JPS61215016A - Method of polymerizing resin and its device - Google Patents

Abstract

PURPOSE:To manufacture a molded article which is superior in strength and provided with wear resistance by facilitating control of starting, suspending and reaction rate of polymerization of photopolymerizing resin, by irradiating visible rays and ultraviolet rays from the outside of a glass part of a closed vessel under a pressurised state through gas such as compressed air. CONSTITUTION:A light source 10 which is capable of irradiating visible rays and ultraviolet rays (wave length 400mmu-760mmu) toward the inside 9 is arranged on the upper part or side of a glass lid 6 of a closed glass vessel A whose inside is see-through from the outside. As for the light source of the visible rays and ultraviolet rays, a halogen lamp or incandescent lamp or flourescent lamp generating the visible rays and ultraviolet rays secondarily or natrium lamp is used. Then inorganic gas such as compressed air or nitrogen gas is supplied within the closed glass vessel A at pressure of, for example, about an extent of 2kg/cm<2>-5kg/cm<2>. A gas supply device consists of a gas source 11, filter 12, reducing valve 13, valve 14 is provided so as to enable to discharge from that place. A polymerized molded article is manufactured through a photopolymerizing method by making use of photopolymerizing resin based on constitution like this.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a resin polymerization method and an apparatus therefor, and more particularly to a resin curing method for photopolymerizing in the presence of visible light or ultraviolet rays and an improvement in the apparatus.

Conventionally, techniques for photopolymerizing resin are well known.

That is, this refers to photopolymerizable resins such as monomers such as styrene, methyl methacrylate, methyl acrylate, vinyl chloride, vinyl acetate, acrylonitrile, and methyl vinyl ketone, as well as peroxides, organic carbonyl compounds, etc. in the polymerization system. A sensitized photopolymerizable resin containing a sensitizer such as an organic sulfur compound is polymerized in the presence of ultraviolet or visible light, and compared to thermal polymerization, it is easier to control the start, stop, and reaction rate of the polymerization reaction. This has the advantage that various resin molded products can be manufactured more easily.

Therefore, it has been conventionally applied to printing plate materials, printed wiring, IC and electronic device parts, etc.

However, in the conventional photopolymerization technology, photopolymerizable resins are only exposed to light at atmospheric pressure when photopolymerizing them. It was found that the strength was insufficient compared to the conventional one, and it was easy to wear and crack. In particular, when used for printing plate materials, F1, Regis I, etc., as well as components of various types of equipment, a certain degree of strength is required, and conventional methods have been insufficient.

Although there are several possible causes for this, one is thought to be a lack of intermolecular bonding force for bonding monomers together to bond large molecules. But more importantly, after being preformed into the desired shape or membrane under atmospheric pressure,
Since the resin is only exposed to light under atmospheric pressure, it is thought that each part of the resin is not of uniform quality, and as a result, the cured product is thought to have insufficient strength in some parts. Furthermore, by photopolymerizing the bubbles in the resin as they are before molding, it is assumed that the bubbles partially become insufficient in strength.

The present invention has been made in view of the points mentioned in -1- above, and its gist is that light can pass through the resin polymerization horn, which is cured by irradiating light onto the photopolymerizable resin. The above-mentioned photopolymerizable resin molded into the shape to be molded is set on a table in a closed container in which the glass portion is placed, and then a gas such as compressed air is supplied into the closed container. It is a resin polymerization method characterized by curing and molding a photopolymerizable resin by irradiating visible light and ultraviolet rays from the outside of the glass part of a closed container under the pressure of an equal gas. It is easy to
To provide a resin polymerization method using a photopolymerization method that takes advantage of the advantages of the photopolymerization method in that it can easily produce resin molded products, and has superior strength because the photopolymerization is performed under gas pressure. Thereby, it is an object of the present invention to provide a method for producing a photopolymerizable resin molded product having a strength that can be used as a component of various types of equipment, building materials, ornaments, and the like.

Next, an embodiment of the tree 1111 will be described with reference to the accompanying drawings.

1 indicates the base of the device with one side open; a turntable 2 is disposed at the bottom of the base 1, and a motor 3
etc., so that it rotates at a slow speed. and,
A threaded portion 5 is carved in the upper part of the peripheral wall 4 of this base 1. The other 6 indicates a glass lid with a shape of 1 in the lower part, and a threaded part 8 is carved in the lower part of this peripheral wall 7 to be screwed into the threaded part 5 shown in - in an airtight manner.

Therefore, by screwing the glass lid 6 and the base 1 together using the threaded parts 5 and 8, a sealed glass container A is constructed in which the interior 9 can be seen from the outside. In order to ensure this hermeticity, a sealing member is optionally applied to the threaded portion 5 using a conventionally known method.

Visible light is provided on the lx direction or side of this glass lid 6.

Ultraviolet rays (wavelength 400 mk ~ 7 [iom p-) are internally 9
A light source 10 is provided that can emit light toward. This visible light.

As the ultraviolet light source, halogen lamps, incandescent lamps, fluorescent lamps that secondarily produce 0.0 cm visual rays, ultraviolet rays, sodium chloride lamps, etc. are considered.

Next, a gas source 11, a filter 12, A gas supply device consisting of a pressure reducing valve 13, a valve 14, etc. is attached.

