CN111635483A - POE (polyolefin elastomer) graft polymer for enhancing PP (polypropylene) printing performance and preparation process thereof - Google Patents

Abstract

A POE graft polymer for enhancing printing performance of PP, which is characterized by comprising: 8-10 parts by weight of 7-amino-3-vinyl-8-oxo-5-thia-1-azabicyclo (4,2,0) oct-2-ene-2-carboxylic acid, 0.30-0.50 part by weight of 2.5-dimethyl-2.5-di-tert-butylperoxyhexane, 0.20-0.30 part by weight of dioctyltin dilaurate, 0.20-0.25 part by weight of antioxidant 1010, 0.30-0.35 part by weight of antioxidant TP and 0.8-1.0 part by weight of humectant EBS, wherein the total weight of the mixture ratio is 100. By adopting the invention, the surface wetting tension is obviously improved, the good printing performance is shown, and in addition, the low-temperature impact strength and the antistatic performance are also greatly improved. The PP polymer has excellent printing performance and good comprehensive performance.

Description

POE (polyolefin elastomer) graft polymer for enhancing PP (polypropylene) printing performance and preparation process thereof

Technical Field

The invention relates to the technical field of polymers, in particular to a POE (polyolefin elastomer) graft polymer for enhancing PP (polypropylene) printing performance and a preparation process thereof.

Background

Polypropylene (PP) is a thermoplastic polymer. The PP material has good physical and mechanical properties, can be widely applied to daily necessities, machinery, electronic appliances, household appliances, product packaging, plates and the like, has high PP crystallinity and low surface tension, and is a high polymer material with a nonpolar molecular structure.

The PP has small critical surface tension, strong inertia, poor affinity with ink and low adhesion fastness to the ink, so the printing performance of the PP is poor. Limiting its range of application.

Disclosure of Invention

The invention provides a POE (polyolefin elastomer) graft polymer for enhancing PP (polypropylene) printing performance and a preparation process thereof, which are used for overcoming the defect of poor PP printing performance.

The technical scheme of the invention is as follows:

a POE graft polymer for enhancing printing performance of PP, which is characterized by comprising: 8-10 parts by weight of 7-amino-3-vinyl-8-oxo-5-thia-1-azabicyclo (4,2,0) oct-2-ene-2-carboxylic acid, 0.30-0.50 part by weight of 2.5-dimethyl-2.5-di-tert-butylperoxyhexane, 0.20-0.30 part by weight of dioctyltin dilaurate, 0.20-0.25 part by weight of antioxidant 1010, 0.30-0.35 part by weight of antioxidant TP and 0.8-1.0 part by weight of humectant EBS, wherein the total weight of the mixture ratio is 100.

The dioctyltin dilaurate is used as a catalyst.

The chemical name of the antioxidant 1010 is tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.

The antioxidant DLTP is dilauryl thiodipropionate, the molecular formula is C30H58O4S, and the molecular weight is 514.8441.

The wetting agent EBS is ethylene bis stearamide.

A preparation process of POE graft polymer for enhancing PP printing performance comprises the following steps:

(5) extruding on a double-screw extruder with the length-diameter ratio L/D (being 48), wherein the extruder is provided with 12 sections and 3 feed inlets, the first feed inlet is positioned at the extruder 1D, the second feed inlet is positioned at the extruder 5D, and the third feed inlet is positioned at the extruder 7D;

(6) POE was fed at a feed rate of 75kg/n to feed port 1# at the first feed port 1D of the twin-screw extruder running at 110 r/min;

(7) the monomer is mixed according to the formula proportion: after 7-amino-3-vinyl-8-oxo-5-thia-1-azabicyclo (4,2,0) oct-2-ene-2-carboxylic acid, an initiator 2.5-dimethyl-2.5-di-tert-butylperoxyhexane and a catalyst dioctyltin dilaurate are uniformly mixed, the mixture is added to a feeding port 2# of an extruder 51D at a feeding rate of 3.8kg/n under the pressure of 1.2-1.5 MPa, the reaction of a connecting plate on a POE molecular chain occurs, the extrusion temperature is gradually increased from 120-130 ℃ of a first section to 180-190 ℃ of an eighth section, and the temperature of the tail section of the extruder is gradually decreased to 120-130 ℃;

(8) after mixing the antioxidant 1010, the antioxidant DLTP, and the wetting agent EBS, the mixture was fed to a feed port 3# located at the extruder 7D at a feed rate of 0.92 kg/n.

The process temperatures in the extruder were 12 zones as shown in table 1:

TABLE 1 Process temperatures in 12 zones on the extruder

Section 1	Section 2	Section 3	Section 4
				120℃～130℃	130℃～140℃	150℃～160℃	160℃～170℃
Section 5	Section 6	Section 7	Section 8
				160℃～170℃	170℃～180℃	180℃～190℃	180℃～190℃
Section 9	Section 10	Section 11	Section 12
				150℃～160℃	140℃～150℃	130℃～140℃	120℃～110℃

The invention has the following beneficial effects:

in the POE extrusion process, under the action of an initiator 2.5-dimethyl-2.5-bis (tert-butylperoxy) hexane (DBPH) and a catalyst dioctyltin dilaurate, a functional monomer containing carboxylic acid stems and strong polarity is introduced to a POE molecular chain: 7-amino-3-vinyl-8-oxo-5-thia-1-azabicyclo (4,2,0) oct-2-ene-2-carboxylic acid. The POE after the reaction of the fishplate bar is used as a modifier to be mixed into the PP base material, and the performance test of the prepared product shows that the surface tension and the surface wetting tension of the PP are obviously improved, the good printing performance is shown, and in addition, the low-temperature impact strength and the antistatic performance are also greatly improved. The PP polymer has excellent printing performance and good comprehensive performance.

