The Composition And Source Of Rubber

rubber patch


The Word Rubber Comes From The Indian Word Cau-uchu, Meaning “weeping Tree.” Natural Rubber Is From The Rubber Latex Flowing Out Of The Three-leaf Rubber Tree After Solidification And Drying. When J. Priestley, An English Chemist, Discovered In 1770 That Rubber Could Be Used To Erase Pencil Writing, The Term Rubber Is Still Used Today. The Molecular Chain Of Rubber Can Be Cross-linked. When The Rubber Is Deformed By External Force, It Has The Ability To Recover Quickly, And Has Good Physical And Mechanical Properties And Chemical Stability. Rubber Is The Basic Raw Material Of Rubber Industry, Widely Used In The Manufacture Of Tires, Rubber Hose, Tape, Cable And Other Rubber Products. The Three-leaf Rubber Tree Provides The Most Commercial Rubber. It Secretes A Large Amount Of Sap Containing Rubber Emulsion When It Is Injured, Such As When The Bark Of The Stem Is Cut.

in Addition, Fig Trees And Some Euphorbidiaceae Plants Also Provide Rubber. Germany Tried To Get Rubber From These Plants When Its Rubber Supply Was Cut Off During World War Ii, But Later Switched To Artificial Rubber.

The First Rubber Trees Were Grown In South America, But They Have Been Transplanted In Large Numbers In Southeast Asia. In Fact, Asia Has Become The Most Important Source Of Rubber.

rubber patch


Natural Rubber Is Made From Latex, And Some Of The Non-rubber Components Contained In The Latex Remain In The Solid Natural Rubber. General Natural Rubber Contains Rubber Hydrocarbon 92%-95%, And Non-rubber Hydrocarbon 5%-8%. Due To Different Production Methods, Different Production Areas And Even Different Seasons Of Gum Collection, The Proportions Of These Ingredients May Vary, But They Are Basically Within The Range.

protein Can Promote Rubber Vulcanization, Delaying Aging. On The Other Hand, Protein Has Strong Water Absorption, Can Cause Rubber Moisture Absorption Mold, Insulation Decline, Protein And Increase The Shortcomings Of Thermogenesis.

acetone Extract Is Some Advanced Fatty Acids And Sterol Substances, Some Of Which Play The Role Of Natural Antiaging Agents And Promoters, And Can Help Powder Complexes In The Mixing Process And Play A Role In Softening The Rubber.

the Ash Mainly Contains Magnesium Phosphate, Calcium Phosphate And Other Salts, With A Small Amount Of Copper, Manganese, Iron And Other Metal Compounds, Because These Variable Metal Ions Can Promote Rubber Aging, So Their Content Should Be Controlled.

the Moisture In Dry Rubber Is Not More Than 1%, Which Can Be Volatile In The Process Of Processing. But When The Moisture Content Is Too Much, It Will Not Only Make The Raw Rubber Easy To Mold In The Storage Process, But Also Affect The Processing Of Rubber, Such As The Complex Agent Is Easy To Cluster When Mixing; It Is Easy To Produce Bubbles In The Process Of Calendering And Pressing, And Bubbles Or Spongy In The Process Of Vulcanization.

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