Summary of the invention
The objective of the invention is to overcome the deficiency that existing plastic button exists, provide a kind of cheap, convenient for production, can produce in enormous quantities, plastic button and manufacture method thereof that at a certain temperature can variable color.
In order to reach above-mentioned requirements, heat discoloration plastic button of the present invention is characterized in that containing the heat discoloration powder in the raw material of making plastic button.
The raw materials by weight of described heat discoloration plastic button includes: heat discoloration powder 0.1-10%, and the pigment 0-1.5% of light color, all the other are plastics.
Described plastics are any in PE, PP, ABS, PS, PVC, PU, TPU, TPR, EVA PE, PP, PMMA, AC, PU, TPU, TPR, PS, MS, the K glue.
The heat discoloration cardinal temperature of described heat discoloration powder is a kind of in-5 ℃, 0 ℃, 5 ℃, 10 ℃, 16 ℃, 21 ℃, 31 ℃, 33 ℃, 38 ℃, 43 ℃, 45 ℃, 50 ℃.
Described heat discoloration powder has a kind of in rhodo, bright red, golden red, black, grass green, blackish green, peacock green, sapphire blue, yellow, red, rose-red, pink, vermilion, orange, yellow, yellow green, grass green, green, skyblue, Turkey's indigo plant, blueness, navy blue, the violet or any several mixing in them in the color of color status.
In the raw material of above-mentioned heat discoloration plastic button, add, press the antioxidant of heat discoloration powder gross weight 15-25%, the thermal stabilizer of 15-25%.
Yet can in the raw material of above-mentioned heat discoloration plastic button, add, press the UV absorbent of heat discoloration powder gross weight 15-25%.
The production technology of above-mentioned heat discoloration plastic button is characterized in that including successively the following step:
A batching: put together by the raw material of above-mentioned manufacturing heat discoloration plastic button and weight ratio and to stir, become compound;
B is shaped: the button injection mold is installed on the injection machine, compound is added injection machine, carry out injection moulding by corresponding plastics variety with conventional injection moulding process and injection parameters, make the finished product of sensitization discoloration plastic button after the depanning deburring.
The heat discoloration principle of this heat discoloration plastic button: heat discoloration pigment is prepared by electron transfer type organic compound objects system.The electron transfer type organic compound is organic color development system that a class has special chemical structure.Under specified temp, this organic molecular structure is changed, thereby realize color transition because of electronics shifts.This electrochromic substance is not only bright-colored, and can realize from the change color of " coloured → colourless, colourless → coloured " state under different temperature.When the pigment that adds light color in raw material, when made implements temperature was higher than the heat discoloration cardinal temperature, the heat discoloration powder showed colourless, and the color of pigment then begins to show, can inform clearly that the temperature of these implements has surpassed the heat discoloration cardinal temperature.
Described heat discoloration cardinal temperature is that heat discoloration can be with the rising of temperature, decline and change color repeatedly.As being example with 31 ℃ of redness of heat discoloration cardinal temperature, the variable color form be present more than 31 ℃ colourless, present redness below 31 ℃, if the heat discoloration plastic button of making thus also adds lurid dyestuff therein, be lurid background color in time more than 31 ℃, when the temperature of heat discoloration plastic button then presents redness during less than 31 ℃ again.
The selection of heat discoloration plastic button background color can not be too dark, generally selects transparent or light optimum, in order to avoid hide the color after the variable color.Therefore the dyestuff of described light color be relative variable color powder when color status, the color of dyestuff does not hide the color of variable color powder when coloured.
According to the heat discoloration plastic button of above-mentioned prescription and explained hereafter, owing to contain the heat discoloration powder in the heat discoloration plastic button, can variable color under different temperature, as temperature difference throughout the year, the heat discoloration plastic button is variable to go out different colors.Can be widely used on the various dress ornaments such as garment for children, job that requires special skills, be fit to the needs of different purposes, have vast market and development prospect.
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Heat discoloration plastic button of the present invention is characterized in that containing the heat discoloration powder in the raw material of making plastic button.
The raw materials by weight of described heat discoloration plastic button includes: heat discoloration powder 0.1-10%, and the pigment 0-1.5% of light color, all the other are plastics.
Described plastics are any in PE, PP, ABS, PS, PVC, PU, TPU, TPR, EVA PE, PP, PMMA, AC, PU, TPU, TPR, PS, MS, the K glue.
The heat discoloration cardinal temperature of described heat discoloration powder is a kind of in-5 ℃, 0 ℃, 5 ℃, 10 ℃, 16 ℃, 21 ℃, 31 ℃, 33 ℃, 38 ℃, 43 ℃, 45 ℃, 50 ℃.
