CN106009247A

CN106009247A - CaCO3 modified PP (polypropylene) composite as well as preparation method and application thereof

Info

Publication number: CN106009247A
Application number: CN201610332997.XA
Authority: CN
Inventors: 江玉庆
Original assignee: Suzhou Ma Peide Office Appliance Manufacturing Co Ltd
Current assignee: Suzhou Ma Peide Office Appliance Manufacturing Co Ltd
Priority date: 2016-05-19
Filing date: 2016-05-19
Publication date: 2016-10-12

Abstract

The invention relates to a CaCO3 modified PP (polypropylene) composite as well as a preparation method and an application thereof. The raw material formula of the composite comprises components in percentage by weight as follows: 54%-75% of PP, 24%-45% of CaCO3 and 0.1%-1% of a lubricant, wherein PP is one or a combination of copolymerized PP and homopolymerized PP. The CaCO3 modified PP composite has good thermal properties, good mechanical strength, low shrinkage and high surface crystallization velocity, and can reduce shrinkage problems of a handle after injection molding and reduce the production cost of a scissor handle when applied to production of the scissor handle.

Description

A kind of CaCO3MODIFIED PP composite and its preparation method and application

Technical field

The present invention relates to a kind of CaCO₃MODIFIED PP composite and its preparation method and application.

Background technology

The commonly used wall thickness of existing market scissors design designs, and uses the engineering plastics of the high good mechanical property of price comparison, as ABS or HIPS, uses above-mentioned resin to be susceptible to shrink of product in the wall thickness of scissors handle produces and scrap, and when producing In order to prevent shrink of product, need to be put into by goods cooling, complex process in water after injection step, cause water resource wave simultaneously Taking and produce industrial wastewater pollution environment, when producing, injection molding cycle is long simultaneously, and production efficiency is low.

Summary of the invention

The technical problem to be solved is to overcome the deficiencies in the prior art, it is provided that a kind of CaCO₃MODIFIED PP composite.

The present invention also provides for a kind of CaCO simultaneously₃The preparation method of MODIFIED PP composite.

For solving above technical problem, the present invention adopts the following technical scheme that

A kind of CaCO₃MODIFIED PP composite, with weight, the composition of raw materials of described composite includes: PP 54～75%, CaCO₃24～45%, lubricant 0.1～1%, wherein, described PP be the one in copolymerization PP, homopolymerization PP or Person's combination.

Further, the composition of raw materials of described composite includes: PP 64～71.5%, CaCO₃28～35.5%, lubricant 0.1～0.5%.

Further, the composition of raw materials of described composite is PP 66.4%, CaCO₃33.3%, lubricant 0.3%.

Further, described PP is the mixture of copolymerization PP and homopolymerization PP, wherein, and described copolymerization PP and the matter of homopolymerization PP Amount ratio is 1:5～6.

Further, described copolymerization PP is 1:5.5 with the mass ratio of homopolymerization PP.

Further, described CaCO₃CaCO for surface active₃, its particle diameter is 1200～1300 mesh.

Further, described CaCO₃Particle diameter be 1250 mesh.

In the present invention, all described raw materials all can prepare by being purchased and/or take known means, the most special When not mentionleting alone bright, it is satisfied by standardization chemical product requirement.

The another technical scheme that the present invention takes is: a kind of above-mentioned CaCO₃The preparation method of MODIFIED PP composite, described system Preparation Method is: weigh PP, CaCO by weight ratio₃And lubricant, mix homogeneously, add in screw extruder, at 220～250 DEG C Lower through melting mixing extrusion, cooling granulation, i.e. obtain described composite after drying.

What the present invention taked another solution is that a kind of above-mentioned CaCO₃MODIFIED PP composite answering in scissors handle With.

Due to the enforcement of technique scheme, the present invention compared with prior art has the advantage that

The composite melt index of the present invention is 11-16g/10min, has good hot property, mechanical strength properties, contraction Rate, and this composite material surface crystallization rate is fast, when being applied to scissors handle production, it is possible to the contraction reducing injection back handle is asked Topic, and reduce the production cost of scissors handle.

Detailed description of the invention

Below in conjunction with specific embodiment, the invention will be further described.

Embodiment 1

The present embodiment provides a kind of CaCO₃MODIFIED PP composite, the composition of raw materials of this composite is 66.4%PP, CaCO₃ 33.3%, 0.3% lubricant, wherein,

PP uses homopolymerization PP, and purchased from SABIC company, the trade mark is PP-575P；

CaCO₃CaCO for surface active₃, its particle diameter is 1250 mesh, purchased from Yangzhou group prosperous powder body science and technology joint-stock company, the trade mark For 103A；

Lubricant is purchased from PT CMS CHEMICAL INDONESIA company, and the trade mark is B-50.