Drawings

FIG. 1 is a schematic view of the structure of a twin-screw extruder of the present invention.

FIG. 2 is a schematic view of the structure of a screw extruder according to an embodiment of the present invention.

Detailed Description

The invention will be further explained with reference to the drawings.

Such as fig. 1 and fig. 2.

The weight ratio of example 1 (POE-based plate polymer) is shown in Table 2:

TABLE 2 weight parts ratio of example 1 (POE-based plate Polymer)

PP	100
		POE bonding sheet material (New preparation)	6
Superfine talc powder (2500 meshes)	30
		Antioxidant 1010	0.20～0.25
Antioxidant DLTP	0.30～0.35
		Zinc stearate	0.40～0.60

The weight proportions of example 2 (with other modifiers) are given in table 3:

TABLE 3 proportioning of parts by weight of example 2 (with other modifiers)

Example 3, experimental formulation preparation process: the method comprises the following steps:

(1) as shown in fig. 2, extrusion was carried out on a twin screw extruder with a length to diameter ratio L/D of 48, with 12 zones, 3 feed ports, and 1 feed port located in extruder 1D;

(2) weighing the components of the test formula according to the formula proportion, putting the components into a high-speed mixer, stirring for 5-6 minutes, and discharging for later use;

(3) the mixed PP mixture was fed at a feed rate of 95kg/n into the throat of a twin-screw extruder running at 150r/min

(4) Processing temperature of each section:

section 1	Section 2	Section 3	Section 4
				130℃～140℃	180℃～190℃	190℃～200℃	200℃～210℃
Section 5	Section 6	Section 7	Section 8
				210℃～220℃	210℃～220℃	220℃～230℃	220℃～230℃
Section 9	Section 10	Section 11	Section 12
				200℃～210℃	190℃～200℃	180℃～190℃	160℃～170℃

Typical properties:

the special raw material sources are as follows:

(1) 7-amino-3-vinyl-8-oxo-5-thia-1-azabicyclo (4,2,0) oct-2-ene-2-carboxylic acid was purchased from: wuhan Peak Yaohui Chemicals, Inc.

(2)POE-g-MAH

Purchased from: nanjing plastic Tai Polymer science and technology Co.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. A POE graft polymer for enhancing printing performance of PP, which is characterized by comprising: 8-10 parts by weight of 7-amino-3-vinyl-8-oxo-5-thia-1-azabicyclo (4,2,0) oct-2-ene-2-carboxylic acid, 0.30-0.50 part by weight of 2.5-dimethyl-2.5-di-tert-butylperoxyhexane, 0.20-0.30 part by weight of dioctyltin dilaurate, 0.20-0.25 part by weight of antioxidant 1010, 0.30-0.35 part by weight of antioxidant TP and 0.8-1.0 part by weight of humectant EBS, wherein the total weight of the mixture ratio is 100.

2. The POE graft polymer for enhancing PP printing performance of claim 1 wherein said dioctyltin dilaurate is used as a catalyst.

3. The POE graft polymer for enhancing PP printing performance as claimed in claim 1, wherein the antioxidant 1010 is pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] chemically.

4. The POE graft polymer for enhancing PP printing performance as claimed in claim 1, wherein the antioxidant DLTP is dilauryl thiodipropionate with molecular formula of C30H58O4S and molecular weight of 514.8441.

5. The POE graft polymer for enhancing PP printing properties as claimed in claim 1, wherein the wetting agent EBS is ethylene bis stearamide.

6. A preparation process of POE graft polymer for enhancing PP printing performance is characterized by comprising the following steps:

(1) extruding on a double-screw extruder with the length-diameter ratio L/D (being 48), wherein the extruder is provided with 12 sections and 3 feed inlets, the first feed inlet is positioned at the extruder 1D, the second feed inlet is positioned at the extruder 5D, and the third feed inlet is positioned at the extruder 7D;

(2) POE was fed at a feed rate of 75kg/n to feed port 1# at the first feed port 1D of the twin-screw extruder running at 110 r/min;

(3) the monomer is mixed according to the formula proportion: after 7-amino-3-vinyl-8-oxo-5-thia-1-azabicyclo (4,2,0) oct-2-ene-2-carboxylic acid, an initiator 2.5-dimethyl-2.5-di-tert-butylperoxyhexane and a catalyst dioctyltin dilaurate are uniformly mixed, the mixture is added to a feeding port 2# of an extruder 51D at a feeding rate of 3.8kg/n under the pressure of 1.2-1.5 MPa, the reaction of a connecting plate on a POE molecular chain occurs, the extrusion temperature is gradually increased from 120-130 ℃ of a first section to 180-190 ℃ of an eighth section, and the temperature of the tail section of the extruder is gradually decreased to 120-130 ℃;

(4) after mixing the antioxidant 1010, the antioxidant DLTP, and the wetting agent EBS, the mixture was fed to a feed port 3# located at the extruder 7D at a feed rate of 0.92 kg/n.

7. The POE graft polymer for enhancing PP printing according to claim 6 wherein there are 12 zones on the extruder with process temperatures as shown in Table 1:

TABLE 1 Process temperatures in 12 zones on the extruder

Section 1 Section 2 Section 3 Section 4 120℃～130℃ 130℃～140℃ 150℃～160℃ 160℃～170℃ Section 5 Section 6 Section 7 Section 8 160℃～170℃ 170℃～180℃ 180℃～190℃ 180℃～190℃ Section 9 Section 10 Section 11 Section 12 150℃～160℃ 140℃～150℃ 130℃～140℃ 120℃～110℃

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