CN104788838A - Master batch with functions of toughening, chemical corrosion resistance and color matching and preparation method of master batch - Google Patents

Abstract

The invention discloses a master batch with the functions of toughening, chemical corrosion resistance and color matching, and belongs to the technical field of modified plastics. The master batch is prepared from the following raw materials in parts by weight: 0-35 parts of polyolefin resin, 0-20 parts of PS resin, 0-15 parts of a compatilizer, 0-40 parts of a toughening agent, 0-20 parts of a reinforcing agent, 15-35 parts of pigments, 0.5-1 part of an antioxygen and 1-5 parts of a lubricant. The master batch can improve the toughness of an interlayer material and enables the elongation at break to be doubled or higher; by adopting the alloy technology, the dissolution of the interlayer HIPS by a foaming agent is reduced, cracks due to partial dissolution of the material is prevented; the master batch also enables sheet materials to have excellent covering power, and meets the trend of a thinner liner of a refrigerator; color matching can be carried out according to customer requirements.

Description

A kind of have master batch of toughness reinforcing, resistance to chemical attack and color matching functions and preparation method thereof

Technical field

The present invention relates to and a kind of there is master batch of toughness reinforcing, resistance to chemical attack and color matching functions and preparation method thereof, belong to modified plastics technical field.

Background technology

Along with the saturated gradually development of household electrical appliances market, the demand of refrigerator mainly comes from the upgrading of update and product, overall high-endization is the large impetus of refrigerator market development, jumbo refrigerator is one of close product looked at of client, and large-capacity refrigerator is had higher requirement to product all technical.When adopting conventional HIPS extrusion board to do inner container of icebox for plastic uptake, especially large-capacity refrigerator, in use, there will be box liner problem of Cracking, has a strong impact on the result of use of client.

The major cause of refrigerator cracking is: first, and refrigerator is ensure excellent effect of heat insulation, uses new blowing agent system, especially polynary blowing agent system, and new blowing agent system is large to the corrosion of casing HIPS material, easily causes material cracks; Secondly, when adopting HIPS extrusion board to carry out plastic uptake, draw ratio is larger, and orientation is larger, whipping agent carries out dissolved corrosion to sheet material, because the corrosion location strength of materials reduces, just there will be sheet material surrender stretching problem, exceeded the elongation at break of sheet material, Materials Fracture, then form crackle.

Terms of settlement main at present adopts two-layer or three-layer co-extruded technology to solve this problem.Outermost layer is high light HIPS, and centre is extrusion grade HIPS, with whipping agent close contact be then PS and PE alloy layer.Respond well, and to accounting for the middle extrusion grade HIPS layer of overall sheet material 80%, still adopt conventional Masterbatch to dye, the opacifying power of adjustment casing and color.But also there is very large cracking risk.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of and has master batch of toughness reinforcing, resistance to chemical attack and color matching functions and preparation method thereof, and it can improve the toughness of intermediate layer material, and elongation at break is enhanced about more than once; Adopt the technology of alloy, reduce the dissolving of whipping agent to middle layer HIPS, prevent material from occurring local dissolution, and then development forms crackle; This master batch also gives the opacifying power of sheet material excellence, meets the trend that inner container of icebox is more and more thinner; The allotment of color can be carried out according to the demand of client.

Technical problem to be solved by this invention is taked following technical scheme to realize:

Have a master batch for toughness reinforcing, resistance to chemical attack and color matching functions, count by weight, it is made up of the raw material of following component:

Polyolefin resin 0-35 part;

PS resin 0-20 part;

Compatilizer 0-15 part;

Toughner 0-40 part;

Toughener 0-20 part;

Pigment 15-35 part;

Oxidation inhibitor 0.5-1 part;

Lubricant 1-5 part.

Described polyolefin resin is polythene material or the polypropylene material of low-pole; Described PS resin is general purpose grade impact-resistant polystyrene.

Described compatilizer is PS and PE grafts.

Described toughner be styrene-butadiene-styrene block copolymer (SBS), styrene isoprene styrene block copolymer (SIS) (SIS), styrene-ethylene- butylenethe mixture of one or more in-styrene block copolymer (SEBS) and styrene ethylene-propylene-styrene type segmented copolymer (SEPS).