Based on this structure, to explain the method of manufacturing polymerized molded products by photopolymerization method using photopolymerizable resin, first, we will start with glue-like photopolymerizable resin (direct polymerization product in which monomers directly absorb light and undergo a polymerization reaction). Molding a photopolymerizable resin (or a sensitizer photopolymerizable resin in which the sensitizer in the polymerization system absorbs light outside the absorption wavelength range of the monomer and generates radicals to initiate polymerization). Shape it into the desired shape. There are several methods for this preliminary shaping. For example, as shown in FIG. 2, a method of forming a desired shape using preliminary molds 15 and 16 for shaping the shape. In this case, as shown in FIG. 3, the shape can be formed by simply filling the preliminary mold 17 for shape forming.

In addition, a glue-like photopolymerizable resin may be applied to a plate (not shown).

In short, depending on the shape of the final molded product to be polymerized,
All you have to do is choose the most suitable method, and here you just need to adjust the shape. The finished product T that has been subjected to the preliminary forming is then held on the turntable 21- using an arbitrary means. In this case, the preliminary mold 15 used in the previous preliminary forming is It may be used as a container as is.Next, screw the crow drawer 6 onto the base l using the threaded parts 5 and 8 to keep the interior 9 airtight.Then, attach the valve 14 that constitutes the gas supply device. Operate to supply pressurized gas to the interior 9 of the closed glass container A.The pressure of the gas itself can be used within a certain range as long as it does not become excessive, for example, 2 kg/cm' to 5 kg/cm. m' or the like is considered.

When gas is supplied in this way, the internal pressure in the interior 9 increases, and the finished product T is pressurized by this pressure, so the pressure acts uniformly from the outer surface to the inside of each part, and - the finished product T is uniform. is pressurized. As a result, each part has a uniform quality, which prevents the compaction state from becoming partially uneven. In addition, air bubbles that are mixed in when the photopolymerizable resin product T is pre-shaped are removed by compaction.In particular, the product T that has been processed into a desired shape is compacted with gas while maintaining its desired shape. .

Now, while the product T is being compressed by gas in this manner, the light source 10 is turned on to irradiate the product T with visible light and ultraviolet rays for a predetermined period of time. In this case, since the sealed container is configured as a glass sealed container A, the visible light and ultraviolet rays can reach the finished product T without impairing the transmittance of the visible light and ultraviolet rays. Exposure is performed by an amount of light determined by the product of exposure times t. At this time, the product T is slowly rotated by the turntable 2 so that each part of the product T is uniformly irradiated.

The photopolymerization is started by this exposure and stopped by the end of the exposure time, thereby curing the product T, which is cured under gas pressure conditions.
It is possible to increase the strength by increasing the intermolecular bonding force during polymerization.

Since each part is uniformly pressurized like a double series, it does not harden unevenly and the strength between each part is obtained, and since the polymerization is performed in a degassed state, each part is polymerized densely. This increases the strength.

Thereafter, the pressure in the interior 9 is reduced by operating the valve 14, the glass lid 6 is removed from the base 1, and the cured final product is taken out.

Although this example shows the case where one single product T is set in the interior 9, a plurality of products may be photopolymerized at the same time.

Further, in Example -1-, an example using visible light was shown, but ultraviolet light may also be used. In this case, quartz glass is used. ■I showed an example where the entire lid of the container was made of glass.
It may also be a partial glass window that allows light to shine inside.

As described in detail below, this invention uses a resin polymerization method in which a photopolymerizable resin is irradiated with light to cure it, in which a shape to be molded is formed on a table inside a closed container having a glass portion. 2. Set the photopolymerizable resin, then supply a gas into the sealed container, and 2. Under pressure from this gas, visible light and ultraviolet rays are irradiated from the outside of the closed container to make the photopolymerizable resin. Since it is cured and molded, it has the advantages of the photopolymerization method, such as the ease of controlling the start, stop, and reaction rate of polymerization, and the elimination of the need for a ml=female mold, while at the same time improving strength. We can provide a resin polymerization method and equipment that can produce resin molded products with excellent wear resistance and superior wear resistance. , it is possible to provide a method and apparatus that can be freely molded into any desired shape.

[Brief explanation of the drawing]

The accompanying drawings show embodiments of the present invention, with FIG. 1 being a sectional view, and FIGS. 2 and 3 each showing an example of preliminary forming for shape processing. A91 in the figure. Airtight glass container, ■61. Base, 20
1. Turntable, 600. Glass lid, 919.
Inside, 10. , visible light, ultraviolet light source, T91. Primary molded product of photopolymerizable resin.

Claims (2)

[Claims] (1) In the resin polymerization method in which the photopolymerizable resin is cured by irradiating it with light, the photopolymerizable resin is formed into the shape to be molded on a table inside a closed container that has a glass part that allows light to pass through. The photopolymerizable resin is then cured and molded by supplying gas into the sealed container and irradiating visible light and ultraviolet rays from the outside of the glass part of the sealed container under pressure from the gas. This resin polymerization method is characterized by: (2) A table for setting the photopolymerizable resin that has been formed into the shape to be molded; an airtight container that can surround the photopolymerizable resin set on the table and block it from outside air; and has a glass portion; A resin consisting of a gas supply device for supplying and discharging gas into and out of a sealed container, and a light source located outside the glass part of the sealed container to irradiate visible light and ultraviolet rays to the photopolymerizable resin inside the sealed container. Polymerization equipment.