Described heat discoloration powder has a kind of in rhodo, bright red, golden red, black, grass green, blackish green, peacock green, sapphire blue, yellow, red, rose-red, pink, vermilion, orange, yellow, yellow green, grass green, green, skyblue, Turkey's indigo plant, blueness, navy blue, the violet or any several mixing in them in the color of color status.
In the raw material of above-mentioned heat discoloration plastic button, add, press the antioxidant of heat discoloration powder gross weight 15-25%, the thermal stabilizer of 15-25%, yet can in the raw material of above-mentioned heat discoloration plastic button, add, press the UV absorbent of heat discoloration powder gross weight 15-25%, to promote stability, improve anti-light fatigue.
The production technology of above-mentioned heat discoloration plastic button is characterized in that including successively the following step:
The A batching: the raw material of according to the form below manufacturing heat discoloration plastic button and weight ratio are put together and are stirred, and become compound;
Make the heat discoloration cardinal temperature and when above be the batching of colourless heat discoloration plastic button: (unit: kilogram)
Material name |
Embodiment 1 |
Embodiment 2 |
Embodiment 3 |
Embodiment 4 |
The heat discoloration powder |
(0.1 5 ℃ of rhodos) |
10 (10 ℃ grass green) |
1 (21 ℃ of yellow) |
5 (31 ℃ of pinks) |
Antioxidant |
0.02 |
1.5 |
?0.25 |
?0 |
Thermal stabilizer |
0.02 |
2.5 |
?0.15 |
?0 |
The UV absorbent |
0 |
2 |
?0.15 |
?1.25 |
Plastic grain |
99.86 |
84 |
?98.45 |
?93.75 |
Make heat discoloration cardinal temperature batching for colored heat discoloration plastic button when above: (unit: kilogram)
Material name |
Embodiment 5 |
Embodiment 6 |
Embodiment 7 |
Embodiment 8 |
The heat discoloration powder |
(0.1 38 ℃ of yellow) |
10 (43 ℃ of greens) |
1 (45 ℃ of bluenesss) |
5 (50 ℃ sapphire blue) |
Antioxidant |
0.02 |
1.5 |
?0.25 |
?0 |
Thermal stabilizer |
0.02 |
2.5 |
?0.15 |
?0 |
The UV absorbent |
0 |
2 |
?0.15 |
?1.25 |
Pigment |
(0.5 light blue) |
(1.5 pink) |
1 (milky white) |
1 (Huang) |
Plastic grain |
99.36 |
82.5 |
?97.45 |
?92.75 |
Described plastics are any in PE, PP, ABS, PS, PVC, PU, TPU, TPR, EVA PE, PP, PMMA, AC, PU, TPU, TPR, PS, MS, the K glue.
Represented heat discoloration cardinal temperature number and the color when the heat discoloration cardinal temperature is following of being respectively in the last table heat discoloration powder bracket.
Because the difference on effect of the variable color powder variable color of selling is very big in the market, when using the consumption of variable color powder, should be according to the actual mass situation control of variable color powder.
8 embodiment of above-mentioned 1-8 are except that the batching and consumption difference of material therefor, and the subsequent production technology of heat discoloration plastic button is all identical, is successively:
B is shaped: the button injection mold is installed on the injection machine, compound is added injection machine, carry out injection moulding by corresponding plastics variety with conventional injection moulding process and injection parameters, make the finished product of sensitization discoloration plastic button after the depanning deburring.
The heat discoloration plastic button that the foregoing description 1, embodiment 2, embodiment 3, embodiment 4 are made, when they when heat discoloration cardinal temperature number is above, the heat discoloration plastic button is colourless; When heat discoloration cardinal temperature number is following, its color will be by the original colourless rhodo, grass green, yellow, pink that becomes respectively.
At the made heat discoloration plastic button of the foregoing description 5, embodiment 6, embodiment 7, embodiment 8, when they when heat discoloration cardinal temperature number is above, it is light blue, pink, milky white, yellow that the face of heat discoloration plastic button is respectively, it is the color of pigment, when when heat discoloration cardinal temperature number is following, its color will become yellow, green, blueness, sapphire blue respectively by original light blue, pink, milky white, yellow.
In actual use, can also mix and/or with the heat discoloration powder mixing of different colours with multiple color dye, produce and in same heat discoloration plastic button, have the different background color colors and the color of multiple variable color, make the heat discoloration plastic button more beautiful.