CN102757600A - Polypropylene plate for plastic box and machining process of polypropylene plate - Google Patents

Abstract

The invention provides a polypropylene plate for a plastic box and a machining process of the polypropylene plate. The polypropylene plate comprises the following components in percentage by mass: 40-50 percent of polypropylene, 19-33 percent of polypropylene randon copolymer, 11-20 percent of flexibilizer, 2-10 percent of linear low-density polyethylene, 1-5.5 percent of filler additive, 0.8-3 percent of coupling agent, 0.2-.0.8 percent of nucleating agent, 0.2-0.4 percent of talcum powder, 0.2-0.3 percent of lubricating agent and 0.1-0.2 percent of compound antioxidant. The invention also discloses a machining process of the polypropylene plate. According to the polypropylene plate for the plastic box and the machining process of the polypropylene plate, the toughness of the polypropylene plate is effectively enhanced, so that the polypropylene plate is widely applied, and is especially suitable for the manufacture of the plastic pass box, a folding box and an anti-static box.

Description

A kind of plastic box is with polypropylene board and complete processing thereof

Technical field

The present invention relates to technical field of polymer materials and processing technique field, relate in particular to a kind of plastic box with high toughness polypropylene board and complete processing thereof.

Background technology

Vestolen PP 7052 (Polypropylene is called for short PP) is a kind of hemicrystalline thermoplastics.Have higher shock-resistance, mechanical properties is tough, anti-multiple organic solvent and acid and alkali corrosion.Being widely used in industry member, is one of usual common macromolecular material.Vestolen PP 7052 is a kind of thermoplastic resin that is got by propylene polymerization; Nontoxic, tasteless, be divided into three kinds of isotatic polypropylene (isotaeticPolyProlene), Atactic Polypropelene (atacticPolyPropylene) and syndiotactic polypropylenes (syndiotaticPolyPropylene) by the methyl arrangement position.It has that intensity height, big, wear-resisting, the anti-flexural fatigue of hardness, heat resisting temperature are high, moisture-proof and good, the easy machine-shaping of chemical resistant properties, advantage such as cheap.It is of many uses, as is used for film article, injection-molded item, extrudate etc., is particularly useful for Turnover Box, automobile, electric, mechanical, instrument, wireless, weaving, defence engineering accessory, daily necessities, medical device, material of construction etc.

But Vestolen PP 7052 has shortcomings such as low-temperature flexibility is poor, not ageing-resistant, has limited its application.It is the research about polypropylene modification that many researchs are arranged at present, as the worker gather, chlorination or esterification, blend, filling etc.But effect still is not very desirable.

Summary of the invention

The problem that invention will solve provides a kind of plastic box of enhanced toughness with polypropylene board and complete processing thereof.

For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:

A kind of plastic box is with high toughness polypropylene board, and its each component and massfraction are following:

Body Vestolen PP 7052: 40～50%

COPP: 19～33%

Toughner: 11～20%

Linear low density polyethylene: 2～10%

Filler auxiliary agent: 1～5.5%

Coupling agent: 0.8～3%

Nucleator: 0.2～0.8%

Talcum powder: 0.2～0.4%

Lubricant: 0.2～0.3%

Composite antioxidant: 0.1～0.2%.

Each component optimum ratio is:

Body Vestolen PP 7052: 45%

COPP: 30%

Toughner: 15%

Linear low density polyethylene: 5%

Filler auxiliary agent: 1.9%

Coupling agent: 2%

Nucleator: 0.5%

Talcum powder: 0.3%

Lubricant: 0.2%

Composite antioxidant: 0.1%.

Said body Vestolen PP 7052 is the HOPP of melt flow rate(MFR) greater than 12g/10min.

Said COPP is that propylene and content are the segmented copolymer of 4.5% ethene.

Said toughner is a kind of in chlorinatedpolyethylene, styrene butadiene thermoplasticelastomer, the acrylonitrile-butadiene-styrene copolymer.

Said filler auxiliary agent is selected from 600 order silicon powders, the strong aluminum oxide of toothpaste level, water-ground limestone and obtains by weight 1:1:1-2 is composite.

Said coupling agent is that silane coupling agent DL171 and zirconium ester coupling agent obtain according to weight ratio 1:5-7 is composite

Described nucleator is a nucleator 4030; Described talcum powder is a food grade, and the order number is greater than 2000, whiteness >=92%.

Described lubricant is N, the N-ethylene bis stearamide.

Said composite antioxidant be oxidation inhibitor 168 with antioxidant 1010 by weight 1: 2-4 is composite to be obtained.

A kind of plastic box is with the complete processing of polypropylene board, and this process method may further comprise the steps:

(1) stir 20～30min by filling a prescription with in each component adding reaction kettle;

(2) reacted material gets into and mixes 10～15min in the high-speed mixer, and the mixing machine rotating speed is 6000～7000r/min, and Heating temperature is 110～120 ℃;

(3) step (2) gained mixture is passed through in all raw materials mix even, heating and melting is through the sheet layer press, extruding forms high toughness polypropylene board; Processing condition are: melt temperature 220-240 ℃; Head temperature 230-250 ℃, residence time 2-4min, pressure are 30-48MPa.

A kind of plastic box can be used for the manufacturing of plastic box, folding carton, anti-electrostatic case with high toughness polypropylene board.

