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Modified high-crystallinity polypropylene composite material and preparation method thereof

A technology for composite materials and polypropylene, applied in the field of modified high-crystalline polypropylene composite materials and its preparation, can solve problems such as low rigid modulus, dimensional shrinkage, warpage, etc., and achieve reduced material density, good dimensional stability, The effect of maintaining the physical properties of the material

Inactive Publication Date: 2018-09-07
横店集团得邦工程塑料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the rigid modulus is low, and after the thin-walled transformation, the product shrinks and warps due to post-crystallization of polypropylene; at the same time, the selected inorganic filler has a high density after filling, which cannot achieve the real purpose of lightweighting the car

Method used

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  • Modified high-crystallinity polypropylene composite material and preparation method thereof
  • Modified high-crystallinity polypropylene composite material and preparation method thereof
  • Modified high-crystallinity polypropylene composite material and preparation method thereof

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Embodiment

[0027] A modified high crystalline polypropylene composite material, comprising the following components, by weight:

[0028]

[0029] Prepare embodiment 1~4 and comparative example 1~2 by following preparation method

[0030] The method includes the following steps:

[0031] Step 1: Pre-dry the talcum powder with a mesh number between 2500-8000 mesh at 100-110°C to remove free water, and the time is determined according to the free water contained in the filler. (It is enough to control the water content of the filler to ≤0.3%, and the general time is 2-5 minutes). Add the dry talcum powder to the kneader, add 0.8-1.2% aluminum-titanium coupling agent UP-107 and stir, and knead at 100-120°C for 5-10 minutes before discharging.

[0032] Step 2: Pre-dry the hollow glass microspheres with a mesh number between 1250-5000 at 100-110°C to remove free water, and the time is determined according to the free water contained in the filler. (It is enough to control the water conte...

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Abstract

The invention discloses a modified high-crystallinity polypropylene composite material which comprises the following components in part by weight: 75-80 parts of high-crystallinity polypropylene, 2-10parts of toughening agent, 5-15 parts of special ultrafine talc powder, 5-15 parts of specially-made hollow glass micro-bead, 0.5-3 parts of scratch-resistant agent, 0.2-0.8 part of anti-oxidant complex, 0.1-0.5 part of weathering-resistant compound aid and 0.1-0.8 part of lubricating agent. The invention further discloses a preparation method of the modified high-crystallinity polypropylene composite material. The modified high-crystallinity polypropylene composite material and the preparation method thereof disclosed by the invention have the benefits that the rigidity of the modified high-crystallinity polypropylene composite material can be improved, and the post-contraction after a part is formed can be reduced, so that the better dimension stability can be maintained; meanwhile, asthe hollow glass micro-bead has the hollow properties after surface treatment with an aluminum-titanium coupling agent, the material density is reduced while the material physical properties are maintained.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a modified high-crystalline polypropylene composite material and a preparation method thereof. Background technique [0002] Automobile lightweight is a major development trend in today's international automobile manufacturing industry. The current automotive market demand has shifted to lighter sports utility vehicles, minivans and other light vehicles, which will promote the development of lighter automotive materials. Plastics are widely used in the automotive industry because of their light weight, good performance, corrosion resistance, impact resistance, and relatively large design freedom, and their proportion in automotive materials is increasing. In recent years, my country has issued a number of policies and environmental protection standards to promote the research and development of new energy vehicles, and gradually promote the process of light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08K13/06C08K9/04C08K3/34C08K7/28
CPCC08K2201/003C08L23/12C08L2207/10C08L23/0815C08K13/06C08K9/04C08K3/34C08K7/28
Inventor 陆龙威宋向前蒋红藤胡鑫斌郝刘佳
Owner 横店集团得邦工程塑料有限公司
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