The preparation method of composite is by PP, CaCO₃Uniform with mix lubricant, add in screw extruder, Through melting mixing extrusion, cooling granulation at 220～250 DEG C, i.e. obtain described composite after drying.

Embodiment 2

The present embodiment provides a kind of CaCO₃MODIFIED PP composite, the composition of raw materials of this composite is 65%PP, CaCO₃ 34.5%, 0.5% lubricant, wherein,

PP employing copolymerization PP and homopolymerization PP are the mixture of 1:5.5 in mass ratio, and wherein, copolymerization PP moulds purchased from platform, the trade mark For 5090T.

Other are with embodiment 1.

Embodiment 3

The present embodiment provides a kind of CaCO₃MODIFIED PP composite, the composition of raw materials of this composite is 71.5%PP, CaCO₃ 28%, 0.5% lubricant, wherein,

PP uses copolymerization PP.

Other are with embodiment 1.

Comparative example

The present embodiment provides a kind of PP composite, the CaCO of this composite₃CaCO for non-surface active₃, other are same Embodiment 1.

The composite of above-described embodiment 1～3 is carried out performance characterization, and result is as shown in table 1.

Table 1 is embodiment 1～3 and the performance characterization of composite of comparative example

Embodiment 4

The composite of above-described embodiment 2 is used for producing scissors handle, is not required to after injection put into cooling in cooling water, and produces The cost of shears reduces.

In prior art, ABS is used to produce scissors handle, ABS cost: 11RMB/kg；

The composite using embodiment 1 produces scissors handle, composite cost: 6.5RMB/kg, every scissors handle weight Amount: 0.015kg, annual production: 20000000, save every year: 0.015 × (11-6.5) × 20000000=1350000RMB.

The composite using embodiment 1 produces scissors handle molding cycle and also reduces: every reduction: 0.625S, per Spring Festival holidays Make an appointment (hour): 20000000 × 0.625/3600=3742 hour) saving water rate use: 30RMB × 10 × 260=78000RMB.

Above the present invention is described in detail, its object is to allow the personage being familiar with this art will appreciate that the present invention's Content is also carried out, and can not limit the scope of the invention with this, and the invention is not restricted to the embodiments described, all The equivalence change made according to the spirit of the present invention or modification, all should contain within protection scope of the present invention.

Claims

1. a CaCO₃MODIFIED PP composite, it is characterised in that: with weight, the composition of raw materials of described composite includes: PP 54 ~ 75%, CaCO₃24 ~ 45%, lubricant 0.1 ~ 1%, wherein, described PP is the one in copolymerization PP, homopolymerization PP or combination.

CaCO the most according to claim 1₃MODIFIED PP composite, it is characterised in that: the composition of raw materials of described composite includes: PP 64 ~ 71.5%, CaCO₃28 ~ 35.5%, lubricant 0.1 ~ 0.5%.

CaCO the most according to claim 2₃MODIFIED PP composite, it is characterised in that: the composition of raw materials of described composite is PP 66.4%, CaCO₃33.3%, lubricant 0.3%.

CaCO the most according to claim 1₃MODIFIED PP composite, it is characterised in that: described PP is the mixture of copolymerization PP and homopolymerization PP, and wherein, described copolymerization PP is 1:5 ~ 6 with the mass ratio of homopolymerization PP.

CaCO the most according to claim 4₃MODIFIED PP composite, it is characterised in that: described copolymerization PP is 1:5.5 with the mass ratio of homopolymerization PP.

CaCO the most according to claim 1₃MODIFIED PP composite, it is characterised in that: described CaCO₃CaCO for surface active₃。

CaCO the most according to claim 6₃MODIFIED PP composite, it is characterised in that: described CaCO₃Particle diameter be 1200 ~ 1300 mesh.

CaCO the most according to claim 7₃MODIFIED PP composite, it is characterised in that: described CaCO₃Particle diameter be 1250 mesh.

9. CaCO as claimed in claim 1₃The preparation method of MODIFIED PP composite, it is characterised in that: described preparation method is: weigh PP, CaCO by weight ratio₃And lubricant, mix homogeneously, add in screw extruder, through melting mixing extrusion, cooling granulation, i.e. obtain described composite after drying at 220 ~ 250 DEG C.

10. a CaCO as claimed in claim 1₃The application in scissors handle of the MODIFIED PP composite.