To test and analyze the mechanical property of bamboo-carbon modified polyester fiber,its single-extension,elasticity recovery of constant elongation and the fiber stress relaxation were tested using model YG001 of fiber mightiness tester.

Hexamethyldisilazane improvement on the paper properties of secondary fibers;

By using secondary fibers, fiber raw material can be saved and the environment pollution caused by paper-making industry can be relieved, but there are still many unsolved problems in the recycle process.

This article mainly introduces the components of recycled paper, and the physical and chemical changes of virgin fibers, and the influence of the characteristics of secondary fibers on the papermaking and the characters of paper.

The effect of hemicellulose content on recycled fiber s porous structure and its paper performance;

The paper dwelled on application of cationic modified rosin sizing agent in recycled fiber,especially discussed sizing effect at the conditions of different dosages of cation modified rosin sizing agent and Al_2(SO_4)_3,different pH value of the pulp.

During the recycling of the secondary fibre,some dissolved and colloidal substance was released to the process water.

Based on the filling and character-altering principle with compound material and plastic, the paper take waste dimou from agriculture and secondary fibre from paper making industry as main materials, taking double roll.

It was showed that:ER65 had better sizing on second fiberdifficult to sizing,the dosage of ER65 cut down by 20% in comparison with saponified rosin while by30% with ordinary dispersed rosin size.

The application and effect of YZ-151(amphoteric starch)and HCT-1(spray starch)used in threaded kraft sack paper which is made by second fiber pulp are introduced.