CN102993623B - Preparation method for novel ABS/PC/PMMA (alkyl benzo sulfonate/poly carbonate/polymethyl methacrylate) alloy - Google Patents

Abstract

The invention discloses a preparation method for a novel ABS/PC/PMMA (alkyl benzo sulfonate/poly carbonate/polymethyl methacrylate) alloy, wherein the novel ABS/PC/PMMA alloy comprises the following constituents in parts by mass: 10-20 parts of ABS, 40-60 parts of PC, 20-40 parts of PMMA, 2-6 parts of compatilizer, 0.1-0.5 part of lubricant and 2-4 parts of antioxidant. The composite material disclosed by the invention is excellent in comprehensive mechanical property and wide in application range; and the preparation method for the composite material is simple, and easy to operate.

Description

The preparation method of new A BS/PC/PMMA alloy

Technical field

The present invention relates to polymeric material field, particularly a kind of preparation method of new A BS/PC/PMMA matrix material.

Background technology

The terpolymer that ABS (Acrylonitrile Butadiene Styrene) resin is made up of vinyl cyanide, divinyl and vinylbenzene.ABS resin is because showing the synergisticing performance between three kinds of components; so have, surface hardness is high, tough and tensile, low-temperature impact resistance is good, creep resistant is good, good stability of the dimension, molding shrinkage are little; processing characteristics is excellent waits excellent properties; be widely used in household electrical appliance; mechanical fitting; office appliance; electron device; the vast field such as automotive industry; but ABS scraping and wiping resistance performance is poor; usually the method for spraying can be adopted to improve the scraping and wiping resistance performance of material surface, but spraying can bring pollution to environment for this reason, and very difficult recycle and reuse.

PC is a kind of Linear carbon acid polyester, and in molecule, carbonic acid group and other groups are alternately arranged, and these groups can be aromatic series, can be aliphatics, also can both.Bisphenol A-type PC is most important Industrial products.PC is the amorphous polymer of almost colourless vitreous state, has well optical.PC high molecular weight resin has very high toughness, and Izod notched impact strength is 600 ~ 900J/m, and the heat-drawn wire of not filling the trade mark is approximately 130 DEG C, and this numerical value can be made after glass fiber reinforcement to increase by 10 DEG C.The modulus in flexure of PC can reach more than 2400MPa, and resin can be processed into large rigid articles.During lower than 100 DEG C, creep rate is under a load very low.PC has good hydrolytic resistance, but can not be used for the goods repeating to stand high pressure steam.PC salient features defect is that stability to hydrolysis resistance is not high enough, and to notch sensitive, resistance to organic chemistry moral character, resistance to scratch is poor, and long-term exposure can be turned to be yellow in ultraviolet.The same with other resins, the leaching of PC easily by some organic solvent is turbid.

PMMA is a kind of thermoplastics, has splendid weathering resistance, and higher surface hardness has good impact property, have good processing characteristics, have high transparency, transmittance, up to 91% ~ 93%, can pass through visible ray 99%, UV-light 72%, quality is light, has outstanding weathering resistance.But PMMA melt viscosity is higher, rate of cooling is very fast again, and goods easily produce internal stress, requires strict, also need to carry out aftertreatment after product molding time therefore shaping to process regulation.PMMA has Room Temperature Creep characteristic.Along with load increasing, time increase, stress cracking phenomenon can be caused.

Due to shortcomings such as not high, the easy snag of PMMA surface hardness, shock resistance are low, shaping poor mobile performances, the modification of PMMA occurs in succession.As the copolymerization of methyl methacrylate and vinylbenzene, divinyl, PMMA and PC's is blended etc.Super transparent PMMA material is mainly used in protecting screen of mobile phone; this product is divided into hardening coat; there is no hardening coat two kinds. be characterized in that transmittance is fabulous; there is no impurity; electrostatic protection film; the thick rear hardness of surface hardening can reach more than 5-6H. and at present special recommendation is used for the PMMA material of hardening treatment, is domesticly called raw plate.

ABS, PC, PMMA are as the one of macromolecular material, namely there is its advantage, there is again the shortcoming of himself, these three kinds of macromolecular materials are mixed and made into alloy, the advantage of differing materials can be effectively utilized, by proportion optimizing, the matrix material of excellent in mechanical performance, range of application Guan Guang can be obtained.

Summary of the invention

The object of the invention is the defect overcoming existing macromolecular material, a kind of preparation method with the matrix material of excellent comprehensive mechanical property is provided.

In order to realize above goal of the invention, the present invention by the following technical solutions: a kind of preparation method of novel alloy, comprises the following steps:

(1) raw material: ABS 10 ~ 20 parts is prepared by following mass fraction; PC 40 ~ 60 parts; PMMA 20 ~ 40 parts; Compatilizer 2 ~ 6 parts; Lubricant 0.1 ~ 0.5 part; 2 ~ 4 parts, oxidation inhibitor;

(2) pour ABS, PC, PMMA and compatilizer into high-speed mixer and mixing 10 ~ 20min, add lubricant and oxidation inhibitor, continue mixing 10min;

(3) with the raw material extruding pelletization that dual-screw-stem machine will mix, material granule is at 80 DEG C of dry 5h.

Described compatilizer is styrene-acrylonitrile-butadiene terpolymer, and molecular-weight average is 1 ~ 40,000, and its particle size range is between 100 ~ 300nm.

