CN108997707A - PI fiber reinforcement PAR/ABS resin composite materials and preparation method thereof - Google Patents

Abstract

The invention discloses PI fiber reinforcement PAR/ABS resin composite materials and preparation method thereof, including, ABS resin, polyarylate, calcium carbonate, curing agent, lubricant, coupling agent, antioxidant 4020, PI fiber, glass fibre, wherein, in terms of mass fraction, ABS resin content is 75~125 parts, polyarylate content is 75~125 parts, antioxidant 4020 content is 2~3 parts, PI fiber content is 15~55 parts, content of glass fiber is 15~55 parts, calcium carbonate content is 50~70 parts, the curing agent content is 2~4 parts, lubricant content is 3~5 parts, being coupled agent content is 5~7 parts.Multifunction polymer composite material produced by the present invention has a variety of excellent performances such as intensity height, good toughness, creep resistant, shock resistance, chemical-resistant resistance, heat-resist, good flame resistance, good insulating.

Description

PI fiber reinforced PAR/ABS resin composite material and preparation method thereof

technical field

The invention belongs to the technical field of resin composite materials, and in particular relates to PI fiber reinforced PAR/ABS resin composite materials and a preparation method thereof.

Background technique

Polymer materials are materials based on polymer compounds, including plastics, rubber, fibers, coatings, polymer alloys, polymer-based composite materials, and common polymer materials. The preparation and modification of polymer materials is the field of materials. important trends in development. Plastic, synthetic fiber and synthetic rubber are known as the three major synthetic materials of modern polymers. The importance of synthetic resin as the main component of plastic is self-evident. It can also be directly used for processing and molding and is widely used in various industries.

ABS resin is a terpolymer of acrylonitrile-butadiene-styrene. It is a thermoplastic polymer material with high strength, good toughness, good impact resistance and easy processing. But it has low thermal conductivity and poor aging resistance. Polyarylate (PAR) is a polyester resin with aromatic rings and ether bonds in the main chain of the molecule. It not only has good mechanical properties, but also has better mechanical properties than aliphatic polyesters and polycarbonate (PC). Excellent heat resistance, flame retardancy, and good weather resistance, but it has high melt viscosity, poor fluidity and poor processing performance.

How to prepare a multifunctional composite material with good mechanical properties and flame retardancy is in the art.

Contents of the invention

The purpose of this section is to outline some aspects of embodiments of the invention and briefly describe some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and titles of this application, to avoid obscuring the purpose of this section, the abstract and titles, and such simplifications or omissions should not be used to limit the scope of the invention.

As one aspect of the present invention, the present invention overcomes the deficiencies in the prior art and provides a fiber-reinforced PAR/ABS resin composite material.

In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions: a fiber-reinforced PAR/ABS resin composite material, which includes ABS resin, polyarylate, calcium carbonate, curing agent, lubricant, coupling agent, anti-aging agent 4020, PI fiber, glass fiber, wherein, in parts by mass, the content of the ABS resin is 75-125 parts, the content of the polyarylate is 75-125 parts, and the content of the anti-aging agent 4020 is 2-3 parts , the content of the PI fiber is 15-55 parts, the content of the glass fiber is 15-55 parts, the content of the calcium carbonate is 50-70 parts, the content of the curing agent is 2-4 parts, the content of the lubricant 3 to 5 parts, and the content of the coupling agent is 5 to 7 parts.

As a preferred version of the fiber-reinforced PAR/ABS resin composite material of the present invention: the curing agent is composed of isocyanate and phthalic anhydride, wherein, in parts by mass, the content of the isocyanate is 1.5, The content of the phthalic anhydride is 1.5 parts.

As a preferred version of the fiber-reinforced PAR/ABS resin composite material of the present invention: the lubricant is composed of petrolatum and stearic acid, wherein, in parts by mass, the petrolatum content is 2.5 parts, the Stearic acid content is 1.5 parts.

As a preferred version of the fiber-reinforced PAR/ABS resin composite material of the present invention: the coupling agent is composed of MTMS and TEOS, wherein, in parts by mass, the MTMS content is 3 parts, the TEOS Servings are 3 servings.

As another aspect of the present invention, the present invention overcomes the deficiencies in the prior art and provides a preparation method of the fiber-reinforced PAR/ABS resin composite material.

