阅读说明：本技术 一种用于食品饭盒安全性高的黑色色母的制备 (Preparation of black color master batch with high safety for food lunch box ) 是由 徐锦善 于 2018-07-11 设计创作，主要内容包括：本发明公开了一种用于食品饭盒安全性高的黑色色母的制备,包括以下步骤：准备载体树脂、A类黄颜料、B类黄颜料、C类红颜料、D类蓝色颜料以及塑料助剂；将载体树脂加入到原料搅拌罐中进行搅拌混合,载体树脂的含量为60-70%。本发明通过将三种颜色的有机和无机颜料进行搭配,并添加质量分数为0.1%-0.5%的炭黑于基体树脂中制备出既满足产品颜色要求又在产品使用过程中不发生导电的黑色色母,该用于食品饭盒安全性高的黑色色母的制备,具备安全性高的优点,解决了现有技术下生产的黑色色母粒中大多都添加了较高比例的炭黑,炭黑的添加使得黑色PP饭盒在微波炉中进行加热时会产生电火花,具有潜在的安全威胁的问题。(The invention discloses a preparation method of a black color master batch with high safety for a food lunch box, which comprises the following steps: preparing carrier resin, A-type yellow pigment, B-type yellow pigment, C-type red pigment, D-type blue pigment and plastic auxiliary agent; adding the carrier resin into a raw material stirring tank, stirring and mixing, wherein the content of the carrier resin is 60-70%. According to the invention, the black color master batch which meets the product color requirement and does not generate electric conduction in the product use process is prepared by matching the organic pigments and the inorganic pigments with three colors and adding the carbon black with the mass fraction of 0.1-0.5% into the matrix resin, the black color master batch has the advantage of high safety when being used for preparing the black color master batch with high food lunch box safety, and the problem that the electric spark is generated when the black PP lunch box is heated in a microwave oven due to the addition of the carbon black, and the potential safety threat is caused is solved.)

1. The preparation method of the black color master batch for the food lunch box with high safety is characterized by comprising the following steps of: the method comprises the following steps:

step 1: preparing carrier resin, A-type yellow pigment, B-type yellow pigment, C-type red pigment, D-type blue pigment and plastic auxiliary agent;

step 2: adding carrier resin into a raw material stirring tank, stirring and mixing, wherein the content of the carrier resin is 60-70%, and then sequentially adding A type yellow pigment, B type yellow pigment, C type red pigment and D type blue pigment, mixing and stirring;

and step 3: adding carbon black with the mass fraction of 0.1-0.5% into a raw material stirring tank;

and 4, step 4: after carbon black is completely mixed with carrier resin, A-type yellow pigment, B-type yellow pigment, C-type red pigment and D-type blue pigment, adding a plastic auxiliary agent into a raw material stirring tank, wherein the content of the plastic auxiliary agent is 1-10%;

and 5: after the plastic additives are completely mixed in the raw material stirring tank, the extrusion diameter is cut and cooled circularly under water, and black color master batch which can meet the color requirement of the product and does not generate electric conduction in the using process of the product can be prepared.

2. The preparation method of the black masterbatch with high safety for the food lunch box according to claim 1, wherein the black masterbatch comprises the following components: the carrier resin adopted in the step 1 is low-density polyethylene resin or linear low-density polyethylene or high-density polyethylene resin, and the melt index of the carrier resin is 2-10 g/min.

3. The preparation method of the black masterbatch with high safety for the food lunch box according to claim 1, wherein the black masterbatch comprises the following components: the A-class yellow pigment adopted in the step 1 is diphenyl sulfonamide, permanent yellow and fast yellow, the B-class yellow pigment is permanent orange, orange chrome yellow and other chrome yellow, the C-class red pigment is fast scarlet, golden bright red, scarlet powder and iron red, and the D-class blue pigment is phthalocyanine blue.

4. The preparation method of the black masterbatch with high safety for the food lunch box according to claim 1, wherein the black masterbatch comprises the following components: the plastic additives adopted in the step 1 are stearate additives, polyethylene wax and subunit bis-stearamide, and the stearate additives are zinc stearate, calcium stearate or magnesium stearate.

5. The preparation method of the black masterbatch with high safety for the food lunch box according to claim 1, wherein the black masterbatch comprises the following components: and (3) stirring and blending the raw materials in the steps 2 to 4 by using a double-screw high-shear process.

6. The preparation method of the black masterbatch with high safety for the food lunch box according to claim 1, wherein the black masterbatch comprises the following components: the organic yellow pigment such as permanent yellow or sun-proof yellow and the like, the titanium yellow 5-8%, the sun-proof scarlet, the aurora red, the scarlet powder, the iron red 5-8%, the phthalocyanine blue and the ultramarine 5-8% are added in the step 4.

Technical Field

The invention relates to the technical field of high polymer materials, in particular to a preparation method of a black color master batch with high safety for a food lunch box.

