JPH0528039Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] The present invention relates to a flocked body with excellent heat resistance, and more specifically, it is a heat-resistant flocked body consisting of a heat-resistant base material, a heat-resistant adhesive, and heat-resistant short fibers. [Prior art and its problems] Conventionally, the base material of a flocked body has been made of materials with poor heat resistance, such as cloth, paper, and synthetic resin film. In addition, two types of adhesives are used to bond the base material and short fibers: emulsion type and solvent type, but the solvent type has improved workability during flocking process.
The emulsion type is mainly used because it has properties that are less favorable for work than the emulsion type, such as danger and toxicity. Short fibers for flocking include short fibers such as acetate, viscose rayon, polyamide, polyacrylonitrile, polyester, and cotton. Among these, short fibers of viscose rayon and polyamide are used as processed and processed products. It is widely used because it is excellent in subsequent processing. The flocked body is manufactured using an electrostatic processing method in which short fibers are planted on the surface of a base material coated with an adhesive using electrostatic phenomena, and then heat treated to make the adhesive stick. Heat treatment is required to bond the base material and short fibers, and the heat treatment is generally performed at 130℃ for 7
However, there is a problem that temperature variations occur at the start of the process and during processing, resulting in insufficient heat treatment and the flocked short fibers falling out. In order to stabilize the bond between the base material and the short fibers, the heat treatment temperature is increased and the time is increased, which increases the adhesive strength between the base material and the short fibers, but
When base materials such as paper and synthetic resin films are subjected to high-temperature heat treatment (150°C or higher), they suffer from shrinkage, expansion, discoloration, fading, and a decrease in strength, resulting in quality problems. In addition, processed flocked bodies are recently used as industrial parts with functional purposes in areas exposed to high temperatures, and such areas require disaster prevention, heat resistance, and dimensional stability. The conventional base materials mentioned above were not satisfactory. [Purpose of the invention] The present invention was developed in view of these problems, and it makes it possible to increase the heat treatment temperature and lengthen the time during the flocking process, thereby increasing the adhesive strength between the base material and short fibers. The present invention provides a flocked body that is strong and can be used in high-temperature locations as industrial parts. [Means for solving the problem] In order to achieve the above object, the flocked body of the present invention with excellent heat resistance has a base material 1 made of ceramic paper with an inorganic content of 80% or more and an aluminum hydroxide component.
Synthetic fibers or inorganic short fibers 3 having a softening point of 200° C. or more are flocked onto the surface of the fiberglass material via a heat-resistant adhesive 2. [Function] The base material 1 is ceramic paper made of 80% or more inorganic material containing heat-resistant aluminum hydroxide, and the adhesive 2 is a heat-resistant condensation resin and a reactive, self-crosslinking acrylic ester. Using a heat-resistant softening point of 200 even for short fibers
By using synthetic fibers and inorganic fibers having a temperature of .degree. [Example] Below, drawings showing examples of the present invention will be described. 1 is a base material made of ceramic paper with an inorganic content of 80% or more and whose component is heat-resistant aluminum hydroxide, and 2 is the base material. The adhesive is a heat-resistant condensation resin and a reactive, self-crosslinking acrylic ester resin adhesive that is applied to the surface of 1. 3
is a short fiber obtained by cutting synthetic fibers with a softening point of 200° C. or higher, such as acetate, viscose rayon, polyamide, polyacrylonitrile, and polyester, or inorganic fibers, such as glass fibers, into a predetermined length. The flocked body is manufactured by continuous flocking of the entire surface using a known electrostatic processing method. Next, we will show the results of a heat resistance test on the product of the present invention and the conventional product. The test conditions are that the sample size is 200 mm vertically.
mm, width 150mm using a hot air dryer, 180℃±1
It was dried at ℃ for 3 hours.

【table】

[Effect of idea]

In the present invention, short fibers 3 made of synthetic fibers or inorganic fibers with a softening point of 200°C or more are attached to the surface of a base material 1 made of ceramic paper containing 80% or more inorganic material containing aluminum hydroxide as a component, via a heat-resistant adhesive 2. Since the fibers are flocked, it is possible to heat the fibers at a high temperature and for a sufficient amount of time during the flocking process, which improves the adhesive strength between the base material 1 and the short fibers 3.
Since the flocked body is highly heat resistant, it can be used as industrial parts that are exposed to high temperatures.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view showing an embodiment of the present invention. 1... Base material, 2... Adhesive, 3... Short fiber.

Claims (1)

[Scope of utility model registration request] Inorganic material containing aluminum hydroxide as a component 80
% or more of the base material 1 made of ceramic paper,
This flocked body has excellent heat resistance and is made by flocking short fibers 3 of synthetic fibers or inorganic fibers with a softening point of 200° C. or more via a heat-resistant adhesive 2.