In order to solve the above-mentioned technical problems, the present invention provides the following technical scheme: the preparation method of the described fiber reinforced PAR/ABS resin composite material, which comprises,

Physically mix ABS resin and polyarylate;

Put into twin-screw extruder, add filler, and add curing agent at the same time;

Mix and melt extrude through a twin-screw extruder, cool and dry;

Add lubricant, coupling agent, anti-aging agent 4020, mix well and put into twin-screw extruder;

Pretreat PI fibers to make micron-sized fiber short filaments, add them to the twin-screw extruder, and add glass fibers at the same time;

After mixing, knead and melt extrude through a twin-screw extruder.

As a preferred version of the preparation method of the fiber-reinforced PAR/ABS resin composite material of the present invention: the mixing and melting extrusion of the twin-screw extruder, cooling, and drying; wherein, the screw speed of the extruder is 300～400rpm, the temperature of each stage is 220°C, 225°C, 230°C, 240°C, 245°C, 250°C, 255°C, 260°C, and the pressure is 4.5MPa.

As a preferred version of the preparation method of the fiber-reinforced PAR/ABS resin composite material of the present invention: after the mixing, the twin-screw extruder is mixed and melt-extruded, wherein the screw speed of the extruder is 300- 400rpm, the temperature of each stage is 290°C, 295°C, 300°C, 305°C, 310°C, 315°C, 320°C, 325°C, and the pressure is 4.5MPa.

As a preferred solution of the preparation method of the fiber-reinforced PAR/ABS resin composite material of the present invention: it also includes taking out the pellets extruded by the twin-screw extruder, cooling them, and drying them in an oven at 80°C.

Beneficial effects of the present invention: the present invention uses ABS resin and PAR resin as macromolecule blending modification, melts and mixes the two resins through high temperature and high pressure of a twin-screw extruder, and extrudes and pelletizes to obtain PAR/ABS resin. Then use this as the matrix, PI fiber as the main reinforcement, glass fiber as the second reinforcement, and related additives to prepare PI fiber-reinforced PAR/ABS composite material. The prepared multifunctional polymer composite material has many excellent properties such as high strength, good toughness, creep resistance, impact resistance, chemical resistance, good heat resistance, good flame retardancy, and good insulation.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, the specific implementation of the present invention will be described in detail below in conjunction with specific examples.

In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

Second, "one embodiment" or "an embodiment" referred to herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

The preparation method of PI fiber reinforced PAR/ABS resin composite material of the present invention is:

Physically mix ABS resin and PAR resin according to a certain mass ratio;

Put the material into the twin-screw extruder, then add some fillers such as calcium titanate, titanium dioxide, and talcum powder, and at the same time add one of the curing agent isocyanate, ethylenediamine (EDA), and phthalic anhydride;

Mix and melt the mixed resin material through a twin-screw extruder. The screw speed of the extruder is 300-400rpm, and the temperature of each section is 220°C, 225°C, 230°C, 240°C, 245°C, 250°C, 255°C ℃, 260℃, pressure 4.5MPa;

The prepared mixed resin PAR/ABS resin is taken out, cooled and dried;

Add a certain amount of lubricant Vaseline and stearic acid to the PAR/ABS resin, add one or more coupling agents KH560, HDTMS, MTMS, TEOS, add anti-aging agent 4020, mix well and put it into the twin-screw extruder;

The PI fiber is pretreated to make micron-scale fiber short filaments, which are added to the mixing extruder as the main reinforcement, and glass fiber is added as the second reinforcement;

The mixed fiber, resin and other materials are mixed, melted and extruded through a twin-screw extruder. The screw speed of the extruder is 300-400rpm, and the temperature of each section is 290°C, 295°C, 300°C, 305°C, 310°C, 315°C, 320°C, 325°C, pressure 4.5MPa;

The granules extruded by the twin-screw extruder are taken out, cooled, and dried in an oven at 80°C to obtain a PI fiber-reinforced PAR/ABS resin composite material.

