CN102838806A

CN102838806A - Low-density high-fluidity high-modulus polypropylene and preparation method thereof

Info

Publication number: CN102838806A
Application number: CN2012103863545A
Authority: CN
Inventors: 杨俪辰; 于翠翠; 牛建勋; 沈玉海; 吴锡忠
Original assignee: NANJING JINSHAN AUTOMOBILE ENGINEERING PLASTIC Co Ltd
Current assignee: NANJING JINSHAN AUTOMOBILE ENGINEERING PLASTIC Co Ltd
Priority date: 2012-10-12
Filing date: 2012-10-12
Publication date: 2012-12-26

Abstract

The invention relates to low-density high-fluidity high-modulus polypropylene and a preparation method thereof. The modified polypropylene comprises the following components in parts by weight: 80-96.9 parts of polypropylene, 3-15 parts of inorganic rigid particles, 0.1-5 parts of elastomer, 0.03-0.45 part of coupling agent and 0.1-1 part of antioxidant. The invention has the advantages of simple preparation method, good processing performance and low cost and the like, and the polypropylene prepared by the method has the performances of high fluidity and high modulus.

Description

A kind of low density high workability high modulus polypropylene and preparation method thereof

One. technical field:

The present invention relates to a kind of low density high workability high modulus polypropylene and preparation method thereof

Two. background technology:

It is low that Vestolen PP 7052 (PP) has density, and mechanical property is more excellent, also has good proof stress be full of cracks, antifatigue surrender and chemical resistance, and low price is arranged, and is prone to advantages such as machine-shaping.But PP has the lower shortcoming of bending elastic modulus, this shortcoming also limit this its in Industrial Application.Therefore must carry out modification to it in order to make PP in industry, obtain good application.The modification of the flexible body Toughened PP of the main method of modifying of PP; Filler is filled and is strengthened the PP modification; And utilize PP, filler, the toughness reinforcing enhancing of elastomerics three acting in conjunction PP study on the modification.

Generally still adopt components such as Vestolen PP 7052, elastomerics, filler to form at present, elastomerics mainly has POE, EVA, EPDM etc., and filler mainly is a talcum powder; This method can be prepared certain flexible modified polypropene, but can have a strong impact on the flowability of material when adding these mobile relatively poor elastomericss in the Vestolen PP 7052, adds the rigidity that elastomerics can reduce material greatly in addition; Simultaneously; In order to increase the rigidity of material, in material, select absorb fillers, but because the increase of weighting agent can make its density raise again; Just present this present situation; The present invention has overcome three kinds of problems that performance can not be taken into account simultaneously in the present modified polypropene with a kind of low density high workability of primary study high-modulus Vestolen PP 7052, is satisfied with the demand of national product.The project market outlook are wide, improve significant to this area state of the art.

Three. summary of the invention:

Goal of the invention

The present invention provides that a kind of preparation method is simple, cost is lower, outstanding effect low density high workability high modulus polypropylene and preparation method thereof.

Technical scheme

A kind of low density high workability high modulus polypropylene is characterized in that, according to the mass fraction, forms by following component is composite:

Vestolen PP 7052 80-96.9 part, inorganic rigid particle 3-15 part, elastomerics 0.1-5 part, coupling agent 0.03-0.45 part, lubricant 0.03-0.45 part, oxidation inhibitor 0.1-1 part.

Said Vestolen PP 7052 is the mixtinite of COPP or homopolymerization and COPP arbitrary proportion.

Described inorganic rigid particle is at least a in calcium carbonate crystal whisker, potassium titanate crystal whisker, calcium sulfate crystal whiskers, magnesium salt whisker, wollastonite, lime carbonate master batch, the mica.

Described coupling agent is at least a in titante coupling agent, silane coupling agent, aluminate coupling agent, the hyper-dispersant.

Described elastomerics is at least a among POE, EVA, the EPDM.

Described lubricant is a Metallic stearates.

The preparation method of low density high workability high modulus polypropylene is characterized in that making as follows:

(1) inorganic rigid particle is carried out drying;

(2) dried inorganic rigid particle and coupling agent, lubricant are added mixing machine high speed stirring 0.5-30 minute;

(3) with the inorganic rigid particle that stirs, coupling agent stirred 0.5-30 minute in the mixture of lubricant and Vestolen PP 7052, the elastomerics adding mixing machine;

(4) will appeal mixed material extrudes, after the granulation, gets product through forcing machine.

Beneficial effect

The present invention mainly utilizes coupling agent, makes the surface adhesion power of matrix PP and inorganic rigid particle strengthen, thereby reduces the usage quantity of POE, makes rigidity minimizing amplitude descend; The higher weighting agent of service efficiency with this usage quantity that reduces weighting agent, makes that the density increasing degree is little simultaneously.The use of rigid inorganic particle has in addition improved the rigidity of material.

