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New pattern ultralow shrinkage ratio polypropylene material

An ultra-low shrinkage, polypropylene material technology, applied in the field of new polypropylene materials, can solve the problems of high price and high cost, and achieve the effect of low price and excellent low temperature resistance

Inactive Publication Date: 2006-05-17
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the decorative parts of domestic automobiles, such as door anti-collision, bumper, instrument panel, auxiliary instrument panel, tool box cover, and heater housing, air filter housing, air filter housing, etc., require precise assembly quality and high assembly clearance requirements. Air-conditioning shells are usually made of ABS, ABS / PC or PUR plus 30% glass fiber for decorative parts. The materials have high requirements for low-temperature impact resistance, dimensional stability, molding processability, and surface smoothness. Foreign materials are expensive and costly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Brand new small red flag anti-scratch strip

[0012] Main formula (parts by weight): polypropylene F401 19, polypropylene 1947H30, polypropylene J3405, polyethylene 7006A 5, EPDM 10, mica powder 31, carbon black 1, antioxidant 1010 0.1, auxiliary Antioxidant DSTP 0.1, auxiliary antioxidant DLTP 0.1, calcium stearate 0.2, titanate coupling agent CSC 0.31.

[0013] The process is as follows: 1. Dry the mica powder at a high temperature of 100-120°C for 2 hours; 2. Dry the carbon black at a temperature of 80-90°C for 1-2 hours; 3. Dry the above The final raw materials and calcium stearate are put into the high-speed mixer and mixed for 1-2 minutes, then add titanate coupling agent and carry out high-speed stirring. The temperature in the mixing barrel of the high-speed mixer is 80-100°C. The powder is in the form of suspension; 4. Stir the above materials evenly, pour in the main material and other additives, stir at high speed for 5-10 minutes, and then granulate.

[00...

Embodiment 2

[0015] Example 2: Development of car heater shell material

[0016] Its formula is: PP polypropylene F401 30

[0017] PP polypropylene J340 10

[0018] PE Polyethylene 7750 2

[0019] YM packing 20

[0020] Antioxidant 0.1

[0021] Secondary antioxidant 0.2

[0022] Calcium stearate 0.3

[0023] Processing aid EBS 0.5

[0024] project

Embodiment 3

[0025] Embodiment 3: the shrinkage rate is 0.4-0.6:

[0026] 1. Material formula:

[0027] Polypropylene (Liaoning Panjin Chemical Factory F401) 40

[0028] Copolymerized polypropylene (Liaoning Panjin Chemical Plant J340) 16

[0029] High-density polyethylene (Liaohua 7750) 1.5

[0030] YM powder (Shanxi Shouguang Mica General Factory) 40

[0031] Primary antioxidant 1010 (Liaohua) 1

[0032] Auxiliary antioxidant DSTP (Liaohua) 0.5

[0033] Calcium stearate (Shenyang Auxiliary Factory) 0.5

[0034] Processing aid EBS (Suzhou Guoguang Chemical Factory) 0.5

[0035] project

[0036] The above materials can be applied to car heater shells, air conditioner condenser shells, and hand brake lever decorative covers. Using this material to replace ABS materials can reduce material costs by 30-40%.

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PUM

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Abstract

The present invention involves a new type of ultra -low contraction polypropylene material. Its formula (weight number) is: polypropylene; polyethylene; triangular ethyl acelene rubber; cloudmate powder; antioxidant; auxiliary antioxidant; hard ester acid; hard ester acid;Calcium; titanate coupling agent CSC.The crafts are as follows: 1. Repeat the filler with titanate puppet coupling agent, and then put the above various raw materials at a high temperature of 80-100 ° C according to the formula, and mix it at a high-speed mixer at a high speed; 2. After full mixingThe materials are transported to the double -rod extracting machine for mixed grains; 3. The scissors and blocks are combined with the block of the block, and the two groups are cut and the three groups are matched.The block is cut with a 45 ° angle of the shear capacity.The price of materials is low, and the cost reduction rate is 91 %.The contraction rate can reach 0.4 % -0.8 %.

Description

Technical field: [0001] The invention relates to a new type of polypropylene material, in particular to a new type of ultra-low shrinkage rate polypropylene material; it belongs to a new type of material for automobile decoration parts. Background technique: [0002] At present, the decorative parts of domestic automobiles, such as door anti-collision, bumper, instrument panel, auxiliary instrument panel, tool box cover, and heater housing, air filter housing, air filter housing, etc., require precise assembly quality and high assembly clearance requirements. Air-conditioning shells are usually made of ABS, ABS / PC or PUR plus 30% glass fiber for decorative parts. The materials have high requirements for low-temperature impact resistance, dimensional stability, molding processability, and surface smoothness. Foreign materials are expensive and costly. Invention content: [0003] The technical problem to be solved by the present invention is to provide a new type of ultra-l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K5/11
Inventor 严昶
Owner CHINA FIRST AUTOMOBILE