Advantage and positively effect that the present invention has are:

A kind of plastic box of the present invention has effectively strengthened the toughness of polypropylene board with polypropylene board and complete processing thereof, sheet material is had widely use, and is particularly useful for the manufacturing of plastic box, folding carton, anti-electrostatic case.

Embodiment

A kind of plastic box is used polypropylene board, and its each component and massfraction are following:

HOPP: 45%

Propylene and content are the segmented copolymer of 4.5% ethene: 30%

Chlorinatedpolyethylene: 15%

Linear low density polyethylene: 5%

Filler auxiliary agent: 1.9%

Coupling agent: 2%

Nucleator 4030:0.5%

Talcum powder: 0.3%

N, N-ethylene bis stearamide: 0.2%

Composite antioxidant: 0.1%.

Wherein the filler auxiliary agent is selected from 600 order silicon powders, the strong aluminum oxide of toothpaste level, water-ground limestone and obtains by weight 1:1:1 is composite.

Coupling agent is that silane coupling agent DL171 and zirconium ester coupling agent obtain according to weight ratio 1:6 is composite.

Talcum powder is a food grade, and the order number is greater than 2000, whiteness >=92%.

Composite antioxidant be oxidation inhibitor 168 with antioxidant 1010 by weight 1: 3 composite obtaining.

A kind of plastic box is with the complete processing of polypropylene board, and this process method may further comprise the steps:

(1) stirs 20～30min by filling a prescription with in each component adding reaction kettle;

(2) reacted material gets into and mixes 15min in the high-speed mixer, and the mixing machine rotating speed is 6500r/min, and Heating temperature is 110 ℃;

(3) step (2) gained mixture is passed through in all raw materials mix even, heating and melting is through the sheet layer press, extruding forms high toughness polypropylene board; Processing condition are: 220 ℃ of melt temperatures; 250 ℃ of head temperatures, residence time 3min, pressure are 38MPa.

A kind of plastic box of the present invention has effectively strengthened the toughness of polypropylene board with polypropylene board and complete processing thereof, sheet material is had widely use, and is particularly useful for the manufacturing of plastic box, folding carton, anti-electrostatic case.

More than preferred embodiment of the present invention is specified, but said content is merely preferred embodiment of the present invention, can not be considered to be used to limit practical range of the present invention.All equalizations of doing according to application range of the present invention change and improve etc., all should still belong within the patent covering scope of the present invention.

Claims (10)

1. a plastic box is used polypropylene board, it is characterized in that: each component and massfraction are following:

Body Vestolen PP 7052: 40～50%

COPP: 19～33%

Toughner: 11～20%

Linear low density polyethylene: 2～10%

Filler auxiliary agent: 1～5.5%

Coupling agent: 0.8～3%

Nucleator: 0.2～0.8%

Talcum powder: 0.2～0.4%

Lubricant: 0.2～0.3%

Composite antioxidant: 0.1～0.2%.

2. a kind of plastic box as claimed in claim 1 is used polypropylene board, it is characterized in that: said body Vestolen PP 7052 is the HOPP of melt flow rate(MFR) greater than 12g/10min.

3. a kind of plastic box as claimed in claim 1 is used polypropylene board, it is characterized in that: said COPP is that propylene and content are the segmented copolymer of 4.5% ethene.

4. a kind of plastic box as claimed in claim 1 is used polypropylene board, it is characterized in that: said toughner is a kind of in chlorinatedpolyethylene, styrene butadiene thermoplasticelastomer, the acrylonitrile-butadiene-styrene copolymer.

5. a kind of plastic box as claimed in claim 1 is used polypropylene board, it is characterized in that: said filler auxiliary agent is selected from 600 order silicon powders, the strong aluminum oxide of toothpaste level, water-ground limestone and obtains by weight 1:1:1-2 is composite.

6. a kind of plastic box according to claim 7 is used polypropylene board, it is characterized in that, said coupling agent is that silane coupling agent DL171 and zirconium ester coupling agent obtain according to weight ratio 1:5-7 is composite

7. a kind of plastic box as claimed in claim 1 is used polypropylene board, it is characterized in that: described nucleator is a nucleator 4030; Described talcum powder is a food grade, and the order number is greater than 2000, whiteness >=92%.。

8. a kind of plastic box as claimed in claim 1 is used polypropylene board, it is characterized in that: described lubricant is N, the N-ethylene bis stearamide.

9. a kind of plastic box as claimed in claim 1 is used polypropylene board, it is characterized in that: said composite antioxidant be oxidation inhibitor 168 with antioxidant 1010 by weight 1: 2-4 is composite to be obtained.

10. one kind according to the complete processing of the described a kind of plastic box of arbitrary claim in the claim 1 to 9 with polypropylene board, it is characterized in that this method may further comprise the steps:

(1) stirs 20～30min by filling a prescription with in each component adding reaction kettle;

(2) reacted material gets into and mixes 10～15min in the high-speed mixer, and the mixing machine rotating speed is 6000～7000r/min, and Heating temperature is 110～120 ℃;

(3) step (2) gained mixture is passed through in all raw materials mix even, heating and melting is through the sheet layer press, extruding forms high toughness polypropylene board; Processing condition are: melt temperature 220-240 ℃; Head temperature 230-250 ℃, residence time 2-4min, pressure are 30-48MPa.