heat resistance, impact resistance, and mechanical properties under high temperature and high humidity conditions. As the matrix resin, a composition including a specific epoxy resin component (A), a specific bifunctional epoxy resin (B), a specific tetrafunctional epoxy resin (C), and a specific aromatic amine compound (D) at specific proportions are used. Particularly, as the epoxy resin component (A), one obtained by mixing and heating a bifunctional epoxy resin (a1), a trifunctional epoxy resin (a2), a phenol compound (a3), and a specific polyamide resin (a4) is used so as to be able to solve the above-described problems.
摘要:
In a process control data base, intermediate characteristics, processing condition for controlling a characteristic and a final characteristic in a process of manufacturing products are stored as a set of data for each product lot. In Process 1, a set of data for each product lot are prepared. Next, in Process 2, cluster processing is conducted on each set of data obtained in Process 1. In Process 3, using the set of data obtained in Process 2, the intermediate characteristics and the processing condition for controlling a characteristic are inputted and the final characteristic is outputted, and a causal relation between the input and output is quantified by a neural network so as to make a learning model. In a model applying stage, the most appropriate processing condition for controlling a characteristic is retrieved by using the learning model and the intermediate characteristics in the previous steps.
摘要:
Attention has been focused on combining two types of dental impression materials of different qualities which has not been considered in conventional combined impression, and a dental impression film and a method of manufacturing the dental impression film are provided for making the two parts joinable. The dental impression film is formed of a polyethylene film and polyethylene/polyester films. The polyethylene film has, laminated by thermal adhesion on opposite surfaces thereof, respectively, the polyethylene/polyester films having bonding capability between a silicone impression material and an alginate impression material. The dental impression film having bonding capability is interposed between the silicone impression material and alginate impression material. This enables joining of the silicone impression material and alginate impression material, no longer requires the timing of hardening of the impression materials to be matched, and allows a precise impression at low cost using a small amount of silicone impression material.
摘要:
A prepreg is provided capable of being a composite material having suitable high heat resistance, impact resistance, and mechanical properties under high temperature and high humidity conditions. As the matrix resin, a composition including a specific epoxy resin component (A), a specific bifunctional epoxy resin (B), a specific tetrafunctional epoxy resin (C), and a specific aromatic amine compound (D) at specific proportions are used. Particularly, as the epoxy resin component (A), one obtained by mixing and heating a bifunctional epoxy resin (a1), a trifunctional epoxy resin (a2), a phenol compound (a3), and a specific polyamide resin (a4) is used so as to be able to solve the above-described problems.