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Functional composite filler modified polypropylene and preparation method thereof

A composite filler, polypropylene technology, applied in the field of modified polypropylene and its preparation, can solve the problems of large shrinkage, poor cold resistance of PP, warping deformation, etc., achieve good compatibility, excellent mechanical properties, and improve low-temperature performance. and the effect of toughness

Active Publication Date: 2014-05-14
江苏和远电力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PP has poor cold resistance, brittle fracture at low temperature, large shrinkage rate, poor creep resistance, poor dimensional stability of products, and is prone to warping and deformation, so it is difficult to meet the relevant needs of engineering MPP cable pipes.

Method used

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  • Functional composite filler modified polypropylene and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0013] A functional composite filler modified polypropylene, comprising the following components in parts by weight: polypropylene 65, composite filler 23, toughening agent 7, compatibilizer 6, composite coupling agent 1.5.

[0014] Among them, the composite filler is composed of flaky filler: fibrous filler: spherical filler in a weight ratio of 1:1:2, the flaky filler is flaky mica, and the fibrous filler is fibrous BaSO 4 , the spherical filler is spherical CaCO 3 . The toughening agent is a polyolefin elastomer. The compatibilizer is propylene grafted maleic anhydride. The composite coupling agent consists of equal weight of silane coupling agent and titanate coupling agent.

[0015] The preparation method of the above-mentioned functional composite filler modified polypropylene comprises the following steps:

[0016] Step 1. Prepare inorganic filler and polypropylene resin according to the above weight ratio, and mix them in a high-speed disperser. The speed of the hi...

Embodiment 2

[0020] A functional composite filler modified polypropylene, comprising the following components in parts by weight: polypropylene 72, composite filler 18, toughening agent 8, compatibilizer 5, composite coupling agent 0.8.

[0021] Among them, the composite filler is composed of flaky filler: fibrous filler: spherical filler in a weight ratio of 1:1:2, the flaky filler is flaky mica, and the fibrous filler is fibrous BaSO 4 , the spherical filler is spherical CaCO 3 . The toughening agent is a polyolefin elastomer. The compatibilizer is propylene grafted maleic anhydride. The composite coupling agent consists of equal weight of silane coupling agent and titanate coupling agent.

[0022] The preparation method of the above-mentioned functional composite filler modified polypropylene comprises the following steps:

[0023] Step 1. Prepare inorganic filler and polypropylene resin according to the above weight ratio, and mix them in a high-speed disperser. The speed of the hi...

Embodiment 3

[0027] A functional composite filler modified polypropylene, comprising the following components in parts by weight: polypropylene 80, composite filler 30, toughening agent 8, compatibilizer 6.2, composite coupling agent 2.

[0028] Among them, the composite filler is composed of flaky filler: fibrous filler: spherical filler in a weight ratio of 1:1:2, the flaky filler is flaky mica, and the fibrous filler is fibrous BaSO 4 , the spherical filler is spherical CaCO 3 . The toughening agent is EPDM rubber. The compatibilizer is polypropylene grafted acrylic acid. The composite coupling agent consists of equal weight of silane coupling agent and titanate coupling agent.

[0029] The preparation method of the above-mentioned functional composite filler modified polypropylene comprises the following steps:

[0030] Step 1, prepare inorganic filler and polypropylene resin according to the above weight ratio, and mix them in a high-speed disperser, the speed of the high-speed di...

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Abstract

The invention discloses functional composite filler modified polypropylene, and a preparation method thereof. The functional composite filler modified polypropylene comprises the following components in parts by weight: 60-80 parts of polypropylene, 15-35 parts of composite filler, 5-10 parts of a flexibilizer, 3-7 parts of a compatilizer, and 0.5-2 parts of a composite coupler, wherein the composite filler consists of laminal filler, fiber filler and spherical filler in weight proportion of 1:1:2. The components of the functional composite filler modified polypropylene have good compatibility and excellent mechanical property, the low temperature performance and toughness of materials are improved, and various requirements of engineering for cable pipes can be met.

Description

technical field [0001] The invention relates to modified polypropylene and a preparation method thereof, in particular to polypropylene modified with functional composite fillers and a preparation method thereof. Background technique [0002] Polypropylene (PP) is one of the most widely used general-purpose resins, due to its abundant raw materials, simple process, low cost and good electrical insulation properties. Compared with other plastics, it has better comprehensive performance, and its products are non-toxic, tasteless, good gloss and chemical resistance, so it is widely used in electrical appliances, automobiles, packaging and daily necessities and other fields. However, PP has poor cold resistance, brittle fracture at low temperature, large shrinkage rate, poor creep resistance, poor dimensional stability of products, and is prone to warping and deformation, so it is difficult to meet the relevant needs of engineering MPP cable pipes. [0003] Therefore, it is nec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K9/06C08K9/04C08K7/00C08K7/08C08K3/30C08K3/26B29B9/06
CPCB29B9/06B29C48/92B29C2948/9258B29C2948/92704C08L23/12C08L2205/03C08L2205/035C08L23/00C08L51/06C08K9/06C08K9/04C08K7/00C08K3/34C08K7/08C08K2003/3045C08K2003/265C08L23/16C08L53/02C08L23/0869C08L33/04
Inventor 孙斌俞强丁永红苏中悦经晶
Owner 江苏和远电力科技有限公司
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