Background

Polypropylene PP, usually a translucent colorless solid, is odorless and non-toxic. The melting point can be up to 167 ℃ due to regular structure and high crystallization. The product is heat-resistant and corrosion-resistant, and the steam sterilization of the product is a remarkable advantage. The density is low, and the plastic is the lightest general plastic. The PP material is widely applied to production of disposable lunch boxes due to high melting point and easiness in processing and forming, is the only plastic which can be heated in a microwave oven and cannot generate harmful substances, black color master batches need to be added into the PP material in order to obtain black PP lunch boxes with better appearance effects, however, most of the black color master batches produced in the prior art are added with carbon black with high proportion, the black PP lunch boxes can generate electric sparks when being heated in the microwave oven due to the addition of the carbon black, and potential safety threats exist.

Disclosure of Invention

The invention aims to provide the preparation of the high-safety black master batch for the food lunch box, has the advantage of high safety, and solves the problem that the black master batch produced in the prior art is mostly added with carbon black with a high proportion, so that the black PP lunch box generates electric sparks when being heated in a microwave oven due to the addition of the carbon black, and has potential safety threats.

In order to achieve the purpose, the invention provides the following technical scheme: the preparation method of the black color master batch with high safety for the food lunch box comprises the following steps:

step 1: preparing carrier resin, A-type yellow pigment, B-type yellow pigment, C-type red pigment, D-type blue pigment and plastic auxiliary agent;

step 2: adding carrier resin into a raw material stirring tank, stirring and mixing, wherein the content of the carrier resin is 60-70%, and then sequentially adding A type yellow pigment, B type yellow pigment, C type red pigment and D type blue pigment, mixing and stirring;

and step 3: adding carbon black with the mass fraction of 0.1-0.5% into a raw material stirring tank;

and 4, step 4: after carbon black is completely mixed with carrier resin, A-type yellow pigment, B-type yellow pigment, C-type red pigment and D-type blue pigment, adding a plastic auxiliary agent into a raw material stirring tank, wherein the content of the plastic auxiliary agent is 1-10%;

and 5: after the plastic additives are completely mixed in the raw material stirring tank, the extrusion diameter is cut and cooled circularly under water, and black color master batch which can meet the color requirement of the product and does not generate electric conduction in the using process of the product can be prepared.

Preferably, the carrier resin used in step 1 is a low density polyethylene resin or a linear low density polyethylene or a high density polyethylene resin, and the melt index of the carrier resin is 2-10 g/min.

Preferably, the yellow pigment A used in the step 1 is diphenyl sulfonamide, permanent yellow and fast yellow, the yellow pigment B is permanent orange, orange chrome yellow and other chrome yellow, the red pigment C is fast scarlet, golden bright red, scarlet powder and iron red, and the blue pigment D is phthalocyanine blue.

Preferably, the plastic additive used in step 1 is stearate additive, polyethylene wax, subunit bis stearamide, and the stearate additive is zinc stearate, calcium stearate or magnesium stearate.

Preferably, the raw material stirring tank in the steps 2 to 4 is stirred and blended by using a twin-screw high-shear process.

Preferably, the content of the organic yellow pigment such as permanent yellow or sun-proof yellow added in the step 4 is 5-8% of titanium yellow, 5-8% of sun-proof scarlet, aurora red, scarlet powder, iron red, 5-8% of phthalocyanine blue and ultramarine blue.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the black color master batch which meets the product color requirement and does not generate electric conduction in the product use process is prepared by matching the organic pigments and the inorganic pigments with three colors and adding the carbon black with the mass fraction of 0.1-0.5% into the matrix resin, the black color master batch has the advantage of high safety when being used for preparing the black color master batch with high food lunch box safety, and the problem that the electric spark is generated when the black PP lunch box is heated in a microwave oven due to the addition of the carbon black, and the potential safety threat is caused is solved.

Detailed Description

The present invention will now be described in more detail by way of examples, which are given by way of illustration only and are not intended to limit the scope of the present invention in any way.

The invention provides a technical scheme that: the preparation method of the black color master batch with high safety for the food lunch box comprises the following steps:

step 1: preparing carrier resin, A-type yellow pigment, B-type yellow pigment, C-type red pigment, D-type blue pigment and plastic auxiliary agent;

step 2: adding carrier resin into a raw material stirring tank, stirring and mixing, wherein the content of the carrier resin is 60-70%, and then sequentially adding A type yellow pigment, B type yellow pigment, C type red pigment and D type blue pigment, mixing and stirring;

and step 3: adding carbon black with the mass fraction of 0.1-0.5% into a raw material stirring tank;

and 4, step 4: after carbon black is completely mixed with carrier resin, A-type yellow pigment, B-type yellow pigment, C-type red pigment and D-type blue pigment, adding a plastic auxiliary agent into a raw material stirring tank, wherein the content of the plastic auxiliary agent is 1-10%;

and 5: after the plastic additives are completely mixed in the raw material stirring tank, the extrusion diameter is cut and cooled circularly under water, and black color master batch which can meet the color requirement of the product and does not generate electric conduction in the using process of the product can be prepared.