CN105348643A

CN105348643A - Recyclable novel composite material

Info

Publication number: CN105348643A
Application number: CN201510829588.6A
Authority: CN
Inventors: 贾崇启
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-11-25
Filing date: 2015-11-25
Publication date: 2016-02-24

Abstract

The invention discloses a recyclable novel composite material. The recyclable novel composite material comprises the following components in percentage by weight: 5%-20% of waste polypropylene plastics, 30%-60% of polypropylene, 10%-45% of fiberglass, 5%-10% of plasticizer, 1%-10% of mica, 0.3% of toughener (SEBS), dicumyl peroxide, antioxidants and a slipping agent. The recyclable novel composite material provided by the invention is reasonable in formulation, low in cost and high in practicality, and the prepared plastic composite material is short in molding period, good in flexibility and low in density; and is recyclable, which is known as a green industrial material in the 21st century. The application fields of the composite material are developed from the field of automobile industry to the fields of building industry, chemical preservation, sport equipment, furniture manufacturing and the like.

Description

A kind of recyclable advanced composite material

Technical field

The present invention relates to the technical field of matrix material, be specifically related to a kind of recoverable advanced composite material.

Background technology

Thermoplastic composite is grow up the mid-40 in 20th century abroad, and through the development of nearly 70 years, technology and technique became better and approaching perfection day by day, and kind and output also expand thereupon and increases.Its matrix used resin is polypropylene (PP) resin mainly, its shaping cycle is short, good toughness, density are low, recoverable, be called as 21 century green industry material, its Application Areas by automobile industry development to fields such as building industry, Chemical Preservation, sports equipment, Furniture manufactures.

The feature of currently available products: current formula and the granulation of production technique many employings chopped strand, its products machinery performance apparently higher than matrix resin, the product that easy-formation is complex-shaped, but due to the viscosity of resin itself higher, limit the add-on of fortifying fibre.Glass fibre addition is not high, causes that intensity is not high, Fiber Distribution is uneven, the orientation of glass fibre is uncontrollable, yields poorly, production cost is high, thus limit the shock-resistant of them and erosion resistance.

Summary of the invention

For the defect of currently available products; one provided by the present invention recyclable advanced composite material specific tenacity is high; easy recovery; rapidly shaping; can be used for various moulding process; such as mold pressing, winding, pultrusion, vacuum molding etc., its typical products and its has automobile structure, pipeline, container, section bar, safety helmet etc., because of but a kind of technically, economically with the new opportunities of environment protection aspect.

For addressing the aforementioned drawbacks, the technical solution adopted in the present invention is: a kind of recyclable advanced composite material, comprises following component:

Waste polypropylene plastic 5% ~ 20%;

Polypropylene 30% ~ 60%;

Glass fibre 10% ~ 45%;

Softening agent 5% ~ 10%;

Mica 1% ~ 10%;

Toughner (SEBS) 0.1 ~ 0.5%.

The increase of glass can improve intensity and the rigidity of plastics, and glass could transmit stress after only reaching certain length value, plays enhancement.When it is generally acknowledged extruding pelletization, Length of Glass Fiber should control at 0.5mm ~ 1.0mm.In order to avoid glass overbreak, reduce wear and tear in machines, glass should add in the middle part of machine barrel.

Toughner (SBS) has the structure similar to polyolefine, and the surface energy of the two is also very close, therefore good with polyolefinic consistency; Again because SBS has good creep-resistant property, the effect of softening agent is exactly make polymeric system increase plasticity.Be exactly make plastics deliquescing and be easy to processing concerning plastics.

Dicumyl peroxide (DCP) can make polypropylene and the surperficial crosslinked or chemical action produced to a certain degree of glass, and thus the deterioration by oxidation process greatly improving PP is undertaken by radical chain reaction mechanism by product performance.

Oxidation inhibitor is used to be the most effective anti-aging method stoping PP autoxidation chain reaction process to carry out.Oxidation inhibitor can be divided into radical chain cessationer and peroxide breakdown two.Primary antioxidant mainly contains amine and phenols, and auxiliary antioxidant is thioesters class, and with the use of having synergistic effect, major-minor oxidation inhibitor amount ratio is 1:2 ~ 2:1.Such as select primary antioxidant 1010, auxiliary antioxidant DSTP, each 0115wt%, 1,150,000 hours can be used at 100 DEG C; Or selecting efficient Hinered phenols primary antioxidant, thio-alcohol or phosphorous acid esters auxiliary anti-oxidant, at its 150 DEG C, thermal aging time was more than 1000 hours.