Example 1:

Different resin ratios and different additive ratios are used to manufacture the composite material of this product. The formula of the sample is shown in Table 1:

Table 1

The preparation method of PI fiber reinforced PAR/ABS resin composite material of the present invention is:

Physically mix ABS resin and PAR resin according to the mass ratio of the sample;

Put the material into the twin-screw extruder, then add the filler of the sample and the curing agent of the sample respectively;

Mix and melt the mixed resin material through a twin-screw extruder, the screw speed of the extruder is 350rpm, and the temperature of each section is 220°C, 225°C, 230°C, 240°C, 245°C, 250°C, 255°C, 260°C, pressure 4.5MPa;

The prepared mixed resin PAR/ABS resin is taken out, cooled and dried;

Add the lubricant of the sample to the PAR/ABS resin, the coupling agent of the sample, and the anti-aging agent 4020 of the sample, mix well and put it into the twin-screw extruder;

The PI fiber is pretreated to make micron-scale fiber short filaments, which are added to the mixing extruder according to the mass fraction of the sample as the main reinforcement, and the glass fiber is added as the second reinforcement in the mass fraction of the sample;

Mix and melt the mixed fiber, resin and other materials through a twin-screw extruder, the screw speed of the extruder is 350rpm, and the temperature of each section is 290°C, 295°C, 300°C, 305°C, 310°C, 315°C , 320°C, 325°C, pressure 4.5MPa;

The granules extruded by the twin-screw extruder were taken out, cooled, and dried in an oven at 80°C to prepare the PI fiber-reinforced PAR/ABS resin composite materials of the samples respectively.

Example 2:

The material prepared by the sample of the present invention is compared with ordinary resins, engineering plastics, etc., and its thermal performance load deformation temperature and Vicat softening point are tested. The experimental results are as shown in Table 2:

Table 2

Note: The determination of the deformation temperature under load is carried out in accordance with the national standard GB/T 1634-2004 Plastics - Determination of the deformation temperature under load.

The determination of the softening point of the microcartridge is determined according to the national standard GB/T 1633-2000 Vicat softening temperature (VST) of plastics.

Example 3:

The material prepared by the sample of the present invention is compared with ordinary resins, engineering plastics, etc., and its mechanical properties are tested. The experimental results are as shown in table 3:

table 3

The impact strength is determined according to the national standard GB/T 1843-2008 Plastic Izod Impact Strength.

The determination of tensile strength is carried out in accordance with the national standard GB/T 1040-2006 Determination of tensile properties of plastics.

The determination of the bending strength is carried out according to the national standard GB/T 9341-2000 Determination of the bending properties of plastics.

Example 4:

The prepared material of sample 2 of the present invention is compared with ordinary resins, engineering plastics, etc., and its insulation performance is tested. The experimental results are as shown in Table 4:

Table 4

The measurement of dielectric strength is carried out according to ASTM D149-97 (2004) test method for dielectric breakdown voltage and dielectric strength of solid electrical insulating materials at industrial power frequency.

Example 5:

The materials prepared by the samples of the present invention were compared with ordinary resins, engineering plastics, etc., and their insulation and flame retardancy were tested. The experimental results are shown in Table 5:

table 5

Flame Retardancy According to UL 94-2009 Test for Flammability of Plastic Materials for Equipment and Appliance Components.

The present invention uses ABS resin and PAR resin as polymer blending modification, melts and mixes the two resins through high temperature and high pressure of a twin-screw extruder, and extrudes and granulates to obtain PAR/ABS resin, which is then used as a matrix. Using PI fiber as the main reinforcement, glass fiber as the second reinforcement, and related additives, the PAR/ABS composite material reinforced by PI fiber was prepared. The prepared multifunctional polymer composite material has many excellent properties such as high strength, good toughness, creep resistance, impact resistance, chemical resistance, good heat resistance, good flame retardancy, and good insulation.

In the present invention, ABS and PAR resins have good strength and mechanical properties, and the composite material processed by adding PI fibers as reinforcements has excellent mechanical properties such as extremely high hardness, tensile strength, and bending strength. And has outstanding creep resistance, dimensional stability, etc.

The composite material prepared by the present invention, in addition to the good mechanical properties of the two resins, provides better heat resistance than the ABS resin, and at the same time provides good fluidity and easy processing and molding. The synergistic gain of resin not only maintains their own inherent properties, but also maximizes the characteristics of their respective material components, and endows them with excellent special properties that a single material does not possess.