Four. embodiment:

Embodiment 1:

(1) technical recipe

Vestolen PP 7052 (9829 Beijing Yanshan Petrochemicals; 1885 Beijing Yanshan Petrochemicals) 80 mass parts; Mica (the CX-09 1250 order Shijiazhuang emerging Industrial Co., Ltd.s of occasion) 15 mass parts, elastomerics POE (8150 DOW Chemical) 5 mass parts, aluminate coupling agent (JTW-1618 Nanjing is latitude chemical industry ltd through the sky) 0.15 mass parts; Zinic stearas (HCZ01204 Hunan Province Shaoyang County Organic Chemical Plant) 0.15 mass parts, oxidation inhibitor (1010 Taiwan are clung to together) 0.3 mass parts;

(2) complete processing

Earlier that the wollastonite of 15 mass parts is dry; The elastomerics POE of dried mica and 5 mass parts, the Vestolen PP 7052 of 80 mass parts were stirred 0.5-30 minute in the mixing machine high speed; The mixture that stirs was mixed in mixing machine 0.5-30 minute with the aluminate coupling agent of 0.15 mass parts, the Metallic stearates of 0.15 mass parts, the oxidation inhibitor of 0.3 mass parts, extruding pelletization on twin screw extruder then, the temperature of forcing machine is: one interval 220 ℃; Two, three intervals are 225 ℃; Four, five, six, seven, eight intervals are 230 ℃, and 225 ℃ in nine intervals are carried out three grades in three, five, 73 intervals and vacuumized.Process batten through extrusion moulding, test melt flow rate according to GB/T9341-2000 test bending property, GB/T1843-1996 test impact property, GB/T1033.1-2008 test density, GB/T3682-2000.

Make modified polypropene by this technology.Its performance is seen table 1.

Embodiment 2:

Technical recipe

Vestolen PP 7052 (9829 Beijing Yanshan Petrochemicals; 1885 Beijing Yanshan Petrochemicals) 96.9 mass parts; Mica (the CX-09 1250 order Shijiazhuang emerging Industrial Co., Ltd.s of occasion) 3 mass parts; Elastomerics POE (8150 DOW Chemical) 0.1 mass parts; Aluminate coupling agent (JTW-1618 Nanjing is latitude chemical industry ltd through the sky) 0.15 mass parts, Zinic stearas (HCZ01204 Hunan Province Shaoyang County Organic Chemical Plant) 0.15 mass parts, oxidation inhibitor (1010 Taiwan are clung to together) 0.3 mass parts;

Above-mentioned prescription according to embodiment 1 complete processing moulding, is made modified polypropene.Its performance is seen table 1.

Embodiment 3:

Technical recipe

Vestolen PP 7052 (9829 Beijing Yanshan Petrochemicals, 1885 Beijing Yanshan Petrochemicals) 82 mass parts, magnesium salt whisker (the NP-03 Lucheng City bright mineral fibre of gold Science and Technology Ltd.) 15 mass parts, (8150 make pottery elastomerics POE

Family name's chemistry) 3 mass parts; Aluminate coupling agent (JTW-1618 Nanjing is latitude chemical industry ltd through the sky) 0.15 mass parts; Zinic stearas (HCZ01204 Hunan Province Shaoyang County Organic Chemical Plant) 0.15 mass parts, oxidation inhibitor (1010 Taiwan are clung to together) 0.3 mass parts;

Embodiment 4:

Technical recipe

Vestolen PP 7052 (9829 Beijing Yanshan Petrochemicals; 1885 Beijing Yanshan Petrochemicals) 90 mass parts; Mica (the CX-09 1250 order Shijiazhuang emerging Industrial Co., Ltd.s of occasion) 7 mass parts; Elastomerics POE (8150 DOW Chemical) 3 mass parts, aluminate coupling agent (JTW-1618 Nanjing is latitude chemical industry ltd through the sky) 0.15 mass parts

Zinic stearas (HCZ01204 Hunan Province Shaoyang County Organic Chemical Plant) 0.15 mass parts, oxidation inhibitor (1010 Taiwan are clung to together) 0.3 mass parts;

Comparative Examples:

Technical recipe

Vestolen PP 7052 (9829 Beijing Yanshan Petrochemicals; 1885 Beijing Yanshan Petrochemicals) 80 mass parts; Talcum powder (A-90 Haicheng City the 4th stone flour factory) 15 mass parts, elastomerics POE (8150 DOW Chemical) 5 mass parts, oxidation inhibitor (1010 Taiwan are clung to together) 0.3 mass parts;

Table 1: performance data.

。

Claims

1. a low density high workability high modulus polypropylene is characterized in that, according to the mass fraction, forms by following component is composite:

2. low density high workability high modulus polypropylene as claimed in claim 1 is characterized in that said Vestolen PP 7052 is the mixtinite of COPP or HOPP and COPP arbitrary proportion.

3. low density high workability high modulus polypropylene as claimed in claim 1 is characterized in that described inorganic rigid particle is at least a in calcium carbonate crystal whisker, potassium titanate crystal whisker, calcium sulfate crystal whiskers, magnesium salt whisker, wollastonite, lime carbonate master batch, the mica.

4. low density high workability high modulus polypropylene as claimed in claim 1 is characterized in that described coupling agent is at least a in titante coupling agent, silane coupling agent, aluminate coupling agent, the hyper-dispersant.

5. low density high workability high modulus polypropylene as claimed in claim 1 is characterized in that described elastomerics is at least a among POE, EVA, the EPDM.

6. low density high workability high modulus polypropylene as claimed in claim 1 is characterized in that described lubricant is a Metallic stearates.

7. according to the preparation method of each described low density high workability high modulus polypropylene of claim 1-6 kind, it is characterized in that making as follows:

Inorganic rigid particle is carried out drying;

Dried inorganic rigid particle and coupling agent, lubricant are added mixing machine high speed stirring 0.5-30 minute;

With the inorganic rigid particle that stirs, coupling agent stirred 0.5-30 minute in the mixture of lubricant and Vestolen PP 7052, the elastomerics adding mixing machine;

To appeal mixed material extrudes, after the granulation, gets product through forcing machine.