Preparation method of modified PBT material

A PBT resin and modification technology, which is applied in the field of PBT material preparation, can solve the problems of large molding shrinkage, low notched impact strength, and containing ester bonds, so as to increase low-temperature impact resistance, solve defects that are easy to crack, and increase bonding Part effect

Active Publication Date: 2014-03-12
HARBIN ZHONGDA PROFILE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems of existing prepared PBT materials containing ester bonds, low notched impact strength and large molding shrinkage, and provides a preparation method of modified PBT materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0012] Embodiment 1: This embodiment is a modified PBT material, which consists of 5~95 parts by weight of PBT resin, 5~40 parts of glass fiber reinforcing agent, 0.1~0.3 parts of lubricant, 0.2~1.4 parts of dispersant, 0.2~0.4 parts of antioxidant and 1~3 parts of low temperature modified toughening agent.

[0013] The PBT resin described in this embodiment is polybutylene terephthalate; the glass fiber reinforcing agent described in this embodiment is an alkali-free glass fiber; the lubricant described in this embodiment is pentaerythritol stearate; The dispersant described in this embodiment is a silane coupling agent; the antioxidant described in this embodiment is antioxidant 1010 or antioxidant 168, or a mixture of antioxidant 1010 and antioxidant 168 in any ratio; The low-temperature modified toughening agent described in the embodiment is styrene butadiene acrylate (manufacturing company: American Rohm and Haas, model: MBSTH-96) or DuPont rubber (manufacturing company:...

specific Embodiment approach 2

[0034] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: a modified PBT material consists of 65-90 parts by weight of PBT resin, 10-35 parts of glass fiber reinforcing agent, 0.1-0.3 parts Lubricant, 0.2~1.0 parts of dispersant, 0.21~0.35 parts of antioxidant and 1~3 parts of low temperature modified toughening agent. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that a modified PBT material consists of 75-83 parts by weight of PBT resin, 15-30 parts of glass fiber reinforcing agent, 0.1 ~0.3 parts of lubricant, 0.2~0.5 parts of dispersant, 0.22~0.28 parts of antioxidant and 1~3 parts of low temperature modified toughening agent. Others are the same as in the first or second embodiment.

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Abstract

A preparation method of a modified PBT material relates to a PBT material and a preparation method thereof. The invention solves the problems of ester bond presence, low notch impact strength and high molding shrinkage of currently prepared PBT materials. The preparation method comprises: 1. material weighing, 2. drying, 3. mixing, and 4. molding. The preparation method of the invention is mainly applicable to the preparation of PBT materials.

Description

technical field [0001] The present invention relates to a kind of preparation method of PBT material Background technique [0002] With the development of the market economy and the acceleration of urbanization, more and more plastic products are widely used in the fields of automobiles, construction, packaging, electronic appliances and medicine. These products are usually made of materials such as PP, ABS, PA or PVC The lining material processed as a carrier has been verified by time. Among the lining materials processed with PP, ABS, PA or PVC materials, the main force-bearing members (middle sections) of all window types are made of galvanized square tubes. Reinforced steel, the uncalculated window type of multi-storey buildings can use square tube steel with wall thickness of 1.5mm; Square tubular steel with a wall thickness of 2.0mm is used to ensure the strength and rigidity of the overall window, so as to ensure that the low temperature impact meets the use requirem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L51/00C08K13/04C08K7/14C08K5/103B29C47/92B29C48/92
Inventor 张凤兰胡大忠张楠胡淼胡耀中胡鑫
Owner HARBIN ZHONGDA PROFILE TECH
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