ABS resin has the advantage that surface hardness is high, tough and tensile, low-temperature impact resistance is good, creep resistant is good, good stability of the dimension, molding shrinkage are little, and shortcoming is that scraping and wiping resistance performance is poor; PC has that good light transmission, resisting heat distortion performance, high impact properties, hardness are high, good weatherability, and shortcoming is not ultraviolet resistance, not resistance to highly basic, is subject to the erosion of organic solvent.PMMA has splendid weathering resistance, higher surface hardness, has good processing characteristics, have high transparency, but melt viscosity is higher, rate of cooling is very fast again, goods easily produce internal stress, require strict, also need to carry out aftertreatment after product molding time therefore shaping to process regulation.PMMA has Room Temperature Creep characteristic.Along with load increasing, time increase, stress cracking phenomenon can be caused.

The feature of comprehensive ABS, PC, PMMA tri-kinds of macromolecular materials, regulate the proportioning of three kinds of materials, it is 10 ~ 20 parts at ABS, PC is 40 ~ 60 parts, PMMA is 20 ~ 40 parts, the surface hardness of matrix material, toughness, shock-resistance, processing characteristics all reach optimum regime, combine the advantage of three kinds of macromolecular materials, weaken three kinds of macromolecular materials shortcoming originally simultaneously.

Major advantage of the present invention and beneficial effect are:

(1) the matrix material comprehensive mechanical property that obtains of the present invention is excellent, has wide range of applications;

(2) composite material and preparation method thereof of the present invention is simple, easy handling.

Embodiment

Below by embodiment, the present invention is further illustrated.

Embodiment one:

Raw material: ABS 10 ~ 20 parts is prepared by following mass fraction; PC 40 ~ 60 parts; PMMA 20 ~ 40 parts; Compatilizer 2 ~ 6 parts; Lubricant 0.1 ~ 0.5 part; 2 ~ 4 parts, oxidation inhibitor;

Pour ABS, PC, PMMA and compatilizer into high-speed mixer and mixing 10 ~ 20min, add lubricant and oxidation inhibitor, continue mixing 10min;

With the raw material extruding pelletization that dual-screw-stem machine will mix, material granule is at 80 DEG C of dry 5h.

Embodiment two:

Raw material: ABS 10 parts is prepared by following mass fraction; PC 50 parts; PMMA 40 parts; Compatilizer 3 parts; Lubricant 0.1 part; 2 parts, oxidation inhibitor;

Pour ABS, PC, PMMA and compatilizer into high-speed mixer and mixing 10 ~ 20min, add lubricant and oxidation inhibitor, continue mixing 10min;

With the raw material extruding pelletization that dual-screw-stem machine will mix, material granule is at 80 DEG C of dry 5h.

Embodiment three:

Raw material: ABS 15 parts is prepared by following mass fraction; PC 60 parts; PMMA 20 parts; Compatilizer 2 parts; Lubricant 0.2 part; 3 parts, oxidation inhibitor;

Pour ABS, PC, PMMA and compatilizer into high-speed mixer and mixing 10 ~ 20min, add lubricant and oxidation inhibitor, continue mixing 10min;

With the raw material extruding pelletization that dual-screw-stem machine will mix, material granule is at 80 DEG C of dry 5h.

Embodiment four:

Raw material: ABS 20 parts is prepared by following mass fraction; PC 40 parts; PMMA 20 parts; Compatilizer 6 parts; Lubricant 0.5 part; 4 parts, oxidation inhibitor;

Pour ABS, PC, PMMA and compatilizer into high-speed mixer and mixing 10 ~ 20min, add lubricant and oxidation inhibitor, continue mixing 10min;

With the raw material extruding pelletization that dual-screw-stem machine will mix, material granule is at 80 DEG C of dry 5h.

Embodiment five:

Raw material: ABS 15 parts is prepared by following mass fraction; PC 50 parts; PMMA 30 parts; Compatilizer 5 parts; Lubricant 0.4 part; 4 parts, oxidation inhibitor;

Pour ABS, PC, PMMA and compatilizer into high-speed mixer and mixing 10 ~ 20min, add lubricant and oxidation inhibitor, continue mixing 10min;

With the raw material extruding pelletization that dual-screw-stem machine will mix, material granule is at 80 DEG C of dry 5h.

The sample that the ABS/PC/PMMA alloy having the present invention to obtain is obtained, shock strength is at 150 ~ 170KJ/M ², tensile strength is at 87 ~ 103MPa, and flexural strength is at 95 ~ 120MPa, and pencil hardness is at 2H, and melt fluidity is better.

In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.

Claims (1)

1. a preparation method for alloy, is characterized in that comprising the following steps:

(1) raw material: ABS 10 ~ 20 parts is prepared by following mass fraction; PC 40 ~ 60 parts; PMMA 20 ~ 40 parts; Compatilizer 2 ~ 6 parts; Lubricant 0.1 ~ 0.5 part; 2 ~ 4 parts, oxidation inhibitor;

(2) pour ABS, PC, PMMA and compatilizer into high-speed mixer and mixing 10 ~ 20min, add lubricant and oxidation inhibitor, continue mixing 10min;

(3) with the raw material extruding pelletization that dual-screw-stem machine will mix, material granule is at 80 DEG C of dry 5h;

The molecular-weight average of described ABS is 10 ~ 200,000, and wherein the content of divinyl is 5% ~ 20%;

Described compatilizer is styrene-acrylonitrile-butadiene terpolymer, and molecular-weight average is 1 ~ 40,000, and its particle size range is between 100 ~ 300nm.