PP is non-polar resin, poor with the fusion character of other material; The smooth surface of glass, is difficult to and nonpolar conjunction.In order to improve this shortcoming, following several method can be adopted: (1) is with peroxidation silane coupling agent: some the peroxidation silane containing double bond displacement group, as vinyl three (tert-butylperoxy) silane (A-1120).(2) with muriate coupling: by silane and perchloro-pentamethylene, xylyl chloride, the perchlorides such as chlorendic anhydride use, can improve the intensity of fiberglass reinforced PP significantly.(3) carry out polar process to PP, namely in PP chain, introduce polar comonomers, conventional polar comonomers has bismaleimides (BMI) and maleic anhydride (MAH) etc.The advantage of the recyclable advanced composite material of the present invention is: specific tenacity of the present invention is high, rapidly shaping, can be used for various moulding process, easily reclaims, be conducive to environment protection.It is reasonable, with low cost that the present invention fills a prescription, practical, the plastics composite shaping cycle made is short, good toughness, density are low, recoverable, be called as 21 century green industry material, its Application Areas by automobile industry development to fields such as building industry, Chemical Preservation, sports equipment, Furniture manufactures.

Embodiment

Below in conjunction with specific embodiment, the present invention is described in further details;

Embodiment 1

A kind of recyclable advanced composite material, is mixed by the composition of following masses ratio and forms:

Waste polypropylene plastic 12.5%

Polypropylene 45%

Glass fibre 22.5%

Softening agent 7.5%

Mica 5.5%

Toughner (SEBS) 0.3%

Dicumyl peroxide 0.5%

Oxidation inhibitor and slipping agent surplus.

Preparation method is as follows

1. after waste and old polypropylene (PP) being mixed in high-speed mixer with appropriate MAH, use twin screw extruder extruding pelletization, obtained PP-g-MAH, for making polypropylene have good mobility, has been mixed into the toughner (SEBS) of 5% when extruding polyacrylic.

2. the auxiliary agents etc. such as PP and PP-g-MAH, alkali free glass fibre and mica are quantitatively added from the main feeding device of twin screw extruder in proportion, through blended, extrude, draw, cool, pelletizing, make fiberglass reinforced PP modifying material.

3. operational variable comprises bar rotating speed, head pressure, barrel zone temperature and glass add-on.Can regulate according to practical situation.Glass adds final vacuum must be complete, and vacuum tightness should be high as far as possible, otherwise will cause: extrude instability; Pellet is closed-cell foam shape, affects outward appearance; Impact property is poor.

Embodiment 2

Differently from embodiment 1 be component proportion

Waste polypropylene plastic 18%

Polypropylene 50%

Glass fibre 21%

Softening agent 6%

Mica 3%

Toughner (SEBS) 0.2%

Dicumyl peroxide 0.3%

Oxidation inhibitor and slipping agent surplus.

Above-mentioned explanation is not restriction of the present invention, and the present invention is also not limited to above-mentioned citing, and any change made in essential scope of the present invention, all should belong to protection scope of the present invention.

Claims

1. a recyclable advanced composite material, is characterized in that: include following weight ratio

Composition:

Waste polypropylene plastic 5% ~ 20%;

Polypropylene 30% ~ 60%;

Glass fibre 10% ~ 45%;

Softening agent 5% ~ 10%;

Mica 1% ~ 10%;

Toughner (SEBS) 0.1 ~ 0.5%.

2. the recyclable advanced composite material of one according to claim 1, is characterized in that: the composition including following weight ratio:

Waste polypropylene plastic 12.5%;

Polypropylene 45%;

Glass fibre 22.5%;

Softening agent 7.5%;

Mica 5.5%;

Toughner (SEBS) 0.3%.

3. the recyclable advanced composite material of one according to claim 1 and 2, is characterized in that: the glass fibre length added is 0.5mm ~ 1.0mm.

4. the recyclable advanced composite material of one according to claim 3, is characterized in that: be also added with dicumyl peroxide (DCP) and oxidation inhibitor two kinds of additives to strengthen its oxidation-resistance.