Described toughener is the mixture of the one or both in calcium carbonate, barium sulfate, talcum powder.

Described pigment is the pigment of titanium dioxide and other colors.

Described oxidation inhibitor is (2,4 di-tert-butyl-phenyl) tris phosphite and four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester by the composite mixture of the weight ratio of 1:1.

Described lubricant is selected from one or more the mixture in stearate, ethylene bis stearamide, grafting ethylene bis stearamide.

Have a preparation method for the master batch of toughness reinforcing, resistance to chemical attack and color matching functions, it comprises the following steps:

(1) various raw material is taken respectively by formula rate;

(2) to pigment and toughener, carry out surface treatment, the toughener taken, pigment, oxidation inhibitor, lubricant are added high mixer high speed mixing 2 ~ 10 minutes;

(3) polyolefin resin taken, PS resin, compatilizer, toughner are added the mixture high-speed mixing 2 ~ 6 minutes that step (2) makes;

(4) mixed each component is dropped into melting in parallel double-screw extruder, extruding pelletization, the barrel zone temperature of forcing machine is: 180 ~ 210 DEG C, screw speed is 350 ~ 600r/min, melt pressure is 1.0 ~ 2.5MPa, and vacuum tightness is-0.04 ~-0.1MPa, i.e. obtained finished product.

The invention has the beneficial effects as follows:

1) functional agglomerate that the present invention obtains has significant chemical resistance: adopt advanced alloy technology, in functional agglomerate, adopt the polyolefine material of low-pole to process as base-material, the dissolving of whipping agent to HIPS can be reduced significantly, and then add the erosion resistance of sheet material;

2) toughening effect: the master batch that the present invention obtains, the toughness not only not reducing material is improved on the contrary, is significantly improved to the erosion resistance of the sheet material extruded and shock resistance;

3) good opacifying power: meet day by day thinning sheet material demand, when sheet metal thickness is thinning, ensure that opacifying power does not reduce;

4) colour stable, can allocate according to customer demand, and weathering resistance is good, and the titanium dioxide of rutile that employing has excellent weather resistance and the toner of weather-proof rank are allocated.

Embodiment

In order to technique means of the present invention, creation characteristic, reach object and effect is easy to understand, below in conjunction with specific embodiment, set forth the present invention further.

Embodiment 1

Have a master batch for toughness reinforcing, resistance to chemical attack and color matching functions, count by weight, it is made up of the raw material of following component:

Polyethylene 35 parts;

Polystyrene 0 part;

Compatilizer 15 parts;

SEBS 10 parts;

3 parts, calcium carbonate;

Titanium dioxide 35 parts;

0.5 part, oxidation inhibitor;

Zinic stearas, 1 part, ethylene bis stearamide 1:1 mixture.

Concrete preparation method comprises the following steps:

(1) various raw material is taken respectively by formula rate;

(2) to pigment and toughener, carry out surface treatment, the toughener taken, pigment, oxidation inhibitor, lubricant are added high mixer high speed mixing 2 ~ 10 minutes;

(3) polyolefin resin taken, PS resin, compatilizer, toughner are added the mixture high-speed mixing 2 ~ 6 minutes that step (2) makes;

(4) mixed each component is dropped into melting in parallel double-screw extruder, extruding pelletization, the barrel zone temperature of forcing machine is: 180 ~ 210 DEG C, and screw speed is 350 ~ 600r/min melt pressure is 1.0 ~ 2.5MPa; Vacuum tightness is-0.04 ~-0.1MPa, i.e. obtained master batch.

Embodiment 2

Have a master batch for toughness reinforcing, resistance to chemical attack and color matching functions, count by weight, it is made up of the raw material of following component:

Polypropylene 20 parts;

Polystyrene 10 parts;

Compatilizer 10 parts;

SBS 26 parts;

10 parts, barium sulfate;

Titanium dioxide 20 parts;

1 part, oxygenant;

Zinic stearas, 3 parts, ethylene bis stearamide 1:1 mixture.

Concrete preparation method is with embodiment 1.

