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Preparation method of unsaturated polyester resin buttons

A polyester resin, unsaturated technology, applied in the field of buttons, can solve the problems of fragility and low pass rate

Active Publication Date: 2014-09-10
ZHEJIANG WEIXING IND DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also the following problems in the molding process: 1. Unsaturated polyester resin button blanks are easily broken under the action of external force; 2. In the continuous molding process, with the change of molding process time, the pass rate is low

Method used

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  • Preparation method of unsaturated polyester resin buttons
  • Preparation method of unsaturated polyester resin buttons
  • Preparation method of unsaturated polyester resin buttons

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preparation example Construction

[0026] The invention provides a method for preparing an unsaturated polyester resin button, comprising: A) 100 parts by weight of unsaturated polyester resin, 0.4 to 2 parts by weight of accelerator, 0.1 to 2 parts by weight of pearlescent pigment, After mixing 1-10 parts by weight of plasticizer, 0.1-5 parts by weight of toughening agent and 0.1-5 parts by weight of retarder, adjust the viscosity, then add 0.4-2 parts by weight of curing agent, centrifuge, and After the gelling treatment, the blank is punched to obtain a button blank;

[0027] B) The button blank is subjected to low temperature treatment, and then molded with a mold to obtain an unsaturated polyester resin button.

[0028] Among them, the present invention has no special limitation on the sources of all raw materials, which can be commercially available.

[0029] The unsaturated polyester resin is an unsaturated polyester resin well-known to those skilled in the art, and there is no special limitation. In th...

Embodiment 1

[0048] 1.1 Add 0.6 parts by weight of cobalt water, 0.3 parts by weight of pearl powder, 6 parts by weight of ATBC, 3 parts by weight of 608 toughening agent and 2 parts by weight of α - Methyl styrene, stirred with a three-blade stirrer for 10 min, and then adjusted the viscosity with styrene to adjust the viscosity to 200Pa·s, then added 1.2 parts by weight of methyl ethyl ketone peroxide, and stirred again until uniform, and prepared The good unsaturated polyester resin pearlescent material is poured into the centrifuge bucket, and under the action of centrifugal force, it is flatly spread on the inner wall of the centrifuge to form a sheet. After gelation treatment for 5 minutes, it is removed from the centrifuge when the hardness reaches A25-30. Take out the sheet, and then use the punching machine to blank it into a button blank.

[0049] 1.2 Put the button blank obtained in 1.1 in a constant temperature box at 0°C to 10°C to slow down and then solidify. When the hardnes...

Embodiment 2

[0053] 2.1 Add 0.4 parts by weight of cobalt water, 1 part by weight of pearl paste, 6 parts by weight of dibutyl ester, 3 parts by weight of 608 toughening agent and 2 parts by weight of 100 parts by weight of m-benzene type unsaturated polyester resin α-methylstyrene, stirred with a three-blade stirrer for 10 minutes, and then adjusted the viscosity with styrene to adjust the viscosity to 200Pa·s, then added 1.5 parts by weight of methyl ethyl ketone peroxide, and stirred again until uniform, Pour the prepared unsaturated polyester resin pearlescent material into the centrifuge bucket, and under the action of centrifugal force, spread it on the inner wall of the centrifuge to form a sheet. After gelation treatment for 4 minutes, wait until the hardness reaches A25-30 from The sheet is taken out from the centrifuge, and then blanked into a button blank by a punching machine.

[0054] 2.2 Put the button blank obtained in 2.1 in a constant temperature box at 0°C to 10°C to slow...

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Abstract

The invention provides a preparation method of unsaturated polyester resin buttons. The method includes A, mixing unsaturated polyester resin, accelerant, pearlescent pigment, plasticizer, toughening agent and retarder, adjusting the viscosity, adding curing agent, centrifuging, and obtaining button blanks by blanking after gelation treatment; B, performing low-temperature process to the button blanks, molding through a mold with the preset mold, and obtaining the unsaturated polyester resin buttons. Compared with the prior art, the plasticizer and the toughening agent are added into the unsaturated polyester resin, the toughness of the resin can be improved, the break elongating rate of the resin can be increased, and the impact resistance of the resin can be improved; in addition, the retarder is added into the unsaturated polyester resin, the exothermic peak in the post curing process can be adjusted, heat releasing is reduced, post curing effect is slowed, the low-temperature process is performed to the button blanks, the post curing reaction of the button blanks during molding can be slowed, and the button blanks are not prone to smashing during molding.

Description

technical field [0001] The invention belongs to the technical field of buttons, in particular to a preparation method of unsaturated polyester resin buttons. Background technique [0002] Unsaturated polyester resin buttons are made of unsaturated polyester resin as the main raw material, adding appropriate amount of additives, gelling and curing into pearlescent or non-pearlescent plates and rods in specific equipment and molds, and then mechanically processed. [0003] Unsaturated polyester buttons are referred to as resin buttons for short, and their main features are: (1) Good wear resistance; unsaturated resin is a thermosetting resin, the material has high strength, and it is much stronger than the surface scratch resistance of thermoplastic plexiglass buttons. Therefore, it can generally withstand the continuous friction of the washing machine without breaking, even if resin buttons are used on sand-washed clothing, it can also withstand the test of sand washing; (2) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A44B1/02C08L67/06C08K13/02C08K5/098C08K5/11C08K5/14
Inventor 吴慧群单仁军
Owner ZHEJIANG WEIXING IND DEV