When the present invention prepares the composite material, the high-performance fiber PI fiber is used as the reinforcement, so that the mechanical properties of the PAR/ABS mixed resin are further improved, and due to the conjugation effect of the aromatic heterocycle, the heat resistance and heat resistance are improved. The stability is also greatly improved, so that the mechanical property retention rate of the material at high temperature is very high. At the same time, although the molecular structure of PI contains a large number of polar groups, such as carbonyl, amino, ether groups, etc., but because of their symmetrical structure, high glass transition temperature, and high rigidity, the activities of polar groups are affected, thus giving The new flame retardancy, insulation and other excellent properties of the composite material are achieved.

The composite material prepared by the invention has good product stability, oil resistance, resistance to most organic solvents and strong chemical resistance. Moreover, the plasticity and designability of composite materials are strong, and they can be designed, modified and processed according to the requirements of use to meet various special properties and are widely used in various fields.

The preparation process of the present invention mainly adopts a twin-screw extruder, the process operation is simple, the medicine is environmentally friendly and pollution-free, and the invention is biocompatible and biodegradable, which conforms to the current social concept of green development.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (8)

1. a kind of fiber reinforcement PAR/ABS resin composite materials, it is characterised in that: including, ABS resin, polyarylate, calcium carbonate, Curing agent, lubricant, coupling agent, antioxidant 4020, PI fiber, glass fibre, wherein in terms of mass fraction, the ABS resin Content is 75~125 parts, the polyarylate content is 75~125 parts, the antioxidant 4020 content is 2~3 parts, the PI is fine Dimension hplc is 15~55 parts, the content of glass fiber is 15~55 parts, the calcium carbonate content is 50~70 parts, the solidification Agent content is 2~4 parts, the lubricant content is 3~5 parts, the coupling agent content is 5~7 parts.

2. fiber reinforcement PAR/ABS resin composite materials as described in claim 1, it is characterised in that: the curing agent is by different Cyanate and phthalic anhydride composition, wherein in terms of mass fraction, the isocyanate content is 1.5 parts, the adjacent benzene two Formic anhydride content is 1.5 parts.

3. fiber reinforcement PAR/ABS resin composite materials as claimed in claim 1 or 2, it is characterised in that: the lubricant by Vaseline and stearic acid composition, wherein in terms of mass fraction, the vaseline content is 2.5 parts, the stearic acid content is 1.5 part.

4. fiber reinforcement PAR/ABS resin composite materials as claimed in claim 1 or 2, it is characterised in that: the coupling agent by MTMS and TEOS composition, wherein in terms of mass fraction, the MTMS content is 3 parts, the TEOS content is 3 parts.

5. the preparation method of any fiber reinforcement PAR/ABS resin composite materials of Claims 1 to 4, it is characterised in that: Including,

ABS resin and polyarylate are subjected to physical mixed；

Double screw extruder is put into, filler is added, while curing agent is added；

It is kneaded melting extrusion by double screw extruder, it is cooling, it is dry；

Lubricant, coupling agent, antioxidant 4020 is added, puts into double screw extruder after mixing；

PI fiber is pre-processed, micron-sized short fibre is made, double screw extruder is added, while glass fibre is added；

Melting extrusion is kneaded by double screw extruder after mixing.

6. the preparation method of fiber reinforcement PAR/ABS resin composite materials as claimed in claim 5, it is characterised in that: described It is kneaded melting extrusion by double screw extruder, it is cooling, it is dry；Wherein, the screw speed of extruder is 300~400rpm, respectively Duan Wendu be 220 DEG C, 225 DEG C, 230 DEG C, 240 DEG C, 245 DEG C, 250 DEG C, 255 DEG C, 260 DEG C, pressure 4.5MPa.

7. the preparation method of fiber reinforcement PAR/ABS resin composite materials as claimed in claim 5, it is characterised in that: described Melting extrusion is kneaded by double screw extruder after mixing, wherein the screw speed of extruder is 300~400rpm, each section of temperature Degree be 290 DEG C, 295 DEG C, 300 DEG C, 305 DEG C, 310 DEG C, 315 DEG C, 320 DEG C, 325 DEG C, pressure 4.5MPa.

8. the preparation method of fiber reinforcement PAR/ABS resin composite materials as claimed in claim 5, it is characterised in that: also wrap It includes, the particle that double screw extruder is squeezed out takes out, dry in 80 DEG C of baking ovens after cooling.