Embodiment 3:

Have a master batch for toughness reinforcing, resistance to chemical attack and color matching functions, count by weight, it is made up of the raw material of following component:

Polyene ethene 0 part;

Polystyrene 20 parts;

Compatilizer 0 part;

SIS 40 parts;

20 parts, barium sulfate;

Titanium dioxide 15 parts;

0.5 part, oxygenant;

Zinic stearas, 5 parts, ethylene bis stearamide 1:1 mixture.

Concrete preparation method is with embodiment 1.

Toughness reinforcing, resistance to chemical attack the inventive method obtained and color matching functions master batch join in HIPS material according to the part by weight of 10%, and carry out injection moulding test bars, its main physical index (representative value) is:

Physicals (GB)	Embodiment 1	Embodiment 2	Embodiment 3
					Tensile strength Mpa	21.5	22.2
Elongation at break %	60	65	70
					Flexural strength Mpa	34.8	36.5	35.7
Modulus in flexure Mpa	1750	1780	1670
					The strong KJ/m2 of Izod notched impact	12.6	13	14.5

More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand, and the present invention is not restricted to the described embodiments, and without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (9)

1. have a master batch for toughness reinforcing, resistance to chemical attack and color matching functions, it is characterized in that: count by weight, it is made up of the raw material of following component:

Polyolefin resin 0-35 part;

PS resin 0-20 part;

Compatilizer 0-15 part;

Toughner 0-40 part;

Toughener 0-20 part;

Pigment 15-35 part;

Oxidation inhibitor 0.5-1 part;

Lubricant 1-5 part.

2. a kind of master batch with toughness reinforcing, resistance to chemical attack and color matching functions according to claim 1, is characterized in that: described polyolefin resin is polythene material or the polypropylene material of low-pole; Described PS resin is general purpose grade impact-resistant polystyrene.

3. a kind of master batch with toughness reinforcing, resistance to chemical attack and color matching functions according to claim 1, is characterized in that: described compatilizer is PS and PE grafts.

4. a kind of master batch with toughness reinforcing, resistance to chemical attack and color matching functions according to claim 1, is characterized in that: described toughner is styrene-butadiene-styrene block copolymer(SBS), vinylbenzene- isoprene-styrene block multipolymer(SIS), styrene-ethylene- butylene-styrene block multipolymerand styrene ethylene-propylene-styrene type block (SEBS) multipolymer(SEPS) mixture of one or more in.

5. a kind of master batch with toughness reinforcing, resistance to chemical attack and color matching functions according to claim 1, is characterized in that: described toughener is the mixture of the one or both in calcium carbonate, barium sulfate, talcum powder.

6. a kind of master batch with toughness reinforcing, resistance to chemical attack and color matching functions according to claim 1, is characterized in that: described pigment is the pigment of titanium dioxide and other colors.

7. a kind of master batch with toughness reinforcing, resistance to chemical attack and color matching functions according to claim 1, it is characterized in that: described oxidation inhibitor is (2,4 di-tert-butyl-phenyls) tris phosphite and four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester is by the composite mixture of the weight ratio of 1:1.

8. a kind of master batch with toughness reinforcing, resistance to chemical attack and color matching functions according to claim 1, is characterized in that: described lubricant is selected from one or more the mixture in stearate, ethylene bis stearamide, grafting ethylene bis stearamide.

9. having described in claim 1-8 any one is toughness reinforcing, a preparation method for the master batch of resistance to chemical attack and color matching functions, it is characterized in that: it comprises the following steps:

(1) various raw material is taken respectively by formula rate;

(2) to pigment and toughener, carry out surface treatment, the toughener taken, pigment, oxidation inhibitor, lubricant are added high mixer high speed mixing 2 ~ 10 minutes;

(3) polyolefin resin taken, PS resin, compatilizer, toughner are added the mixture high-speed mixing 2 ~ 6 minutes that step (2) makes;

(4) mixed each component is dropped into melting in parallel double-screw extruder, extruding pelletization, the barrel zone temperature of forcing machine is: 180 ~ 210 DEG C, screw speed is 350 ~ 600r/min, melt pressure is 1.0 ~ 2.5MPa, and vacuum tightness is-0.04 ~-0.1MPa, i.e. obtained finished product.